一、项目分析
1、需求
(1)使用 ssm + vue 实现一个crud(数据库增删改查)的简单实现。
(2)前后端分离,前端页面展示+后台管理。
2、技术点
(1)基础框架: SSM(Spring,SpringMVC,Mybatis)
(2)数据库: Mysql
(3)前端: UI框架 iView + vue
(4)项目依赖管理: maven
(5)分页: pagehelper
(6)逆向工程: Mybatis Generator
(7)开发工具:IDEA + Chrome + HBuilder X
二、项目地址、截图
1、项目地址
front:https://github.com/lyh-man/ssm_crud-front.git
back:https://github.com/lyh-man/ssm_crud-back.git
2、项目截图
(1)初始界面(查数据)
Step1:初始化界面(获取第一页数据)
Step2:可以设置每页数据的条数,如下,设置 20条/页
Step3:点击设置按钮,可以设置表格样式。
Step4:切换页面,数据刷新(根据当前页码向后台发送请求,获取数据)
(2)修改数据
Step1:点击编辑按钮(如下,选择第一条数据,展示所选择的数据。)
Step2:修改数据
Step3:修改后,展示数据
(3)删除数据
Step1:点击删除按钮(比如第一条数据),会弹出一个提示框
Step2:选择 Ok,删除该数据
(3)添加数据
Step1:点击添加按钮
Step2:填写信息
Step3:点击确定,插入数据,并跳转到最后一页
三、后端项目环境搭建
搭建后的整个文件结构:
1、使用IDEA创建一个maven工程。
可以参考 https://www.cnblogs.com/l-y-h/p/11454933.html
2、引入项目依赖的jar包(配置依赖信息)。
需要配置Spring,SpringMVC,mybatis,数据库连接池,数据库驱动包,以及其他的jar包,比如junit等。
【pom.xml】
xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0modelVersion> <groupId>com.lyhgroupId> <artifactId>crudartifactId> <version>1.0-SNAPSHOTversion> <packaging>warpackaging> <name>crud Maven Webappname> <url>http://www.example.comurl> <properties> <jar.version>4.3.17.RELEASEjar.version> properties> <dependencies> <dependency> <groupId>org.springframeworkgroupId> <artifactId>spring-webmvcartifactId> <version>${jar.version}version> dependency> <dependency> <groupId>org.springframeworkgroupId> <artifactId>spring-jdbcartifactId> <version>${jar.version}version> dependency> <dependency> <groupId>org.springframeworkgroupId> <artifactId>spring-aspectsartifactId> <version>${jar.version}version> dependency> <dependency> <groupId>org.mybatisgroupId> <artifactId>mybatisartifactId> <version>3.4.6version> dependency> <dependency> <groupId>org.mybatisgroupId> <artifactId>mybatis-springartifactId> <version>1.3.2version> dependency> <dependency> <groupId>com.mchangegroupId> <artifactId>c3p0artifactId> <version>0.9.5.4version> dependency> <dependency> <groupId>mysqlgroupId> <artifactId>mysql-connector-javaartifactId> <version>8.0.18version> dependency> <dependency> <groupId>jstlgroupId> <artifactId>jstlartifactId> <version>1.2version> dependency> <dependency> <groupId>javax.servletgroupId> <artifactId>javax.servlet-apiartifactId> <version>4.0.1version> <scope>providedscope> dependency> <dependency> <groupId>junitgroupId> <artifactId>junitartifactId> <version>4.12version> <scope>testscope> dependency> <dependency> <groupId>org.mybatis.generatorgroupId> <artifactId>mybatis-generator-coreartifactId> <version>1.3.5version> dependency> <dependency> <groupId>org.springframeworkgroupId> <artifactId>spring-testartifactId> <version>${jar.version}version> <scope>testscope> dependency> <dependency> <groupId>com.fasterxml.jackson.coregroupId> <artifactId>jackson-databindartifactId> <version>2.10.0version> dependency> <dependency> <groupId>com.github.pagehelpergroupId> <artifactId>pagehelperartifactId> <version>5.0.0version> dependency> dependencies> <build> <finalName>crudfinalName> <pluginManagement> <plugins> <plugin> <artifactId>maven-clean-pluginartifactId> <version>3.1.0version> plugin> <plugin> <artifactId>maven-resources-pluginartifactId> <version>3.0.2version> plugin> <plugin> <artifactId>maven-compiler-pluginartifactId> <version>3.8.0version> plugin> <plugin> <artifactId>maven-surefire-pluginartifactId> <version>2.22.1version> plugin> <plugin> <artifactId>maven-war-pluginartifactId> <version>3.2.2version> plugin> <plugin> <artifactId>maven-install-pluginartifactId> <version>2.5.2version> plugin> <plugin> <artifactId>maven-deploy-pluginartifactId> <version>2.8.2version> plugin> plugins> pluginManagement> build> project>
3、配置ssm整合的文件(详细过程后续展开)。
web.xml,spring,springmvc,mybatis。
4、官方文档:
Spring:http://spring.io/docs
MyBatis:http://mybatis.github.io/mybatis-3/
分页组件的使用: https://github.com/pagehelper/Mybatis-PageHelper/blob/master/wikis/en/HowToUse.md
三、(3.1)SSM基本配置--配置web.xml
1、配置Spring容器
用于获取 Spring 配置文件(applicationContext.xml) 的读取位置。
【在web.xml中配置】 <context-param> <param-name>contextConfigLocationparam-name> <param-value>classpath:applicationContext.xmlparam-value> context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class> listener>
2、配置SpringMVC的前端控制器
用于拦截请求,并指定Spring MVC配置文件的读取位置。
通过getServletConfig().getInitParameter("initParam")的方式可以获取。
【在web.xml中配置】 <servlet> <servlet-name>springmvcDispatcherServletservlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class> <init-param> <param-name>contextConfigLocationparam-name> <param-value>classpath:dispatcher-servlet.xmlparam-value> init-param> <load-on-startup>1load-on-startup> servlet> <servlet-mapping> <servlet-name>springmvcDispatcherServletservlet-name> <url-pattern>/url-pattern> servlet-mapping>
注:
spring框架在加载web配置文件的时候。首先加载的是context-param配置的内容,而并不会去初始化servlet。只有进行了网站的跳转,经过DispatcherServlet的时候,才会初始化servlet,从而加载init-param中的内容。
3、配置解决乱码问题的过滤器
用于解决乱码问题。
【在web.xml中配置】 <filter> <filter-name>characterEncodingFilterfilter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class> <init-param> <param-name>encodingparam-name> <param-value>UTF-8param-value> init-param> <init-param> <param-name>forceRequestEncodingparam-name> <param-value>falseparam-value> init-param> <init-param> <param-name>forceResponseEncodingparam-name> <param-value>trueparam-value> init-param> filter> <filter-mapping> <filter-name>characterEncodingFilterfilter-name> <url-pattern>/*url-pattern> filter-mapping>
4、配置Rest风格的URI
由于浏览器form表单只支持GET与POST请求,而DELETE、PUT等method并不支持,spring3.0添加了一个过滤器(HiddenHttpMethodFilter),可以将这些请求转换为标准的http方法,使得支持GET、POST、PUT与DELETE请求。
【在web.xml中配置】 <filter> <filter-name>HiddenHttpMethodFilterfilter-name> <filter-class>org.springframework.web.filter.HiddenHttpMethodFilterfilter-class> filter> <filter-mapping> <filter-name>HiddenHttpMethodFilterfilter-name> <url-pattern>/*url-pattern> filter-mapping>
注:
web.xml 的加载顺序是:[context-param -> listener -> filter -> servlet -> spring] ,而同类型节点之间的实际程序调用的时候的顺序是根据对应的 mapping 的顺序进行调用的。
5、web.xml完整配置
xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1"> <context-param> <param-name>contextConfigLocationparam-name> <param-value>classpath:applicationContext.xmlparam-value> context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class> listener> <servlet> <servlet-name>springmvcDispatcherServletservlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class> <init-param> <param-name>contextConfigLocationparam-name> <param-value>classpath:dispatcher-servlet.xmlparam-value> init-param> <load-on-startup>1load-on-startup> servlet> <servlet-mapping> <servlet-name>springmvcDispatcherServletservlet-name> <url-pattern>/url-pattern> servlet-mapping> <filter> <filter-name>characterEncodingFilterfilter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class> <init-param> <param-name>encodingparam-name> <param-value>UTF-8param-value> init-param> <init-param> <param-name>forceRequestEncodingparam-name> <param-value>falseparam-value> init-param> <init-param> <param-name>forceResponseEncodingparam-name> <param-value>trueparam-value> init-param> filter> <filter-mapping> <filter-name>characterEncodingFilterfilter-name> <url-pattern>/*url-pattern> filter-mapping> <filter> <filter-name>HiddenHttpMethodFilterfilter-name> <filter-class>org.springframework.web.filter.HiddenHttpMethodFilterfilter-class> filter> <filter-mapping> <filter-name>HiddenHttpMethodFilterfilter-name> <url-pattern>/*url-pattern> filter-mapping> web-app>
三、(3.2)配置SpringMVC--dispatcher-servlet.xml
1、配置组件扫描方式
用于获取相关组件。 一般在SpringMVC的配置里,只扫描Controller层,Spring配置中扫描所有包,但是排除Controller层。
【在dispatcher-servlet.xml中配置】 <context:component-scan base-package="com.lyh.ssm.crud" use-default-filters="false"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" /> context:component-scan>
2、配置视图解析器
当设置视图名时,会自动添加前缀与后缀。
【在dispatcher-servlet.xml中配置】 <bean id="defaultViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/"/> <property name="suffix" value=".jsp"/> bean>
3、配置请求处理(标准配置一)
将DispatcherServlet请求映射配置为"/",则Spring MVC将捕获Web容器所有的请求(包括静态资源的请求),Spring MVC会将它们当成一个普通请求处理,因此找不到对应处理器将导致错误。所以为了使Spring框架能够捕获所有URL的请求,同时又将静态资源的请求转由Web容器处理,在将DispatcherServlet的请求映射配置为"/"前提下,使用
【在dispatcher-servlet.xml中配置】 <mvc:default-servlet-handler />
4、配置注解的处理器映射器和处理器适配器(标准配置二)
【在dispatcher-servlet.xml中配置】 【方式一:】 <mvc:annotation-driven /> 【方式二:】
5、dispatcher-servlet.xml完整配置
xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> <context:component-scan base-package="com.lyh.ssm.crud" use-default-filters="false"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" /> context:component-scan> <bean id="defaultViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/"/> <property name="suffix" value=".jsp"/> bean> <mvc:default-servlet-handler/> <mvc:annotation-driven /> beans>
三、(3.3)配置Spring--applicationContext.xml
1、配置组件扫描方式
用于获取相关组件 ,一般在Spring配置文件中扫描所有包,但是排除Controller层。
