SpringMVC-03-SSM整合
七、SSM整合
7.1 环境配置
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IDE：IDEA
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数据库：MySQL 8.0.21
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JDK14 + maven 3.6.3
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maven依赖
<dependencies> <!--JUnit--> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <scope>test</scope> </dependency> <!--Spring框架--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>5.3.1</version> </dependency> <!--lombok--> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.18.16</version> <scope>provided</scope> </dependency> <!--MySQL--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.22</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>5.3.1</version> </dependency> <!--MyBatis--> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.5.6</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>2.0.6</version> </dependency> <!--Servlet--> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>4.0.1</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jsp-api</artifactId> <version>2.0</version> </dependency> </dependencies> -
设置maven静态资源过滤
<build> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> </resources> </build>
7.2 数据库搭建
CREATE DATABASE `ssmbuild`;
USE `ssmbuild`;
DROP TABLE IF EXISTS `books`;
CREATE TABLE `books` (
`bookID` INT(10) NOT NULL AUTO_INCREMENT COMMENT '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
INSERT INTO `books`(`bookID`,`bookName`,`bookCounts`,`detail`)VALUES
(1,'Java',1,'从入门到放弃'),
(2,'MySQL',10,'从删库到跑路'),
(3,'Linux',5,'从进门到进牢');
7.3 系统架构设计
- pojo：实体类包
- mapper：MyBatis操作数据库接口，和pojo一起组成了Model
- controller：Controller层
- service：服务层
7.4 MyBatis
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mysql配置文件
driver=com.mysql.cj.jdbc.Driver url=jdbc:mysql://localhost:3306/mybatis?useSSL=true&useUnicode=true&characterEncoding=utf8&serverTimezone=GMT+8 user=root pwd=123456 -
mybatis-config
<typeAliases> <package name="com.pbx.pojo"/> </typeAliases> <mappers> <package name="com.pbx.mapper"/> </mappers> -
spring整合MyBatis
<!--扫描配置文件--> <context:property-placeholder location="classpath:mysql.properties"/> <!--配置数据源--> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="${driver}"/> <property name="url" value="${url}"/> <property name="username" value="${user}"/> <property name="password" value="${pwd}"/> </bean> <!--配置SQLSessionFactory--> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="configLocation" value="mybatis-config.xml"/> </bean> <!--自动扫描mapper接口，生成实体类，交由Spring管理--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> <property name="basePackage" value="com.pbx.mapper"/> </bean> -
实体类
@Data @AllArgsConstructor @NoArgsConstructor public class Book { private int bookID; private String bookName; private int bookCount; private String detail; } -
mapper接口
public interface BookMapper { // 增 int addBook(Book book); // 删 int deleteBookByID(@Param("bookid") int id); // 改 int updateBook(Book book); // 查 List<Book> selectAllBook(); List<Book> selectBookByName(@Param("bookname") String name); Book selectBookByID(@Param("bookid") int id); } -
mapper.xml
<mapper namespace="com.pbx.mapper.BookMapper"> <insert id="addBook" parameterType="book"> insert into ssmbuild.books (bookName, bookCounts, detail) value (#{bookName}, #{bookCounts}, #{detail}) </insert> <update id="updateBook" parameterType="book"> update ssmbuild.books <set> <if test="bookName != null">bookName = #{bookName}</if> <if test="bookCounts != null">bookCounts = #{bookCounts}</if> <if test="detail != null">detail = #{detail}</if> </set> where bookID = #{bookID}; </update> <delete id="deleteBookByID" parameterType="int"> delete from ssmbuild.books where bookID = #{bookid}; </delete> <select id="selectAllBook" resultType="book"> select * from ssmbuild.books; </select> <select id="selectBookByName" resultType="book"> select * from ssmbuild.books where bookName like '%'#{bookname}'%'; </select> <select id="selectBookByID" resultType="com.pbx.pojo.Book"> select * from ssmbuild.books where bookID = #{bookid}; </select> </mapper>
7.5 Service层
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service接口
public interface BookService { // 增 int addBook(Book book); // 删 int deleteBookByID(int id); // 改 int updateBook(Book book); // 查 List<Book> selectAllBook(); List<Book> selectBookByName(String name); Book selectBookByID(int id); } -
service实现类
public class BookServiceImpl implements BookService { private BookMapper mapper; public void setMapper(BookMapper mapper) { this.mapper = mapper; } @Override public int addBook(Book book) { return mapper.addBook(book); } @Override public int deleteBookByID(int id) { return mapper.deleteBookByID(id); } @Override public int updateBook(Book book) { return mapper.updateBook(book); } @Override public List<Book> selectAllBook() { return mapper.selectAllBook(); } @Override public List<Book> selectBookByName(String name) { return mapper.selectBookByName(name); } @Override public Book selectBookByID(int id) { return mapper.selectBookByID(id); } } -
spring整合service
