Spring框架整合MyBatis框架使用jndi的方式从服务器中获取datasource资源

其实这是更近一步的简化，不用每次都创建链接数据库的资源了，现在使用的是在tomcat服务器段配置数据源的方式，其实变得更加的高效的简便了。

需求：同样还是查询用户列表信息

applicationContext.xml配置文件

<?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:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    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-3.2.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.2.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop-3.2.xsd">

    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">    
        <property name="location">
            <value>classpath:database.properties</value>        
        </property>
    </bean>
    <!-- 配置DataSource -->
    <!-- <bean id="dataSource" destroy-method="close" class="org.apache.commons.dbcp.BasicDataSource">
        <property name="driverClassName" value="${jdbc.driver}" />
        <property name="url" value="${jdbc.url}" />
        <property name="username" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />
    </bean> -->
    <!-- 配置jndi的数据源 -->
    <bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
        <property name="jndiName">
            <value>java:comp/env/jndi/smbms</value>
        </property>         
    </bean>

    <!-- 配置SqlSessionFactoryBean -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 引用数据源组件 -->
        <property name="dataSource" ref="dataSource" />
        <!-- 引用MyBatis配置文件中的配置 -->
        <property name="configLocation" value="classpath:mybatis-config.xml" />
    </bean>
    <!-- 配置DAO -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.smbms.dao" />
    </bean>
 
    <context:component-scan base-package="cn.smbms.service" />
    <!-- 定义事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <tx:annotation-driven />

 
</beans>

编写测试类：

package cn.smbms.test.user;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import cn.smbms.pojo.User;
import cn.smbms.service.user.UserService;

public class UserTestServlet extends HttpServlet {

     private Logger logger = Logger.getLogger(UserTestServlet.class);
    /**
     * Constructor of the object.
     */
    public UserTestServlet() {
        super();
    }

    /**
     * Destruction of the servlet. <br>
     */
    public void destroy() {
        super.destroy(); // Just puts "destroy" string in log
        // Put your code here
    }

    /**
     * The doGet method of the servlet. <br>
     *
     * This method is called when a form has its tag value method equals to get.
     * 
     * @param request the request send by the client to the server
     * @param response the response send by the server to the client
     * @throws ServletException if an error occurred
     * @throws IOException if an error occurred
     */
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        ApplicationContext ctx = new ClassPathXmlApplicationContext(
                "applicationContext.xml");
        UserService userService = (UserService) ctx.getBean("userService");
        List<User> userList = new ArrayList<User>();
        User userCondition = new User();
        userCondition.setUserName("赵");
        userCondition.setUserRole(3);
        userList = userService.findUsersWithConditions(userCondition);

        for (User userResult : userList) {
            logger.debug("testGetUserList userCode: "
                    + userResult.getUserCode() + " and userName: "
                    + userResult.getUserName() + " and userRole: "
                    + userResult.getUserRole() + " and userRoleName: "
                    + userResult.getUserRoleName() + " and address: "
                    + userResult.getAddress());
        }
    }

    /**
     * The doPost method of the servlet. <br>
     *
     * This method is called when a form has its tag value method equals to post.
     * 
     * @param request the request send by the client to the server
     * @param response the response send by the server to the client
     * @throws ServletException if an error occurred
     * @throws IOException if an error occurred
     */
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
        out.println("<HTML>");
        out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
        out.println("  <BODY>");
        out.print("    This is ");
        out.print(this.getClass());
        out.println(", using the POST method");
        out.println("  </BODY>");
        out.println("</HTML>");
        out.flush();
        out.close();
    }

    /**
     * Initialization of the servlet. <br>
     *
     * @throws ServletException if an error occurs
     */
    public void init() throws ServletException {
        // Put your code here
    }

}

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" 
    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_3_0.xsd">
  <display-name></display-name>
  <servlet>
    <description>This is the description of my J2EE component</description>
    <display-name>This is the display name of my J2EE component</display-name>
    <servlet-name>UserTestServlet</servlet-name>
    <servlet-class>cn.smbms.test.user.UserTestServlet</servlet-class>
  </servlet>

  <servlet-mapping>
    <servlet-name>UserTestServlet</servlet-name>
    <url-pattern>/servlet/UserTestServlet</url-pattern>
  </servlet-mapping>    
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

输入运行地址：

 最终结果: