mabtis QueryWrapper获取不到泛型

// 通过 new QueryWrapper().lambda() 方法获取 Wrapper
QueryWrapper<User> queryWrapper = new QueryWrapper<User>().lambda();

// 使用 QueryWrapper 进行条件查询
List<User> userList = userMapper.selectList(queryWrapper);

// 通过 QueryWrapper 进行条件查询
QueryWrapper<User> queryWrapper = new QueryWrapper<User>().eq("age", 20);
List<User> userList = userMapper.selectList(queryWrapper);

// 通过 QueryWrapper 进行 Lambda 语法条件查询
QueryWrapper<User> queryWrapper = new QueryWrapper<User>().lambda().eq(User::getAge, 20);
List<User> userList = userMapper.selectList(queryWrapper);