<!--mybatis-plus-join--> <dependency> <groupId>com.github.yulichang</groupId> <artifactId...
mybatis plus join插件支持mybatis plus原生的插件 publicclassSampleTest{@AutowiredprivateUserMapperuserMapper;@TestpublicvoidtestSelect(){MPJLambdaWrapper<User>wrapper=JoinWrappers.lambda(User.class).selectAll(User.class)//查询user表全部字段.select(Address::getCity,Address::getAddress).leftJoin(Address.cl...
和mybatis-plus非常类似，除了LamdaWrapper外还提供了普通QueryWrapper的写法，改造上面的代码：public void getOrderSimple() { List<OrderDto> list = orderMapper.selectJoinList(OrderDto.class, new MPJQueryWrapper<Order>() .selectAll(Order.class) .select("t2.unit_price","t2.name as produ...
(UserDO::getId, 5); //连表查询 List<UserDTO> list = userMapper.selectJoinList(UserDTO.class, wrapper); //分页查询 (这个方法需要启用 mybatis plus 分页插件,或者用PageHelper调用上面那个方法) Page<UserDTO> listPage = userMapper.selectJoinPage(new Page<>(2, 10), UserDTO.class, wrapper);...
Mybatis-plus-join使用、mybatis连表 publicinterfacePlanDayMapper extends MPJBaseMapper<PwPlanDayPO>{ } MPJLambdaWrapper<PwPlanDayPO> wrapper = MPJWrappers.lambdaJoin(PwPlanDayPO.class); wrapper.leftJoin(SysStaffPO.class,SysStaffPO::getStaffId,PwPlanDayPO::getLeadCode)...
记录下Mybatis-Plus中条件构造器Wrapper的一些基本用法。 查询示例 表结构 CREATE TABLE `product` ( `id` int(11) unsigned NOT NULL AUTO_INCREMENT, `title` varchar(100) COLLATE utf8_unicode_ci DEFAULT NULL, `create_time` datetime DEFAULT CURRENT_TIMESTAMP, ...
和mybatis-plus非常类似,除了LamdaWrapper外还提供了普通QueryWrapper的写法,改造上面的代码: publicvoidgetOrderSimple() { List<OrderDto> list = orderMapper.selectJoinList(OrderDto.class,newMPJQueryWrapper<Order>() .selectAll(Order.class) .select("t2.unit_price","t2.name as product_name") ...
MPJLambdaWrapper用法 简单的三表查询 class test { @Resource private UserMapper userMapper; void testJoin() { //和Mybatis plus一致,MPJLambdaWrapper的泛型必须是主表的泛型,并且要用主表的Mapper来调用 MPJLambdaWrapper<UserDO> wrapper = new MPJLambdaWrapper<UserDO>() ...
和mybatis-plus非常类似,除了LamdaWrapper外还提供了普通QueryWrapper的写法,改造上面的代码: 代码语言:javascript 复制 publicvoidgetOrderSimple(){List<OrderDto>list=orderMapper.selectJoinList(OrderDto.class,newMPJQueryWrapper<Order>().selectAll(Order.class).select("t2.unit_price","t2.name as product_na...
Lambda形式用法(MPJLambdaWrapper) 简单的连表查询 class test { @Resource private UserMapper userMapper; void testJoin() { //和Mybatis plus一致,MPJLambdaWrapper的泛型必须是主表的泛型,并且要用主表的Mapper来调用 MPJLambdaWrapper<UserDO> wrapper = new MPJLambdaWrapper<UserDO>() .selectAll(UserDO....