【在applicationContext.xml中配置】 <context:component-scan base-package="com.lyh.ssm.crud"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> context:component-scan>
2、配置数据库连接池
用于数据库操作。
【方式一:直接填写连接参数】 【在applicationContext.xml中配置】 <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="com.mysql.cj.jdbc.Driver">property> <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/lyh?useUnicode=true&characterEncoding=utf8">property> <property name="user" value="root">property> <property name="password" value="123456">property> bean> 【方式二:通过properties文件的方式获取连接参数】 【dbconfig.properties】 jdbc.driver = com.mysql.cj.jdbc.Driver jdbc.url = jdbc:mysql://localhost:3306/lyh?useUnicode=true&characterEncoding=utf8 jdbc.username = root jdbc.password = 123456 【在applicationContext.xml中配置】 <context:property-placeholder location="classpath:dbconfig.properties" /> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${jdbc.driverClass}">property> <property name="jdbcUrl" value="${jdbc.jdbcUrl}">property> <property name="user" value="${jdbc.user}">property> <property name="password" value="${jdbc.password}">property> bean>
三、(3.4)Spring和MyBatis整合配置--applicationContext.xml
jar包由MyBatis提供。
1、配置sqlSessionFactory
【在applicationContext.xml中配置】 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="configLocation" value="classpath:mybatis-config.xml"/> <property name="dataSource" ref="dataSource"/> <property name="mapperLocations" value="classpath:mappers/*.xml"/> bean>
2、配置批量执行的sqlSession(可选操作)
【在applicationContext.xml中配置】 <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate"> <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"/> <constructor-arg name="executorType" value="BATCH"/> bean>
3、配置mapper扫描器
【在applicationContext.xml中配置】 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.lyh.ssm.crud.dao">property> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> bean>
4、配置事务控制与切面(可选)
【在applicationContext.xml中配置】 <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> bean> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="post*" propagation="REQUIRED"/> <tx:method name="put*" propagation="REQUIRED"/> <tx:method name="delete*" propagation="REQUIRED"/> <tx:method name="get*" propagation="SUPPORTS" read-only="true"/> tx:attributes> tx:advice> <aop:config> <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.lyh.ssm.crud.service..*(..))"/> aop:config>
5、applicationContext.xml完整配置
【db.properties】 jdbc.driver = com.mysql.cj.jdbc.Driver jdbc.url = jdbc:mysql://localhost:3306/lyh?useUnicode=true&characterEncoding=utf8 jdbc.username = root jdbc.password = 123456 【applicationContext.xml】 xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd"> <context:component-scan base-package="com.lyh.ssm.crud"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> context:component-scan> <context:property-placeholder location="classpath:db.properties"/> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${jdbc.driver}">property> <property name="jdbcUrl" value="${jdbc.url}">property> <property name="user" value="${jdbc.username}">property> <property name="password" value="${jdbc.password}">property> bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="configLocation" value="classpath:mybatis-config.xml"/> <property name="dataSource" ref="dataSource"/> <property name="mapperLocations" value="classpath:mappers/*.xml"/> bean> <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate"> <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"/> <constructor-arg name="executorType" value="BATCH"/> bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.lyh.ssm.crud.dao">property> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> bean> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> bean> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="post*" propagation="REQUIRED"/> <tx:method name="put*" propagation="REQUIRED"/> <tx:method name="delete*" propagation="REQUIRED"/> <tx:method name="get*" propagation="SUPPORTS" read-only="true"/> tx:attributes> tx:advice> <aop:config> <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.lyh.ssm.crud.service..*(..))"/> aop:config> beans>
三、(3.5)Mybatis配置 -- mybatis-config.xml
1、配置全局参数
【在mybatis-config.xml中配置】 <settings> <setting name="mapUnderscoreToCamelCase" value="true"/> settings>
2、使用分页插件(pagehelper)
【在mybatis-config.xml中配置】 <plugins> <plugin interceptor="com.github.pagehelper.PageInterceptor">plugin> plugins>
3、mybatis-config.xml 完整配置
【mybatis-config.xml】 xml version="1.0" encoding="UTF-8" ?> DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <settings> <setting name="mapUnderscoreToCamelCase" value="true"/> settings> <plugins> <plugin interceptor="com.github.pagehelper.PageInterceptor">plugin> plugins> configuration>
四、逆向工程
参考: https://www.cnblogs.com/l-y-h/p/11748300.html
1、配置文件 -- src/mybatis-generator.xml
【src/mybatis-generator.xml】 xml version="1.0" encoding="UTF-8"?> DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> <generatorConfiguration> <context id="DB2Tables" targetRuntime="MyBatis3"> <commentGenerator> <property name="suppressAllComments" value="true" /> commentGenerator> <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/lyh" userId="root" password="123456"> jdbcConnection> <javaTypeResolver> <property name="forceBigDecimals" value="false"/> javaTypeResolver> <javaModelGenerator targetPackage="com.lyh.ssm.crud.bean" targetProject=".\src"> <property name="enableSubPackages" value="true"/> <property name="trimStrings" value="true"/> javaModelGenerator> <sqlMapGenerator targetPackage="com.lyh.ssm.crud.mapper" targetProject=".\src"> <property name="enableSubPackages" value="true"/> sqlMapGenerator> <javaClientGenerator type="XMLMAPPER" targetPackage="com.lyh.ssm.crud.dao" targetProject=".\src"> <property name="enableSubPackages" value="true"/> javaClientGenerator> <table tableName="emp" domainObjectName="Employee">table> <table tableName="dept" domainObjectName="Department">table> context> generatorConfiguration>
2、执行类 -- TestMybatisGenerator
import org.mybatis.generator.api.MyBatisGenerator; import org.mybatis.generator.config.Configuration; import org.mybatis.generator.config.xml.ConfigurationParser; import org.mybatis.generator.exception.InvalidConfigurationException; import org.mybatis.generator.exception.XMLParserException; import org.mybatis.generator.internal.DefaultShellCallback; import java.io.File; import java.io.IOException; import java.sql.SQLException; import java.util.ArrayList; import java.util.List; public class TestMybatisGenerator { public static void main(String[] args) throws IOException, XMLParserException, InvalidConfigurationException, SQLException, InterruptedException { Listwarnings = new ArrayList (); boolean overwrite = true; File configFile = new File("src//mybatis-generator.xml"); System.out.println(configFile); ConfigurationParser cp = new ConfigurationParser(warnings); Configuration config = cp.parseConfiguration(configFile); DefaultShellCallback callback = new DefaultShellCallback(overwrite); MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings); myBatisGenerator.generate(null); } }
注:
文件生成后,位置可能不对。需手动将文件复制到相应位置。
五、数据库 (mysql 1.8)
1、创建数据表
emp -- 创建一个 emp 表,其中 id 为主键且自增。 CREATE TABLE emp( id int primary key auto_increment, name varchar(50), salary double, age int, email varchar(50) ); dept -- 创建一个 dept 表,其中 deptId 为自增主键 CREATE TABLE dept( deptId INT(11) PRIMARY KEY AUTO_INCREMENT, deptName VARCHAR(255) ); -- 给 emp 表增加一个列 ALTER TABLE emp ADD COLUMN deptId INT(11); -- 并将 emp 中该列作为外键关联到 dept 的主键 ALTER TABLE emp ADD CONSTRAINT fk_emp_dept FOREIGN KEY(deptId) REFERENCES dept(deptId);
2、插入一些数据(可选操作)
dept INSERT INTO dept(deptId, deptName) VALUES(1, '开发部'); INSERT INTO dept(deptId, deptName) VALUES(2, '测试部'); INSERT INTO dept(deptId, deptName) VALUES(3, '产品部'); emp(id自增,给其插个 null 即可) INSERT INTO emp(id, name, salary, age, email, deptId) VALUES(null, 'tom', '8000', 23, '[email protected]', 1); INSERT INTO emp(id, name, salary, age, email, deptId) VALUES(null, 'jarry', '7000', 23, '[email protected]', 2); INSERT INTO emp(id, name, salary, age, email, deptId) VALUES(null, 'rick', '9000', 23, '[email protected]', 3); INSERT INTO emp(id, name, salary, age, email, deptId) VALUES(null, 'rose', '11000', 23, '[email protected]', 3); INSERT INTO emp(id, name, salary, age, email, deptId) VALUES(null, 'tim', '3300', 23, '[email protected]', 2); INSERT INTO emp(id, name, salary, age, email, deptId) VALUES(null, 'silla', '9100', 23, '[email protected]', 1); INSERT INTO emp(id, name, salary, age, email, deptId) VALUES(null, 'jack', '10000', 23, '[email protected]', 1); INSERT INTO emp(id, name, salary, age, email, deptId) VALUES(null, 'lisa', '6000', 23, '[email protected]', 2); INSERT INTO emp(id, name, salary, age, email, deptId) VALUES(null, 'mina', '9000', 23, '[email protected]', 2);
