通往架构师道路之一：ssm（spring+springMVC+mybatis）三大框架整合详细教程

一. 开发环境搭建

百度都找得到，这里不细说。

二. Maven Web项目创建

百度都找得到，这里不细说。

三. ssm整合

1.完整的目录结构

2.pom.xml文件（需要注意版本冲突）

<properties>
        
        <spring.version>4.3.14.RELEASEspring.version>
        
        <mybatis.version>3.4.1mybatis.version>
        
        <slf4j.version>1.7.7slf4j.version>
        <log4j.version>1.2.17log4j.version>
    properties>
    <dependencies>
        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <version>4.12version>
            
            <scope>testscope>
        dependency>
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-webmvcartifactId>
            <version>${spring.version}version>
        dependency>
        
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-jdbcartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-testartifactId>
            <version>${spring.version}version>
        dependency>
        
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatisartifactId>
            <version>${mybatis.version}version>
        dependency>
        
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatis-springartifactId>
            <version>1.3.0version>
        dependency>
        
        <dependency>
            <groupId>javaxgroupId>
            <artifactId>javaee-apiartifactId>
            <version>7.0version>
        dependency>
        
        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>5.1.38version>
        dependency>
        
        <dependency>
            <groupId>commons-dbcpgroupId>
            <artifactId>commons-dbcpartifactId>
            <version>1.2.2version>
        dependency>
        
        <dependency>
            <groupId>jstlgroupId>
            <artifactId>jstlartifactId>
            <version>1.2version>
        dependency>
        
        <dependency>
            <groupId>log4jgroupId>
            <artifactId>log4jartifactId>
            <version>${log4j.version}version>
        dependency>
        
        <dependency>
            <groupId>com.alibabagroupId>
            <artifactId>fastjsonartifactId>
            <version>1.1.41version>
        dependency>
        <dependency>
            <groupId>org.slf4jgroupId>
            <artifactId>slf4j-apiartifactId>
            <version>${slf4j.version}version>
        dependency>
        <dependency>
            <groupId>org.slf4jgroupId>
            <artifactId>slf4j-log4j12artifactId>
            <version>${slf4j.version}version>
        dependency>
        
        <dependency>
            <groupId>org.codehaus.jacksongroupId>
            <artifactId>jackson-mapper-aslartifactId>
            <version>1.9.13version>
        dependency>
    dependencies>
    <build>
        <finalName>ssmfinalName>
    build>

3.Spring与MyBatis的整合

1）建立JDBC属性文件jdbc.properties （文件编码修改为 utf-8 ）

driverClassName=com.mysql.jdbc.Driver
jdbc_url=jdbc:mysql://localhost:3306/spring?useUnicode=true&characterEncoding=UTF-8
jdbc_username=root
jdbc_password=123456
#定义初始连接数
initialSize=0
#定义最大连接数
maxActive=20
#定义最大空闲
maxIdle=20
#定义最小空闲
minIdle=1
#定义最长等待时间
maxWait=60000

2）建立spring-mybatis.xml配置文件

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    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-3.1.xsd  
    http://www.springframework.org/schema/context  
    http://www.springframework.org/schema/context/spring-context-3.1.xsd  
    http://www.springframework.org/schema/mvc  
    http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

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

    
    <bean id="propertyConfigurer"
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location" value="classpath:jdbc.properties" />
    bean>
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
        destroy-method="close">
        <property name="driverClassName" value="${driverClassName}" />
        <property name="url" value="${jdbc_url}" />
        <property name="username" value="${jdbc_username}" />
        <property name="password" value="${jdbc_password}" />
        
        <property name="initialSize" value="${initialSize}">property>
        
        <property name="maxActive" value="${maxActive}">property>
        
        <property name="maxIdle" value="${maxIdle}">property>
        
        <property name="minIdle" value="${minIdle}">property>
        
        <property name="maxWait" value="${maxWait}">property>
    bean>

    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        
        <property name="mapperLocations" value="classpath:com/lsy/ssm/mapping/*.xml">property>
    bean>

    
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.lsy.ssm.dao" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory">property>
    bean>

    
    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    bean>
beans>

3）Log4j的配置

#定义LOG输出级别
log4j.rootLogger=INFO,Console,File
#定义日志输出目的地为控制台
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.Target=System.out
#可以灵活地指定日志输出格式，下面一行是指定具体的格式
log4j.appender.Console.layout = org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n

#文件大小到达指定尺寸的时候产生一个新的文件
log4j.appender.File = org.apache.log4j.RollingFileAppender
#指定输出目录
log4j.appender.File.File = logs/ssm.log
#定义文件最大大小
log4j.appender.File.MaxFileSize = 10MB
# 输出所以日志，如果换成DEBUG表示输出DEBUG以上级别日志
log4j.appender.File.Threshold = ALL
log4j.appender.File.layout = org.apache.log4j.PatternLayout
log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n

