05_JDBC模板

Spring JdbcTemplate基本使用

JdbcTemplate概述

JdbcTemplate开发步骤

        //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);

或者

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

    <!--数据源对象-->
    <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>

    <!--jdbc模板对象-->
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource" ref="dataSource"/>
    </bean>

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

    @Autowired
    private JdbcTemplate jdbcTemplate;

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