eclipse中搭建ssm框架

工具：jdk1.7+eclipse+tomcat+mysql。

这里用的版本是spring3，框架中用到的实体类和xml映射文件都可以用工具生成的。接下来会将源码贴出，方便初学者快速搭建。

一、新建一个web工程，添加目录包结构如下。

二、添加ssm所用的jar包。

三，修改web.xml代码如下。

<?xml version="1.0" encoding="UTF-8"?>
<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" id="WebApp_ID" version="3.0">
  <display-name>ssm</display-name>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>

    <!-- spring的配置文件-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>

     <!-- 编码过滤器 -->
    <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>

     <!-- Spring监听器 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
      <!-- 防止Spring内存溢出监听器 -->
    <listener>
        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
    </listener>

    <!-- spring mvc核心：分发servlet -->
    <servlet>
        <servlet-name>mvc-dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- spring mvc的配置文件 -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springMVC.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>mvc-dispatcher</servlet-name>
           <!-- 此处配置成*.do，对应struts的后缀习惯 -->
        <url-pattern>*.do</url-pattern>
        <!-- 此处配置成*.json，是为了能够截获"../*.json"格式的访问（例如android客户端） -->
        <url-pattern>*.json</url-pattern>
    </servlet-mapping>

</web-app>

四、添加applicationContext.xml和springMVC.xml配置文件。并修改配置文件中对应的资源路径。这里先贴出各个文件的位置。

1.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:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:jdbc="http://www.springframework.org/schema/jdbc"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="
     http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
     http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
     http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
     http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
     http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
     http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

   <context:annotation-config />
    <context:component-scan base-package="com.gh.service" />

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
      <property name="driverClassName">
          <value>com.mysql.jdbc.Driver</value>
      </property>
      <property name="url">
          <value>jdbc:mysql://localhost:3306/young?characterEncoding=UTF-8</value>  

      </property>
      <property name="username">
          <value>root</value>
      </property>
      <property name="password">
          <value>root</value>
      </property>
    </bean>
    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="typeAliasesPackage" value="com.gh.po" />
        <property name="dataSource" ref="dataSource"/>
        <property name="mapperLocations" value="classpath:com/gh/mapper/*.xml"/>
    </bean>
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.gh.dao,com.gh.mapper"/>
    </bean>
</beans>

2.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:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
    <context:annotation-config/>

    <context:component-scan base-package="com.gh.controller">
          <context:include-filter type="annotation"
          expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <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>
</beans>

五.编写测试代码。实现简单查询。

UserMapper.java

package com.gh.dao;

import java.util.List;

import com.gh.po.User;

public interface UserMapper {
    int deleteByPrimaryKey(Integer userid);

    int insert(User record);

    int insertSelective(User record);

    User selectByPrimaryKey(Integer userid);

    int updateByPrimaryKeySelective(User record);

    int updateByPrimaryKey(User record);
    List<User> selectAll();
}

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.gh.dao.UserMapper" >
  <resultMap id="BaseResultMap" type="com.gh.po.User" >
    <id column="userid" property="userid" jdbcType="INTEGER" />
    <result column="userName" property="username" jdbcType="VARCHAR" />
    <result column="pwd" property="pwd" jdbcType="VARCHAR" />
  </resultMap>
  <sql id="Base_Column_List" >
    userid, userName, pwd
  </sql>
  <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
    select
    <include refid="Base_Column_List" />
    from user
    where userid = #{userid,jdbcType=INTEGER}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
    delete from user
    where userid = #{userid,jdbcType=INTEGER}
  </delete>
  <insert id="insert" parameterType="com.gh.po.User" >
    insert into user (userid, userName, pwd
      )
    values (#{userid,jdbcType=INTEGER}, #{username,jdbcType=VARCHAR}, #{pwd,jdbcType=VARCHAR}
      )
  </insert>
  <insert id="insertSelective" parameterType="com.gh.po.User" >
    insert into user
    <trim prefix="(" suffix=")" suffixOverrides="," >
      <if test="userid != null" >
        userid,
      </if>
      <if test="username != null" >
        userName,
      </if>
      <if test="pwd != null" >
        pwd,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides="," >
      <if test="userid != null" >
        #{userid,jdbcType=INTEGER},
      </if>
      <if test="username != null" >
        #{username,jdbcType=VARCHAR},
      </if>
      <if test="pwd != null" >
        #{pwd,jdbcType=VARCHAR},
      </if>
    </trim>
  </insert>
  <update id="updateByPrimaryKeySelective" parameterType="com.gh.po.User" >
    update user
    <set >
      <if test="username != null" >
        userName = #{username,jdbcType=VARCHAR},
      </if>
      <if test="pwd != null" >
        pwd = #{pwd,jdbcType=VARCHAR},
      </if>
    </set>
    where userid = #{userid,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKey" parameterType="com.gh.po.User" >
    update user
    set userName = #{username,jdbcType=VARCHAR},
      pwd = #{pwd,jdbcType=VARCHAR}
    where userid = #{userid,jdbcType=INTEGER}
  </update>
  <select id="selectAll" resultType="com.gh.po.User">
   select * from user
  </select >
</mapper>

