SpringMVC——SSM整合

1、环境要求:

  • IDEA
  • MySQL 5.1.19
  • Tomcat 9
  • Maven 3.6.1

2、数据库环境搭建

创建一个存放书籍的数据库表

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');

2、基本环境搭建

  1. 首先看一下基本结构

  2. 新建一个Maven项目ssmbuild,添加web的支持!

  3. 导入pom.xml依赖

     <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>3.5.2</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>2.0.2</version>
            </dependency>
    
            <!--Spring-->
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-webmvc</artifactId>
                <version>5.1.9.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-jdbc</artifactId>
                <version>5.1.9.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>1.18.12</version>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>1.18.12</version>
            </dependency>
        </dependencies>
    
    
  4. pom.xml添加资源过滤设置

     <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>
    
  5. 建立基本结构和配置框架

    • com.jjh.pojo

    • com.jjh.dao

    • com.jjh.service

    • com.jjh.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
              http://www.springframework.org/schema/beans/spring-beans.xsd">
      
      </beans>
      

3、Mybatis层编写

  1. 编写数据库配置文件database.properties

    jdbc.driver=com.mysql.jdbc.Driver
    jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8
    jdbc.username=root
    jdbc.password=123456
    
  2. IDEA关联数据库配置

  3. 编写Mybatis的核心配置文件

    <?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>
    
        <typeAliases>
            <package name="com.jjh.pojo"/>
        </typeAliases>
        <mappers>
            <mapper resource="com/jjh/dao/BookMapper.xml"/>
        </mappers>
    </configuration>
    
  4. 编写数据库的实体类com.jiang.pojo.Books(使用lombok插件)

    package com.jjh.pojo;
    
    import lombok.AllArgsConstructor;
    import lombok.Data;
    import lombok.NoArgsConstructor;
    
    @Data
    @AllArgsConstructor
    @NoArgsConstructor
    public class Books {
        private int bookID;
        private String bookName;
        private int bookCounts;
        private String detail;
    
    }
    
    
  5. 编写Dao层的接口BookMapper

    package com.jjh.dao;
    
    import com.jjh.pojo.Books;
    
    import java.util.List;
    
    public interface BookMapper {
        //增加一个Book
        int addBook(Books book);
    
        //根据id删除一个Book
        int deleteBookById(int id);
    
        //更新Book
        int updateBook(Books books);
    
        //根据id查询,返回一个Book
        Books queryBookById(int id);
    
        //查询全部Book,返回list集合
        List<Books> queryAllBook();
    }
    
    
  6. 编写接口对应的BookMapper.xml文件,需要导入MyBatis的包

    <?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.jjh.dao.BookMapper">
    
        <!--增加一个Book-->
        <insert id="addBook" parameterType="Books">
            insert into ssmbuild.books(bookName,bookCounts,detail)
            values (#{bookName}, #{bookCounts}, #{detail})
        </insert>
    
        <!--根据id删除一个Book-->
        <delete id="deleteBookById" parameterType="int">
            delete from ssmbuild.books where bookID=#{bookID}
        </delete>
    
        <!--更新Book-->
        <update id="updateBook" parameterType="Books">
            update ssmbuild.books
            set bookName = #{bookName},bookCounts = #{bookCounts},detail = #{detail}
            where bookID = #{bookID}
        </update>
    
        <!--根据id查询,返回一个Book-->
        <select id="queryBookById" resultType="Books">
            select * from ssmbuild.books
            where bookID = #{bookID}
        </select>
    
        <!--查询全部Book-->
        <select id="queryAllBook" resultType="Books">
            SELECT * from ssmbuild.books
        </select>
    
    </mapper>
    
  7. 编写Service层的接口和实现类

    • 接口:BookService

      package com.jjh.service;
      
      
      import com.jjh.pojo.Books;
      
      import java.util.List;
      
      //BookService:底下需要去实现,调用dao层
      public interface BookService {
          //增加一个Book
          int addBook(Books book);
          //根据id删除一个Book
          int deleteBookById(int id);
          //更新Book
          int updateBook(Books books);
          //根据id查询,返回一个Book
          Books queryBookById(int id);
          //查询全部Book,返回list集合
          List<Books> queryAllBook();
      }
      
