听说企业中ssm运用的很多,而且,近期感觉项目中运用的表关联相当多,运用mybatis感觉会更加方便和灵活,所以准备开始ssm的学习。
初步计划
后台:spring4.1.6+spring mvc4.1.6+mybatis3.2.8+mybatis-spring1.2.2
前台:dojo1.10.4
通过maven来管理jar包
主要采用rest风格。
应广大网友的要求,这里贴出源码,方便网友测试:我是源代码
补充一下:源代码里的pom.xml里面缺少了一个jar包,需要补充一下
<dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.6.10</version> </dependency>
201507181134最新修正:修改json相关信息,解决json报406的错误
pom.xml里面添加以下jar包即可
<jackson.version>2.2.3</jackson.version> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>${jackson.version}</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>${jackson.version}</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>${jackson.version}</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.module</groupId> <artifactId>jackson-module-jaxb-annotations</artifactId> <version>${jackson.version}</version> </dependency>
20150725修正:重大的bug,不过找到了总比没找打强。
在spring.xml中缺少一项配置,导致mybatis.xml文件没有起作用,具体是缺少configLocation属性。今天把这个错误修正,这个框架一定会越来越完善,越来越好!
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="configLocation" value="classpath:mybatis.xml"/> <property name="dataSource" ref="myC3P0DataSource"></property> <property name="mapperLocations" value="classpath:com/aodong/mybatisTest/mapper/*.xml"/> <property name="typeAliasesPackage" value="com.aodong.mybatisTest.model"></property> </bean>
----------------------------分割线,我们开始吧-----------------------------------
首先,项目截图:
sql文件:
-- ---------------------------- -- Table structure for student -- ---------------------------- DROP TABLE IF EXISTS `student`; CREATE TABLE `student` ( `id` bigint(20) NOT NULL AUTO_INCREMENT, `age` int(11) DEFAULT NULL, `name` varchar(32) DEFAULT NULL, `niceName` varchar(255) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=14 DEFAULT CHARSET=utf8; -- ---------------------------- -- Records of student -- ---------------------------- INSERT INTO `student` VALUES ('1', '1', '11', '111'); INSERT INTO `student` VALUES ('13', '111', 'haha', 'haha');
web.xml文件:
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1"> <display-name>mavenChapter1</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <!-- 创建spring监听器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- spring的监听器可以通过这个上下文参数来获取applicationContext.xml的位置 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value> classpath:spring.xml </param-value> </context-param> <servlet> <servlet-name>spring-mvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>spring-mvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <filter> <filter-name>CharacterFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>
<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>4.0.0</modelVersion> <groupId>mavenChapter2</groupId> <artifactId>mavenChapter2</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <name>mavenChapter2</name> <description/> <properties> <!-- spring版本号 --> <spring.version>4.1.6.RELEASE</spring.version> <!-- mybatis版本号 --> <mybatis.version>3.2.8</mybatis.version> <!-- log4j日志文件管理包版本 --> <slf4j.version>1.7.7</slf4j.version> <log4j.version>1.2.17</log4j.version> <jackson.version>2.2.3</jackson.version> </properties> <dependencies> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.6.10</version> </dependency> <dependency> <groupId>javax</groupId> <artifactId>javaee-api</artifactId> <version>7.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.glassfish.web</groupId> <artifactId>javax.servlet.jsp.jstl</artifactId> <version>1.2.2</version> </dependency> <dependency> <groupId>c3p0</groupId> <artifactId>c3p0</artifactId> <version>0.9.1.2</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <!-- 表示开发的时候引入,发布的时候不会加载此包 --> <scope>test</scope> </dependency> <!-- spring核心包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.1.6.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-oxm</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <!-- mybatis核心包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <!