1：导入坐标

  
      org.springframework
      spring-jdbc
      5.0.5.RELEASE
    
    
      org.springframework
      spring-tx
      5.0.5.RELEASE
    

2：创建数据库（Account表）和创建实体

public class Account {

    private String name;
    private double money;

    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{" +
                "name='" + name + '\'' +
                ", money=" + money +
                '}';
    }
}

3测试

 @Test
    //测试JdbcTemplate开发步骤
    public void test1() throws PropertyVetoException {
        //创建数据源对象
        ComboPooledDataSource dataSource = new ComboPooledDataSource();
        dataSource.setDriverClass("com.mysql.cj.jdbc.Driver");
        dataSource.setJdbcUrl("jdbc:mysql://localhost:3306/test1");
        dataSource.setUser("root");
        dataSource.setPassword("123456");

        JdbcTemplate jdbcTemplate = new JdbcTemplate();
        //设置数据源对象  知道数据库在哪
        jdbcTemplate.setDataSource(dataSource);
        //执行操作
        int row = jdbcTemplate.update("insert into account values(?,?)", "tom", 5000);
        System.out.println(row);
    }
}

 使用spring注入的方式来进行测试

1:创建applicationContext.xml文件

<?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
">

    
    <context:property-placeholder location="classpath:jdbc.properties"/>

    
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    bean>

    
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource" ref="dataSource"/>
    bean>

beans>

再抽取一下jdbc.properties文件

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/test1
jdbc.username=root
jdbc.password=123456

最后进行代码的编写和测试

    @Test
    //测试Spring产生jdbcTemplate对象
    public void test2() throws PropertyVetoException {
        ApplicationContext app = new ClassPathXmlApplicationContext("applicationContext.xml");
        JdbcTemplate jdbcTemplate = app.getBean(JdbcTemplate.class);
        int row = jdbcTemplate.update("insert into account values(?,?)", "lisi", 5000);
        System.out.println(row);
    }

 jdbcTemplate的crud测试

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class JdbcTemplateCRUDTest {
     //注入
    @Autowired
    private JdbcTemplate jdbcTemplate;

    //测试删除
    @Test
    public  void testDelete(){
        jdbcTemplate.update("delete from account where  name=?","tom1");
    }
   //测试更新
    @Test
    public void  testUpdate(){
        jdbcTemplate.update("update account set money=? where name=?", 10000,"lisi");
    }
    //测试查询全部 
    @Test
    public void testQueryAll(){
        List list = jdbcTemplate.query("select * from account", new BeanPropertyRowMapper(Account.class));
        System.out.println(list);
    }
     //测试查询一个
    @Test
    public void testQueryone(){
        Account account = jdbcTemplate.queryForObject("select * from account where name=?", new BeanPropertyRowMapper(Account.class),"lisi");
        System.out.println(account);

    }
    //测试查询数量
    @Test
    public void testQuerycount(){
        Long aLong = jdbcTemplate.queryForObject("select count(*) from account", long.class);
        System.out.println(aLong);

    }

}