<!--给Service注入mapper--> <bean id="bookServiceImpl" class="com.pbx.service.BookServiceImpl"> <property name="mapper" ref="bookMapper"/> </bean> <!--开启事务管理--> <bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> </bean>
7.6 View层 + Controller层
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首页，index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %> <!DOCTYPE HTML> <html> <head> <title>首页</title> <style type="text/css"> a { text-decoration: none; color: black; font-size: 18px; } h3 { width: 180px; height: 38px; margin: 100px auto; text-align: center; line-height: 38px; background: deepskyblue; border-radius: 4px; } </style> </head> <body> <h3> <a href="${pageContext.request.contextPath}/book/allBook">点击进入详情页</a> </h3> </body> </html> -
allBook.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>书籍列表</title> <meta name="viewport" content="width=device-width, initialscale= 1.0"> <!-- 引入 Bootstrap --> <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"> </head> <body> <div class="container"> <div class="row clearfix"> <div class="col-md-12 column"> <div class="page-header"><h1> <small>书籍列表 —— 显示所有书籍</small> </h1> </div> </div> </div> <div class="row"> <div class="col-md-4 column"> <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAdd">新增</a> </div> </div> <div class="row clearfix"> <div class="col-md-12 column"> <table class="table table-hover table-striped"> <thead> <tr> <th>书籍编号</th> <th>书籍名字</th> <th>书籍数量</th> <th>书籍详情</th> <th>操作</th> </tr> </thead> <tbody> <c:forEach var="book" items="${requestScope.get('list')}"> <tr> <td>${book.getBookID()}</td> <td>${book.getBookName()}</td> <td>${book.getBookCounts()}</td> <td>${book.getDetail()}</td> <td> <a href="${pageContext.request.contextPath}/book/toUpdate/${book.getBookID()}">更改</a> | <a href="${pageContext.request.contextPath}/book/delete/${book.getBookID()}">删除</a> </td> </tr> </c:forEach> </tbody> </table> </div> </div> </div> -
addBook.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>新增书籍</title> <meta name="viewport" content="width=device-width, initialscale=1.0"> <!-- 引入 Bootstrap --> <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"> </head> <body> <div class="container"> <div class="row clearfix"> <div class="col-md-12 column"> <div class="page-header"> <h1> <small>新增书籍</small> </h1> </div> </div> </div> <form action="${pageContext.request.contextPath}/book/addBook" method="post"> <div class="form-group"> <label for="bookname">书籍名称</label> <input type="text" class="form-control" name="bookName" id="bookname" required> </div> <div class="form-group"> <label for="bookcount">书籍数量</label> <input type="text" class="form-control" name="bookCounts" id="bookcount" required> </div> <div class="form-group"> <label for="detail">书籍详情</label> <input type="text" class="form-control" name="detail" id="detail" required> </div> <div class="form-group"> <input type="submit" class="form-control" value="提交"> </div> </form> </div> -
updateBook.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>新增书籍</title> <meta name="viewport" content="width=device-width, initialscale=1.0"> <!-- 引入 Bootstrap --> <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"> </head> <body> <div class="container"> <div class="row clearfix"> <div class="col-md-12 column"> <div class="page-header"> <h1> <small>修改书籍</small> </h1> </div> </div> </div> <form action="${pageContext.request.contextPath}/book/updateBook/${oldBook.bookID}" method="post"> <div class="form-group"> <label for="bookname">新书籍名称</label> <input type="text" class="form-control" name="bookName" id="bookname" value="${oldBook.bookName}"> </div> <div class="form-group"> <label for="bookcount">书籍数量</label> <input type="text" class="form-control" name="bookCounts" id="bookcount" value="${oldBook.bookCounts}"> </div> <div class="form-group"> <label for="detail">书籍详情</label> <input type="text" class="form-control" name="detail" id="detail" value="${oldBook.detail}"> </div> <div class="form-group"> <input type="submit" class="form-control" value="提交"> </div> </form> </div> -
Controller
@Controller @RequestMapping("/book") public class BookController { @Autowired @Qualifier("bookServiceImpl") private BookService service; @RequestMapping("/allBook") public String getAllBook(Model model) { model.addAttribute("list", service.selectAllBook()); return "allBook"; } @RequestMapping("/toAdd") public String toAddPaper() { return "addBook"; } @RequestMapping("/addBook") public String addBook(Book book) { System.out.println(book); service.addBook(book); return "redirect:allBook"; } @RequestMapping("/delete/{id}") public String deleteBook(@PathVariable String id) { service.deleteBookByID(Integer.parseInt(id)); return "redirect:/book/allBook"; } @RequestMapping("/toUpdate/{id}") public String toUpdate(@PathVariable int id, Model model) { model.addAttribute("oldBook", service.selectBookByID(id)); return "updateBook"; } @RequestMapping("/updateBook/{id}") public String updateBook(@PathVariable int id, Book book) { book.setBookID(id); service.updateBook(book); return "redirect:/book/allBook"; } }