3、测试后台代码与数据库的交互(可选操作)
【在applicationContext.xml中配置 批量执行的 sqlSession】class="org.mybatis.spring.SqlSessionTemplate"> 【测试类 TestCodeEnvironment.java】 import com.lyh.ssm.crud.bean.Department; import com.lyh.ssm.crud.bean.Employee; import com.lyh.ssm.crud.dao.DepartmentMapper; import com.lyh.ssm.crud.dao.EmployeeMapper; import org.apache.ibatis.session.SqlSession; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import java.util.UUID; @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = "classpath:applicationContext.xml") public class TestCodeEnvironment { @Autowired EmployeeMapper employeeMapper; @Autowired DepartmentMapper departmentMapper; @Autowired SqlSession sqlSession; @Test public void testDept() { departmentMapper.insertSelective(new Department(null, "开发部")); departmentMapper.insertSelective(new Department(null, "测试部")); } @Test public void testEmp() { // 批量执行 sql 语句 EmployeeMapper employeeMapper = sqlSession.getMapper(EmployeeMapper.class); for (int i = 0; i < 2; i++){ String name = UUID.randomUUID().toString().substring(0, 5) + i; employeeMapper.insertSelective(new Employee(null, name, 1000.0, 20, "[email protected]",1)); } } }
六、后端代码
1、文件结构
2、代码
【com.lyh.ssm.crud.model.BaseModel】
package com.lyh.ssm.crud.model; import java.util.ArrayList; import java.util.List; /** * 基础返回类型, * messages 用于保存返回的信息 * level 用于保存信息的级别 * Level 为枚举类型 */ public class BaseModel { private Listmessages = new ArrayList *; import java.util.List; @RestController public class EmpController { @Autowired private EmpService empService; /** * 获取分页的数据 * @param pageNum 获取第几页的数据 * @param pageSize 返回数据的条数 * @return 返回数据 */ @GetMapping("/emps/{pageNum}") public EmpPageModel getAllEmp(@PathVariable Integer pageNum, @RequestParam Integer pageSize) { // step1:引入分页插件(PageHelper) // step2:每次查询前,设置查询的页面以及查询的条数,每次获取5条数据 PageHelper.startPage(pageNum, pageSize); // step3:执行分页查询 List<Employee> employeeList = empService.getAllEmp(); // step4:包装查询后的数据 PageInfo pageInfo = new PageInfo(employeeList); EmpPageModel empPageModel = new EmpPageModel(); if (employeeList.size() <= 0) { empPageModel.addMessage("获取分页数据失败"); empPageModel.setSuccess(false); empPageModel.setLevel(BaseModel.Level.error); return empPageModel; } empPageModel.addMessage("获取分页数据成功"); empPageModel.setSuccess(true); empPageModel.setLevel(BaseModel.Level.info); empPageModel.setPageInfo(pageInfo); return empPageModel; } /** * 获取某个员工的信息 * REST -- GET * @param id 员工的id * @return 返回数据 */ @GetMapping("/emp/{id}") public EmpModel getEmpById(@PathVariable Integer id) { EmpModel empModel = new EmpModel(); if (empService.getEmpById(id) == null) { empModel.addMessage("获取员工信息失败"); empModel.setSuccess(false); empModel.setLevel(BaseModel.Level.error); return empModel; } empModel.addMessage("获取员工信息成功"); empModel.setSuccess(true); empModel.setLevel(BaseModel.Level.info); empModel.addEmployee(empService.getEmpById(id)); return empModel; } /** * 删除某个员工的信息 * REST -- DELETE * @param id 员工的id * @return 返回数据 */ @RequestMapping(value = "/emp/{id}", method = RequestMethod.DELETE) public BaseModel deleteEmpById(@PathVariable Integer id) { BaseModel baseModel = new BaseModel(); if (empService.deleteEmpById(id) != 0) { baseModel.addMessage("删除员工信息成功"); baseModel.setSuccess(true); baseModel.setLevel(BaseModel.Level.info); return baseModel; } baseModel.addMessage("删除员工信息失败"); baseModel.setSuccess(false); baseModel.setLevel(BaseModel.Level.error); return baseModel; } /** * 向员工表中插入员工信息 * REST -- POST * 使用 @RequestBody 需注意,前台传递的参数名要与 Employee 里的参数名对应,否则接收不到值 * @param employee 员工信息 * @return 返回数据 */ @PostMapping("/emp") public BaseModel insertEmp(@RequestBody Employee employee) { BaseModel baseModel = new BaseModel(); if (empService.insertEmp(employee) != 0) { baseModel.addMessage("插入员工信息成功"); baseModel.setSuccess(true); baseModel.setLevel(BaseModel.Level.info); return baseModel; } baseModel.addMessage("插入员工信息失败"); baseModel.setSuccess(false); baseModel.setLevel(BaseModel.Level.error); return baseModel; } /** * 更新员工信息 * REST -- PUT * @param employee 员工信息 * @return 返回数据 */ @RequestMapping(value = "/emp/{id}", method = RequestMethod.PUT) public BaseModel updateEmp(@RequestBody Employee employee) { BaseModel baseModel = new BaseModel(); if (empService.updateEmp(employee) != 0) { baseModel.addMessage("更新员工信息成功"); baseModel.setSuccess(true); baseModel.setLevel(BaseModel.Level.info); return baseModel; } baseModel.addMessage("更新员工信息失败"); baseModel.setSuccess(false); baseModel.setLevel(BaseModel.Level.error); return baseModel; } } 【com.lyh.ssm.crud.controller.DeptController】 package com.lyh.ssm.crud.controller; import com.lyh.ssm.crud.model.BaseModel; import com.lyh.ssm.crud.model.DeptModel; import com.lyh.ssm.crud.service.DeptService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class DeptController { @Autowired private DeptService deptService; @GetMapping("/depts") public DeptModel getAllDept() { DeptModel deptModel = new DeptModel(); if (deptService.getAllDept().size() <= 0) { deptModel.addMessage("获取部门信息失败"); deptModel.setSuccess(false); deptModel.setLevel(BaseModel.Level.error); return deptModel; } deptModel.addMessage("获取部门信息成功"); deptModel.setSuccess(true); deptModel.setLevel(BaseModel.Level.info); deptModel.setDepartments(deptService.getAllDept()); return deptModel; } } 【com.lyh.ssm.crud.service.DeptService】 package com.lyh.ssm.crud.service; import com.lyh.ssm.crud.bean.Department; import com.lyh.ssm.crud.dao.DepartmentMapper; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; @Service public class DeptService { @Autowired private DepartmentMapper departmentMapper; public List<Department> getAllDept() { return departmentMapper.selectAll(); } } 【com.lyh.ssm.crud.service.EmpService】 package com.lyh.ssm.crud.service; import com.lyh.ssm.crud.bean.Employee; import com.lyh.ssm.crud.dao.EmployeeMapper; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; @Service public class EmpService { @Autowired private EmployeeMapper employeeMapper; /** * 获取某个员工的信息 * * @param id 某个员工的id * @return 某个员工的信息 */ public Employee getEmpById(Integer id) { return employeeMapper.selectByPrimaryKey(id); } /** * 获取所有员工的信息 * * @return 所有员工的信息 */ public List<Employee> getAllEmp() { return employeeMapper.selectAll(); } /** * 插入某个员工的信息 * * @param emp 某员工的信息 * @return 返回插入影响的行数 */ public Integer insertEmp(Employee emp) { return employeeMapper.insertSelective(emp); } /** * 删除某个员工的信息 * * @param id 员工的id * @return 返回删除影响的行数 */ public Integer deleteEmpById(Integer id) { return employeeMapper.deleteByPrimaryKey(id); } /** * 更新某个员工的信息 * @param employee 员工信息 * @return 返回修改影响的行数 */ public Integer updateEmp(Employee employee) { return employeeMapper.updateByPrimaryKeySelective(employee); } }(); private Level level = Level.info; private Boolean success = true; public Boolean getSuccess() { return success; } public void setSuccess(Boolean success) { this.success = success; } public List getMessages() { return messages; } public void setMessages(List messages) { this.messages = messages; } public Level getLevel() { return level; } public void setLevel(Level level) { this.level = level; } public enum Level { info, warn, error } public void addMessage(String message) { this.messages.add(message); } }
【com.lyh.ssm.crud.model.DeptModel】
package com.lyh.ssm.crud.model; import com.lyh.ssm.crud.bean.Department; import java.util.List; public class DeptModel extends BaseModel { private Listdepartments; public List getDepartments() { return departments; } public void setDepartments(List departments) { this.departments = departments; } }
【com.lyh.ssm.crud.model.EmpModel】
package com.lyh.ssm.crud.model; import com.lyh.ssm.crud.bean.Employee; import java.util.ArrayList; import java.util.List; /** * 员工返回信息类,用于返回员工信息 */ public class EmpModel extends BaseModel { private ListemployeeList = new ArrayList (); public List getEmployeeList() { return employeeList; } public void setEmployeeList(List employeeList) { this.employeeList = employeeList; } public void addEmployee(Employee emp) { this.employeeList.add(emp); } }
【com.lyh.ssm.crud.model.EmpPageModel】
package com.lyh.ssm.crud.model; import com.github.pagehelper.PageInfo; public class EmpPageModel extends BaseModel { private PageInfo pageInfo; public PageInfo getPageInfo() { return pageInfo; } public void setPageInfo(PageInfo pageInfo) { this.pageInfo = pageInfo; } }
【com.lyh.ssm.crud.controller.EmpController】 package com.lyh.ssm.crud.controller; import com.github.pagehelper.PageHelper; import com.github.pagehelper.PageInfo; import com.lyh.ssm.crud.bean.Employee; import com.lyh.ssm.crud.model.BaseModel; import com.lyh.ssm.crud.model.EmpModel; import com.lyh.ssm.crud.model.EmpPageModel; import com.lyh.ssm.crud.service.EmpService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.
