整合SSM框架 -- 简单基础SSM项目
整合SSM框架 – 第一个SSM项目
学完MyBatis、Spring、SpringMVC，做一个基于SSM框架的基础项目–书籍管理系统，要求可以实现数据的增删改查，业务运行逻辑明了，分层开发，用来巩固学习
目标：
- 配置SSM框架
- 实现基础的增删改查功能
- 具备后续方便的拓展功能
- 界面设计整洁
最终效果：
-
全部书籍页面
-
新增书籍页面
-
查询书籍页面
环境：
开发环境
环境：
- IDEA 2021.2.1
- MySQL 8
- Tomcat 9
- Maven 3.8
数据库环境
创建一个存放书籍数据的数据库表
数据库ssmbuild 书籍信息表books 主键bookID自动增长 所有字段都不能为空
CREATE
DATABASE `ssmbuild`;
USE
`ssmbuild`;
-- 创建图书表
CREATE TABLE `books`
(
`bookID` INT(10) NOT NULL AUTO_INCREMENT COMMENT '图书ID',
`bookName` VARCHAR(100) NOT NULL COMMENT '书名',
`bookCounts` INT(11) NOT NULL COMMENT '数量',
`detail` VARCHAR(200) NOT NULL COMMENT '描述',
KEY `bookID` (`bookID`)
) ENGINE = INNODB
DEFAULT CHARSET = utf8;
-- 插入数据
INSERT INTO `books`(`bookID`, `bookName`, `bookCounts`, `detail`)
VALUES (1, 'JAVA', 34, '从入门到放弃'),
(2, 'MySQL', 23, '从删库到跑路'),
(3, 'Linux', 33, '从进门到进牢')
基本环境搭建
项目结构
项目搭建
-
新建一个Maven项目 ssmbuild ， 添加JavaWeb框架的支持
-
在pom文件中导入所需依赖
<dependencies> <dependency> <groupId>junitgroupId> <artifactId>junitartifactId> <version>4.13.2version> dependency> <dependency> <groupId>mysqlgroupId> <artifactId>mysql-connector-javaartifactId> <version>8.0.26version> dependency> <dependency> <groupId>com.mchangegroupId> <artifactId>c3p0artifactId> <version>0.9.5.5version> dependency> <dependency> <groupId>javax.servletgroupId> <artifactId>servlet-apiartifactId> <version>2.5version> dependency> <dependency> <groupId>javax.servlet.jspgroupId> <artifactId>jsp-apiartifactId> <version>2.2version> dependency> <dependency> <groupId>javax.servletgroupId> <artifactId>jstlartifactId> <version>1.2version> dependency> <dependency> <groupId>org.mybatisgroupId> <artifactId>mybatisartifactId> <version>3.5.7version> dependency> <dependency> <groupId>org.mybatisgroupId> <artifactId>mybatis-springartifactId> <version>2.0.6version> dependency> <dependency> <groupId>org.springframeworkgroupId> <artifactId>spring-webmvcartifactId> <version>5.3.11version> dependency> <dependency> <groupId>org.springframeworkgroupId> <artifactId>spring-jdbcartifactId> <version>5.3.11version> dependency> <dependency> <groupId>org.aspectjgroupId> <artifactId>aspectjweaverartifactId> <version>1.9.7version> dependency> <dependency> <groupId>org.projectlombokgroupId> <artifactId>lombokartifactId> <version>1.18.22version> dependency> <dependency> <groupId>log4jgroupId> <artifactId>log4jartifactId> <version>1.2.17version> dependency> dependencies>
-
配置项目依赖
-
Maven资源过滤设置
<build> <resources> <resource> <directory>src/main/javadirectory> <includes> <include>**/*.propertiesinclude> <include>**/*.xmlinclude> includes> <filtering>falsefiltering> resource> <resource> <directory>src/main/resourcesdirectory> <includes> <include>**/*.propertiesinclude> <include>**/*.xmlinclude> includes> <filtering>falsefiltering> resource> resources> build> -
建立基本结构和配置框架
-
编写java代码
-
编写数据库对应的实体类 pojo.Books.java (注：这里使用了Lombok插件)
@Data @AllArgsConstructor @NoArgsConstructor public class Books { private int bookID; private String bookName; private int bookCounts; private String detail; } -
编写Mapper接口 mapper/BookMapper.java
public interface BookMapper { // 增加 int insertBook(Books books); // 删除 int deleteBook(@Param("bookId") int id); // 修改 int updateBook(Books books); // ID查询 Books queryBookById(int id); // 查询全部 List<Books> queryAllBook(); // 模糊查询 List<Books> queryBookName(@Param("bookName") String bookName); } -
编写Mapper接口对应的XML文件
DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.codeonce.mapper.BookMapper"> <insert id="insertBook" parameterType="Books"> INSERT INTO ssmbuild.books(bookName, bookCounts, detail) VALUES (#{bookName}, #{bookCounts}, #{detail}); insert> <delete id="deleteBook" parameterType="int"> DELETE FROM ssmbuild.books WHERE bookID = #{bookId}; delete> <update id="updateBook" parameterType="Books"> UPDATE ssmbuild.books SET bookName=#{bookName}, bookCounts=#{bookCounts}, detail=#{detail} WHERE bookID = #{bookID}; update> <select id="queryBookById" resultType="Books"> SELECT * FROM ssmbuild.books WHERE bookID = #{bookId}; select> <select id="queryAllBook" resultType="Books"> SELECT * FROM ssmbuild.books; select> <select id="queryBookName" resultType="Books"> SELECT * FROM ssmbuild.books WHERE bookName LIKE CONCAT('%', #{bookName}, '%'); select> mapper> -
编写Service层接口 service/BookService.java