-- mybatis/spring包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.2.2</version> </dependency> <!-- 导入Mysql数据库链接jar包 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.30</version> </dependency> <!-- JSTL标签类 --> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- 日志文件管理包 --> <!-- log start --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</version> </dependency> <!-- 格式化对象,方便输出日志 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.1.41</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>${slf4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>${slf4j.version}</version> </dependency> <!-- log end --> <!-- 映入JSON --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>${jackson.version}</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>${jackson.version}</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>${jackson.version}</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.module</groupId> <artifactId>jackson-module-jaxb-annotations</artifactId> <version>${jackson.version}</version> </dependency> <!-- 上传组件包 --> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.4</version> </dependency> <dependency> <groupId>commons-codec</groupId> <artifactId>commons-codec</artifactId> <version>1.9</version> </dependency> </dependencies> </project>
datasource.type=mysql datasource.driverClassName=com.mysql.jdbc.Driver datasource.url=jdbc\:mysql\://127.0.0.1\:3306/shtest?useUnicode\=true&characterEncoding\=UTF-8 datasource.username=root datasource.password=root hibernate.dialect=org.hibernate.dialect.MySQLDialect #datasource.type=oracle #datasource.driverClassName=oracle.jdbc.driver.OracleDriver #datasource.url=jdbc\:oracle\:thin\:@192.168.1.88\:1521\:juice?useUnicode\=true&characterEncoding\=utf-8 #datasource.username=root #datasource.password=root #hibernate.dialect=org.hibernate.dialect.Oracle10gDialect datasource.maxActive=100 datasource.initialSize=5 datasource.maxIdle=20 datasource.maxWait=120000 datasource.whenExhaustedAction=1 #datasource.validationQuery=select 1 from dual datasource.testOnBorrow=true datasource.testOnReturn=false c3p0.acquireIncrement=3 c3p0.initialPoolSize=3 c3p0.idleConnectionTestPeriod=60 c3p0.minPoolSize=2 c3p0.maxPoolSize=50 c3p0.maxStatements=100 c3p0.numHelperThreads=10 c3p0.maxIdleTime=600 c3p0.testConnectionOnCheckout=false c3p0.preferredTestQuery=select 1 from dual
log4j.properties文件:
log4j.rootCategory=INFO, stdout , R log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=[springTest] %p [%t] %C.%M(%L) | %m%n log4j.appender.R=org.apache.log4j.DailyRollingFileAppender log4j.appender.R.File=d\:logsshTest.log log4j.appender.R.layout=org.apache.log4j.PatternLayout log4j.appender.R.layout.ConversionPattern=%d-[TS] %p %t %c - %m%n
<?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> --> <!-- 这个配置使全局的映射器启用或禁用缓存 --> <!-- <setting name="cacheEnabled" value="true" /> --> <!-- 全局启用或禁用延迟加载。当禁用时,所有关联对象都会即时加载 --> <!-- <setting name="lazyLoadingEnabled" value="true" /> --> <!-- 当启用时,有延迟加载属性的对象在被调用时将会完全加载任意属性。否则,每种属性将会按需要加载 --> <!-- <setting name="aggressiveLazyLoading" value="true" /> --> <!-- 允许或不允许多种结果集从一个单独的语句中返回(需要适合的驱动) --> <!-- <setting name="multipleResultSetsEnabled" value="true" /> --> <!-- 使用列标签代替列名。不同的驱动在这方便表现不同。参考驱动文档或充分测试两种方法来决定所使用的驱动 --> <!-- <setting name="useColumnLabel" value="true" /> --> <!-- 允许JDBC支持生成的键。需要适合的驱动。如果设置为true则这个设置强制生成的键被使用,尽管一些驱动拒绝兼容但仍然有效(比如Derby) --> <!-- <setting name="useGeneratedKeys" value="true" /> --> <!-- 指定MyBatis如何自动映射列到字段/属性。PARTIAL只会自动映射简单,没有嵌套的结果。FULL会自动映射任意复杂的结果(嵌套的或其他情况) --> <!-- <setting name="autoMappingBehavior" value="PARTIAL" /> --> <!-- 配置默认的执行器。SIMPLE执行器没有什么特别之处。REUSE执行器重用预处理语句。BATCH执行器重用语句和批量更新 --> <!-- <setting name="defaultExecutorType" value="SIMPLE" /> --> <!-- 设置超时时间,它决定驱动等待一个数据库响应的时间 --> <!-- <setting name="defaultStatementTimeout" value="25000" /> --> <!-- </settings> --> <!-- 设置别名 --> <!-- <typeAliases> <typeAlias alias="User" type="com.adon.model.User" /> </typeAliases> --> </configuration>
