Spring基础知识1：spring2.5与jdbc整合demo

好久没写jdbc的相关代码了，都忘得差不多了，一直都在用hibernate,这次学习spring，书中有关于jdbc整合的章节，并且讲了很多，于是决定再次写有关jdbc代码。整个写的非常简单，具体如下：

 

第一步：引入相关的jar包

第二步：在spring中配置好数据源(bean.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: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-2.5.xsd
           http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
      
      <context:annotation-config/>     
	 <context:component-scan base-package="spring.test"/>
	<!--  <aop:aspectj-autoproxy/>  -->
	 
	 <!-- mysql 5.0 -->
	 	 <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
	    <property name="driverClassName" value="org.gjt.mm.mysql.Driver"/>
	    <property name="url" value="jdbc:mysql://localhost:3306/link?useUnicode=true&amp;characterEncoding=gbk"/>
	    <property name="username" value="root"/>
	    <property name="password" value="hyj_lk"/>
	     <!-- 连接池启动时的初始值 -->
		 <property name="initialSize" value="1"/>
		 <!-- 连接池的最大值 -->
		 <property name="maxActive" value="500"/>
		 <!-- 最大空闲值.当经过一个高峰时间后，连接池可以慢慢将已经用不到的连接慢慢释放一部分，一直减少到maxIdle为止 -->
		 <property name="maxIdle" value="2"/>
		 <!--  最小空闲值.当空闲的连接数少于阀值时，连接池就会预申请去一些连接，以免洪峰来时来不及申请 -->
		 <property name="minIdle" value="1"/>
	  </bean>
</beans>

 

 

第三步：创建实体bean(说明：这里其实可以不要创建这个bean,为了方便还是创建了这个bean) Sort.java

//*******************************************************************//
//
//** 创建人:   Link
//
//** 描  述:   sort表实体bean -- 分类（栏目）表
//
//
//*******************************************************************//
package spring.test.bean;

import java.util.Date;

public class Sort {


	private int	id;				//标识（主键）
	private int	sid;			//分类ID（父ID）
	private String	title;		//标题
	private String	info;		//描述
	private String url;			//url
	private String imgurl;		//图片路径
	private int	isindex=0;		//是否在首页显示（0否，1是 默认0）
	private int	ishot=0;		//是否为热门（0否，1是 默认0）
	private int	isnew=0;		//是否为新（0否，1是 默认0）
	private int sortnum=0;		//排序号
	private long hits=0;		//点击次数
	private Date puttime=new Date();	//更新日期
	private int	property=0;		//属性：是否通过（0否，1是 默认0）
	
 
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public int getSid() {
		return sid;
	}
	public void setSid(int sid) {
		this.sid = sid;
	}
	public String getTitle() {
		return title;
	}
	public void setTitle(String title) {
		this.title = title;
	}
	public String getInfo() {
		return info;
	}
	public void setInfo(String info) {
		this.info = info;
	}
	public String getUrl() {
		return url;
	}
	public void setUrl(String url) {
		this.url = url;
	}
	public String getImgurl() {
		return imgurl;
	}
	public void setImgurl(String imgurl) {
		this.imgurl = imgurl;
	}
	public int getIsindex() {
		return isindex;
	}
	public void setIsindex(int isindex) {
		this.isindex = isindex;
	}
	public int getIshot() {
		return ishot;
	}
	public void setIshot(int ishot) {
		this.ishot = ishot;
	}
	public int getIsnew() {
		return isnew;
	}
	public void setIsnew(int isnew) {
		this.isnew = isnew;
	}
	
	public int getSortnum() {
		return sortnum;
	}
	public void setSortnum(int sortnum) {
		this.sortnum = sortnum;
	}
	
	public long getHits() {
		return hits;
	}
	public void setHits(long hits) {
		this.hits = hits;
	}
	public Date getPuttime() {
		return puttime;
	}
	public void setPuttime(Date puttime) {
		this.puttime = puttime;
	}
	public int getProperty() {
		return property;
	}
	public void setProperty(int property) {
		this.property = property;
	}	
}

 

 

 第四步：SortDao接口 SortDao.java

package spring.test.service;
import spring.test.bean.*;
public interface SortDao {

	public void insert(Sort sort);
	public void update(Sort sort);
	public void delete(int id);
	public Sort findById(int id);
}

 

第五步：SortDao接口的实现 SortDaoImp.java

package spring.test.service.impl;

import spring.test.bean.Sort;
import spring.test.service.SortDao;
import java.sql.*;

import javax.annotation.Resource;
import org.apache.commons.dbcp.BasicDataSource;

import org.springframework.stereotype.Service;
@Service
public class SortDaoImpl implements SortDao {

	@Resource(name="dataSource") private BasicDataSource dataSource;
	
	


	public void delete(int id) {
		System.out.println("delete OK");
	}

	public Sort findById(int id) {
		return null;
	}

	public void insert(Sort sort) {
		String sql="insert into tb_sort (sid,title,info) values(?,?,?)";
		Connection conn=null;
		try{
			conn=dataSource.getConnection();
			
			PreparedStatement ps=conn.prepareStatement(sql);
			
			ps.setInt(1, sort.getSid());//从1开始，这里不是从0开始，这里要特别注意，我当时不太记得了，调试了很久
			ps.setString(2, sort.getTitle());
			ps.setString(3, sort.getInfo());
			ps.executeUpdate();
			ps.close();
		}catch(SQLException e){
			throw new RuntimeException();
		}finally{
			if(conn!=null){
				try {
					conn.close();
				} catch (SQLException e) {
					System.out.println("关闭数据库连接失败！");
				}
			}
		}
	}

	public void update(Sort sort) {

	}

}

 

 

第六步：单元测试 SortDaoImplTest.java

 

package spring.test.service.junit;

import org.junit.BeforeClass;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import spring.test.bean.Sort;
import spring.test.service.SortDao;

public class SortDaoImplTest {

	@BeforeClass
	public static void setUpBeforeClass() throws Exception {
	}

	@Test
	public void testDelete() {

	}

	@Test
	public void testFindById() {
	}

	@Test
	public void testInsert() {
		ApplicationContext context= new ClassPathXmlApplicationContext("beans2.xml");
		SortDao sortDao=(SortDao)context.getBean("sortDaoImpl");
		//sortDao.delete(0);
		Sort sort=new Sort();
		sort.setSid(0);
		sort.setTitle("首页");
		sort.setInfo("首页，欢迎光临");
		sortDao.insert(sort);
		System.out.println("the sort save success!");
	}

	@Test
	public void testUpdate() {
	}

}