基于Springboot+微信小程序的校园二手交易平台小程序源码+数据库（毕设）.zip

package team.shixi.houtai.controller; import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper; import com.baomidou.mybatisplus.core.toolkit.StringUtils; import com.baomidou.mybatisplus.extension.plugins.pagination.Page; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.*; import team.shixi.houtai.common.Result; import team.shixi.houtai.common.ResultUtil; import team.shixi.houtai.entity.Admin; import team.shixi.houtai.entity.User; import team.shixi.houtai.service.UserService; @RestController @RequestMapping("/user") @CrossOrigin public class UserController { @Autowired private UserService userService; @PostMapping//新增数据 public Result<?> save(@RequestBody User user){ // if (user.getName() != null && user.getIdcard() != null){ //查询用户是否存在 LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>(); queryWrapper.eq(User::getUsername,user.getUsername()).or().eq(User::getIdcard,user.getIdcard()); User one = userService.getOne(queryWrapper); if (one != null){ //如果存在则直接返回失败 return Result.error("该身份信息已存在！"); } // } user.setStatus(1); userService.save(user); return Result.success(); } @PutMapping//更新数据 public Result<?> update(@RequestBody User user){ //查询用户是否存在 LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>(); queryWrapper.eq(User::getName,user.getName()); User one = userService.getOne(queryWrapper); if (one != null){ //如果存在则直接返回失败 return Result.error("该信息已被实名!"); } userService.updateById(user); return Result.success(); } @PutMapping("/{id}")//冻结用户 public Result<?> freeze(@PathVariable Long id){ User user = userService.getById(id); if (user.getStatus() == 1){ user.setStatus(0); }else { user.setStatus(1); } userService.updateById(user); return Result.success(); } @DeleteMapping("/{id}")//删除数据 public Result<?> delete(@PathVariable Long id){ userService.removeById(id); return Result.success(); } @GetMapping//查询数据 public Result<?> findPage(@RequestParam(defaultValue = "1") Integer pageNum, @RequestParam(defaultValue = "10") Integer pageSize, @RequestParam(defaultValue = "") String search){ Page<User> page = new Page<>(pageNum, pageSize); LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>(); queryWrapper.like((StringUtils.isNotBlank(search)),User::getName,search).or(). eq((StringUtils.isNotBlank(search)),User::getIdcard,search); Page<User> userPage = userService.page(page, queryWrapper); return ResultUtil.success(userPage); } }