一，控制器

	@RequestMapping("/algorithmdepositoryinsert")
	@ResponseBody
	public String insert(@Valid @ModelAttribute Algorithmdepository ad){
		return  Result(iAlgorithmdepositoryService.save(ad));
	}

二，实体类

import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotNull;
import org.hibernate.validator.constraints.Length;


    /**
     * 专业
     */
    @NotNull
    private Integer major;

    /**
     * 所属单位
     */
    @NotBlank
    @Length(min=0, max=16)
    private String company;

三，maven依赖  和spring-boot版本

<dependency>
	    <groupId>org.hibernate</groupId>
	    <artifactId>hibernate-validator</artifactId>
	    <version>5.2.4.Final</version>
</dependency>


 <parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.3.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
  </parent>
  

四，自定义返回格式

import org.springframework.validation.BindException;
import org.springframework.validation.FieldError; 

  /**
	 * 自定义参数异常返回
	 */
	@ExceptionHandler(BindException.class)
	@ResponseBody
	public String bingExceptionHandler(BindException ex){
		FieldError  fe = ex.getFieldError();
		return ResultErr(fe.getField().concat(fe.getDefaultMessage()));
	}

    public static String ResultErr(String msg) {
		return returnStr(RESULT_CODE.FAIL.val(), msg, null);
	}

    private static String returnStr(String code, String msg, Object data) {
		ResResult bj = new ResResult();
		bj.setCode(code);
		bj.setMsg(msg);
		bj.setData(data);
		return JSONObject.toJSONString(bj);
	}