SSI的实例（登录增删改查）

源码下载：http://download.csdn.net/detail/u011518709/8195143

主要jar包：

配置文件：web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
	xmlns="http://java.sun.com/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
	<filter>
		<filter-name>struts2</filter-name>
		<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>struts2</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

	 <context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>/WEB-INF/applicationContext.xml</param-value>
	</context-param>
	<!-- 整合spring -->
	<listener>
        <listener-class>
            org.springframework.web.context.ContextLoaderListener
        </listener-class>
    </listener>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

spring配置文件：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"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

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

    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location">
            <value>/WEB-INF/jdbc.properties</value>
        </property>
    </bean>

    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName">
            <value>${jdbc.driverClassName}</value>
        </property>
        <property name="url">
            <value>${jdbc.url}</value>
        </property>
        <property name="username">
            <value>${jdbc.username}</value>
        </property>
        <property name="password">
            <value>${jdbc.password}</value>
        </property>
        <property name="maxActive" value="100"/>
        <property name="maxIdle" value="30"/>
        <property name="maxWait" value="1000"/>
        <property name="defaultAutoCommit" value="true"/>
        <property name="removeAbandoned" value="true"/>
        <property name="removeAbandonedTimeout" value="60"/>
    </bean>

    <bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
        <property name="dataSource">
            <ref bean="dataSource"/>
        </property>
        <property name="configLocation">
            <value>/WEB-INF/sql-map-config.xml</value>
        </property>
    </bean>
    <bean id="userdao" class="com.dao.UserDaoImpl">
       <property name="sqlMapClient">
           <ref bean="sqlMapClient"/>
       </property>
    </bean>
    <bean id="userservice" class="com.service.UserServiceImpl">
		<property name="userdao">
			<ref bean="userdao" />
		</property>
	</bean>	

</beans>

数据库配置文件：jdbc.properties

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/exe_test
jdbc.username=root
jdbc.password=root

sql-map-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE sqlMapConfig  PUBLIC "-//ibatis.apache.org//DTD SQL Map Config 2.0//EN"   "http://ibatis.apache.org/dtd/sql-map-config-2.dtd">
<sqlMapConfig>
  <sqlMap resource="com/pojo/User.xml"/>
</sqlMapConfig>

　主要介绍下：hibernate和sqlMapClient 查询的底层方法的区别：

  UserdaoImpl.java　

package com.dao;
import java.sql.SQLException;
import java.util.List;

import com.ibatis.sqlmap.client.SqlMapClient;
import com.pojo.User;
public class UserDaoImpl implements UserDao{
    private SqlMapClient sqlMapClient;
	public void setSqlMapClient(SqlMapClient sqlMapClient) {
		this.sqlMapClient = sqlMapClient;
	}

	public User Login(User u) {
	    User user = null;
		try {
			 user = (User)sqlMapClient.queryForObject("login", u);
		 } catch (SQLException e) {
	            e.printStackTrace();
	     }
	        return user;
	     }

	public boolean isInsert(User user) {
        boolean b;
        try {
            sqlMapClient.insert("insert", user);
            b = true;
        } catch (SQLException e) {
            e.printStackTrace();
            b = false;
        }
        return b ;
    }

	public boolean isDelete(int id){
	    User user = null;
        boolean b;
        try{
            sqlMapClient.delete("delete",id);
            b = true;
        }catch(SQLException e){
            e.printStackTrace();
            b = false;
        }
        return b;
    }

	public boolean update(User user) {
        boolean b ;
        try {
            sqlMapClient.update("update", user);
            b = true;
        } catch (Exception e) {
            b = false;
        }
        return b;
    }

	public User queryById(int id ) {
	    User user = null;
        try {
            user = (User) sqlMapClient.queryForObject("querybyid",id);
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return user;
    }

	public List<User> queryAll() {
        List list = null;
        User user = new User();
        try {
            list = sqlMapClient.queryForList("queryAll",user);
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return list;
    }
}

User.xml (增删改查的语句) 

<?xml version="1.0" encoding="gb2312" standalone="no"?>
<!DOCTYPE sqlMap PUBLIC "-//iBATIS.com//DTD SQL Map 2.0//EN"
        "http://www.ibatis.com/dtd/sql-map-2.dtd">
<sqlMap>
  <typeAlias alias="User" type="com.pojo.User" />
     <resultMap id="UserResult" class="User">
       <result property="id" column="ID" />
	   <result property="username" column="USERNAME" />
	   <result property="password" column="PASSWORD" />
	 </resultMap>

	 <select id="login" resultMap="UserResult" parameterClass="User">
		 select * from USER where USERNAME=#username# and PASSWORD=#password#
	 </select>

	 <insert id="insert" parameterClass="User">
		insert into USER(ID,USERNAME,PASSWORD)values(#id#,#username#,#password#)
	 </insert>

	<delete id="delete" parameterClass="int">
        delete from USER where ID = #id#
    </delete>

	<update id="update" parameterClass="User">
        update USER set USERNAME=#username#,PASSWORD=#password# where ID = #id#
    </update>

	<select id="querybyid" parameterClass="int" resultClass="User">
        select * from USER where ID = #id#
    </select> 

     <select id="queryAll" parameterClass="User" resultClass="User">
        select * from USER
    </select>
</sqlMap>

ibatis后台查询的学习总结参考：http://blog.csdn.net/estelle_belle/article/details/41448589