【com.lyh.ssm.crud.dao.DepartmentMapper】
package com.lyh.ssm.crud.dao; import com.lyh.ssm.crud.bean.Department; import com.lyh.ssm.crud.bean.DepartmentExample; import java.util.List; import org.apache.ibatis.annotations.Param; public interface DepartmentMapper { long countByExample(DepartmentExample example); int deleteByExample(DepartmentExample example); int deleteByPrimaryKey(Integer deptid); int insert(Department record); int insertSelective(Department record); ListselectByExample(DepartmentExample example); Department selectByPrimaryKey(Integer deptid); int updateByExampleSelective(@Param("record") Department record, @Param("example") DepartmentExample example); int updateByExample(@Param("record") Department record, @Param("example") DepartmentExample example); int updateByPrimaryKeySelective(Department record); int updateByPrimaryKey(Department record); List /DepartmentMapper.xml 添加方法】 <select id="selectAll" resultMap="BaseResultMap"> select <include refid="Base_Column_List" /> from dept select> 【mappers/EmployeeMapper.xml】 <select id="selectAll" resultMap="BaseResultMap"> SELECT e.id AS id, e.name AS name, e.salary AS salary, e.age AS age, e.email AS email, d.deptId AS deptId, d.deptName AS deptName FROM emp e LEFT JOIN dept d ON e.deptId = d.deptId ORDER BY e.id select> <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap"> SELECT e.id AS id, e.name AS name, e.salary AS salary, e.age AS age, e.email AS email, d.deptId AS deptId, d.deptName AS deptName FROM emp e LEFT JOIN dept d ON e.deptId = d.deptId WHERE e.id = #{id,jdbcType=INTEGER} select>selectAll(); }
【com.lyh.ssm.crud.dao.EmployeeMapper】
package com.lyh.ssm.crud.dao; import com.lyh.ssm.crud.bean.Employee; import com.lyh.ssm.crud.bean.EmployeeExample; import java.util.List; import org.apache.ibatis.annotations.Param; public interface EmployeeMapper { long countByExample(EmployeeExample example); int deleteByExample(EmployeeExample example); int deleteByPrimaryKey(Integer id); int insert(Employee record); int insertSelective(Employee record); ListselectByExample(EmployeeExample example); List selectAll(); Employee selectByPrimaryKey(Integer id); int updateByExampleSelective(@Param("record") Employee record, @Param("example") EmployeeExample example); int updateByExample(@Param("record") Employee record, @Param("example") EmployeeExample example); int updateByPrimaryKeySelective(Employee record); int updateByPrimaryKey(Employee record); } 【mappers
七、前端代码--静态页面
1、非 template/render 模式下
此时 部分组件名前 需加前缀 i- 才可使用。
比如:
Button --> i-button
Table --> i-table
Select --> i-select
Option --> i-option
Form --> i-form
FormItem --> form-item
【非 template/render 模式下】 DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>ViewUI exampletitle> <link rel="stylesheet" type="text/css" href="http://unpkg.com/view-design/dist/styles/iview.css"> <script type="text/javascript" src="http://vuejs.org/js/vue.min.js">script> <script type="text/javascript" src="http://unpkg.com/view-design/dist/iview.min.js">script> head> <body> <div id="app"> <div style="width: 1200px; margin: 0 auto;" class="layout"> <Layout> <header> <row> <Divider orientation="left"> <h1>员工列表h1> Divider> row> <row justify="end" type="flex"> <i-col style="margin-right: 5px"><i-button type="primary" icon="md-add" @click="create">添加i-button>i-col> <i-col style="margin-right: 5px"><i-button type="success" icon="md-settings" @click="setUp = true">设置i-button>i-col> row> header> <Content> <i-table :data="data2" :columns="tableColumns1" :stripe="showStripe" :border="showBorder" :showHeader="showHeader" :size="tableSize" :height="fixedHeader ? 250 : ''"> <template slot-scope="{ row }" slot="name"> <strong>{{ row.name }}strong> template> <template slot-scope="{ row, index }" slot="action"> <i-button type="primary" size="small" style="margin-right: 5px" @click="show(index)" icon="ios-create-outline">编辑i-button> <i-button type="error" size="small" @click="remove(index)" icon="ios-trash">删除i-button> template> i-table> <div style="margin: 10px;overflow: hidden"> <div style="float: right;"> <Page :total="data1.length" :pageSize="pageSize" :current="currentPage" @on-change="changePage" show-sizer show-elevator show-total @on-page-size-change="changePageSize">Page> div> div> Content> Layout> <Drawer title="Set up" :closable="true" :mask="false" v-model="setUp"> <div style="margin: 10px"> Table Setting<br> <i-switch v-model="showBorder" style="margin-right: 5px">i-switch>Display border<br> <i-switch v-model="showStripe" style="margin-right: 5px">i-switch>Display stripe<br> <i-switch v-model="showIndex" style="margin-right: 5px">i-switch>Display index<br> <i-switch v-model="showCheckbox" style="margin-right: 5px">i-switch>Display multi choice<br> <i-switch v-model="showHeader" style="margin-right: 5px">i-switch>Display header<br> <i-switch v-model="fixedHeader" style="margin-right: 5px">i-switch>Table scrolling<br> <br><br> Table size <i-select v-model="tableSize" style="width:200px"> <i-option value="large">largei-option> <i-option value="default">medium(default)i-option> <i-option value="small">smalli-option> i-select> div> Drawer> <Modal v-model="empModal" title="Emp Info" @on-ok="okEditor" @on-cancel="cancelEditor"> <i-form :label-width="80"> <form-item label="Name:"> <i-input v-model="empInfo.name" placeholder="Name..." style="width: 300px;" /> form-item> <form-item label="Salary:"> <i-input v-model="empInfo.salary" placeholder="Salary..." style="width: 300px;" /> form-item> <form-item label="Age:"> <i-input v-model="empInfo.age" placeholder="Age..." style="width: 300px;" /> form-item> <form-item label="Email:"> <i-input v-model="empInfo.email" placeholder="Email..." style="width: 300px;" /> form-item> <form-item label="DeptName:"> <i-select v-model="empInfo.deptName"> <i-option v-for="(item, index) in dept" :key="index" :value="item.deptName"> {{item.deptName}} i-option> i-select> form-item> i-form> Modal> div> div> <script> new Vue({ el: '#app', data() { return { // 添加与编辑复用 modal 框,false为添加,true为编辑 createOrEditor: false, // 是否打开员工信息框 empModal: false, // 用于保存一个员工的信息 empInfo: {}, // 是否打开设置 setUp: false, // 当前页码 currentPage: 1, // 每页数据的条数 pageSize: 10, // 表格的列 tableColumns1: [{ // 分页时,若要出现自动索引,设置type = "index2",并使用 render 来返回索引值 type: 'index2', width: 80, align: 'center', render: (h, params) => { return h('span', params.index + (this.currentPage - 1) * this.pageSize + 1); } }, { title: 'Name', slot: 'name' }, { title: 'Salary', key: 'salary', sortable: true }, { title: 'Age', key: 'age', sortable: true }, { title: 'Email', key: 'email' }, { title: 'DeptName', key: 'deptName' }, { title: 'Action', slot: 'action', width: 200, align: 'center' } ], dept: [{ deptId: '1', deptName: '开发部' },{ deptId: '2', deptName: '测试部' },{ deptId: '3', deptName: '产品部' }], // 表格的源数据 data1: [{ name: 'John Brown', salary: 6000, age: 18, email: '[email protected]', deptId: '1', deptName: '开发部' }, { name: 'Jim Green', salary: 6000, age: 24, email: '[email protected]', deptId: '2', deptName: '测试部' }, { name: 'Joe Black', salary: 6000, age: 30, email: '[email protected]', deptId: '3', deptName: '产品部' }, { name: 'Jon Snow', salary: 6000, age: 26, email: '[email protected]', deptId: '1', deptName: '开发部' }, { name: 'John Brown', salary: 6000, age: 18, email: '[email protected]', deptId: '2', deptName: '测试部' }, { name: 'Jim Green', salary: 6000, age: 24, email: '[email protected]', deptId: '1', deptName: '开发部' }, { name: 'Joe Black', salary: 6000, age: 30, email: '[email protected]', deptId: '1', deptName: '开发部' }, { name: 'Jon Snow', salary: 6000, age: 26, email: '[email protected]', deptId: '2', deptName: '测试部' }, { name: 'Jim Green', salary: 6000, age: 24, email: '[email protected]', deptId: '1', deptName: '开发部' }, { name: 'Joe Black', salary: 6000, age: 30, email: '[email protected]', deptId: '2', deptName: '测试部' }, { name: 'Jon Snow', salary: 6000, age: 26, email: '[email protected]', deptId: '3', deptName: '产品部' } ], // 表格每页的数据 data2: [], // 表格边框是否显示 showBorder: false, // 表格斑马纹是否显示 showStripe: false, // 表格头是否显示 showHeader: true, // 表格索引是否显示 showIndex: true, // 表格多选框是否显示 showCheckbox: false, // 表格滚动条是否开启 fixedHeader: false, // 改变表格大小 tableSize: 'default' } }, methods: { changePage(index) { // 改变当前的页码,并获取当前页码所拥有的数据 this.currentPage = index // 注意,此处不能直接用 = 赋值。