Spring boot validation校验方法实例

 <dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-web</artifactId>
 </dependency>

@Data
@ApiModel("用户-表单对象")
public class SportsUserCreatForm{
 
 @ApiModelProperty(value="用户唯一标识",example = "0")
 @NotNull(groups = {Update.class})
 private long id;
 
 @ApiModelProperty(value = "所属机构唯一标识(冗余字段)", example = "0")
 private long organizationId;
 
 @ApiModelProperty("登录用户名")
 @NotBlank(message = "用户名不能为空")
 @Length(max = 10, message = "用户名最长为10位")
 private String loginName;
 
 @ApiModelProperty("密码")
 private String password;
 
 @ApiModelProperty("手机号")
 private String phone;
 
 @ApiModelProperty("邮箱")
 private String email;
 
 @ApiModelProperty("性别( 'MALE', 'FEMALE' )")
 @NotNull(message = "用户性别不能为空")
 private SportsUserEnumGender gander;
 
 @ApiModelProperty(value = "出生日期-13位时间戳",example = "0")
 private long birthday;
 
 @ApiModelProperty("身份证号")
 private String idNumber;
 
 @ApiModelProperty("用户昵称")
 private String nickname;
 
}

 @PostMapping("user/add")
 @RequiresAuthentication
 @ApiOperation("添加用户")
 public SportsUser addUser(@Validated @RequestBody SportsUserCreatForm user) throws Exception{
 return userBiz.addUser(user);
 }

@Slf4j
@Order(Ordered.HIGHEST_PRECEDENCE)
@RestControllerAdvice
public class GlobalExceptionAdvice {
 
 @ExceptionHandler(MethodArgumentNotValidException.class)
 @ResponseBody
 public ResponseEntity<Object> handleBeanValidation(HttpServletResponse res, MethodArgumentNotValidException e) throws Exception{
 res.setStatus(HttpStatus.OK.value());
 List<ObjectError> errors = e.getBindingResult().getAllErrors();
 ObjectError error = errors.get(0);// 如果有多个异常,这里只取第一个异常。没有必要把所有异常都抛出（错就是错，第一个校验都没通过，自然也轮不到第二个校验。）
 String json = JsonUtils.obj2json(error);
 Map map = JsonUtils.json2map(json);
 OkMessage result = new OkMessage();
 result.setMsg("请求参数错误"e.getBindingResult().getFieldError().getDefaultMessage() + "]");
 result.setCode("PARAM-000001");
 return new ResponseEntity<>(result, HttpStatus.OK);
 }
}

 
import javax.validation.groups.Default;
 
/**
 * 数据新增分组
 */
public interface Create extends Default {
 
}

 
import javax.validation.groups.Default;
 
/**
 * 数据更新分组
 */
public interface Update extends Default {
 
}

 @PostMapping("user/add")
 @RequiresAuthentication
 @ApiOperation("添加用户")
 public SportsUser addUser(@Validated(Create.class) @RequestBody SportsUserCreatForm user) throws Exception{
 return userBiz.addUser(user);
 }

常用的几个:
1.@NotNull：不能为null，但可以为empty(""," ","   ")
2.@NotEmpty：不能为null，而且长度必须大于0 (" ","  ")
3.@NotBlank：只能作用在String上，不能为null，而且调用trim()后，长度必须大于0("test")    即：必须有实际字符