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5.resultType结果集处理
FuriousPws002 edited this page Apr 12, 2024
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1 revision
代码分支:05-result-set-handler-with-result-type
用ResultMap对象封装resultType的class信息,解析mapper时存入到MappedStatement中,ResultSetWrapper则封装了包含ResultSet,以及结果集列名称的配置信息,ResultSetHandler中的handleResultSets方法作为解析ResultSet对象到POJO对象的入口,DefaultResultSetHandler是ResultSetHandler接口的默认实现,TypeHandler拥有了设置入参和获取指定列名称值的能力。
单元测试:
public class SqlSessionTest {
@Test
public void queryPOJOHandleTheResult() {
Configuration configuration = new Configuration();
configuration.setDataSource(DataSourceBuilderTest.build());
configuration.addMapper(UserMapper.class);
SqlSession sqlSession = new DefaultSqlSession(configuration);
UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
List<UserDO> list = userMapper.select();
Assert.assertNotNull(list);
UserDO userDO = list.get(0);
Assert.assertNotNull(userDO.getName());
Assert.assertNotNull(userDO.getNamex());
}
}