SSM整合 (SpringMVC+Spring+MyBatis)

其他 2018-09-01 18:11:16 阅读次数: 0

SSM 是什么？

web 层解决方案

SpringMVC

service解决方案

Spring

dao层解决方案

MyBatis

开发项目流程

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dao —> service —> web

首先进行项目结构的构建

第一步：进行MyBatis项目的构建

pom.xml

<?xml version="1.0" encoding="UTF-8"?>


<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd">

<modelVersion>4.0.0</modelVersion>


<groupId>com.ma</groupId>

<artifactId>ssm</artifactId>

<version>1.0-SNAPSHOT</version>

<packaging>war</packaging>

<dependencies>

<!--junit依赖-->

<dependency>

<groupId>junit</groupId>

<artifactId>junit</artifactId>

<version>4.12</version>

</dependency>

<!--log4j依赖-->

<dependency>

<groupId>log4j</groupId>

<artifactId>log4j</artifactId>

<version>1.2.12</version>

</dependency>

<!--mybatis依赖-->

<dependency>

<groupId>org.mybatis</groupId>

<artifactId>mybatis</artifactId>

<version>3.4.4</version>

</dependency>

<!--mysql依赖-->

<dependency>

<groupId>mysql</groupId>

<artifactId>mysql-connector-java</artifactId>

<version>5.1.44</version>

</dependency>

</dependencies>



</project>

pojo


 

package com.ma.ssm.pojo;


public class User {

private Integer id;

private String name;

private Integer age;


public Integer getId() {

return id;

}


public void setId(Integer id) {

this.id = id;

}


public String getName() {

return name;

}


public void setName(String name) {

this.name = name;

}


public Integer getAge() {

return age;

}


public void setAge(Integer age) {

this.age = age;

}


@Override

public String toString() {

return "User{" +

"id=" + id +

", name='" + name + '\'' +

", age=" + age +

'}';

}

}

sqlConfig.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>

<environments default="development">

<environment id="development">

<transactionManager type="JDBC"></transactionManager>

<dataSource type="POOLED">

<property name="driver" value="com.mysql.jdbc.Driver"/>

<property name="url" value="jdbc:mysql://localhost:3306/mybatis?characterEncoding=utf8"/>

<property name="username" value="root"/>

<property name="password" value="123456"/>

</dataSource>

</environment>

</environments>


<mappers>

<package name="com.ma.ssm.mapper"></package>

</mappers>

</configuration>

log4j.properties


 

### direct log messages to stdout ###

log4j.appender.stdout=org.apache.log4j.ConsoleAppender

log4j.appender.stdout.Target=System.out

log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

log4j.rootLogger=debug, stdout

UserMapper.java
 

package com.ma.ssm.mapper;


import com.ma.ssm.pojo.User;


public interface UserMapper {

public User findUserById(Integer id);

}

UserMapper.xml

<?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.ma.ssm.mapper.UserMapper">

<select id="findUserById" parameterType="Integer" resultType="com.ma.ssm.pojo.User">

select * from user where id = #{value}

</select>

</mapper>

测试

package ssm.mapper;


import com.ma.ssm.mapper.UserMapper;

import com.ma.ssm.pojo.User;

import org.apache.ibatis.io.Resources;

import org.apache.ibatis.session.SqlSession;

import org.apache.ibatis.session.SqlSessionFactory;

import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import org.junit.Test;


import java.io.InputStream;


public class UserDaoTest {

@Test

public void addUser() throws Exception {

InputStream conf = Resources.getResourceAsStream("SqlMapConfig.xml");

//创建会话工厂

SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(conf);

SqlSession sqlSession = sqlSessionFactory.openSession(true);

UserMapper mapper = sqlSession.getMapper(UserMapper.class);

User user = mapper.findUserById(2);

System.out.println(user);