public interface BookService { // 增加 int insertBook(Books books); // 删除 int deleteBook(@Param("bookId") int id); // 修改 int updateBook(Books books); // ID查询 Books queryBookById(int id); // 查询全部 List<Books> queryAllBook(); // 查询全部 List<Books> queryBookName(String bookName); } -
编写Service层接口实现类 service/BookServiceImpl.java
public class BookServiceImpl implements BookService { // 配置LOG4J private static final Logger logger = Logger.getLogger(BookServiceImpl.class); // service调用mapper层 private BookMapper bookMapper; public void setBookMapper(BookMapper bookMapper) { this.bookMapper = bookMapper; } @Override public int insertBook(Books books) { return bookMapper.insertBook(books); } @Override public int deleteBook(int id) { return bookMapper.deleteBook(id); } @Override public int updateBook(Books books) { return bookMapper.updateBook(books); } @Override public Books queryBookById(int id) { return bookMapper.queryBookById(id); } @Override public List<Books> queryAllBook() { return bookMapper.queryAllBook(); } @Override public List<Books> queryBookName(String bookName) { return bookMapper.queryBookName(bookName); } } -
编写控制层 controller/BookController.java
import com.codeonce.pojo.Books; import com.codeonce.service.BookService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; 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 java.util.List; @Controller @RequestMapping("/book") public class BookController { // controller 调用 service层 @Autowired @Qualifier("BookServiceImpl") private BookService bookService; // 查询全部的书籍,并且返回到一书籍展示的页面 @RequestMapping("/allBook") public String queryAll(Model model) { List<Books> booksList = bookService.queryAllBook(); model.addAttribute("booksList", booksList); return "allBook"; } // 跳转到增加书籍页面 @RequestMapping("/toAddBook") public String toAddBookPaper() { return "addBook"; } // 添加书籍的请求 @RequestMapping("/addBook") public String insertBook(Books books) { System.out.println("addBook=>" + books); int result = bookService.insertBook(books); if (result > 0) { System.out.println("添加数据成功" + books); } return "redirect:/book/allBook"; } // 跳转到修改书籍页面 @RequestMapping("/toUpdateBook/{bookID}") public String toUpdateBookPaper(@PathVariable("bookID") int id, Model model) { Books books = bookService.queryBookById(id); model.addAttribute("books", books); return "updateBook"; } // 修改书籍请求 @RequestMapping("/updateBook") public String updateBook(Books books) { System.out.println("updateBook=>" + books); int result = bookService.updateBook(books); if (result > 0) { System.out.println("修改数据成功" + books); } return "redirect:/book/allBook"; } // 删除书籍请求 @RequestMapping("/deleteBook/{bookID}") public String deleteBook(@PathVariable("bookID") int id) { int result = bookService.deleteBook(id); if (result > 0) { System.out.println("删除数据成功" + id); } return "redirect:/book/allBook"; } // 查询书籍 @RequestMapping("/queryBook") public String queryBook(String bookName, Model model) { // bookName = "%" + bookName + "%"; List<Books> booksList = bookService.queryBookName(bookName); System.err.println("queryBook" + booksList); model.addAttribute("booksList", booksList); return "allBook"; } }
-
-
配置文件
-
数据库参数配置文件 resources/database.properties
jdbc.driver=com.mysql.cj.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai jdbc.username=root jdbc.password=admin -
LOG4J日志配置文件 resources/log4j.properties
# 将等级为DEBUG的日志信息输出到console和file这两个目的地，console和file的定义在下面的代码 log4j.rootLogger=DEBUG,console,file # 控制台输出的相关设置 log4j.appender.console=org.apache.log4j.ConsoleAppender log4j.appender.console.Target=System.out log4j.appender.console.Threshold=DEBUG log4j.appender.console.layout=org.apache.log4j.PatternLayout log4j.appender.console.layout.ConversionPattern=[%c]-%m%n log4j.appender.Console.encoding=UTF-8 # 文件输出的相关设置 log4j.appender.file=org.apache.log4j.RollingFileAppender log4j.appender.file.File=./log/com.mydemo.log log4j.appender.file.MaxFileSize=10mb log4j.appender.file.Threshold=DEBUG log4j.appender.file.layout=org.apache.log4j.PatternLayout log4j.appender.file.layout.ConversionPattern=[%p][%d{yyyy-MM-dd}][%c]%m%n log4j.appender.file.encoding=UTF-8 # 日志输出级别 log4j.logger.org.mybatis=DEBUG log4j.logger.java.sql=DEBUG log4j.logger.java.sql.Statement=DEBUG log4j.logger.java.sql.ResultSet=DEBUG log4j.logger.java.sql.PreparedStatement=DEBUG -
写dao层操作配置文件 resources/spring-dao.xml