<?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:p="http://www.springframework.org/schema/p" 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-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/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd" > <!-- Spring为我们提供了一种极为方便注册这些BeanPostProcessor的方式, 即使用<context:annotation- config/>隐式地向 Spring容器注册 AutowiredAnnotationBeanPostProcessor、 RequiredAnnotationBeanPostProcessor、 CommonAnnotationBeanPostProcessor以及 PersistenceAnnotationBeanPostProcessor这4个BeanPostProcessor --> <context:annotation-config /> <!-- <mvc:annotation-driven /> 是一种简写形式, 会自动注册DefaultAnnotationHandlerMapping与 AnnotationMethodHandlerAdapter 两个bean, 是spring MVC为@Controllers分发请求所必须的 --> <mvc:annotation-driven /> <!--使Spring支持自动检测组件,如注解的Controller --> <context:component-scan base-package="com.aodong.mybatisTest.controller" /> <!-- 将静态文件指定到某个特殊的文件夹中统一处理 --> <mvc:resources location="/resources/" mapping="/resources/**"/> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/" /> <property name="suffix" value=".jsp" /> </bean> </beans>
<?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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:jee="http://www.springframework.org/schema/jee" xsi:schemaLocation=" http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-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/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/jee http://www.springframework.org/schema/jee/spring-jee-4.0.xsd"> <!-- 启用spring注解支持 --> <context:annotation-config /> <context:component-scan base-package="com.aodong.mybatisTest" /> <!-- 加载jdbc.properties文件,用于下边的数据库配置 --> <context:property-placeholder location="classpath:jdbc.properties"/> <!-- 配置c3p0连接池 开始--> <bean id="myC3P0DataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${datasource.driverClassName}"></property> <property name="jdbcUrl" value="${datasource.url}"></property> <property name="user" value="${datasource.username}"></property> <property name="password" value="${datasource.password}"></property> <property name="acquireIncrement" value="${c3p0.acquireIncrement}"></property> <property name="initialPoolSize" value="${c3p0.initialPoolSize}"></property> <property name="maxIdleTime" value="${c3p0.maxIdleTime}"></property> <property name="maxPoolSize" value="${c3p0.maxPoolSize}"></property> <property name="minPoolSize" value="${c3p0.minPoolSize}"></property> <property name="idleConnectionTestPeriod" value="${c3p0.idleConnectionTestPeriod}"></property> <property name="maxStatements" value="${c3p0.maxStatements}"></property> <property name="numHelperThreads" value="${c3p0.numHelperThreads}"></property> <property name="testConnectionOnCheckout" value="${c3p0.testConnectionOnCheckout}"></property> <property name="preferredTestQuery" value="${c3p0.preferredTestQuery}"></property> <property name="acquireRetryDelay" value="1000"></property> <property name="acquireRetryAttempts" value="60"></property> <property name="breakAfterAcquireFailure" value="false"></property> </bean> <!-- 配置c3p0连接池 结束--> <!--创建sqlSessionFactory 开始 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="myC3P0DataSource"></property> <property name="mapperLocations" value="classpath:com/aodong/mybatisTest/mapper/*.xml"/> <property name="typeAliasesPackage" value="com.aodong.mybatisTest.model"></property> </bean> <!--创建sqlSessionFactory 结束 --> <!-- 扫描sql映射文件 开始--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.aodong.mybatisTest.dao"></property> </bean> <!-- 扫描sql映射文件 结束--> <!-- 配置事务管理器 开始 --> <bean id="txmanager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="myC3P0DataSource"></property> </bean> <!-- 配置事务管理器 结束 --> <!