@RequiredArgsConstructorpublicclassTestController{privatefinal TestService testService;@NonNullprivateTestMapper testMapper;@GetMapping("/testLambda")publicResulttestLambda(){LambdaQueryWrapper<Test>query=newLa
UpdateWrapper : Update 条件封装 AbstractLambdaWrapper : 使用Lambda 语法 LambdaQueryWrapper :用于Lambda语法使用的查询Wrapper LambdaUpdateWrapper : Lambda 更新封装Wrapper 2 查询 (1)例子: //查询用户名包含a,年龄在20-30之间,邮箱信息不为null public class WrapperTest { @Autowired private UserMapper userMapp...
LambdaQueryWrapper<Xuqiu> xuqiuwrapper = Wrappers.<Xuqiu>lambdaQuery(); xuqiuwrapper.isNull(Xuqiu::getPaiqiyuefen); xuqiuwrapper.orderByDesc(Xuqiu::getYouxianji,Xuqiu::getZhongyaochengdu,Xuqiu::getGongzuoliang); List<Xuqiu> xuqius = xuqiuMapper.selectList(xuqiuwrapper);...
QueryChainWrapper 是 MyBatis-Plus 提供的一个链式查询工具,可以简化复杂查询的编写。例如: QueryChainWrapper<User> wrapper = new QueryChainWrapper<>(userMapper); wrapper.select("id", "name", "age") .eq("gender", "male") .between("age", 20, 30) .inSql("city", "select city from city_...
LambdaQueryWrapper<Test> query =newLambdaQueryWrapper<>(); query.select(Test::getName).eq(Test::getId,14); List<Test> tests1 = testMapper.selectList(query); List<Test> tests2 = testMapper.selectList(Wrappers.<Test>lambdaQuery().eq(Test::getId,14)); ...
@Test public void testQueryWrapper8() { LambdaQueryWrapper<User> wrapper = Wrappers.lambdaQuery(); wrapper.select(User::getId,User::getName); wrapper.like(User::getName,"悟").eq(User::getEmail,"aa@qq.com"); List<User> userList = userMapper.selectList(wrapper); userList.forEach(System...
LambdaQueryWrapper<User> queryWrapper = Wrappers.lambdaQuery(); queryWrapper.like(User::getName, \"张\") .lt(User::getAge,30) .or(wrapper -> wrapper.eq(User::getGender, \"女\")); List<User> userList = userMapper.selectList(queryWrapper); ...
wrapper.in("实体类::查询字段", "包括的值,分割"); //相当于in wrapper.orderByAsc("实体类::查询字段"); //升序 wrapper.orderByDesc("实体类::查询字段");//降序 wrapper.ge("实体类::查询字段", "要比较的值"); //大于等于 wrapper.le("实体类::查询字段", "要比较的值"); //小于等于 ...
LambdaQueryWrapper<User> userWrapper = Wrappers.<User>lambdaQuery().ge(User::getAge, 30);LambdaQueryWrapper<Order> orderWrapper = Wrappers.<Order>lambdaQuery().inSql(Order::getUserId, "SELECT id FROM user", userWrapper);List<Order> orderList = orderDao.selectList(orderWrapper); ...
LambdaQueryWrapper<Test> query = new LambdaQueryWrapper<>(); query.select(Test::getName).eq(Test::getId,14); List<Test> tests1 = testMapper.selectList(query); List<Test> tests2 = testMapper.selectList(Wrappers.<Test>lambdaQuery().eq(Test::getId,14)); List<Test> tests3 = testMapper....