使用 = 后(指向的地址相同),修改 data2 的同时会修改 data1 this.data2 = [].concat(this.data1.slice((index - 1) * this.pageSize, index * this.pageSize)) }, show(index) { // 弹出一个模态框,用于展示某条数据的信息 this.empInfo = Object.assign(this.empInfo, this.data2[index]) this.empModal = true this.createOrEditor = true this.empInfo = Object.assign(this.empInfo, {index: index}) }, create() { // 用于添加一条信息 this.empInfo = [] this.empModal = true this.createOrEditor = false }, remove(index) { // 删除某条数据(删除源数据) this.data1.splice((this.currentPage - 1) * 10 + index, 1) }, changePageSize(index) { // 改变每页显示的条数 this.$Message.info({ content: '当前页面显示条数修改为: ' + index + '条/页' }) // 改变后,跳转到首页,并刷新列表 this.currentPage = 1 this.pageSize = index this.changePage(this.currentPage) }, okEditor () { if (this.createOrEditor) { // 编辑的操作,修改数据 this.data1.splice((this.currentPage - 1) * 10 + this.empInfo.index, 1, this.empInfo) } else { // 添加的操作,修改数据 this.data1.push(Object.assign({}, this.empInfo)) } this.empInfo = {} }, cancelEditor () { // 取消编辑的操作 this.$Message.info({ content: '操作取消' }) } }, watch: { showIndex(newVal) { if (newVal) { // 为true时,在首部增加一个索引列 this.tableColumns1.unshift({ // 分页时,若要出现自动索引,设置type = "index2",并使用 render 来返回索引值 type: 'index2', width: 80, align: 'center', render: (h, params) => { return h('span', params.index + (this.currentPage - 1) * this.pageSize + 1); } }) } else { // 为false时,若首部存在索引列,则移除该列 this.tableColumns1.forEach((item, index) => { if (item.type === 'index2') { this.tableColumns1.splice(index, 1) } }) } }, showCheckbox(newVal) { if (newVal) { // 为 true 时,在首部增加一多选框列, this.tableColumns1.unshift({ type: 'selection', width: 60, align: 'center' }) } else { // 为false时,若存在多选框列,则移除该列 this.tableColumns1.forEach((item, index) => { if (item.type === 'selection') { this.tableColumns1.splice(index, 1) } }) } }, data1() { // 当列表数据改变时(比如删除某数据),触发一次刷新列表的操作 if (!this.createOrEditor) { // 若为添加数据,则跳转到最后一个页面 this.changePage(Math.ceil(this.data1.length / this.pageSize)) } else { this.changePage(this.currentPage) } } }, mounted() { // 页面加载时,触发第一次刷新列表的操作 this.changePage(this.currentPage) } }) script> body> html>
2、template/render 模式下
(1)使用 vue-cli3.0 创建项目。
参考地址:https://www.cnblogs.com/l-y-h/p/11241503.html
(2)使用 npm 安装使用。
参考地址:https://www.cnblogs.com/l-y-h/p/12001549.html#_label0_1
【main.js】 import Vue from 'vue' import App from './App.vue' // step1: 引入 ViewUI import ViewUI from 'view-design' // step2: 引入 css import 'view-design/dist/styles/iview.css' Vue.config.productionTip = false // step3:声明使用 ViewUI Vue.use(ViewUI) new Vue({ render: h => h(App), }).$mount('#app') 【App.vue】 <template> <div style="width: 1200px; margin: 0 auto;" class="layout"> <Layout> <header> <row> <Divider orientation="left"> <h1>员工列表h1> Divider> row> <row justify="end" type="flex"> <i-col style="margin-right: 5px"><Button type="primary" icon="md-add" @click="create">添加Button>i-col> <i-col style="margin-right: 5px"><Button type="success" icon="md-settings" @click="setUp = true">设置Button>i-col> row> header> <Content> <Table :data="data2" :columns="tableColumns1" :stripe="showStripe" :border="showBorder" :showHeader="showHeader" :size="tableSize" :height="fixedHeader ? 250 : ''"> <template slot-scope="{ row }" slot="name"> <strong>{{ row.name }}strong> template> <template slot-scope="{ row, index }" slot="action"> <Button type="primary" size="small" style="margin-right: 5px" @click="show(index)" icon="ios-create-outline">编辑Button> <Button type="error" size="small" @click="remove(index)" icon="ios-trash">删除Button> template> Table> <div style="margin: 10px;overflow: hidden"> <div style="float: right;"> <Page :total="data1.length" :pageSize="pageSize" :current="currentPage" @on-change="changePage" show-sizer show-elevator show-total @on-page-size-change="changePageSize">Page> div> div> Content> Layout> <Drawer title="Set up" :closable="true" :mask="false" v-model="setUp"> <div style="margin: 10px"> Table Setting<br> <i-switch v-model="showBorder" style="margin-right: 5px">i-switch>Display border<br> <i-switch v-model="showStripe" style="margin-right: 5px">i-switch>Display stripe<br> <i-switch v-model="showIndex" style="margin-right: 5px">i-switch>Display index<br> <i-switch v-model="showCheckbox" style="margin-right: 5px">i-switch>Display multi choice<br> <i-switch v-model="showHeader" style="margin-right: 5px">i-switch>Display header<br> <i-switch v-model="fixedHeader" style="margin-right: 5px">i-switch>Table scrolling<br> <br><br> Table size <Select v-model="tableSize" style="width:200px"> <Option value="large">largeOption> <Option value="default">medium(default)Option> <Option value="small">smallOption> Select> div> Drawer> <Modal v-model="empModal" title="Emp Info" @on-ok="okEditor" @on-cancel="cancelEditor"> <Form :label-width="80"> <FormItem label="Name:"> <Input v-model="empInfo.name" placeholder="Name..." style="width: 300px;" /> FormItem> <FormItem label="Salary:"> <Input v-model="empInfo.salary" placeholder="Salary..." style="width: 300px;" /> FormItem> <FormItem label="Age:"> <Input v-model="empInfo.age" placeholder="Age..." style="width: 300px;" /> FormItem> <FormItem label="Email:"> <Input v-model="empInfo.email" placeholder="Email..." style="width: 300px;" /> FormItem> <FormItem label="DeptName:"> <Select v-model="empInfo.deptName"> <Option v-for="(item, index) in dept" :key="index" :value="item.deptName"> {{item.deptName}} Option> Select> FormItem> Form> Modal> div> template> <script> export default { data() { return { // 添加与编辑复用 modal 框,false为添加,true为编辑 createOrEditor: false, // 是否打开员工信息框 empModal: false, // 用于保存一个员工的信息 empInfo: {}, // 是否打开设置 setUp: false, // 当前页码 currentPage: 1, // 每页数据的条数 pageSize: 10, // 表格的列 tableColumns1: [{ // 分页时,若要出现自动索引,设置type = "index2",并使用 render 来返回索引值 type: 'index2', width: 80, align: 'center', render: (h, params) => { return h('span', params.index + (this.currentPage - 1) * this.pageSize + 1); } }, { title: 'Name', slot: 'name' }, { title: 'Salary', key: 'salary', sortable: true }, { title: 'Age', key: 'age', sortable: true }, { title: 'Email', key: 'email' }, { title: 'DeptName', key: 'deptName' }, { title: 'Action', slot: 'action', width: 200, align: 'center' } ], dept: [{ deptId: '1', deptName: '开发部' },{ deptId: '2', deptName: '测试部' },{ deptId: '3', deptName: '产品部' }], // 表格的源数据 data1: [{ name: 'John Brown', salary: 6000, age: 18, email: '[email protected]', deptId: '1', deptName: '开发部' }, { name: 'Jim Green', salary: 6000, age: 24, email: '[email protected]', deptId: '2', deptName: '测试部' }, { name: 'Joe Black', salary: 6000, age: 30, email: '[email protected]', deptId: '3', deptName: '产品部' }, { name: 'Jon Snow', salary: 6000, age: 26, email: '[email protected]', deptId: '1', deptName: '开发部' }, { name: 'John Brown', salary: 6000, age: 18, email: '[email protected]', deptId: '2', deptName: '测试部' }, { name: 'Jim Green', salary: 6000, age: 24, email: '[email protected]', deptId: '1', deptName: '开发部' }, { name: 'Joe Black', salary: 6000, age: 30, email: '[email protected]', deptId: '1', deptName: '开发部' }, { name: 'Jon Snow', salary: 6000, age: 26, email: '[email protected]', deptId: '2', deptName: '测试部' }, { name: 'Jim Green', salary: 6000, age: 24, email: '[email protected]', deptId: '1', deptName: '开发部' }, { name: 'Joe Black', salary: 6000, age: 30, email: '[email protected]', deptId: '2', deptName: '测试部' }, { name: 'Jon Snow', salary: 6000, age: 26, email: '[email protected]', deptId: '3', deptName: '产品部' } ], // 表格每页的数据 data2: [], // 表格边框是否显示 showBorder: false, // 表格斑马纹是否显示 showStripe: false, // 表格头是否显示 showHeader: true, // 表格索引是否显示 showIndex: true, // 表格多选框是否显示 showCheckbox: false, // 表格滚动条是否开启 fixedHeader: false, // 改变表格大小 tableSize: 'default' } }, methods: { changePage(index) { // 改变当前的页码,并获取当前页码所拥有的数据 this.currentPage = index // 注意,此处不能直接用 = 赋值。