--基本事务定义,使用transactionManager作事务管理,默认get*,find*方法的事务为read-only--> <tx:advice id="txAdvice" transaction-manager="txmanager"> <tx:attributes> <tx:method name="find*" read-only="true" /> <tx:method name="get*" read-only="true" /> <tx:method name="update*" propagation="REQUIRED" /> <tx:method name="delete*" propagation="REQUIRED" /> <tx:method name="save*" propagation="REQUIRED" /> <tx:method name="*" propagation="REQUIRED" /> </tx:attributes> </tx:advice> <!-- 以AspectJ方式 定义AOP 第一个*代表所有的返回值类型 第二个*代表所有的类 第三个*代表类所有方法 最后一个..代表所有的参数。 --> <aop:config> <aop:pointcut id="interceptorPointCuts" expression="execution(* com.aodong.mybatisTest.service.*Impl.*(..))" /> <aop:advisor advice-ref="txAdvice" pointcut-ref="interceptorPointCuts" /> </aop:config> </beans>
package com.aodong.mybatisTest.model; import java.io.Serializable; public class Student implements Serializable { private long id; private int age; private String name; private String niceName; public Student() { } public Student(long id, int age, String name, String niceName) { super(); this.id = id; this.age = age; this.name = name; this.niceName = niceName; } public long getId() { return id; } public void setId(long id) { this.id = id; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getNiceName() { return niceName; } public void setNiceName(String niceName) { this.niceName = niceName; } @Override public String toString() { return "Student [id=" + id + ", age=" + age + ", name=" + name + ", niceName=" + niceName + "]"; } }
package com.aodong.mybatisTest.dao; import java.util.List; import com.aodong.mybatisTest.model.Student; public interface StudentMapper { public int add(Student stu); public int update(Student stu); public int delete(long id); public Student getStu(long id); public List<Student> getStuAll(); }
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.aodong.mybatisTest.dao.StudentMapper"> <select id="getStu" parameterType="long" resultType="Student"> select * from student where id=#{id} </select> <insert id="add" parameterType="Student"> insert into Student (age, name, niceName) values (#{age}, #{name}, #{niceName}) </insert> <update id="update" parameterType="Student"> update Student set age=#{age}, name=#{name}, niceName=#{niceName} where id=#{id} </update> <delete id="delete" parameterType="long"> delete from Student where id=#{id} </delete> <select id="getStuAll" resultType="Student"> select * from Student; </select> </mapper>
package com.aodong.mybatisTest.service; import com.aodong.mybatisTest.model.Student; public interface StudentService { public Student getStu(long id); public void saveStu(Student stu); public void updateStu(Student stu); public void deleteStu(long id); public List<Student> getStuAll(); }
package com.aodong.mybatisTest.service.impl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.aodong.mybatisTest.dao.StudentMapper; import com.aodong.mybatisTest.model.Student; import com.aodong.mybatisTest.service.StudentService; @Service("studentService") public class StudentServiceImpl implements StudentService { @Autowired private StudentMapper studentMapper; public Student getStu(long id) { return studentMapper.getStu(id); } public void saveStu(Student stu) { studentMapper.add(stu); } public void updateStu(Student stu) { studentMapper.update(stu); } public void deleteStu(long id) { studentMapper.delete(id); } public List<Student> getStuAll() { return studentMapper.getStuAll(); } }
package com.aodong.mybatisTest.controller; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import com.aodong.mybatisTest.model.Student; import com.aodong.mybatisTest.service.StudentService; @Controller @RequestMapping("/student") public class StudentController { @Autowired private StudentService studentService; @RequestMapping(value="/{userid}/show", method=RequestMethod.GET) public String show(@PathVariable long userid, Model model){ Student stu = studentService.getStu(userid); System.out.println(stu); model.addAttribute("student", studentService.getStu(userid)); return "student/show"; } }