4）JUnit测试

①创建测试用表

本文使用mysql数据库

CREATE TABLE `user` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `user_name` varchar(40) NOT NULL,
  `password` varchar(255) NOT NULL,
  `age` int(4) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;

/*Data for the table `user` */

insert  into `user`(`id`,`user_name`,`password`,`age`) values (1,'你好','sfasgfaf',24);

②利用MyBatis Generator自动创建代码

参考博客：https://blog.csdn.net/qq_33269520/article/details/79785214
自动生成 User.java,UserMapper,IUserDao.java 三个文件，拷到项目中来，
下面给出service的接口和实现类代码：
service：

package com.lsy.ssm.service;

import com.lsy.ssm.pojo.User;

public interface IUserService {
    public User getUserById(int userId);
}

serviceImpl:

package com.lsy.ssm.serviceImpl;

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

import com.lsy.ssm.dao.IUserDao;
import com.lsy.ssm.pojo.User;
import com.lsy.ssm.service.IUserService;

@Service
public class UserServiceImpl implements IUserService {
    @Autowired
    private IUserDao userDao;

    public User getUserById(int userId) {
        return this.userDao.selectByPrimaryKey(userId);
    }
}

③建立测试类

MybatisTest：

package com.lsy.ssm;

import org.apache.log4j.Logger;
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.SpringJUnit4ClassRunner;

import com.alibaba.fastjson.JSON;
import com.lsy.ssm.pojo.User;
import com.lsy.ssm.service.IUserService;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:spring-mybatis.xml" })
public class MybatisTest {
    public static Logger logger = Logger.getLogger(MybatisTest.class);

    @Autowired
    private IUserService userService;
    @Test
    public void testMybatis(){
        User user = userService.getUserById(1);
        logger.info(JSON.toJSONString(user));
    }
}

测试结果：

至此， 完成Spring和mybatis这两大框架的整合 ，下面在继续进行SpringMVC的整合。

4.整合SpringMVC

1）配置spring-mvc.xml

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    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-3.1.xsd  
    http://www.springframework.org/schema/context  
    http://www.springframework.org/schema/context/spring-context-3.1.xsd  
    http://www.springframework.org/schema/mvc  
    http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

    
    <context:component-scan base-package="com.lsy.ssm.controller" />
    
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    bean>
beans>

2）配置web.xml文件

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    version="3.0">
    <display-name>Archetype Created Web Applicationdisplay-name>
    
    <context-param>
        <param-name>contextConfigLocationparam-name>
        <param-value>classpath:spring-mybatis.xmlparam-value>
    context-param>
    
    <filter>
        <filter-name>encodingFilterfilter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
        <async-supported>trueasync-supported>
        <init-param>
            <param-name>encodingparam-name>
            <param-value>UTF-8param-value>
        init-param>
    filter>
    <filter-mapping>
        <filter-name>encodingFilterfilter-name>
        <url-pattern>/*url-pattern>
    filter-mapping>
    
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
    listener>
    
    <listener>
        <listener-class>org.springframework.web.util.IntrospectorCleanupListenerlistener-class>
    listener>
    
    <servlet>
        <servlet-name>SpringMVCservlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
        <init-param>
            <param-name>contextConfigLocationparam-name>
            <param-value>classpath:spring-mvc.xmlparam-value>
        init-param>
        <load-on-startup>1load-on-startup>
        <async-supported>trueasync-supported>
    servlet>
    <servlet-mapping>
        <servlet-name>SpringMVCservlet-name>
        
        <url-pattern>/url-pattern>
    servlet-mapping>
    <welcome-file-list>
        <welcome-file>/index.jspwelcome-file>
    welcome-file-list>
web-app>

3）测试

①新建jsp页面

showUser.jsp

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

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>testtitle>
head>
<body>
    ${user.userName}
body>
html>

②建立UserController类

UserController.java

package com.lsy.ssm.controller;

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.lsy.ssm.pojo.User;
import com.lsy.ssm.service.IUserService;

@Controller
@RequestMapping("/user")
public class UserController {
    @Autowired
    private IUserService userService;
    @RequestMapping("/showUser")
    public String toIndex(HttpServletRequest request, Model model ){
        int userId = Integer.parseInt(request.getParameter("id"));
        User user = userService.getUserById(userId);
        model.addAttribute("user", user);
        return "showUser";
    }
}

③tomcat部署项目

输入地址： localhost:8080/ 项目名称 /user/showUser?id=1

至此，SSM三大框架的整合就完成了，在此基础上可再集成其他功能。