使用 = 后(指向的地址相同),修改 data2 的同时会修改 data1 this.data2 = [].concat(this.data1.slice((index - 1) * this.pageSize, index * this.pageSize)) }, show(index) { // 弹出一个模态框,用于展示某条数据的信息 this.empInfo = Object.assign(this.empInfo, this.data2[index]) this.empModal = true this.createOrEditor = true this.empInfo = Object.assign(this.empInfo, {index: index}) }, create() { // 用于添加一条信息 this.empInfo = [] this.empModal = true this.createOrEditor = false }, remove(index) { // 删除某条数据(删除源数据) this.data1.splice((this.currentPage - 1) * 10 + index, 1) }, changePageSize(index) { // 改变每页显示的条数 this.$Message.info({ content: '当前页面显示条数修改为: ' + index + '条/页' }) // 改变后,跳转到首页,并刷新列表 this.currentPage = 1 this.pageSize = index this.changePage(this.currentPage) }, okEditor () { if (this.createOrEditor) { // 编辑的操作,修改数据 this.data1.splice((this.currentPage - 1) * 10 + this.empInfo.index, 1, this.empInfo) } else { // 添加的操作,修改数据 this.data1.push(Object.assign({}, this.empInfo)) } this.empInfo = {} }, cancelEditor () { // 取消编辑的操作 this.$Message.info({ content: '操作取消' }) } }, watch: { showIndex(newVal) { if (newVal) { // 为true时,在首部增加一个索引列 this.tableColumns1.unshift({ // 分页时,若要出现自动索引,设置type = "index2",并使用 render 来返回索引值 type: 'index2', width: 80, align: 'center', render: (h, params) => { return h('span', params.index + (this.currentPage - 1) * this.pageSize + 1); } }) } else { // 为false时,若首部存在索引列,则移除该列 this.tableColumns1.forEach((item, index) => { if (item.type === 'index2') { this.tableColumns1.splice(index, 1) } }) } }, showCheckbox(newVal) { if (newVal) { // 为 true 时,在首部增加一多选框列, this.tableColumns1.unshift({ type: 'selection', width: 60, align: 'center' }) } else { // 为false时,若存在多选框列,则移除该列 this.tableColumns1.forEach((item, index) => { if (item.type === 'selection') { this.tableColumns1.splice(index, 1) } }) } }, data1() { // 当列表数据改变时(比如删除某数据),触发一次刷新列表的操作 if (!this.createOrEditor) { // 若为添加数据,则跳转到最后一个页面 this.changePage(Math.ceil(this.data1.length / this.pageSize)) } else { this.changePage(this.currentPage) } } }, mounted() { // 页面加载时,触发第一次刷新列表的操作 this.changePage(this.currentPage) } } script>
文件目录结构:
八、前端代码
1、解决跨域问题
可以参考:https://www.cnblogs.com/l-y-h/p/11815452.html
(1)在 main.js 中配置 baseURL
【main.js】
import Vue from 'vue'
import App from './App.vue'
import ViewUI from 'view-design'
import 'view-design/dist/styles/iview.css'
import Axios from 'axios'
Vue.config.productionTip = false
Vue.use(ViewUI)
Vue.prototype.$axios = Axios
Axios.defaults.baseURL = '/api'
new Vue({
render: h => h(App),
}).$mount('#app')
(2)在 vue.config.js 中配置跨域代理
【vue.config.js】
module.exports = {
devServer: {
proxy: {
'/api': {
// 此处的写法,目的是为了 将 /api 替换成 http://localhost:9000/crud
target: 'http://localhost:9000/crud/',
// 允许跨域
changeOrigin: true,
ws: true,
pathRewrite: {
'^/api': ''
}
}
}
}
}
(3)使用 axios
【自定义一个 api.js 文件】 import Axios from 'axios' export function getAllEmps(params) { return new Promise((resolve, reject) => { Axios.get('/emps/' + params.pageNum, { params }).then(res => { resolve(res); }).catch(res => { reject(res) }) }) } 【使用时,在需要使用的地方引入这个js文件即可】 <template> template> <script> import { getAllEmps } from './api/api.js' export default { data() { return { currentPage: 1, pageSize: 2 } }, mounted() { // 不需要使用 this.getAllEmps(),直接使用 getAllEmps() 即可 getAllEmps({ pageNum: this.currentPage, pageSize: this.pageSize }) } } script> 【App.vue】 <template> <div style="width: 1200px; margin: 0 auto;" class="layout"> <Layout> <header> <row> <Divider orientation="left"> <h1>员工列表h1> Divider> row> <row justify="end" type="flex"> <i-col style="margin-right: 5px"><Button type="primary" icon="md-add" @click="create">添加Button>i-col> <i-col style="margin-right: 5px"><Button type="success" icon="md-settings" @click="setUp = true">设置Button>i-col> row> header> <Content> <Table :data="data2" :columns="tableColumns1" :stripe="showStripe" :border="showBorder" :showHeader="showHeader" :size="tableSize" :height="fixedHeader ? 250 : ''"> <template slot-scope="{ row }" slot="name"> <strong>{{ row.name }}strong> template> <template slot-scope="{ row, index }" slot="action"> <Button type="primary" size="small" style="margin-right: 5px" @click="show(index)" icon="ios-create-outline">编辑Button> <Button type="error" size="small" @click="remove(index)" icon="ios-trash">删除Button> template> Table> <div style="margin: 10px;overflow: hidden"> <div style="float: right;"> <Page :total="data1.length" :pageSize="pageSize" :current="currentPage" @on-change="changePage" show-sizer show-elevator show-total @on-page-size-change="changePageSize">Page> div> div> Content> Layout> <Drawer title="Set up" :closable="true" :mask="false" v-model="setUp"> <div style="margin: 10px"> Table Setting<br> <i-switch v-model="showBorder" style="margin-right: 5px">i-switch>Display border<br> <i-switch v-model="showStripe" style="margin-right: 5px">i-switch>Display stripe<br> <i-switch v-model="showIndex" style="margin-right: 5px">i-switch>Display index<br> <i-switch v-model="showCheckbox" style="margin-right: 5px">i-switch>Display multi choice<br> <i-switch v-model="showHeader" style="margin-right: 5px">i-switch>Display header<br> <i-switch v-model="fixedHeader" style="margin-right: 5px">i-switch>Table scrolling<br> <br><br> Table size <Select v-model="tableSize" style="width:200px"> <Option value="large">largeOption> <Option value="default">medium(default)Option> <Option value="small">smallOption> Select> div> Drawer> <Modal v-model="empModal" title="Emp Info" @on-ok="okEditor" @on-cancel="cancelEditor"> <Form :label-width="80"> <FormItem label="Name:"> <Input v-model="empInfo.name" placeholder="Name..." style="width: 300px;" /> FormItem> <FormItem label="Salary:"> <Input v-model="empInfo.salary" placeholder="Salary..." style="width: 300px;" /> FormItem> <FormItem label="Age:"> <Input v-model="empInfo.age" placeholder="Age..." style="width: 300px;" /> FormItem> <FormItem label="Email:"> <Input v-model="empInfo.email" placeholder="Email..." style="width: 300px;" /> FormItem> <FormItem label="DeptName:"> <Select v-model="empInfo.deptName"> <Option v-for="(item, index) in dept" :key="index" :value="item.deptName"> {{item.deptName}} Option> Select> FormItem> Form> Modal> div> template> <script> import { getAllEmps } from './api/api.js' export default { data() { return { // 添加与编辑复用 modal 框,false为添加,true为编辑 createOrEditor: false, // 是否打开员工信息框 empModal: false, // 用于保存一个员工的信息 empInfo: {}, // 是否打开设置 setUp: false, // 当前页码 currentPage: 1, // 每页数据的条数 pageSize: 10, // 表格的列 tableColumns1: [{ // 分页时,若要出现自动索引,设置type = "index2",并使用 render 来返回索引值 type: 'index2', width: 80, align: 'center', render: (h, params) => { return h('span', params.index + (this.currentPage - 1) * this.pageSize + 1); } }, { title: 'Name', slot: 'name' }, { title: 'Salary', key: 'salary', sortable: true }, { title: 'Age', key: 'age', sortable: true }, { title: 'Email', key: 'email' }, { title: 'DeptName', key: 