复习spring之JdbcTemplate

开发工具：
    Sql server 2005
    MyEclipse 6.0.1
开发步骤：
1.在数据库里建一个Test库，建一个Test表，表中含Id、Name、Description, 并insert 一些数据;
2.在MyEclipse 新建Web工程，命名为TestSpring_JdbcTemplate;
3.选择工程右击-->MyEclipse-->Add Spring Capabilities,勾选下些相关包;
4.在工程src里的applicationContext.xml根据个人情况修改
<?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="dataSource"
class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName"
value="com.microsoft.sqlserver.jdbc.SQLServerDriver">
</property>
<property name="url"
value="jdbc:sqlserver://localhost:1433;databaseName=Test">
</property>
<property name="username" value="sa"></property>
<property name="password" value="sa"></property>
</bean>
<bean id="jdbcTemplate"
class="org.springframework.jdbc.core.JdbcTemplate" abstract="false"
lazy-init="default" autowire="default" dependency-check="default">
<property name="dataSource">
<ref bean="dataSource" />
</property>
</bean>
</beans>

5.在工程里建包com.sailing.spring, 再建一个Bean类和含main()方法的类。

JdbcTemplateTest.java

package com.sailing.spring;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowCallbackHandler;
import org.springframework.jdbc.core.RowCountCallbackHandler;

/**
 * Test spring jdbc template
 * @author sailing
 */
public class JdbcTemplateTest {

	/**
	 * @param args
	 */
	@SuppressWarnings("unchecked")
	public static void main(String[] args) {
        Resource r = new ClassPathResource("applicationContext.xml");
        BeanFactory bf = new XmlBeanFactory(r);
        JdbcTemplate jt = (JdbcTemplate) bf.getBean("jdbcTemplate");
        String sql = "select * from Test";
        RowCountCallbackHandler rcch = new RowCountCallbackHandler();
        jt.query(sql, rcch);
        System.out.println("Rows=" + rcch.getRowCount()+ ",Count="+rcch.getColumnCount());
        String[] columnName = rcch.getColumnNames();
        for(String ss: columnName){
        	System.out.print(ss + ":");
        }
        List list = jt.queryForList(sql);
        System.out.println(list.size());
        Map map = new HashMap();
        for(int i=0;i<list.size();i++){
        	map = (Map) list.get(i);
        	System.out.println("Id="+map.get("Id")+",Name="+map.get("Name")+",Desc="+map.get("Description"));
        }
        map = null;
        
        /*** 3
        for(int i=0;i<list.size();i++){
        	System.out.println(list.get(i));
        }
        ***/
	}
}

6.在JdbcTemplateTest.java以java application运行。
7.查看结果。