07-MyBatis_sql标签和include标签的使用

喜欢ヅ旅行 2022-09-17 12:23 290阅读 0赞

和

# 1. 源码下载: #

参看06-MyBatis_关联映射之多对一的下载

# 2. 功能: #

封装SQL语句, 调用

如:

id, name, address

3. 使用:

/* 
<sql id="mySQL">
    SELECT o.*, p.*
    FROM orders o 
      JOIN person p ON (p.personId=o.pid)
    WHERE o.orderId = 'O_00001'     
</sql>
<select id="selectOrderById2" parameterType="string" resultMap="orderMap">
    <include refid="mySQL"/>
</select>
*/  @Test public void testSelectOrderById2() throws Exception {
        SqlSession session = sqlSessionFactory.openSession();
        Order order = session.selectOne("com.hehe.mybatis.domain.Order.selectOrderById2", "O_00001");
        System.out.println(
                        order.getId() + "\t" +
                        order.getNumber() + "\t" +
                        order.getPrice() + "\t" +
                        order.getPerson().getId() + "\t" +
                        order.getPerson().getName() + "\t" +
                        order.getPerson().getAddress() + "\t" +
                        order.getPerson().getTel()
                );      
        session.close();
    }