java：Mybatis框架3（二级缓存，延时和积极加载，SSI（Ibatis）集成，SSM集成）

<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../config/ehcache.xsd">
    <diskStore path="java.io.tmpdir"/>
    <!--
    Mandatory Default Cache configuration. These settings will be applied to caches
    created programmtically using CacheManager.add(String cacheName)
    -->
    <!--
       name:缓存名称。
       maxElementsInMemory：缓存最大个数。
       eternal:对象是否永久有效，一但设置了，timeout将不起作用。
       timeToIdleSeconds：设置对象在失效前的允许闲置时间（单位：秒）。仅当eternal=false对象不是永久有效时使用，可选属性，默认值是0，也就是可闲置时间无穷大。
       timeToLiveSeconds：设置对象在失效前允许存活时间（单位：秒）。最大时间介于创建时间和失效时间之间。仅当eternal=false对象不是永久有效时使用，默认是0.，也就是对象存活时间无穷大。
       overflowToDisk：当内存中对象数量达到maxElementsInMemory时，Ehcache将会对象写到磁盘中。
       diskSpoolBufferSizeMB：这个参数设置DiskStore（磁盘缓存）的缓存区大小。默认是30MB。每个Cache都应该有自己的一个缓冲区。
       maxElementsOnDisk：硬盘最大缓存个数。
       diskPersistent：是否缓存虚拟机重启期数据 Whether the disk store persists between restarts of the Virtual Machine. The default value is false.
       diskExpiryThreadIntervalSeconds：磁盘失效线程运行时间间隔，默认是120秒。
       memoryStoreEvictionPolicy：当达到maxElementsInMemory限制时，Ehcache将会根据指定的策略去清理内存。默认策略是LRU（最近最少使用）。你可以设置为FIFO（先进先出）或是LFU（较少使用）。
       clearOnFlush：内存数量最大时是否清除。
    -->
    <defaultCache
            maxElementsInMemory="10000"
            eternal="false"
            timeToIdleSeconds="120"
            timeToLiveSeconds="120"
            overflowToDisk="true"
            maxElementsOnDisk="10000000"
            diskPersistent="false"
            diskExpiryThreadIntervalSeconds="120"
            memoryStoreEvictionPolicy="LRU"
    />
</ehcache>

<?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="cn.zzsxt.mapper.TbUserMapper">
    
    
    <!-- 开启二级缓存 -->
<!--     <cache></cache> -->
    
    
    <!--设置映射文件中cache标签的type值为ehcache的实现类 -->
    <cache type="org.mybatis.caches.ehcache.EhcacheCache"></cache>
    <select id="findUserById" parameterType="java.lang.Long"  resultType="cn.zzsxt.entity.TbUser">
        select * from tb_user where id=#{id}
    </select>
</mapper>        

<?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>
    
    <!-- 加载属性文件 -->
       <properties resource="db.properties"/>
  
  
       <!-- 全局参数的设置 -->
       <settings>
           <!--延迟加载 默认false -->
           <setting name="lazyLoadingEnabled" value="true"/>
            <!-- 积极加载 默认true -->
           <setting name="aggressiveLazyLoading" value="false"/>      
           <!-- 开启二级缓存 -->
           <setting name="cacheEnabled" value="true"/>
       </settings>
    
    
    <environments default="development">
         <environment id="development">
             <!-- 使用jdbc中的事务 -->
            <transactionManager type="JDBC"></transactionManager>         
            <!-- 配置数据源 -->
            <dataSource type="POOLED">
                 <property name="driver" value="${driver}"/>
                 <property name="url" value="${url}"/>
                 <property name="username" value="${username}"/>
                 <property name="password" value="${password}"/>
            </dataSource>
         </environment>
    </environments>
    <!-- 引入映射文件 -->
    <mappers>
<!--         <mapper resource="cn/zzsxt/mapper/TbUserMapper.xml"/> -->
<!-- 注意：此种方法要求mapper接口和mapper映射文件要名称相同，且放到同一个目录下； -->
<!--         <mapper class="cn.zzsxt.mapper.TbUserMapper"/> -->
<!-- 注意：此种方法要求mapper接口和mapper映射文件要名称相同，且放到同一个目录下； -->
             <package name="cn.zzsxt.mapper"/>
    </mappers>
</configuration>  

<?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-4.3.xsd
      http://www.springframework.org/schema/mvc
      http://www.springframework.org/schema/mvc/spring-mvc.xsd
      http://www.springframework.org/schema/context
      http://www.springframework.org/schema/context/spring-context.xsd">
 
