Spring参数校验 @Validated @RequestParam

直接上才艺，代码可以Copy进行测试，楼下还有效果图

import java.util.HashMap;
import java.util.Set;

import javax.servlet.http.HttpServletRequest;
import javax.validation.ConstraintViolation;
import javax.validation.ConstraintViolationException;
import javax.validation.constraints.Max;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Pattern;

import org.hibernate.validator.constraints.Length;
import org.springframework.validation.BindException;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import lombok.Data;
import lombok.extern.slf4j.Slf4j;

@Slf4j
@RestController
@RestControllerAdvice//捕获接口异常
@RequestMapping("test")
@Validated//直接使用方法接受参数验证 @Validated 加在接口类上
public class ValidationController {

	/**校验日期正则*/
	private final static String REGEXP = "([0-9]{3}[1-9]|[0-9]{2}[1-9][0-9]{1}|[0-9]{1}[1-9][0-9]{2}|[1-9][0-9]{3})-(((0[13578]|1[02])-(0[1-9]|[12][0-9]|3[01]))|((0[469]|11)-(0[1-9]|[12][0-9]|30))|(02-(0[1-9]|[1][0-9]|2[0-8])))";

	/**
	 * 直接用方法进行接收参数
 @Validated 加在接口类上
	 * @param username
	 * @param password
	 * @param age
	 * @param date
	 * @param request
	 * @return
	 */
	@RequestMapping("t1")
	public Object t1(@NotNull(message = "用户名为空") @Length(max = 8, min = 5, message = "登入账号5~8位") String username,

			@NotBlank(message = "密码为空") @Length(max = 8, min = 5, message = "密码长度5~8位") String password,

			@Max(value = 99, message = "最大为99") @Min(value = 18, message = "最小为18") Integer age,

			@Pattern(regexp = REGEXP, message = "日期格式yyyy-MM-dd") String date, HttpServletRequest request) {

		log.info("t1.ok");//参数验证通过
		return request.getParameterMap();
	}

	/**
	 * 用对象方式接受参数
	 * @param user
	 * @return
	 */
	@RequestMapping("t2")
	public Object t2(@Validated User user) {
		log.info("t2.ok");//参数验证通过
		return user;
	}

	@Data
	static class User {
		@NotNull(message = "用户名为空")
		@Length(max = 8, min = 5, message = "登入账号5~8位")
		String username;

		@NotBlank(message = "密码为空")
		@Length(max = 8, min = 5, message = "密码长度5~8位")
		String password;

		@Max(value = 99, message = "最大为99")
		@Min(value = 18, message = "最小为18")
		Integer age;

		@Pattern(regexp = REGEXP, message = "日期格式yyyy-MM-dd")
		String date;
	}

	/**
	 * 对象方式参数校验失败- t2 方法验证失败进入
	 * @param exception
	 * @return
	 */
	@ExceptionHandler(value = BindException.class)
	public Object hadeConstraintViolationException(BindException exception) {
		log.info("BindException .... ");
		HashMap errors = new HashMap<>();
		exception.getFieldErrors().forEach(f->{
			
			errors.put(f.getField(),f.getDefaultMessage() );
		});
		return errors;
	}
	
	/**
	 *  直接用方法进行接收参数校验失败- t1 方法验证失败进入
	 * @param exception
	 * @return
	 */
	@ExceptionHandler(value = ConstraintViolationException.class)
	public Object hadeConstraintViolationException(ConstraintViolationException exception) {
		log.info("ConstraintViolationException .... ");
		HashMap errors = new HashMap<>();
		Set> violations = exception.getConstraintViolations();
		String message = exception.getMessage();
		System.err.println("message = " + message);
		violations.forEach(c -> {
			String val = c.getMessage();
			String key = c.getPropertyPath().toString();
			errors.put(key, val);
			System.err.println(c);
		});
		return errors;
	}

}

效果图