除了Spring自带的Jar包，还要下载几个Jar包，这里我吐槽下CSDN，下个Jar包都要积分，真是想钱想疯了，其实可以Google得到
我把所有依赖的Jar包贴出来
MySql数据库的搭建和使用我就不说了，百度即可。现在的MySQL Workbench挺好用的
我们先来看下
普通的JDBC的写法
代码语言：javascript复制import org.junit.Test;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
public class JdbcDemo1 {
@Test
public void demo1() {
//创建连接池
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName("com.mysql.jdbc.Driver");
dataSource.setUrl("jdbc:mysql:///spring_database");
dataSource.setUsername("root");
dataSource.setPassword("1234");
//创建jdbc模板
JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
jdbcTemplate.update("insert into account values (null,?,?)", "大傻", 10000d);
}
}下面是SpringJDBC写法
代码语言：javascript复制public class Account {
private Integer id;
private String name;
private Double money;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Double getMoney() {
return money;
}
public void setMoney(Double money) {
this.money = money;
}
@Override
public String toString() {
return "Account{"
"id=" id
", name='" name '''
", money=" money
'}';
}
}配置文件
applicationContext6.xml
代码语言：javascript复制<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<!--引入属性文件-->
<!--第一种方式：通过bean标签（很少用）-->
<!-- <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:jdbc.properties"/>
</bean>-->
<!--第二种方式：通过context标签引入-->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!--配置Spring内置的连接池-->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<!--属性注入-->
<property name="driverClassName" value="${jdbc.driverClass}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!--配置DBCP连接池-->
<!-- <bean id="dataSource1" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${jdbc.driverClass}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>-->
<!--配置C3P0连接池-->
<!--<bean id="dataSource2" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driverClass}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>-->
<!--配置Spring的JDBC的模板-->
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>jdbc.properties
代码语言：javascript复制jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql:///spring_database
jdbc.username=root
jdbc.password=1234执行
代码语言：javascript复制import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import javax.annotation.Resource;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext6.xml")
public class SpringJDBC {
@Resource(name = "jdbcTemplate")
private JdbcTemplate jdbcTemplate;
@Test
//保存操作
public void demo() {
jdbcTemplate.update("insert into account value (null,?,?)", "大静", 20000d);
}
@Test
//修改操作
public void demo1() {
jdbcTemplate.update("update account set name = ?,money = ? where id = ?", "dbcp", 3000d, 4);
}
@Test
//删除操作
public void demo2() {
jdbcTemplate.update("delete from account where id = ?", 6);
}
@Test
//查询操作
public void demo3() {
String name = jdbcTemplate.queryForObject("select name from account where id = ?", String.class, 2);
System.out.println("name=" name);
}
@Test
//统计个数
public void demo4() {
Long count = jdbcTemplate.queryForObject("select count(*) from account", Long.class);
System.out.println("count=" count);
}
@Test
//封装到一个对象
public void demo5() {
Account account = jdbcTemplate.queryForObject("select * from account where id = ?", new MyRowMapper(), 5);
System.out.println(account);
}
@Test
//查询多条记录
public void demo6() {
List<Account> list = jdbcTemplate.query("select * from account", new MyRowMapper());
for (Account account : list) {
System.out.println(account);
}
}
class MyRowMapper implements RowMapper<Account> {
@Override
public Account mapRow(ResultSet resultSet, int i) throws SQLException {
Account account = new Account();
account.setId(resultSet.getInt("id"));
account.setName(resultSet.getString("name"));
account.setMoney(resultSet.getDouble("money"));
return account;
}
}
}Spring除了可以集成JDBC模板，还可以集成DBCP或者C3P0模板
执行结果就是在MySQL Workbench中查看
