SSM（Spring+SpringMVC+MyBatis）整合+CRUD【IDEA版】

1.导入数据库

• 以下数据与实际不符，仅用于测试

drop database if exists ssm;

create database ssm;

use ssm; 

##创建图书表
create table t_book(
    `id` int(11) primary key auto_increment,    ## 主键
    `name` varchar(50) not null,                ## 书名 
    `author` varchar(50) not null,              ## 作者
    `price` decimal(11,2) not null,             ## 价格
    `sales` int(11) not null,                   ## 销量
    `stock` int(11)                             ## 库存
);

## 插入初始化测试数据
insert into t_book(`id` , `name` , `author` , `price` , `sales` , `stock`) 
values(null , '平凡的世界' , '路遥' , 80 , 9999 , 9 );

insert into t_book(`id` , `name` , `author` , `price` , `sales` , `stock`) 
values(null , '如何阅读一本书' , '莫提默·J. 艾德勒' , 78.5 , 6 , 13 );

insert into t_book(`id` , `name` , `author` , `price` , `sales` , `stock`) 
values(null , '月亮与六便士' , '毛姆' , 68, 99999 , 52 );

insert into t_book(`id` , `name` , `author` , `price` , `sales` , `stock`) 
values(null , '白夜行' , '东野圭吾' , 16, 1000 , 50 );

insert into t_book(`id` , `name` , `author` , `price` , `sales` , `stock`) 
values(null , 'Java编程思想' , '埃克尔' , 45.5 , 14 , 95 );

insert into t_book(`id` , `name` , `author` , `price` , `sales` , `stock`) 
values(null , '三体' , '刘慈欣' , 9.9, 12 , 53 );
 
insert into t_book(`id` , `name` , `author` , `price` , `sales` , `stock`) 
values(null , '龙族' , '江南' , 66.5, 125 , 535 );

insert into t_book(`id` , `name` , `author` , `price` , `sales` , `stock`) 
values(null , '简爱' , '夏洛蒂·勃朗特' , 99.5 , 47 , 36 );

insert into t_book(`id` , `name` , `author` , `price` , `sales` , `stock`) 
values(null , '大话设计模式' , '吴强' , 89.15 , 20 , 10 );
 
insert into t_book(`id` , `name` , `author` , `price` , `sales` , `stock`) 
values(null , '人月神话' , '布鲁克斯' , 88.15 , 20 , 80 ); 

## 查看表内容
select id,name,author,price,sales,stock from t_book;

2.创建web项目

3.导入相关jar包

（1）在web项目的web-inf目录下，创建libs文件夹，用于存放jar包

（2）将jar包添加到项目中

4.将项目部署到 tomcat

• 启动tomcat，进行测试

• 如果启动不成功时，可以build一下，重新构建模块

5.使用MBG，生成相关的mybatis代码

（1）MBG配置文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
        PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
        "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>

    <context id="DB2Tables" targetRuntime="MyBatis3">
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/ssm"
                        userId="root"
                        password="admin">
        </jdbcConnection>

        <javaTypeResolver >
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <javaModelGenerator targetPackage="fun.jiayou.pojo" targetProject=".src">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>

        <sqlMapGenerator targetPackage="fun.jiayou.mapper"  targetProject=".src">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>

        <javaClientGenerator type="XMLMAPPER" targetPackage="fun.jiayou.mapper"  targetProject=".src">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>

        <table tableName="t_book" domainObjectName="Book" ></table>

    </context>
</generatorConfiguration>

（2）生成类

public class Create {
    public static void main(String[] args) throws Exception {
        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        File configFile = new File("./src/mbg-config.xml");
        ConfigurationParser cp = new ConfigurationParser(warnings);
        Configuration config = cp.parseConfiguration(configFile);
        DefaultShellCallback callback = new DefaultShellCallback(overwrite);
        MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
        myBatisGenerator.generate(null);
    }
}

（3）添加log.properties配置文件

log4j.rootLogger=DEBUG, stdout

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%c{1} - %m%n

log4j.logger.java.sql.PreparedStatement=DEBUG

（4）编译Create类

（5）生成完成

6.整合mybatis+spring

（1）创建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>

    <settings>
        <!-- 打开延迟加载的开关 -->
        <setting name="lazyLoadingEnabled" value="true" />
        <!-- 将积极加载改为消极加载  按需加载 -->
        <setting name="aggressiveLazyLoading" value="false"/>
        <!--    开启自动驼峰命名规则，将数据库字段名a_column映射为javabean的aColumn -->
        <setting name="mapUnderscoreToCamelCase" value="true"/>
        <!--        开启二级缓存-->
        <setting name="cacheEnabled" value="true"/>
    </settings>