    • 实现类:BookServiceImpl

      package com.jjh.service;
      
      import com.jjh.dao.BookMapper;
      import com.jjh.pojo.Books;
      
      import java.util.List;
      
      public class BookServiceImpl implements BookService {
      
          //调用dao层的操作,设置一个set接口,方便Spring管理
          private BookMapper bookMapper;
      
          public void setBookMapper(BookMapper bookMapper) {
              this.bookMapper = bookMapper;
          }
      
          public int addBook(Books book) {
              return bookMapper.addBook(book);
          }
      
          public int deleteBookById(int id) {
              return bookMapper.deleteBookById(id);
          }
      
          public int updateBook(Books books) {
              return bookMapper.updateBook(books);
          }
      
          public Books queryBookById(int id) {
              return bookMapper.queryBookById(id);
          }
      
          public List<Books> queryAllBook() {
              return bookMapper.queryAllBook();
          }
      }
      

到这一步,底层需求编写完成!

4、Spring层编写

resources目录下建一个spring包里面放Spring相关的配置文件:s

  • 编写Spring整合Mybatis相关的配置文件,我们这里使用c3p0连接池
    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
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    https://www.springframework.org/schema/context/spring-context.xsd">
    
        <!-- 配置整合mybatis -->
        <!-- 1.关联数据库文件 -->
        <context:property-placeholder location="classpath:database.properties"/>
    
        <!-- 2.数据库连接池 -->
        <!--数据库连接池
    dbcp  半自动化操作  不能自动连接
    c3p0  自动化操作(自动的加载配置文件 并且设置到对象里面)
        -->
        <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
            <!-- 配置连接池属性 -->
            <property name="driverClass" value="${jdbc.driver}"/>
            <property name="jdbcUrl" value="${jdbc.url}"/>
            <property name="user" value="${jdbc.username}"/>
            <property name="password" value="${jdbc.password}"/>
    
            <!-- c3p0连接池的私有属性 -->
            <property name="maxPoolSize" value="30"/>
            <property name="minPoolSize" value="10"/>
            <!-- 关闭连接后不自动commit -->
            <property name="autoCommitOnClose" value="false"/>
            <!-- 获取连接超时时间 -->
            <property name="checkoutTimeout" value="10000"/>
            <!-- 当获取连接失败重试次数 -->
            <property name="acquireRetryAttempts" value="2"/>
        </bean>
    
        <!-- 3.配置SqlSessionFactory对象 -->
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            <!-- 注入数据库连接池 -->
            <property name="dataSource" ref="dataSource"/>
            <!-- 配置MyBaties全局配置文件:mybatis-config.xml -->
            <property name="configLocation" value="classpath:mybatis-config.xml"/>
        </bean>
    
        <!-- 4.配置扫描Dao接口包,动态实现Dao接口注入到spring容器中 -->
        <!--解释 : https://www.cnblogs.com/jpfss/p/7799806.html-->
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            <!-- 注入sqlSessionFactory -->
            <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
            <!-- 给出需要扫描Dao接口包 -->
            <property name="basePackage" value="com.jjh.dao"/>
        </bean>
    
    </beans>
    
  • Spring整合Service层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"
           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">
    
        <!-- 扫描service相关的bean -->
        <context:component-scan base-package="com.jjh.service" />
    
        <!--BookServiceImpl注入到IOC容器中-->
        <bean id="BookServiceImpl" class="com.jjh.service.BookServiceImpl">
            <property name="bookMapper" ref="bookMapper"/>
        </bean>
    
        <!-- 配置事务管理器 -->
        <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <!-- 注入数据库连接池 -->
            <property name="dataSource" ref="dataSource" />
        </bean>
    
    </beans>
    

5、Spring层编写

  1. web.xml编写(固定写法)

    <?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>DispatcherServlet</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>DispatcherServlet</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>
    
        <!--encodingFilter-->
        <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过期时间-->
        <session-config>
            <session-timeout>15</session-timeout>
        </session-config>
    </web-app>
    
