SSM（spring springmvc mybatis）整合

SSM整合

项目结构

创建mybatis配置文件

config/mybatis目录下创建mybatis配置文件sqlMapConfig.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>
    <!--全局配置-->
    <settings>
        <!-- 打印日志 -->
        <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>
    <!--别名配置-->
    <typeAliases>
        <package name="com.xieli.liu.pojo"/>
    </typeAliases>
</configuration>

创建数据库信息配置文件

config目录下创建db.properties文件

#加载驱动
mysql.driver=com.mysql.jdbc.Driver
#加载数据库
mysql.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8
#用户名
mysql.user=root
#密码
mysql.password=123456

创建系统日志文件

config目录下创建log4j.properties文件

# Global logging configuration
# developer-->DEBUG product-->INFO or ERROR
#开发环境DEBUG,生产环境info或error
#log4j.rootLogger=info, stdout
log4j.rootLogger=DEBUG, stdout
#log4j.logger.org.mybatis.example.BlogMapper=TRACE
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

创建spring配置文件

config/spring目录下创建application-config.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:task="http://www.springframework.org/schema/task"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
		http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.0.xsd
		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 http://www.springframework.org/schema/aop/spring-aop.xsd">
     <!--加载数据库信息-->
    <context:property-placeholder location="classpath:config/db.properties"/>
    <bean id="dataSource"   class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="${mysql.driver}"/>
        <property name="url" value="${mysql.url}"/>
        <property name="username" value="${mysql.user}"/>
        <property name="password" value="${mysql.password}"/>
    </bean>
    <!--SqlSessionFactory加入spring-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--configLocation属性指定mybatis的核心配置文件-->
        <property name="configLocation" value="classpath:config/mybatis/sqlMapConfig.xml" />
        <!--dataSource属性指定要用到的连接池-->
        <property name="dataSource" ref="dataSource" />
    </bean>
    <!--mapper扫描器-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--适用sqlSessionFactory会使context:property-placeholder失效-->
        <!--<property name="sqlSessionFactory" ref="sqlSessionFactory"/>-->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
        <!--如果有多个包，用半角逗号隔开-->
        <property name="basePackage" value="com.xieli.liu.mapper " />
    </bean>
</beans>

导入逆向工程的文件

参考https://blog.csdn.net/weixin_45742032/article/details/103270655

创建service接口和实现类

package com.xieli.liu.service;

import com.xieli.liu.pojo.UserInfo;

import java.util.List;

/**
 * Created by Administrator on 2019-11-27.
 */
public interface UserInfoService {
    public List<UserInfo> selectUserList(UserInfo user);
}

package com.xieli.liu.service;

import com.xieli.liu.mapper.UserInfoMapper;
import com.xieli.liu.pojo.UserInfo;
import com.xieli.liu.pojo.UserInfoExample;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.List;

/**
 * Created by Administrator on 2019-11-27.
 */
public class UserInfoServiceImpl implements UserInfoService {

    @Autowired
    UserInfoMapper UserInfoMapper;

    @Override
    public List<UserInfo> selectUserList(UserInfo user) {
        UserInfoExample userInfoExample = new UserInfoExample();
        //构建查询条件
        UserInfoExample.Criteria criteria = userInfoExample.createCriteria();
        //用户名=maomao
        criteria.andUserNameEqualTo(user.getUserName());
        List<UserInfo> userInfos = UserInfoMapper.selectByExample(userInfoExample);
        return userInfos;
    }
}

创建springservice配置文件

在config/spring包下创建springService.xml,将UserInfoService加入spring中

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:task="http://www.springframework.org/schema/task"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
		http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.0.xsd
		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 http://www.springframework.org/schema/aop/spring-aop.xsd">
   <bean id="userInfoService" class="com.xieli.liu.service.UserInfoServiceImpl"/>
</beans>

创建spring事务配置文件

在config/spring包下创建spring-transaction.xml
可以引用spring配置文件中的数据源

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:task="http://www.springframework.org/schema/task"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
		http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.0.xsd
		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/tx
        http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
<!--加载数据库信息-->
    <context:property-placeholder location="classpath:config/db.properties"/>
    <bean id="dataSource"   class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="${mysql.driver}"/>
        <property name="url" value="${mysql.url}"/>
        <property name="username" value="${mysql.user}"/>
        <property name="password" value="${mysql.password}"/>
    </bean>
    <!--事务管理器：对mybatis操作数据库进行事务控制，采用springjdbc的事务控制类-->
    <bean id="dataSourceTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!-- 通知-->
    <tx:advice id="txAdvice" transaction-manager="dataSourceTransactionManager" >   <!-- 仍然使用txManager作为事务管理组件 -->
        <tx:attributes>
            <tx:method name="save*" propagation="REQUIRED"/>   <!-- 在哪些方法上添加事务管理 -->
            <tx:method name="delete*" propagation="REQUIRED"/>             <!-- 这里写方法名 -->
            <tx:method name="insert*" propagation="REQUIRED"/>           <!-- 支持通配符 -->
            <tx:method name="updata*" propagation="REQUIRED"/>
            <tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
            <tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
            <tx:method name="select*" propagation="SUPPORTS" read-only="true"/>
        </tx:attributes>
    </tx:advice>
    <!-- 通过aop机制完成事务管理 -->
    <aop:config>
        <!-- 这个expression的写法有讲究 -->
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.xieli..*Service.*(..))"/>
    </aop:config>
</beans>

创建springmvc配置文件

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

    <!-- 扫描组件 -->
    <context:component-scan base-package="com.xieli.liu.controller"/>
    <!--注解适配器和映射器-->
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter "/>
        <!-- 视图解析器-->
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"/>
</beans>

创建controller类

package com.xieli.liu.controller;

import com.xieli.liu.pojo.UserInfo;
import com.xieli.liu.service.UserInfoService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import java.util.List;

/**
 * Created by Administrator on 2019-11-27.
 */
@Controller
public class UserInfoController {

    @Autowired
    UserInfoService userInfoService;

    @RequestMapping("queryuser")
    public ModelAndView queryuserss() throws Exception {
        UserInfo userInfo = new UserInfo();
        userInfo.setUserName("小绿");
        List<UserInfo> userInfos = userInfoService.selectUserList(userInfo);
        ModelAndView mv = new ModelAndView("WEB-INF/jsp/usermasseger.jsp");
        mv.addObject("userInfo",userInfos.get(0));
        return mv;
    }
}

创建前端jsp页面

<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2019-11-23
  Time: 14:55
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>$Title$</title>
</head>
<body>
<table style="border: solid 1px">
    <tr>
        <td>
            姓名
        </td>
        <td>
            ${userInfo.userName}
        </td>
    </tr>
    <tr>
        <td>
            密码
        </td>
        <td>
            ${userInfo.userPwd}
        </td>
    </tr>
    <tr>
        <td>
            昵称
        </td>
        <td>
            ${userInfo.nickName}
        </td>
    </tr>
</table>
</body>
</html>

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_3_1.xsd"
         version="3.1">
        <!--加载spring容器-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            classpath:config/spring/*.xml
        </param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!--spring前端控制-->
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!--contextConfigLocation配置spring处理器，映射器适配器-->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:config/springmvc/spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
        <async-supported>true</async-supported>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>*.action</url-pattern>
    </servlet-mapping>
</web-app>

页面展示

访问controller的URL路经http://localhost:8080/ssm/queryuser.action