整合SSM

一、环境要求：

• IDEA
• MySQL 5.7.26
• Tomcat 9
• Maven 3.6

二、数据库环境：

CREATE DATABASE `ssmbuild`;

USE `ssmbuild`;

CREATE TABLE `books`(
	`bookID` INT(10) NOT NULL AUTO_INCREMENT COMMENT ‘书名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‘);

三、基本环境搭建：

1. 新建一个maven项目ssmbuild，添加web的支持。

2. 导入相关的依赖

   <!--依赖:junit,数据库驱动，连接池，servlet，jsp，mybatis，mybatis-spring，spring-->
       <dependencies>
           <!--Junit-->
           <dependency>
               <groupId>junit</groupId>
               <artifactId>junit</artifactId>
               <version>4.12</version>
           </dependency>
           <!--数据库驱动-->
           <dependency>
               <groupId>mysql</groupId>
               <artifactId>mysql-connector-java</artifactId>
               <version>5.1.47</version>
           </dependency>
           <!--数据库连接池-->
           <dependency>
               <groupId>com.mchange</groupId>
               <artifactId>c3p0</artifactId>
               <version>0.9.5.2</version>
           </dependency>
   
           <!--servlet jsp-->
           <dependency>
               <groupId>javax.servlet</groupId>
               <artifactId>servlet-api</artifactId>
               <version>2.5</version>
           </dependency>
           <dependency>
               <groupId>javax.servlet.jsp</groupId>
               <artifactId>jsp-api</artifactId>
               <version>2.2</version>
           </dependency>
           <dependency>
               <groupId>javax.servlet</groupId>
               <artifactId>jstl</artifactId>
               <version>1.2</version>
           </dependency>
   
           <!--mybatis-->
           <dependency>
               <groupId>org.mybatis</groupId>
               <artifactId>mybatis</artifactId>
               <version>3.5.4</version>
           </dependency>
           <dependency>
               <groupId>org.mybatis</groupId>
               <artifactId>mybatis-spring</artifactId>
               <version>2.0.3</version>
           </dependency>
   
           <!--spring-->
           <dependency>
               <groupId>org.springframework</groupId>
               <artifactId>spring-webmvc</artifactId>
               <version>5.2.2.RELEASE</version>
           </dependency>
           <dependency>
               <groupId>org.springframework</groupId>
               <artifactId>spring-jdbc</artifactId>
               <version>5.2.2.RELEASE</version>
           </dependency>
   
           <!--lombok插件-->
           <dependency>
               <groupId>org.projectlombok</groupId>
               <artifactId>lombok</artifactId>
               <version>1.18.10</version>
           </dependency>
       </dependencies>
   

3. Maven资源过滤设置

   	<!--静态资源导出问题-->
       <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>
   

4. 建立基本结构和配置框架

   • com.kwanghuee.pojo

   • com.kwanghuee.dao

   • com.kwanghuee.service

   • com.kwanghuee.controller

   • 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>
     
     </configuration>
     

   • applicationContext.xml

     <?xml version="1.0" encoding="UTF-8"?>
     <beans xmlns="http://www.springframework.org/schema/beans"
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xsi:schemaLocation="http://www.springframework.org/schema/beans
             https://www.springframework.org/schema/beans/spring-beans.xsd">
         
     </beans>
     

四、MyBatis层编写：

1. 数据库配置文件 databasee.properties

   jdbc.driver=com.mysql.jdbc.Driver
   # 如果使用mysql8.0+ 增加一个时区的配置 &serverTimezone=Asia/Shanghai
   jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&Unicode=true&characterEncoding=utf8
   jdbc.username=root
   jdbc.password=0516
   

2. 编写MyBatis核心配置文件

   <?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核心配置文件-->
   <configuration>
   
       <!--配置数据源，交给spring去做-->
   
       <!--别名-->
       <typeAliases>
           <package name="com.kwanghuee.pojo"/>
       </typeAliases>
   
   </configuration>
   

3. 编写数据库对应的实体类com.kwanghuee.pojo.Books

   package com.kwanghuee.pojo;
   
   import lombok.AllArgsConstructor;
   import lombok.Data;
   import lombok.NoArgsConstructor;
   
   /**
    * @author: kwanghuee
    * @date: 2020/4/13 15:52
    */
   @Data
   @AllArgsConstructor
   @NoArgsConstructor
   public class Books {
   
       private int bookID;
       private String bookName;
       private int bookCounts;
       private String detail;
   }
   