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd"> <context:property-placeholder location="classpath:database.properties"/> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${jdbc.driver}"/> <property name="jdbcUrl" value="${jdbc.url}"/> <property name="user" value="${jdbc.username}"/> <property name="password" value="${jdbc.password}"/> <property name="maxPoolSize" value="30"/> <property name="minPoolSize" value="10"/> <property name="autoCommitOnClose" value="false"/> <property name="checkoutTimeout" value="10000"/> <property name="acquireRetryAttempts" value="2"/> bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="configLocation" value="classpath:mybatis-config.xml"/> bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> <property name="basePackage" value="com.codeonce.mapper"/> bean> beans> -
写service层操作配置文件 resources/spring-service.xml
<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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" 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/aop https://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <context:component-scan base-package="com.codeonce.service"/> <bean id="BookServiceImpl" class="com.codeonce.service.BookServiceImpl"> <property name="bookMapper" ref="bookMapper"/> 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="*" propagation="REQUIRED"/> tx:attributes> tx:advice> <aop:config> <aop:pointcut id="txPointCut" expression="execution(* com.codeonce.mapper.*.*(..))"/> <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"/> aop:config> beans> -
写MVC操作配置文件 resources/spring-mvc.xml
<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 https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd"> <mvc:annotation-driven/> <mvc:default-servlet-handler/> <context:component-scan base-package="com.codeonce.controller"/> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="viewResolver"> <property name="prefix" value="/WEB-INF/jsp/"/> <property name="suffix" value=".jsp"/> bean> beans> -
mybatis框架配置 resources/mybatis-config.xml
DOCTYPE configuration PUBLIC "-//mybatis.ory//DTD Config 3.0//EN" "htpp://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <settings> <setting name="logImpl" value="STDOUT_LOGGING"/> settings> <typeAliases> <typeAlias type="com.codeonce.pojo.Books" alias="Books"/> typeAliases> <mappers> <mapper class="com.codeonce.mapper.BookMapper"/> mappers> configuration> -
导入所有配置文件 resources/applicationContext.xml
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns="http://www.springframework.org/schema/beans" xsi:schemaLocation="http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd"> <context:annotation-config/> <import resource="classpath:spring-dao.xml"/> <import resource="classpath:spring-service.xml"/> <import resource="classpath:spring-mvc.xml"/> beans> -
在web.xml 中绑定配置 web/WEB-INF/web.xml
<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_4_0.xsd" version="4.0"> <servlet> <servlet-name>DispatcherServletservlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class> <init-param> <param-name>contextConfigLocationparam-name> <param-value>classpath:applicationContext.xmlparam-value> init-param> <load-on-startup>1load-on-startup> servlet> <servlet-mapping> <servlet-name>DispatcherServletservlet-name> <url-pattern>/url-pattern> servlet-mapping> <filter> <filter-name>encodingFilterfilter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class> <init-param> <param-name>encodingparam-name> <param-value>utf-8param-value> init-param> filter> <filter-mapping> <filter-name>encodingFilterfilter-name> <url-pattern>/*url-pattern> filter-mapping> <session-config> <session-timeout>15session-timeout> session-config> web-app>
-
-
JSP页面
-
-
index.jsp 跳转页面 web/index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>跳转页面 点击进入列表页
-
书籍列表JSP web/WEB-INF/jsp/allBook.jsp （集成查询所有和模糊查询）
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %>书籍列表 -
新增书籍页面 web/WEB-INF/jsp/addBook.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %>新增书籍 新增书籍
-
更新书籍JSP页面 web/WEB-INF/jsp/updateBook.jsp （此处可以使用新增书籍页面复用）
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %>修改书籍 修改书籍
总结
- 代码还有很多地方可以改进 比如页面代码复用 方法复用 动态SQL
- 后续进行项目拓展都可以基于需求进行增加mapper接口
-