    <!--添加分页插件-->
    <plugins>
        <plugin interceptor="com.github.pagehelper.PageInterceptor"></plugin>
    </plugins>

</configuration>

（2）创建spring-config.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:mybatis="http://mybatis.org/schema/mybatis-spring" 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 https://www.springframework.org/schema/context/spring-context.xsd http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">

    <!--开启注解扫描-->
    <context:component-scan base-package="fun.jiayou">
        <!--排除扫描controller-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!--引入数据库文件-->
    <context:property-placeholder location="classpath:jdbc.properties" />
    <!--由spring容器来管理Druid数据源-->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="username" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
        <property name="url" value="${jdbc.url}"></property>
        <!--注意此处不是driver，而是driverClassName-->
        <property name="driverClassName" value="${jdbc.driver}"></property>
    </bean>

    <!--spring整合mybatis-->
    <bean class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--引入数据源-->
        <property name="dataSource" ref="dataSource"></property>
        <!--引入mybatis-config.xml-->
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
        <!--引入映射文件BookMapper.xml-->
        <property name="mapperLocations" value="classpath:fun/jiayou/mapper/*.xml"></property>
        <!--实体类全限定名（注册包的地址）-->
        <property name="typeAliasesPackage" value="fun.jiayou.pojo"></property>
    </bean>
    <!--创建代理对象-->
    <mybatis:scan base-package="fun.jiayou.mapper"></mybatis:scan>

    <!--事务管理-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!--注册事务注解驱动-->
    <tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>

</beans>

7.整合springmvc

（1）创建springmvc-config.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 https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <context:component-scan base-package="fun.jiayou">
        <!--指定扫描controller-->
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <!--配置视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
    <!--配置默认处理器和注解处理器：分别用于处理控制器方法请求和静态资源请求-->
    <mvc:default-servlet-handler></mvc:default-servlet-handler>
    <mvc:annotation-driven></mvc:annotation-driven>

</beans>

8.web.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
          http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
           version="2.5">

    <!--配置filter：解决编码问题-->
    <filter>
        <filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!--配置spring容器，tomcat启动时，创建spring容器-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-config.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!--配置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:springmvc-config.xml</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

</web-app>

9.创建Controller和service层

（1）controller

package fun.jiayou.controller;

import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import fun.jiayou.pojo.Book;
import fun.jiayou.service.impl.BookServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import java.util.List;
import java.util.Map;

/**
 * @author BaiYun
 * @create 2020-09-04-14:20
 */
@Controller
public class BookController {

    @Autowired
    BookServiceImpl bookServiceImpl;

    @RequestMapping(value = "queryAllBook")
    public String queryAllBook(
            @RequestParam(value = "pageNum",required = false, defaultValue = "1") Integer pageNum,
            @RequestParam(value = "pageSize",required = false, defaultValue = "2") Integer pageSize,
            Map<String,Object> maps
    ) {
        PageHelper.startPage(pageNum, pageSize);
        List<Book> books = bookServiceImpl.queryAllBook();
        PageInfo<Book> pageInfo = new PageInfo<>(books,3);
        maps.put("pageInfo", pageInfo);
        return "bookList";
    }

    @RequestMapping(value = "delBookById")
    public String delBookById(Integer id) {
        bookServiceImpl.delBook(id);
        return "redirect:/queryAllBook";
    }

    @RequestMapping(value = "forwards")
    public String forwards() {
        return "bookEdit";
    }

    @RequestMapping(value = "addBook")
    public String addBook(Book book) {
        bookServiceImpl.addBook(book);
        return "redirect:/queryAllBook";
    }
    @RequestMapping(value = "queryBookById")
    public String queryBookById(Map<String,Object> maps,Integer id) {
        Book book = bookServiceImpl.queryBookById(id);
        maps.put("book", book);
        return "bookEdit";
    }

    @RequestMapping(value = "editBook")
    public String editBook(Book book) {
        bookServiceImpl.editBook(book);
        return "redirect:/queryAllBook";
    }
}

（2）service

package fun.jiayou.service.impl;

import fun.jiayou.mapper.BookMapper;
import fun.jiayou.pojo.Book;
import fun.jiayou.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * @author BaiYun
 * @create 2020-09-04-14:23
 */
@Service
public class BookServiceImpl implements BookService {
    @Autowired
    BookMapper bookMapper;