 
     <!-- 注解扫描!!!-->
      <context:component-scan base-package="cn.zzsxt.ssm"></context:component-scan>
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>
        <property name="prefix" value="/WEB-INF/jsp/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
    <mvc:annotation-driven></mvc:annotation-driven>
    <mvc:default-servlet-handler/>
</beans>

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/ssh
username=root
password=root

<?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"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-4.3.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">
     <!-- 1.加载properties配置文件 -->
    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location" value="classpath:jdbc.properties"></property>
    </bean>
    <!-- 2.配置数据源DataSource -->    
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${driver}"></property>
        <property name="jdbcUrl" value="${url}"></property>
        <property name="user" value="${username}"></property>
        <property name="password" value="${password}"></property>
    </bean>
    <!-- 3.配置sqlSessionFactory,并注入数据源 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="mapperLocations">
            <list>
                <value>classpath:cn/zzsxt/ssm/entity/Userinfo.xml</value>
            </list>
        </property>
    </bean>
    <!-- 4.配置SqlSessionTemplate，注入sqlSessionFactory -->
    <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
        <constructor-arg index="0" ref="sqlSessionFactory"></constructor-arg>
    </bean>
    <!-- 5.配置DAO -->
    <bean id="userinfoDao" class="cn.zzsxt.ssm.dao.impl.UserinfoDaoImpl">
        <property name="sqlSessionTemplate" ref="sqlSessionTemplate"></property>
    </bean>
    <!-- 6.配置Service -->
    <bean id="userinfoService" class="cn.zzsxt.ssm.service.impl.UserinfoServiceImpl">
        <property name="userinfoDao" ref="userinfoDao"></property>
    </bean>
    
    <!-- 配置声明式事务 -->
    <!-- 配置事务管理器,并注入数据源 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="add*" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="delete*" propagation="REQUIRED"/>
            <tx:method name="*" propagation="SUPPORTS"/>
        </tx:attributes>
    </tx:advice>
    <aop:config>
        <aop:pointcut expression="execution(* cn.zzsxt.ssm.service.*.*(..))" id="serviceMethods"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="serviceMethods"/>
    </aop:config>
</beans>        

<?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">
  
  
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath*:applicationContext.xml</param-value>
  </context-param>
 
 
  <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>
 
 
  <servlet>
    <servlet-name>springmvc</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>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>

package cn.zzsxt.ssm.controller;

import java.util.List;

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 org.springframework.web.bind.annotation.RequestMethod;

import cn.zzsxt.ssm.entity.Userinfo;
import cn.zzsxt.ssm.service.UserinfoService;

@Controller
@RequestMapping("/user")
public class UserinfoController {
    
    @Autowired
    private UserinfoService userinfoService;
    
    public void setUserinfoService(UserinfoService userinfoService) {
        this.userinfoService = userinfoService;
    }

    /**
     * 查询用户信息
     * @param model
     * @return
     */
    @RequestMapping("/list")
    public String list(Model model){
        List<Userinfo> list = userinfoService.findAllUsers();    
        model.addAttribute("list", list);
        return "list";
    }
    /**
     * 跳转WEB-INF/jsp/add.jsp
     * @return
     */
    @RequestMapping(value="/add",method=RequestMethod.GET)
    public String add(){
        return "add";
    }
    /**
     * 添加用户
     * @param user
     * @return
     */
    @RequestMapping(value="/add",method=RequestMethod.POST)
    public String add(Userinfo user){
        int count = userinfoService.addUser(user);
        if(count>0){
            return "redirect:/user/list";
        }
        return "error";
    }
}

package cn.zzsxt.ssm.dao.impl;

import java.util.List;

import org.mybatis.spring.SqlSessionTemplate;

import cn.zzsxt.ssm.dao.UserinfoDao;
import cn.zzsxt.ssm.entity.Userinfo;

public class UserinfoDaoImpl implements UserinfoDao {
    private SqlSessionTemplate sqlSessionTemplate; 
    
    public void setSqlSessionTemplate(SqlSessionTemplate sqlSessionTemplate) {
        this.sqlSessionTemplate = sqlSessionTemplate;
    }
    
    @Override
    public List<Userinfo> findAllUsers() {
        return sqlSessionTemplate.selectList("user.findAllUsers");
    }

