Spring Boot REST @RequestParam未经过验证 [英] Spring Boot REST @RequestParam not being Validated

问题描述

我在网上尝试了很多例子，但是无法让Spring验证我的查询字符串参数。它似乎没有执行REGEX / fail。

I have tried a number of examples from the net and cannot get Spring to validate my query string parameter. It doesn't seem execute the REGEX / fail.

package my.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import javax.validation.Valid;
import javax.validation.constraints.Pattern;

import static org.springframework.web.bind.annotation.RequestMethod.GET;

@RestController
public class MyController {

    private static final String VALIDATION_REGEX = "^[0-9]+(,[0-9]+)*$";

    @RequestMapping(value = "/my/{id}", method = GET)
    public myResonseObject getMyParams(@PathVariable("id") String id,
                                       @Valid @Pattern(regexp = VALIDATION_REGEX) 
                                       @RequestParam(value = "myparam", required = true) String myParam) {
         // Do Stuff!
    }

}

当前行为

PASS - /my/1?myparam=1
PASS - /my/1?myparam=1,2,3
PASS - /my/1?myparam=
PASS - /my/1?myparam=1,bob

所需行为

PASS - /my/1?myparam=1
PASS - /my/1?myparam=1,2,3
FAIL - /my/1?myparam=
FAIL - /my/1?myparam=1,bob

谢谢

推荐答案

您需要将@Validated添加到您的班级，如下所示：

You need add @Validated to your class like this:

@RestController
@Validated
class Controller {
  // ...
}

UPDATE ：

您需要正确配置它..将此bean添加到您的上下文中：

you need to configure it properly.. add this bean to your context:

@Bean
 public MethodValidationPostProcessor methodValidationPostProcessor() {
      return new MethodValidationPostProcessor();
 }

处理异常的示例：

@ControllerAdvice
@Component
public class GlobalExceptionHandler {
    @ExceptionHandler
    @ResponseBody
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public Map handle(MethodArgumentNotValidException exception) {
        return error(exception.getBindingResult().getFieldErrors()
                .stream()
                .map(FieldError::getDefaultMessage)
                .collect(Collectors.toList()));
    }


    @ExceptionHandler
    @ResponseBody
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public Map handle(ConstraintViolationException exception) {
        return error(exception.getConstraintViolations()
                .stream()
                .map(ConstraintViolation::getMessage)
                .collect(Collectors.toList()));
    }

    private Map error(Object message) {
        return Collections.singletonMap("error", message);
    }
}

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