}

}

数据库

效果

第二步：进行MyBatis项目和Spring整合的构建

pom.xml

<?xml version="1.0" encoding="UTF-8"?>


<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd">

<modelVersion>4.0.0</modelVersion>


<groupId>com.ma</groupId>

<artifactId>ssm</artifactId>

<version>1.0-SNAPSHOT</version>

<packaging>war</packaging>

<dependencies>

<!--junit依赖-->

<dependency>

<groupId>junit</groupId>

<artifactId>junit</artifactId>

<version>4.12</version>

</dependency>

<!--log4j依赖-->

<dependency>

<groupId>log4j</groupId>

<artifactId>log4j</artifactId>

<version>1.2.12</version>

</dependency>

<!--mybatis依赖-->

<dependency>

<groupId>org.mybatis</groupId>

<artifactId>mybatis</artifactId>

<version>3.4.4</version>

</dependency>

<!--mysql依赖-->

<dependency>

<groupId>mysql</groupId>

<artifactId>mysql-connector-java</artifactId>

<version>5.1.44</version>

</dependency>

<!--c3p0连接池-->

<dependency>

<groupId>com.mchange</groupId>

<artifactId>c3p0</artifactId>

<version>0.9.5.2</version>

</dependency>


<!--spring整合mybatis的依赖-->

<dependency>

<groupId>org.mybatis</groupId>

<artifactId>mybatis-spring</artifactId>

<version>1.3.1</version>

</dependency>

<!--导入spring的依赖-->

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-webmvc</artifactId>

<version>4.3.12.RELEASE</version>

</dependency>

<!--Spring整合单元测试的依赖-->

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-test</artifactId>

<version>4.3.10.RELEASE</version>

</dependency>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-jdbc</artifactId>

<version>4.3.12.RELEASE</version>

</dependency>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-tx</artifactId>

<version>4.3.12.RELEASE</version>

</dependency>


</dependencies>

<build>

<resources>

<resource>

<directory>src/main/java</directory>

<includes>

<include>**/*.xml</include>

</includes>

<filtering>false</filtering>

</resource>

</resources>

</build>


</project>

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"

xmlns:context="http://www.springframework.org/schema/context"

xmlns:aop="http://www.springframework.org/schema/aop"

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/aop

http://www.springframework.org/schema/aop/spring-aop.xsd">

<!-- 配置c3p0连接池 -->

<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

<property name="driverClass" value="com.mysql.jdbc.Driver"/>

<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/mybatis?characterEncoding=utf8"/>

<property name="user" value="root"/>

<property name="password" value="123456"/>

</bean>

<!--mybatis整合spring-->

<bean name="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

<property name="dataSource" ref="dataSource"/>

<property name="configLocation" value="classpath:SqlMapConfig.xml"/>

</bean>

<!--mapper扫描器 bean的id为mapper类名首字母小写-->

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

<property name="basePackage" value="com.ma.ssm.mapper"/>

<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>

</bean>

<!--Spring的注解扫描器-->

<context:component-scan base-package="com.ma.ssm"/>

</beans>

UserService.java

package com.ma.ssm.service;


import com.ma.ssm.mapper.UserMapper;

import com.ma.ssm.pojo.User;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;


@Service

public class UserService {

@Autowired

private UserMapper userMapper;

public User findUserById(Integer id){

User user = userMapper.findUserById(id);

return user;

}

}

UserServiceTest.java


 

package ssm.service;


import com.ma.ssm.pojo.User;

import com.ma.ssm.service.UserService;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.test.context.ContextConfiguration;

import org.springframework.test.context.junit4.SpringRunner;


@RunWith(SpringRunner.class)

@ContextConfiguration("classpath:applicationContext.xml")

public class UserServiceTest {

@Autowired

private UserService userService;

@Test

public void testFindUserById(){

User user = userService.findUserById(3);

System.out.println(user);

}


}

数据库

效果

在MyBatis和Spring 整合后理论上不在需要MyBatis 的sqlConfig.xml 文件，但一般我们都会保留还可以利用它进行配置别名的操作。

第三步：进行MyBatis项目和Spring、SprigMVC整合的构建'