User.java

package com.gh.po;

public class User {
    private Integer userid;

    private String username;

    private String pwd;

    public Integer getUserid() {
        return userid;
    }

    public void setUserid(Integer userid) {
        this.userid = userid;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPwd() {
        return pwd;
    }

    public void setPwd(String pwd) {
        this.pwd = pwd;
    }
}

UserService.java

package com.gh.service;

import com.gh.dao.UserMapper;
public interface UserService extends UserMapper{

}

UserServiceimpl.java

package com.gh.service.impl;

import java.util.List;

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

import com.gh.dao.UserMapper;
import com.gh.po.User;
import com.gh.service.UserService;
@Transactional
@Service
public class UserServiceimpl implements UserService{
@Autowired
  private UserMapper us;
    @Override
    public int deleteByPrimaryKey(Integer userid) {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public int insert(User record) {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public int insertSelective(User record) {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public User selectByPrimaryKey(Integer userid) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public int updateByPrimaryKeySelective(User record) {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public int updateByPrimaryKey(User record) {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public List<User> selectAll() {
        // TODO Auto-generated method stub
        return us.selectAll();
    }

}

最好编写测试代码：

 package com.gh.controller;

 import java.util.List;

 import javax.annotation.Resource;

 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.springframework.test.context.ContextConfiguration;
 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 import com.gh.po.User;
 import com.gh.service.UserService;
 @RunWith(SpringJUnit4ClassRunner.class)
 @ContextConfiguration(locations="classpath:applicationContext.xml")
 public class UserController {
 @Resource
 private   UserService us;
 @Test
     public  void selectAllUser(){
         List <User> list=us.selectAll();
         if(list.size()>0){
             for (User user : list) {
                 System.out.println(user.getUsername());
             }
         }

     }

 }

打印出信息如下：说明框架成功运转。

[org.springframework.beans.factory.xml.XmlBeanDefinitionReader] - Loading XML bean definitions from class path resource [applicationContext.xml]
  [org.springframework.context.support.GenericApplicationContext] - Refreshing org.springframework.context.support.GenericApplicationContext@1fe398a0: startup date [Tue Apr 24 16:00:53 CST 2018]; root of context hierarchy
  [org.springframework.beans.factory.support.DefaultListableBeanFactory] - Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@2f0cccfb: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,userServiceimpl,dataSource,sqlSession,org.mybatis.spring.mapper.MapperScannerConfigurer#0,org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor,userMapper]; root of factory hierarchy
  [org.springframework.jdbc.datasource.DriverManagerDataSource] - Loaded JDBC driver: com.mysql.jdbc.Driver
  华哥
陈哥
光哥
[org.springframework.context.support.GenericApplicationContext] - Closing org.springframework.context.support.GenericApplicationContext@1fe398a0: startup date [Tue Apr 24 16:00:53 CST 2018]; root of context hierarchy
  [org.springframework.beans.factory.support.DefaultListableBeanFactory] - Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@2f0cccfb: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,userServiceimpl,dataSource,sqlSession,org.mybatis.spring.mapper.MapperScannerConfigurer#0,org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor,userMapper]; root of factory hierarchy