1. 关于 @Validated 与Valid使用

一般加在类上,也可以加在方法上，或者方法里面，
如下面案列

@RestController
@RequestMapping("/receive")
@Validated
public class ReceiveController {



    /**
     * 分页查询
     *
     * @param request 查询参数
     * @return 收款列表
     */
    @GetMapping("/page")
    public PageInfo<PageReceiveVO> listByPage(@Valid ReceivePageRequest request) {
        request.setOperatorEnterpriseId(HeaderHelper.getEnterpriseId());
        request.setTenantId(HeaderHelper.getTenantId());
        return receiveService.listByPage(request);
    }

    /**
     * 新增
     *
     * @param receiveDTO 入参
     */
    @PostMapping("/save")
    public void save(@RequestBody @Valid ReceiveDTO receiveDTO) {
        receiveDTO.setTenantId(HeaderHelper.getTenantId());
        receiveDTO.setOperator(HeaderHelper.getCustomerId());
        receiveDTO.setOperatorName(HeaderHelper.getUserName());
        receiveDTO.setPayeeId(HeaderHelper.getCustomerId());
        receiveDTO.setPayeeName(HeaderHelper.getUserName());
        receiveDTO.setOperatorEnterpriseId(HeaderHelper.getEnterpriseId());
        if (receiveDTO.getId() == null) {
            receiveService.saveReceive(receiveDTO);
        } else {
            receiveService.updateReceive(receiveDTO);
        }
    }

    /**
     * 根据收款Id查询详情
     *
     * @param id 收款Id
     * @return ReceiveDetailVO 收款详情
     */
    @GetMapping("/detail")
    public ReceiveDetailVO detail(@NotNull(message = "收款Id不能为空") Long id) {
        return receiveService.detail(id);
    }

    /**
     * 认领操作
     *
     * @param claims 认领
     */
    @PostMapping("/claim")
    public void claim(@RequestBody @Valid @Size(min = 1, message = "认领记录最少需要一条") List<ClaimDTO> claims) {
        BaseParameter request = new BaseParameter();
        request.setTenantId(HeaderHelper.getTenantId());
        request.setOperator(HeaderHelper.getCustomerId());
        request.setOperatorName(HeaderHelper.getUserName());
        request.setOperatorEnterpriseId(HeaderHelper.getEnterpriseId());
        receiveService.claim(claims, request);
    }

如上面的案列所示:

1. Controller类上加@Validated 表示对该整个类进行校验
   

2. 入参不是对象，则直接使用校验注解即可，切记不要将@RequestParam与校验注解一起使用，会默认走@RequestParam注解，校验注解会失效
   
   下面这种，就是会导致校验注解失效
   

3. 入参是对象，且对象里面的属性也需要校验，以下两种都行
   
   

4. 入参是集合，只能使用@Valid，而不能使用Validated
   

5. 对象里面还有集合，需要加 @Valid注解