pom.xml

<?xml version="1.0" encoding="UTF-8"?>


<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd">

<modelVersion>4.0.0</modelVersion>


<groupId>com.ma</groupId>

<artifactId>ssm</artifactId>

<version>1.0-SNAPSHOT</version>

<packaging>war</packaging>

<dependencies>

<!--servlet的依赖-->

<dependency>

<groupId>javax.servlet</groupId>

<artifactId>javax.servlet-api</artifactId>

<version>3.1.0</version>

<scope>provided</scope>

</dependency>


<dependency>

<groupId>javax.servlet.jsp</groupId>

<artifactId>jsp-api</artifactId>

<version>2.2</version>

<scope>provided</scope>

</dependency>

<!--junit依赖-->

<dependency>

<groupId>junit</groupId>

<artifactId>junit</artifactId>

<version>4.12</version>

</dependency>

<!--log4j依赖-->

<dependency>

<groupId>log4j</groupId>

<artifactId>log4j</artifactId>

<version>1.2.12</version>

</dependency>

<!--mybatis依赖-->

<dependency>

<groupId>org.mybatis</groupId>

<artifactId>mybatis</artifactId>

<version>3.4.4</version>

</dependency>

<!--mysql依赖-->

<dependency>

<groupId>mysql</groupId>

<artifactId>mysql-connector-java</artifactId>

<version>5.1.44</version>

</dependency>

<!--c3p0连接池-->

<dependency>

<groupId>com.mchange</groupId>

<artifactId>c3p0</artifactId>

<version>0.9.5.2</version>

</dependency>


<!--spring整合mybatis的依赖-->

<dependency>

<groupId>org.mybatis</groupId>

<artifactId>mybatis-spring</artifactId>

<version>1.3.1</version>

</dependency>

<!--导入spring的依赖-->

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-webmvc</artifactId>

<version>4.3.12.RELEASE</version>

</dependency>

<!--Spring整合单元测试的依赖-->

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-test</artifactId>

<version>4.3.10.RELEASE</version>

</dependency>

<!--Spring的jdbc-->

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-jdbc</artifactId>

<version>4.3.12.RELEASE</version>

</dependency>

<!--Spring事务-->

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-tx</artifactId>

<version>4.3.12.RELEASE</version>

</dependency>


</dependencies>

<build>

<resources>

<resource>

<directory>src/main/java</directory>

<includes>

<include>**/*.xml</include>

</includes>

<filtering>false</filtering>

</resource>

</resources>

</build>


</project>

springmvc.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:aop="http://www.springframework.org/schema/aop"

xmlns:tx="http://www.springframework.org/schema/tx"

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/aop

http://www.springframework.org/schema/aop/spring-aop.xsd

http://www.springframework.org/schema/tx

http://www.springframework.org/schema/tx/spring-tx.xsd

http://www.springframework.org/schema/mvc

http://www.springframework.org/schema/mvc/spring-mvc.xsd">


<!--配置前端控制器(在web.xml中配置)-->

<!--配置处理器映射器-->

<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>

<!--处理器适配器-->

<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/>

<!--配置视图解析器-->

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"/>

<!--配置处理器(注解开发无需配置)-->

<context:component-scan base-package="com.ma.ssm.controller"/>

</beans>

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/javaeehttp://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"

version="3.1">

<!--ServletContext创建时加载Spring工厂-->

<context-param>

<param-name>contextConfigLocation</param-name>

<param-value>classpath:applicationContext.xml</param-value>

</context-param>

<listener>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>



<!--当访问*.action时加载springmvc-->

<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.xml</param-value>

</init-param>

</servlet>


<servlet-mapping>

<servlet-name>dispatcherServlet</servlet-name>

<url-pattern>*.action</url-pattern>

</servlet-mapping>

</web-app>

UserController

package com.ma.ssm.controller;


import com.ma.ssm.pojo.User;

import com.ma.ssm.service.UserService;

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 javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;


@Controller

@RequestMapping("/user")

public class UserController {

@Autowired

private UserService userService;

@RequestMapping("/findUserById")

public ModelAndView findUsrById(HttpServletRequest request, HttpServletResponse response,Integer id){

ModelAndView modelAndView = new ModelAndView();

modelAndView.setViewName("/user.jsp");

User user = userService.findUserById(id);

modelAndView.addObject("user",user);

return modelAndView;


}

}

user.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<html>

<head>

<title>Title</title>

</head>

<body>

${user.name}



</body>

</html>

数据库

访问

http://localhost:8080/user/findUserById.action?id=3

效果

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