    @Override
    public List<Book> queryAllBook() {
        List<Book> books = bookMapper.selectByExample(null);
        return books;
    }

    @Override
    public Book queryBookById(Integer id) {
        Book book = bookMapper.selectByPrimaryKey(id);
        return book;
    }

    @Override
    public void addBook(Book book) {
        bookMapper.insertSelective(book);
    }

    @Override
    public void delBook(Integer id) {
        bookMapper.deleteByPrimaryKey(id);
    }

    @Override
    public void editBook(Book book) {
        bookMapper.updateByPrimaryKeySelective(book);
    }
}

10.创建JSP页面

（1）bookList.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>图书信息列表</title>
</head>
<body>
    <center>
        <h2>图书信息列表</h2>
        <div style=" 800px;text-align: right">
            <a href="${pageContext.request.contextPath}/forwards">添加图书</a>
        </div>
        <div>
            <table style="border-collapse: collapse;text-align: center;"  width="800px"  border="1">
                <tr bgcolor="#FF8888">
                    <td>书名</td>
                    <td>作者</td>
                    <td>价格</td>
                    <td>销量</td>
                    <td>库存</td>
                    <td>操作</td>
                </tr>

                <c:forEach items="${requestScope.pageInfo.list}" var="book">
                    <tr>
                        <td>${book.name}</td>
                        <td>${book.author}</td>
                        <td>${book.price}</td>
                        <td>${book.sales}</td>
                        <td>${book.stock}</td>
                        <td>
                            <a href="${pageContext.request.contextPath}/delBookById?id=${book.id}">删除</a>  &nbsp;|&nbsp;
                            <a href="${pageContext.request.contextPath}/queryBookById?id=${book.id}">修改</a>
                        </td>
                    </tr>
                </c:forEach>
            </table>
            <div>
                <a href="${pageContext.request.contextPath}/queryAllBook?pageNum=1">首页</a>
                <c:if test="${pageInfo.isFirstPage}">
                    <a href="${pageContext.request.contextPath}/queryAllBook?pageNum=1">上一页</a>
                </c:if>
                <c:if test="${not pageInfo.isFirstPage}">
                    <a href="${pageContext.request.contextPath}/queryAllBook?pageNum=${pageInfo.pageNum-1}">上一页</a>
                </c:if>

                <c:forEach items="${pageInfo.navigatepageNums}" var="i" >
                    <c:if test="${pageInfo.pageNum==i}">
                        &nbsp;<a style="color: red;" href="${pageContext.request.contextPath}/queryAllBook?pageNum=${i}">${i}</a>&nbsp;
                    </c:if>
                    <c:if test="${pageInfo.pageNum != i}">
                        &nbsp;<a href="${pageContext.request.contextPath}/queryAllBook?pageNum${i}">${i}</a>&nbsp;
                    </c:if>
                </c:forEach>

                <c:if test="${pageInfo.isLastPage}">
                    <a href="${pageContext.request.contextPath}/queryAllBook?pageNum=${pageInfo.pages}">下一页</a>
                </c:if>
                <c:if test="${not pageInfo.isLastPage}">
                    <a href="${pageContext.request.contextPath}/queryAllBook?pageNum=${pageInfo.pageNum+1}">下一页</a>
                </c:if>
                <a href="${pageContext.request.contextPath}/queryAllBook?pageNum=${pageInfo.pages}">尾页</a>
            </div>
        </div>
    </center>
</body>
</html>

 （2）bookEdit.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html >
<head>
    <title>图书编辑</title>
</head>
<body>
    <center>
        <form action="${pageContext.request.contextPath}/${empty book.id?'addBook':'editBook'}" method="post">
            <input type="hidden" name="id" value="${book.id}">
            书名：<input type="text" name="name" value="${requestScope.book.name}"><br>
            作者：<input type="text" name="author" value="${requestScope.book.author}"><br>
            价格：<input type="text" name="price" value="${requestScope.book.price}"><br>
            销量：<input type="text" name="sales" value="${requestScope.book.sales}"><br>
            库存：<input type="text" name="stock" value="${requestScope.book.stock}"><br>
            <input type="submit" value="提交">
        </form>
    </center>
</body>
</html>

11.最终效果

（1）tomcat启动情况

（2）CRUD效果

（3）代码打包

链接：https://pan.baidu.com/s/1JjUUnlmdg6o4DdrSIVgvKQ 
提取码：mjxw

　　ps：如有不足之处，请指出。我们共同进步。