4. 编写dao层的Mapper接口

   package com.kwanghuee.dao;
   
   import com.kwanghuee.pojo.Books;
   import org.apache.ibatis.annotations.Param;
   
   import java.util.List;
   
   
   /**
    * @author: kwanghuee
    * @date: 2020/4/13 16:08
    */
   public interface BookMapper {
   
       //增加一本书
       int addBook(Books book);
   
       //删除一本书
       int deleteBook(@Param("bookid") int id);
   
       //更新一本书
       int updateBook(Books book);
   
       //查询一本书
       Books queryBookById(@Param("bookid") int id);
   
       //查询全部的书
       List<Books> queryAllBooks();
   }
   

5. 编写接口对应的Mapper.xml文件

   <?xml version="1.0" encoding="UTF-8" ?>
   <!DOCTYPE mapper
           PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
           "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
   
   <mapper namespace="com.kwanghuee.dao.BookMapper">
       <insert id="addBook" parameterType="Books">
           insert into books (bookName,bookCounts,detail)
           values (#{bookName},#{bookCounts},#{detail});
       </insert>
       
       <delete id="deleteBook" parameterType="int">
           delete from books where bookID=#{bookid};
       </delete>
       
       <update id="updateBook" parameterType="Books">
           update books
           set bookName=#{bookName},bookCounts=#{bookCounts},detail=#{detail}
           where bookID=#{bookID};
       </update>
   
       <select id="queryBookById" resultType="Books">
           select * from books where bookID=#{bookid};
       </select>
       
       <select id="queryAllBooks" resultType="Books">
           select * from books;
       </select>
   
       <select id="queryBookByName" resultType="Books">
           select * from books where bookName=#{bookName};
       </select>
   </mapper>
   

6. 编写service层接口和实现类

   接口：

   package com.kwanghuee.service;
   
   import com.kwanghuee.pojo.Books;
   import org.apache.ibatis.annotations.Param;
   
   import java.util.List;
   
   /**
    * @author: kwanghuee
    * @date: 2020/4/13 16:21
    */
   public interface BookService {
   
       //增加一本书
       int addBook(Books book);
   
       //删除一本书
       int deleteBook(int id);
   
       //更新一本书
       int updateBook(Books book);
   
       //查询一本书
       Books queryBookById(int id);
   
       //查询全部的书
       List<Books> queryAllBooks();
   }
   

   实现类：

   package com.kwanghuee.service;
   
   import com.kwanghuee.dao.BookMapper;
   import com.kwanghuee.pojo.Books;
   
   import java.util.List;
   
   /**
    * @author: kwanghuee
    * @date: 2020/4/13 16:22
    */
   public class BookServiceImpl implements BookService {
   
       //service层调dao层
       private BookMapper bookMapper;
       public void setBookMapper(BookMapper bookMapper) {
           this.bookMapper = bookMapper;
       }
   
       public int addBook(Books book) {
           return bookMapper.addBook(book);
       }
   
       public int deleteBook(int id) {
           return bookMapper.deleteBook(id);
       }
   
       public int updateBook(Books book) {
           return bookMapper.updateBook(book);
       }
   
       public Books queryBookById(int id) {
           return bookMapper.queryBookById(id);
       }
   
       public List<Books> queryAllBooks() {
           return bookMapper.queryAllBooks();
       }
   }
   

五、Spring层：

1. 编写Spring整合MyBaits的配置文件：spring-dao.xml

   <?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"
          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">
   
       <!--1.关联数据库配置文件-->
       <context:property-placeholder location="classpath:database.properties"/>
   
       <!--2.连接池
           dbcp: 半自动化操作，不能自动连接
           c3p0: 自动化操作（自动加载配置文件，并且可以自动设置到对象中）
       -->
       <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}"/>
       </bean>
   
       <!--3.sqlSessionFactory-->
       <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
           <property name="dataSource" ref="dataSource"/>
           <!--绑定mybatis的配置文件-->
           <property name="configLocation" value="classpath:mybatis-config.xml"/>
       </bean>
   
       <!--4.配置dao接口扫描包，动态的实现了dao接口可以注入到spring容器中-->
       <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
           <!--注入sqlSessionFactory-->
           <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
           <!--要扫描的dao包-->
           <property name="basePackage" value="com.kwanghuee.dao"/>
   
