JdbcTemplate的环境搭建

1.建立一个项目,导入jar包(ioc aop dao 连接池数据库驱动包)拷贝Spring容器对应的配置文件到src下

2.在配置文件中引入外部属性文件

3.配置数据源

4.配置JdbcTemplate

5.设置属性

6.测试

db.properties

1 driverClassName=oracle.jdbc.OracleDriver 2 url=jdbc:oracle:thin:@127.0.0.1:1521:xe 3 jdbc.username=[username] 4 password=[pwssword] 5 maxActive=50

db.properties

最终配置的结果

 1 <?xml version="1.0" encoding="UTF-8"?>  2 <beans xmlns="http://www.springframework.org/schema/beans"  3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  4     xmlns:context="http://www.springframework.org/schema/context"  5     xmlns:jdbc="http://www.springframework.org/schema/jdbc"  6     xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.1.xsd  7         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  8         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd">  9     <!-- 引入外部属性文件 --> 10     <context:property-placeholder location="classpath:db.properties"/> 11     <!-- 配置数据源 --> 12     <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"> 13         <property name="driverClassName" value="${driverClassName}"></property> 14         <property name="url" value="${url}"></property> 15         <property name="username" value="${jdbc.username}"></property> 16         <property name="password" value="${password}"></property> 17     </bean> 18     <!-- 配置JdbcTemplate --> 19     <bean id="jdbcTemlate" class="org.springframework.jdbc.core.JdbcTemplate"> 20         <!-- 设置属性 --> 21         <property name="dataSource" ref="dataSource"></property> 22     </bean> 23 </beans>

result

测试

 1 package com.xcz.test;  2   3   4 import java.sql.Connection;  5 import java.sql.SQLException;  6   7 import javax.sql.DataSource;  8   9 import org.junit.jupiter.api.Test; 10 import org.springframework.context.ApplicationContext; 11 import org.springframework.context.support.ClassPathXmlApplicationContext; 12  13 class JdbcTest { 14     //实例化IOC容器对象 15     ApplicationContext ioc = new ClassPathXmlApplicationContext("applicationContext.xml"); 16     @Test 17     void test() throws SQLException { 18         DataSource dataSource = (DataSource) ioc.getBean("dataSource"); 19         System.out.println(dataSource.getConnection()); 20     } 21 }

test

注意:在配置的时候,给db.properties里的username前面加上jdbc,为了区分,避免和系统用户冲突导致一直报用户名or密码错误

出现这个就说明配置成功

文章来源: JdbcTemplate的环境搭建

标签

jdbctemplate

jdbc

context

schema