'deptName' }, { title: 'Action', slot: 'action', width: 200, align: 'center' } ], dept: [{ deptId: '1', deptName: '开发部' },{ deptId: '2', deptName: '测试部' },{ deptId: '3', deptName: '产品部' }], // 表格的源数据 data1: [{ name: 'John Brown', salary: 6000, age: 18, email: '[email protected]', deptId: '1', deptName: '开发部' }, { name: 'Jim Green', salary: 6000, age: 24, email: '[email protected]', deptId: '2', deptName: '测试部' }, { name: 'Joe Black', salary: 6000, age: 30, email: '[email protected]', deptId: '3', deptName: '产品部' }, { name: 'Jon Snow', salary: 6000, age: 26, email: '[email protected]', deptId: '1', deptName: '开发部' }, { name: 'John Brown', salary: 6000, age: 18, email: '[email protected]', deptId: '2', deptName: '测试部' }, { name: 'Jim Green', salary: 6000, age: 24, email: '[email protected]', deptId: '1', deptName: '开发部' }, { name: 'Joe Black', salary: 6000, age: 30, email: '[email protected]', deptId: '1', deptName: '开发部' }, { name: 'Jon Snow', salary: 6000, age: 26, email: '[email protected]', deptId: '2', deptName: '测试部' }, { name: 'Jim Green', salary: 6000, age: 24, email: '[email protected]', deptId: '1', deptName: '开发部' }, { name: 'Joe Black', salary: 6000, age: 30, email: '[email protected]', deptId: '2', deptName: '测试部' }, { name: 'Jon Snow', salary: 6000, age: 26, email: '[email protected]', deptId: '3', deptName: '产品部' } ], // 表格每页的数据 data2: [], // 表格边框是否显示 showBorder: false, // 表格斑马纹是否显示 showStripe: false, // 表格头是否显示 showHeader: true, // 表格索引是否显示 showIndex: true, // 表格多选框是否显示 showCheckbox: false, // 表格滚动条是否开启 fixedHeader: false, // 改变表格大小 tableSize: 'default' } }, methods: { changePage(index) { // 改变当前的页码,并获取当前页码所拥有的数据 this.currentPage = index // 注意,此处不能直接用 = 赋值。使用 = 后(指向的地址相同),修改 data2 的同时会修改 data1 this.data2 = [].concat(this.data1.slice((index - 1) * this.pageSize, index * this.pageSize)) }, show(index) { // 弹出一个模态框,用于展示某条数据的信息 this.empInfo = Object.assign(this.empInfo, this.data2[index]) this.empModal = true this.createOrEditor = true this.empInfo = Object.assign(this.empInfo, {index: index}) }, create() { // 用于添加一条信息 this.empInfo = [] this.empModal = true this.createOrEditor = false }, remove(index) { // 删除某条数据(删除源数据) this.data1.splice((this.currentPage - 1) * 10 + index, 1) }, changePageSize(index) { // 改变每页显示的条数 this.$Message.info({ content: '当前页面显示条数修改为: ' + index + '条/页' }) // 改变后,跳转到首页,并刷新列表 this.currentPage = 1 this.pageSize = index this.changePage(this.currentPage) }, okEditor () { if (this.createOrEditor) { // 编辑的操作,修改数据 this.data1.splice((this.currentPage - 1) * 10 + this.empInfo.index, 1, this.empInfo) } else { // 添加的操作,修改数据 this.data1.push(Object.assign({}, this.empInfo)) } this.empInfo = {} }, cancelEditor () { // 取消编辑的操作 this.$Message.info({ content: '操作取消' }) } }, watch: { showIndex(newVal) { if (newVal) { // 为true时,在首部增加一个索引列 this.tableColumns1.unshift({ // 分页时,若要出现自动索引,设置type = "index2",并使用 render 来返回索引值 type: 'index2', width: 80, align: 'center', render: (h, params) => { return h('span', params.index + (this.currentPage - 1) * this.pageSize + 1); } }) } else { // 为false时,若首部存在索引列,则移除该列 this.tableColumns1.forEach((item, index) => { if (item.type === 'index2') { this.tableColumns1.splice(index, 1) } }) } }, showCheckbox(newVal) { if (newVal) { // 为 true 时,在首部增加一多选框列, this.tableColumns1.unshift({ type: 'selection', width: 60, align: 'center' }) } else { // 为false时,若存在多选框列,则移除该列 this.tableColumns1.forEach((item, index) => { if (item.type === 'selection') { this.tableColumns1.splice(index, 1) } }) } }, data1() { // 当列表数据改变时(比如删除某数据),触发一次刷新列表的操作 if (!this.createOrEditor) { // 若为添加数据,则跳转到最后一个页面 this.changePage(Math.ceil(this.data1.length / this.pageSize)) } else { this.changePage(this.currentPage) } } }, mounted() { // 页面加载时,触发第一次刷新列表的操作 this.changePage(this.currentPage) // 不需要使用 this.getAllEmps(),直接使用 getAllEmps() 即可 getAllEmps({ pageNum: this.currentPage, pageSize: this.pageSize }).then((res) => {
console.log(res)
}) } } script>
2、调用接口、与后台进行交互
(1)接口详情
【获取所有emp信息(分页查询)】
GET param
http://localhost:9000/crud/emps/{pageNum} pageSize
【获取某个员工的信息(没用上)】
GET
http://localhost:9000/crud/emp/{id}
【删除某个员工的信息】
DELETE
http://localhost:9000/crud/emp/{id}
【插入某条数据】
POST
http://localhost:9000/crud/emp Employee
【更新某条数据】
PUT
http://localhost:9000/crud/emp/{id} Employee
【获取部门信息】
GET
http://localhost:9000/crud/depts
(2)完整代码
代码结构截图:
【main.js】 import Vue from 'vue' import App from './App.vue' import ViewUI from 'view-design' import 'view-design/dist/styles/iview.css' import Axios from 'axios' Vue.config.productionTip = false Vue.use(ViewUI) Vue.prototype.$axios = Axios Axios.defaults.baseURL = '/api' new Vue({ render: h => h(App), }).$mount('#app') 【App.vue】 <template> <div style="width: 1200px; margin: 0 auto;" class="layout"> <Layout> <header> <row> <Divider orientation="left"> <h1>员工列表h1> Divider> row> <row justify="end" type="flex"> <i-col style="margin-right: 5px"><Button type="primary" icon="md-add" @click="create">添加Button>i-col> <i-col style="margin-right: 5px"><Button type="success" icon="md-settings" @click="setUp = true">设置Button>i-col> row> header> <Content> <Table :data="data2" :columns="tableColumns1" :stripe="showStripe" :border="showBorder" :showHeader="showHeader" :size="tableSize" :height="fixedHeader ? 250 : ''"> <template slot-scope="{ row }" slot="name"> <strong>{{ row.name }}strong> template> <template slot-scope="{ row, index }" slot="action"> <Button type="primary" size="small" style="margin-right: 5px" @click="show(index)" icon="ios-create-outline">编辑Button> <Button type="error" size="small" @click="remove(row, index)" icon="ios-trash">删除Button> template> Table> <div style="margin: 10px;overflow: hidden"> <div style="float: right;"> <Page :total="total" :pageSize="pageSize" :current="currentPage" @on-change="changePage" show-sizer show-elevator show-total @on-page-size-change="changePageSize">Page> div> div> Content> Layout> <Drawer title="Set up" :closable="true" :mask="false" v-model="setUp"> <div style="margin: 10px"> Table Setting<br> <i-switch v-model="showBorder" style="margin-right: 5px">i-switch>Display border<br> <i-switch v-model="showStripe" style="margin-right: 5px">i-switch>Display stripe<br> <i-switch v-model="showIndex" style="margin-right: 5px">i-switch>Display index<br> <i-switch v-model="showCheckbox" style="margin-right: 5px">i-switch>Display multi choice<br> <i-switch v-model="showHeader" style="margin-right: 5px">i-switch>Display header<br> <i-switch v-model="fixedHeader" style="margin-right: 5px">i-switch>Table scrolling<br> <br><br> Table size <Select v-model="tableSize" style="width:200px"> <Option value="large">largeOption> <Option value="default">medium(default)Option> <Option value="small">smallOption> Select> div> Drawer> <Modal v-model="empModal" title="Emp Info" @on-ok="okEditor" @on-cancel="cancelEditor"> <Form :label-width="80"> <FormItem label="Name:"> <Input v-model="empInfo.name" placeholder="Name..." style="width: 300px;" /> FormItem> <FormItem label="Salary:"> <Input v-model="empInfo.salary" placeholder="Salary..." style="width: 300px;" /> FormItem> <FormItem label="Age:"> <Input v-model="empInfo.age" placeholder="Age..." style="width: 300px;" /> FormItem> <FormItem label="Email:"> <Input v-model="empInfo.email" placeholder="Email..." style="width: 300px;" /> FormItem> <FormItem label="DeptName:"> <Select v-model="empInfo.deptid"> <Option v-for="(item, index) in dept" :key="index" :value="item.deptid"> {{item.deptname}} Option> Select> FormItem> Form> Modal> div> template> <script> import { getAllEmps, getEmp, deleteEmp, updateEmp, insertEmp, getDeptName } from './api/api.js' export default { data() { return { // 保存列表的总数据 