Spring JdbcTemplate基本使用—— 黑马

① 导入spring-jdbc和spring-tx坐标

    org.springframework
    spring-jdbc
    5.0.5.RELEASE




    org.springframework
    spring-tx
    5.0.5.RELEASE

② 创建数据库表和实体

用于测试的表（account），实体（name , money)

package com.zd.test;

import com.mchange.v2.c3p0.ComboPooledDataSource;
import org.junit.Test;
import org.springframework.jdbc.core.JdbcTemplate;

import java.beans.PropertyVetoException;

public class JdbcTemplateTest {
    @Test
    //测试 JdbcTemplate 开发步骤  (第一步：创建模板对象；第二步：创建数据源对象；第三步：数据库执行操作)
    public void test1() throws PropertyVetoException {
        //创建数据源对象
        ComboPooledDataSource dataSource = new ComboPooledDataSource();
        dataSource.setDriverClass("com.mysql.jdbc.Driver");
        dataSource.setJdbcUrl("jdbc:mysql://localhost:3306/test");
        dataSource.setUser("root");
        dataSource.setPassword("root");

        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);
    }
}

①配置文件（applicationContext.xml）

②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);
        //执行操作
        int row = jdbcTemplate.update("insert into account values(?,?)","tom",5000);
        System.out.println(row);
    }

jdbc.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/test
jdbc.username=root
jdbc.password=root

 applicationContext.xml

package com.zd.test;

import com.zd.domain.Account;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import java.util.List;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class JdbcTemplateCRUDTest {

    @Autowired
    private JdbcTemplate jdbcTemplate;

    @Test
    public void testQueryCount(){
        Long count = jdbcTemplate.queryForObject("select count(*) from account", Long.class);
        System.out.println(count);
    }

    @Test
    public void testQueryOne(){
        Account account = jdbcTemplate.queryForObject("select * from account where name=?", new BeanPropertyRowMapper(Account.class), "tom");
        System.out.println(account);
    }

    @Test
    public void testQueryAll(){
        List accountList = jdbcTemplate.query("select * from account", new BeanPropertyRowMapper(Account.class));
        System.out.println(accountList);
    }

    @Test
    public void testUpdate(){
        jdbcTemplate.update("update account set money=? where name=?",10000,"tom");
    }

    @Test
    public void testDelete(){
        jdbcTemplate.update("delete from account where name=?","tom");
    }

}