    @Override
    public int addUser(Userinfo user) {
        return sqlSessionTemplate.insert("user.addUser",user);
    }
}

<?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="user">
    <select id="findAllUsers" resultType="cn.zzsxt.ssm.entity.Userinfo">
        select * from userinfo
    </select>
    <insert id="addUser" parameterType="cn.zzsxt.ssm.entity.Userinfo">
        insert into userinfo(userName,userPass,userType) values(#{userName},#{userPass},#{userType})
    </insert>
</mapper>        

package cn.zzsxt.ssm.service.impl;

import java.util.List;

import cn.zzsxt.ssm.dao.UserinfoDao;
import cn.zzsxt.ssm.entity.Userinfo;
import cn.zzsxt.ssm.service.UserinfoService;

public class UserinfoServiceImpl implements UserinfoService {
    private UserinfoDao userinfoDao;
    
    public void setUserinfoDao(UserinfoDao userinfoDao) {
        this.userinfoDao = userinfoDao;
    }

    @Override
    public List<Userinfo> findAllUsers() {
        return userinfoDao.findAllUsers();
    }

    @Override
    public int addUser(Userinfo user) {
        return userinfoDao.addUser(user);
    }

}

package cn.zzsxt.ssm.test;

import java.util.List;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import cn.zzsxt.ssm.entity.Userinfo;
import cn.zzsxt.ssm.service.UserinfoService;

public class Test {
    public static void main(String[] args) {
        ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserinfoService userinfoService = ac.getBean("userinfoService",UserinfoService.class);
        List<Userinfo> list = userinfoService.findAllUsers();
        for (Userinfo userinfo : list) {
            System.out.println(userinfo);
        }
    }
}

<?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">
 
  <!-- ContextLoaderListener解析spring的配置文件 -->
  <listener>
      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <context-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath*:applicationContext.xml</param-value>
  </context-param>
  
  <!-- 解决post提交乱码问题 -->
  <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 mvc的前端控制器,类似struts2的核心过滤器 -->
  <servlet>
      <servlet-name>springmvc</servlet-name>
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  
  
      <!-- 通过contextConfigLocation参数指定配置文件的位置，默认在WEB-INF/查找名称为 [servlet-name]-servlet.xml -->
      <init-param>
          <param-name>contextConfigLocation</param-name>
          <param-value>classpath:springmvc.xml</param-value>
      </init-param>
  
  
      <!-- servlet随web容器而启动 -->
      <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
      <servlet-name>springmvc</servlet-name>
      <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>

<?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-4.3.xsd
      http://www.springframework.org/schema/mvc
      http://www.springframework.org/schema/mvc/spring-mvc.xsd
      http://www.springframework.org/schema/context
      http://www.springframework.org/schema/context/spring-context.xsd">
 
     <!-- 注解扫描!!!-->
      <context:component-scan base-package="cn.zzsxt.ssm"></context:component-scan>
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>
        <property name="prefix" value="/WEB-INF/jsp/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
    <mvc:annotation-driven></mvc:annotation-driven>
    <mvc:default-servlet-handler/>
</beans>

<?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:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-4.3.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/context
       http://www.springframework.org/schema/context/spring-context.xsd">
  
  
    <!-- 扫描注解包 -->
    <context:component-scan base-package="cn.zzsxt.ssm"></context:component-scan>  
  
  
    <!-- 2.配置数据源DataSource -->    
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver"></property>
        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/test"></property>
        <property name="user" value="root"></property>
        <property name="password" value="root"></property>
    </bean>
  
  
    <!-- 3.配置sqlSessionFactory,并注入数据源 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
          <!-- 加载cn/zzsxt/ssm/mapper/所有以 Mapper.xml结尾的映射文件 -->
         <property name="mapperLocations" value="classpath:cn/zzsxt/ssm/mapper/*Mapper.xml"></property>
    </bean>
   
   
    <!-- 4.配置MapperScannerConfigurer，用于扫描指定包下的Mapper接口，生成代理对象的id为Mapper接口名第一个字母小写 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.zzsxt.ssm.mapper"></property>
        <property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
    </bean>
  
  
  
    <!-- 配置声明式事务 -->
    <!-- 配置事务管理器,并注入数据源 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="add*" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="delete*" propagation="REQUIRED"/>
            <tx:method name="*" propagation="SUPPORTS"/>
        </tx:attributes>
    </tx:advice>
    <aop:config>
        <aop:pointcut expression="execution(* cn.zzsxt.ssm.service.*.*(..))" id="serviceMethods"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="serviceMethods"/>
    </aop:config>
</beans>        

package cn.zzsxt.ssm.controller;

import java.util.List;