       </bean>
   
   </beans>
   

2. Spring整合service层

   <?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"
          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">
   
       <!--1.扫描service下的包-->
       <context:component-scan base-package="com.kwanghuee.service"/>
   
       <!--2.将我们所有的业务类，注入到Spring中，通过配置或注解实现-->
       <bean id="BookServiceImpl" class="com.kwanghuee.service.BookServiceImpl">
           <property name="bookMapper" ref="bookMapper"/>
       </bean>
   
       <!--3.配置声明式事务-->
       <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
           <!--注入数据源-->
           <property name="dataSource" ref="dataSource"/>
       </bean>
   
       <!--4.aop事务支持-->
   
   </beans>
   

六、SpringMVC层：

1. 配置web.xml

   <?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_4_0.xsd"
            version="4.0">
   
       <!--DispatcherServlet-->
       <servlet>
           <servlet-name>springmvc</servlet-name>
           <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
           <init-param>
               <param-name>contextConfigLocation</param-name>
               <param-value>classpath:applicationContext.xml</param-value>
           </init-param>
           <load-on-startup>1</load-on-startup>
       </servlet>
       <servlet-mapping>
           <servlet-name>springmvc</servlet-name>
           <url-pattern>/</url-pattern>    
       </servlet-mapping>
   
       <!--乱码过滤-->
       <filter>
           <filter-name>encodingFilter</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>encodingFilter</filter-name>
           <url-pattern>/*</url-pattern>
       </filter-mapping>
   
       <!--session-->
       <session-config>
           <session-timeout>15</session-timeout>
       </session-config>
   
   </web-app>
   

2. 在web/WEB-INF/下创建一个文件夹jsp

3. 编写SpringMVC配置文件Spring-mvc.xml

   <?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
           https://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">
   
       <!--1.注解驱动-->
       <mvc:annotation-driven/>
       <!--2.静态资源过滤-->
       <mvc:default-servlet-handler/>
       <!--3.扫描包：controller-->
       <context:component-scan base-package="com.kwanghuee.controller"/>
       <!--4.视图解析器-->
       <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="internalResourceViewResolver">
           <property name="prefix" value="/WEB-INF/jsp/"/>
           <property name="suffix" value=".jsp"/>
       </bean>
   </beans>
   

4. 配置applicationContext.xml

   <?xml version="1.0" encoding="UTF-8"?>
   <beans xmlns="http://www.springframework.org/schema/beans"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://www.springframework.org/schema/beans
           https://www.springframework.org/schema/beans/spring-beans.xsd">
   
       <import resource="classpath:spring-dao.xml"/>
       <import resource="classpath:spring-service.xml"/>
       <import resource="classpath:spring-mvc.xml"/>
   
   </beans>
   

5. 使用快捷键 Ctrl + Shift + Alt + S 打开 Project Structure

七、controller层和视图层

1. BookController类编写，方法一：查询全部书籍

   package com.kwanghuee.controller;
   
   import com.kwanghuee.pojo.Books;
   import com.kwanghuee.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;
   
   /**
    * @author: kwanghuee
    * @date: 2020/4/13 17:14
    */
   @Controller
   @RequestMapping("/book")
   public class BookController {
   
       @Autowired
       @Qualifier("BookServiceImpl")
       private BookService bookService;
   
       //查询全部的书籍，并返回到一个书籍展示页面
       @RequestMapping("/allBook")
       public String list(Model model) {
           List<Books> booksList = bookService.queryAllBooks();
           model.addAttribute("list",booksList);
           return "allBook";
       }
   
   }
   

2. 编写首页index.jsp

   <%@ page contentType="text/html;charset=UTF-8" language="java" %>
   <html>
   <head>
     <title>首页</title>
   
     <style>
       a{
         text-decoration: none;
         color: black;
         font-size: 18px;
       }
       h3 {
         width: 180px;
         height: 38px;
         margin: 100px auto;
         text-align: center;
         line-height: 38px;
         background: mediumpurple;
         border-radius: 5px;
       }
     </style>
   </head>
   <body>
   
   <h3>
     <a href="${pageContext.request.contextPath}book/allBook">进入书籍页面</a>
   </h3>
   
