在Spring的 applicationContext.xml文件中配置数据源

内容如下：

<?xml version="1.0" encoding="UTF-8"?>
<!--
  - Middle tier application context definition for the image database.
  -->
<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: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/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

<!-- 数据源 -->
 <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
  <property name="driverClassName">
   <value>oracle.jdbc.driver.OracleDriver</value>
  </property>
  <property name="url">
   <value>jdbc:oracle:thin:@localhost:1521:orcldb_u2oracle</value>
  </property>
  <property name="username">
   <value>u2oracle</value>
  </property>
  <property name="password">
   <value>123456</value>
  </property>
 </bean>

 
</beans>

 

//后台注入代码以及使用JdbcTemplate对象操作数据库

/**
  * @author lenovo;
  * 2012-09-12 09:35
  * @param args
  */
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  
  ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");
  
  DataSource dt=(DataSource) context.getBean("dataSource");
  //使用数据源转
  JdbcTemplate template=new JdbcTemplate(dt) ;
  
  System.out.println("-----计算总记录数-------------");
  String sql="select count(*) from PERSON ";
  int count=template.queryForInt(sql);
  System.out.println("数量: "+count);
  
  System.out.println("-------查询所有数据-------");
  sql="select * from person";
  List list= template.queryForList(sql);
  
  for (Iterator iterator = list.iterator(); iterator.hasNext();) {
   Object object = (Object) iterator.next();
   System.out.println(object);
   
  }
  
  System.out.println("------使用参数---------");
  sql="select * from person where id=? ";
  Object vlaues[]={"101"};
  list=template.queryForList(sql, vlaues);
  for (Iterator iterator = list.iterator(); iterator.hasNext();) {
   Object object = (Object) iterator.next();
   System.out.println(object);
   
  }
  
  System.out.println("------更新数据--------");
  sql="update person set age=? where id=?";
  Object [] vals={20,"102"};
  int k=template.update(sql, vals);
  System.out.println(" 更新数据行数："+k);
  
  
  System.out.println("-------执行 创建表语句----------");
  sql="create table pptn (stcd varchar2(10),stnm varchar2(50))";
  template.execute(sql);
  System.out.println("创建表完毕!");
  
  

 }