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 org.springframework.web.bind.annotation.RequestMethod;

import cn.zzsxt.ssm.entity.Userinfo;
import cn.zzsxt.ssm.service.UserinfoService;

@Controller
@RequestMapping("/user")
public class UserinfoController {
    
    @Autowired
    private UserinfoService userinfoService;


    /**
     * 查询用户信息
     * @param model
     * @return
     */
    @RequestMapping("/list")
    public String list(Model model){
        List<Userinfo> list = userinfoService.findAllUsers();    
        model.addAttribute("list", list);
        return "list";
    }
    /**
     * 跳转WEB-INF/jsp/add.jsp
     * @return
     */
    @RequestMapping(value="/add",method=RequestMethod.GET)
    public String add(){
        return "add";
    }
    /**
     * 添加用户
     * @param user
     * @return
     */
    @RequestMapping(value="/add",method=RequestMethod.POST)
    public String add(Userinfo user){
        int count = userinfoService.addUser(user);
        if(count>0){
            return "redirect:/user/list";
        }
        return "error";
    }
}

package cn.zzsxt.ssm.entity;

import java.io.Serializable;

public class Userinfo implements Serializable {
    private int userId;
    private String userName;
    private String userPass;
    private int userType;
    public int getUserId() {
        return userId;
    }
    public void setUserId(int userId) {
        this.userId = userId;
    }
    public String getUserName() {
        return userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
    public String getUserPass() {
        return userPass;
    }
    public void setUserPass(String userPass) {
        this.userPass = userPass;
    }
    public int getUserType() {
        return userType;
    }
    public void setUserType(int userType) {
        this.userType = userType;
    }
    @Override
    public String toString() {
        return "Userinfo [userId=" + userId + ", userName=" + userName + ", userPass=" + userPass + ", userType="
                + userType + "]";
    }
    
}

package cn.zzsxt.ssm.mapper;

import java.util.List;

import cn.zzsxt.ssm.entity.Userinfo;

public interface UserinfoMapper {
    /**
     * 查询用户信息
     * @return
     */
    List<Userinfo> findAllUsers();
    /**
     * 新增用户
     * @param user
     * @return
     */
    int addUser(Userinfo user);
}

<?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="cn.zzsxt.ssm.mapper.UserinfoMapper">
    <select id="findAllUsers" resultType="cn.zzsxt.ssm.entity.Userinfo">
        select * from userinfo
    </select>
    <insert id="addUser" parameterType="cn.zzsxt.ssm.entity.Userinfo">
        insert into userinfo(userName,userPass,userType) values(#{userName},#{userPass},#{userType})
    </insert>
</mapper>        

package cn.zzsxt.ssm.service.impl;
import java.util.List;

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

import cn.zzsxt.ssm.entity.Userinfo;
import cn.zzsxt.ssm.mapper.UserinfoMapper;
import cn.zzsxt.ssm.service.UserinfoService;


//<bean id="userinfoService" class="cn.zzsxt.ssm.service.impl.UserinfoServiceImpl"></bean>
@Service("userinfoService")//此处可以 默认@Service  也可以起别名
public class UserinfoServiceImpl implements UserinfoService {
    
    @Autowired
    private UserinfoMapper userinfoMapper;
    

    @Override
    public List<Userinfo> findAllUsers() {
        return userinfoMapper.findAllUsers();
    }

    @Override
    public int addUser(Userinfo user) {
        return userinfoMapper.addUser(user);
    }

}

package cn.zzsxt.ssm.service;

import java.util.List;

import cn.zzsxt.ssm.entity.Userinfo;

public interface UserinfoService {
    /**
     * 查询用户信息
     * @return
     */
    List<Userinfo> findAllUsers();
    /**
     * 新增用户
     * @param user
     * @return
     */
    int addUser(Userinfo user);
}

package cn.zzsxt.ssm.test;

import java.util.List;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import cn.zzsxt.ssm.entity.Userinfo;
import cn.zzsxt.ssm.service.UserinfoService;

public class Test {
    public static void main(String[] args) {
        ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserinfoService userinfoService = (UserinfoService)ac.getBean("userinfoService");
        List<Userinfo> list = userinfoService.findAllUsers();
        for (Userinfo userinfo : list) {
            System.out.println(userinfo);
        }
    }
}