  2. spring文件下建立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
        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
        https://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
        <!-- 配置SpringMVC -->
        <!-- 1.开启SpringMVC注解驱动 -->
        <mvc:annotation-driven />
        <!-- 2.静态资源默认servlet配置-->
        <mvc:default-servlet-handler/>
    
        <!-- 3.配置jsp 显示ViewResolver视图解析器 -->
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
            <property name="prefix" value="/WEB-INF/jsp/"/>
            <property name="suffix" value=".jsp"/>
        </bean>
    
        <!-- 4.扫描web相关的bean -->
        <context:component-scan base-package="com.jjh.controller" />
    
    </beans>
    

配置文件结束!

5、Controller层和视图层编写

  1. BookController类编写: 方法一:添加书籍

    package com.jjh.controller;
    
    import com.jjh.pojo.Books;
    import com.jjh.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 {
    
        @Autowired
        @Qualifier("BookServiceImpl")
        private BookService bookService;
    
        @RequestMapping("/allBook")
        public String list(Model model) {
            List<Books> list = bookService.queryAllBook();
            model.addAttribute("list", list);
            return "allBook";
        }
    
  2. 编写首页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">点击进入列表页</a>
    </h3>
    </body>
    </html>
    
  3. WEB-INF/jsp/下创建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, initial-scale=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/toAddBook">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/toUpdateBook?id=${book.getBookID()}">更改</a> |
                                <a href="${pageContext.request.contextPath}/book/del/${book.getBookID()}">删除</a>
                            </td>
                        </tr>
                    </c:forEach>
                    </tbody>
                </table>
            </div>
        </div>
    </div>
    
  4. BookController 类编写 : 方法二:添加书籍

     @RequestMapping("/toAddBook")
        public String toAddPaper() {
            return "addBook";
        }
    
        @RequestMapping("/addBook")
        public String addPaper(Books books) {
            System.out.println(books);
            bookService.addBook(books);
            return "redirect:/book/allBook";
        }
    
  5. 添加书籍页面: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, initial-scale=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">
            书籍名称:<input type="text" name="bookName"><br><br><br>
            书籍数量:<input type="text" name="bookCounts"><br><br><br>
            书籍详情:<input type="text" name="detail"><br><br><br>
            <input type="submit" value="添加">
        </form>
    
    </div>
    
  6. BookController 类编写: 方法三:修改书籍

     @RequestMapping("/toUpdateBook")
        public String toUpdateBook(Model model, int id) {
            Books books = bookService.queryBookById(id);
            System.out.println(books);
            model.addAttribute("book",books );
            return "updateBook";
        }
    
        @RequestMapping("/updateBook")
        public String updateBook(Model model, Books book) {
            System.out.println(book);
            bookService.updateBook(book);
            Books books = bookService.queryBookById(book.getBookID());
            model.addAttribute("books", books);
            return "redirect:/book/allBook";
        }
    
  7. 编写书籍页面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>修改信息</title>
        <meta name="viewport" content="width=device-width, initial-scale=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>修改信息</small>
                    </h1>
                </div>
            </div>
        </div>
    
        <form action="${pageContext.request.contextPath}/book/updateBook" method="post">
            <input type="hidden" name="bookID" value="${book.getBookID()}"/>
            书籍名称:<input type="text" name="bookName" value="${book.getBookName()}"/>
            书籍数量:<input type="text" name="bookCounts" value="${book.getBookCounts()}"/>
            书籍详情:<input type="text" name="detail" value="${book.getDetail() }"/>
            <input type="submit" value="提交"/>
        </form>
    
    </div>
    
  8. BookController 类编写 :方法四:删除书籍

    @RequestMapping("/del/{bookId}")
        public String deleteBook(@PathVariable("bookId") int id) {
            bookService.deleteBookById(id);
            return "redirect:/book/allBook";
        }
    

6、运行

  1. 配置Tomcat

  2. 一定要创建一个lib把我们的jar包倒入进去

  3. 测试!

    • 数据列表

    • 新增书籍

    • 更新信息

7、添加业务流程

posted @ 2020-02-27 21:20  Godlesss  阅读(...)  评论(...编辑  收藏