   </body>
   </html>
   

3. 书籍列表页面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>书籍展示</title>
   
       <link href="https://cdn.staticfile.org/twitter-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 class="row">
               <div class="col-md-4 column">
                   <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增书籍</a>
               </div>
               <div class="col-md-4 column"></div>
               <div class="col-md-4 column">
                   <%--查询书籍--%>
                   <form action="${pageContext.request.contextPath}/book/queryBook" method="post" class="form-inline">
                       <input type="text" name="queryBookName" class="form-control" placeholder="请输入要查询的书籍名称">
                       <button type="submit" class="btn btn-default">查询</button>
                   </form>
               </div>
           </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>书籍名称</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="${list}">
                       <tr>
                           <td>${book.bookID}</td>
                           <td>${book.bookName}</td>
                           <td>${book.bookCounts}</td>
                           <td>${book.detail}</td>
                           <td>
                               <a href="${pageContext.request.contextPath}/book/toUpdate?id=${book.bookID}">修改</a>
                               &nbsp; | &nbsp;
                               <a href="${pageContext.request.contextPath}/book/deleteBook/${book.bookID}">删除</a>
                           </td>
                       </tr>
                   </c:forEach>
                   </tbody>
               </table>
   
           </div>
       </div>
   
   </div>
   
   </body>
   </html>
   

4. BookController类编写，方法二：添加书籍

   	//跳转到增加书籍页面
       @RequestMapping("/toAddBook")
       public String toAddPaper(){
           return "addBook";
       }
   
       //添加书籍
       @RequestMapping("/addBook")
       public String addBook(Books books){
           System.out.println("addBook=>"+books);
           bookService.addBook(books);
           return "redirect:/book/allBook";//重定向到 @RequestMapping("/allBook")
       }
   

5. 添加书籍页面addBook.jsp

   <%@ page contentType="text/html;charset=UTF-8" language="java" %>
   <html>
   <head>
       <title>Title</title>
       <link href="https://cdn.staticfile.org/twitter-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>书籍名称：</label>
               <input type="text" name="bookName" class="form-control" required>
           </div>
           <div class="form-group">
               <label>书籍数量：</label>
               <input type="text" name="bookCounts" class="form-control" required>
           </div>
           <div class="form-group">
               <label>书籍描述：</label>
               <input type="text" name="detail" class="form-control" required>
           </div>
   
           <button type="submit" class="btn btn-default">添加</button>
       </form>
   </div>
   
   </body>
   </html>
   

6. BookController类编写，方法三：修改书籍

   //跳转到修改书籍页面
       @RequestMapping("/toUpdate")
       public String toUpdatePaper(int id,Model model){
           Books books = bookService.queryBookById(id);
           model.addAttribute("QBook",books);
           return "updateBook";
       }
   
       //修改书籍
       @RequestMapping("/updateBook")
       public String updateBook(Books books){
           System.out.println("updateBook=>"+books);
           bookService.updateBook(books);
           return "redirect:/book/allBook";
       }
   

7. 修改书籍页面updateBook.jsp

   <%@ page contentType="text/html;charset=UTF-8" language="java" %>
   <html>
   <head>
       <title>Title</title>
       <link href="https://cdn.staticfile.org/twitter-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="${pageContext.request.contextPath}/book/updateBook" method="post">
           <input type="hidden" name="bookID" value="${QBook.bookID}">
           <div class="form-group">
               <label>书籍名称：</label>
               <input type="text" name="bookName" class="form-control" required value="${QBook.bookName}">
           </div>
           <div class="form-group">
               <label>书籍数量：</label>
               <input type="text" name="bookCounts" class="form-control" required value="${QBook.bookCounts}">
           </div>
           <div class="form-group">
               <label>书籍描述：</label>
               <input type="text" name="detail" class="form-control" required value="${QBook.detail}">
           </div>
   
           <button type="submit" class="btn btn-default">确定</button>
       </form>
   </div>
   
   </body>
   </html>
   

8. BookController类编写，方法四：删除书籍

   	//删除书籍 restful
       @RequestMapping("/deleteBook/{bookId}")
       public String deleteBook(@PathVariable("bookId") int id){
           bookService.deleteBook(id);
           return "redirect:/book/allBook";
       }
   

   ok，配置Tomcat运行

项目结构

整合SSM

原文：https://www.cnblogs.com/kwanghuee/p/13754267.html