total: 0, // 添加与编辑复用 modal 框,false为添加,true为编辑 createOrEditor: false, // 是否打开员工信息框 empModal: false, // 用于保存一个员工的信息 empInfo: {}, // 是否打开设置 setUp: false, // 当前页码 currentPage: 1, // 每页数据的条数 pageSize: 10, // 表格的列 tableColumns1: [{ // 分页时,若要出现自动索引,设置type = "index2",并使用 render 来返回索引值 type: 'index2', width: 80, align: 'center', render: (h, params) => { return h('span', params.index + (this.currentPage - 1) * this.pageSize + 1); } }, { title: 'Name', slot: 'name' }, { title: 'Salary', key: 'salary', sortable: true }, { title: 'Age', key: 'age', sortable: true }, { title: 'Email', key: 'email' }, { title: 'DeptName', key: 'deptName' }, { title: 'Action', slot: 'action', width: 200, align: 'center' } ], dept: [], // 表格每页的数据 data2: [], // 表格边框是否显示 showBorder: false, // 表格斑马纹是否显示 showStripe: false, // 表格头是否显示 showHeader: true, // 表格索引是否显示 showIndex: true, // 表格多选框是否显示 showCheckbox: false, // 表格滚动条是否开启 fixedHeader: false, // 改变表格大小 tableSize: 'default' } }, methods: { changePage(index) { // 改变当前的页码,并获取当前页码所拥有的数据 this.currentPage = index // 获取emps数据,分页查询 getAllEmps({ pageNum: this.currentPage, pageSize: this.pageSize }).then((res) => { if (res.data.success) { // 保存获取到的 emp 列表 this.data2 = res.data.pageInfo.list // 保存获取数据的总数 this.total = res.data.pageInfo.total } this.noticeType(res.data.level, res.data.messages) }).catch((res) => { this.noticeType() }) }, show(index) { // 弹出一个模态框,用于展示某条数据的信息 this.empInfo = Object.assign(this.empInfo, this.data2[index]) this.empModal = true this.createOrEditor = true this.empInfo = Object.assign(this.empInfo, { index: index }) }, create() { // 用于添加一条信息 this.empInfo = [] this.empModal = true this.createOrEditor = false }, remove(row, index) { this.$Modal.confirm({ title: '删除', content: '是否删除当前数据
', onOk: () => { // 删除某个员工的数据 deleteEmp({ id: row.id }).then((res) => { if (res.data.success) { this.changePage(this.currentPage) } this.noticeType(res.data.level, res.data.messages) }).catch((res) => { this.noticeType() }) }, onCancel: () => { this.$Message.info('取消删除') }, okText: 'OK', cancelText: 'Cancel' }) }, changePageSize(index) { // 改变每页显示的条数 this.$Message.info({ content: '当前页面显示条数修改为: ' + index + '条/页' }) // 改变后,跳转到首页,并刷新列表 this.pageSize = index if(this.currentPage === 1) { this.changePage(this.currentPage) return } this.currentPage = 1 }, okEditor() { if (this.createOrEditor) { // 更新某个员工的数据 const that = this updateEmp(this.empInfo).then((res) => { if (res.data.success) { this.changePage(this.currentPage) } this.noticeType(res.data.level, res.data.messages) }).catch((res) => { this.noticeType() }) } else { // 新增某个员工 this.empInfo = Object.assign({}, this.empInfo, { id: null }) insertEmp(this.empInfo).then((res) => { if (res.data.success) { this.changePage(Math.ceil((this.total + 1) / this.pageSize)) } this.noticeType(res.data.level, res.data.messages) }).catch((res) => { this.noticeType() }) } this.empInfo = {} }, cancelEditor() { // 取消编辑的操作 this.$Message.info({ content: '操作取消' }) }, noticeType(type, messages) { switch (type) { case 'info': this.$Notice.success({ title: messages.join('\n'), duration: 2 }) break case 'error': this.$Notice.error({ title: messages.join('\n'), duration: 2 }) break default: this.$Notice.error({ title: '系统异常', duration: 2 }) break } } }, watch: { showIndex(newVal) { if (newVal) { // 为true时,在首部增加一个索引列 this.tableColumns1.unshift({ // 分页时,若要出现自动索引,设置type = "index2",并使用 render 来返回索引值 type: 'index2', width: 80, align: 'center', render: (h, params) => { return h('span', params.index + (this.currentPage - 1) * this.pageSize + 1); } }) } else { // 为false时,若首部存在索引列,则移除该列 this.tableColumns1.forEach((item, index) => { if (item.type === 'index2') { this.tableColumns1.splice(index, 1) } }) } }, showCheckbox(newVal) { if (newVal) { // 为 true 时,在首部增加一多选框列, this.tableColumns1.unshift({ type: 'selection', width: 60, align: 'center' }) } else { // 为false时,若存在多选框列,则移除该列 this.tableColumns1.forEach((item, index) => { if (item.type === 'selection') { this.tableColumns1.splice(index, 1) } }) } }, empModal(newVal) { // 如果打开模态框,则触发一次获取部门信息的操作 if (newVal) { // 获取部门信息 getDeptName().then((res) => { if (res.data.success) { // 使用 Object.assign 给对象赋值时,推荐使用如下方法,创建一个新的对象。 // 若仍使用同一对象,比如this.dept = Object.assign(this.dept, res.data.departments),vue可能监控不到它的变化。 this.dept = Object.assign({}, this.dept, res.data.departments) } }).catch((res) => { this.noticeType() }) } } }, mounted() { // 页面加载时,触发第一次刷新列表的操作 this.changePage(this.currentPage) } } script> 【api.js】 import Axios from 'axios' /** * 获取emps数据,分页查询 * @param {Object} params 分页参数(pageNum当前页码, pageSize每页数据总数) */ export function getAllEmps(params) { return new Promise((resolve, reject) => { Axios.get('/emps/' + params.pageNum, { params }).then(res => { resolve(res) }).catch(res => { reject(res) }) }) } /** * 获取某个员工的数据 * @param {Object} params 参数为员工的 id */ export function getEmp(params) { return new Promise((resolve, reject) => { Axios.get('/emp/' + params.id).then(res => { resolve(res) }).catch(res => { reject(res) }) }) } /** * 删除某个员工的数据 * @param {Object} params 参数为员工的 id */ export function deleteEmp(params) { return new Promise((resolve, reject) => { Axios.delete('/emp/' + params.id).then(res => { resolve(res) }).catch(res => { reject(res) }) }) } /** * 更新某个员工的数据 * @param {Object} params 参数为员工的 id,以及员工数据 */ export function updateEmp(params) { return new Promise((resolve, reject) => { Axios.put('/emp/' + params.id, params).then(res => { resolve(res) }).catch(res => { reject(res) }) }) } /** * 新增某个员工 * @param {Object} params 参数为员工的 id,以及员工数据 */ export function insertEmp(params) { return new Promise((resolve, reject) => { Axios.post('/emp', params).then(res => { resolve(res) }).catch(res => { reject(res) }) }) } /** * 获取部门信息 * @param {Object} params */ export function getDeptName(params) { return new Promise((resolve, reject) => { Axios.get('/depts').then(res => { resolve(res) }).catch(res => { reject(res) }) }) } 【vue.config.js】 module.exports = { devServer: { proxy: { '/api': { // 此处的写法,目的是为了 将 /api 替换成 http://localhost:9000/crud target: 'http://localhost:9000/crud/', // 允许跨域 changeOrigin: true, ws: true, pathRewrite: { '^/api': '' } } } } } 【package.json】 { "name": "ssm_crud_front", "version": "0.1.0", "private": true, "scripts": { "serve": "vue-cli-service serve", "build": "vue-cli-service build", "lint": "vue-cli-service lint" }, "dependencies": { "axios": "^0.19.0", "core-js": "^3.3.2", "view-design": "^4.0.2", "vue": "^2.6.10" }, "devDependencies": { "@vue/cli-plugin-babel": "^4.0.0", "@vue/cli-plugin-eslint": "^4.0.0", "@vue/cli-service": "^4.0.0", "babel-eslint": "^10.0.3", "eslint": "^5.16.0", "eslint-plugin-vue": "^5.0.0", "vue-template-compiler": "^2.6.10" }, "eslintConfig": { "root": true, "env": { "node": true }, "extends": [ "plugin:vue/essential", "eslint:recommended" ], "rules": { "generator-star-spacing": "off", "no-tabs": "off", "no-unused-vars": "off", "no-console": "off", "no-irregular-whitespace": "off", "no-debugger": "off" }, "parserOptions": { "parser": "babel-eslint" } }, "postcss": { "plugins": { "autoprefixer": {} } }, "browserslist": [ "> 1%", "last 2 versions" ] }
九、前后端项目启动
1、前端项目启动
(1)项目地址:
https://github.com/lyh-man/ssm_crud-front.git
(2)前提:
安装 node.js(为了使用 npm)。
(3)启动:
将项目copy下来,并通过命令行进入该目录。
【Project setup】
Step1: npm install
【Compiles and hot-reloads for development】
Step2: npm run serve
【Compiles and minifies for production】
可选: npm run build
【Run your tests】
可选: npm run test
【Lints and fixes files】
可选: npm run lint
2、后端项目启动
(1)项目地址:https://github.com/lyh-man/ssm_crud-back.git
(2)使用 IDEA 打开项目,等待 maven 下载相关依赖。
(3)Step1:打开 Edit Configurations...
(4)Step2:点击 + 号,并找到 maven
(5)配置项目地址、以及端口号
(6)运行即可