Question

在Spring MVC应用程序中，表单数据验证未正确进行，并且org.springframework.validation.BeanPropertyBindingResult没有报告任何错误。

@RequestMapping(value="downloadfile", method=RequestMethod.POST)
    public String submitForm(@ModelAttribute("downloadMVbinder") 
                             @Valid DownloadFileVO downloadFileVO,
                             BindingResult bindingResult,
                             Model model) {
        System.out.println("Binding result object value ==> " + bindingResult.toString());

        ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
        Validator validator = factory.getValidator();
        Set<ConstraintViolation<DownloadFileVO>> constraintViolations = validator.validate(downloadFileVO);
        System.out.println("Constrain Violation object value ==>" + constraintViolations.toString());

        System.out.println("Model object value ==> " + model.toString());
        System.out.println("Model object value ==> " + downloadFileVO.toString());

        if (bindingResult.hasErrors()){
            return "DownloadfilePage";
        }

调试输出为

Binding result object value ==> org.springframework.validation.BeanPropertyBindingResult: 0 errors
Constrain Violation object value ==>[ConstraintViolationImpl{interpolatedMessage='length should be between 5 and 8 characters', propertyPath=password, rootBeanClass=class com.user1.test.model.DownloadFileVO, messageTemplate='length should be between 5 and 8 characters'}, ConstraintViolationImpl{interpolatedMessage='file length cannot be greater than 44 bytes length', propertyPath=fileName, rootBeanClass=class com.user1.test.model.DownloadFileVO, messageTemplate='file length cannot be greater than 44 bytes length'}, ConstraintViolationImpl{interpolatedMessage='length should be between 5 and 8 characters', propertyPath=userName, rootBeanClass=class com.user1.test.model.DownloadFileVO, messageTemplate='length should be between 5 and 8 characters'}]
Model object value ==> {downloadMVbinder=DownloadFormVO [ipAddres=NONEuserName=password=fileName=windowsPath=], org.springframework.validation.BindingResult.downloadMVbinder=org.springframework.validation.BeanPropertyBindingResult: 0 errors}
Model object value ==> DownloadFormVO [ipAddres=NONEuserName=password=fileName=windowsPath=]

我在查看帖子0 errors后更新了方法参数。仍然没有在bindingResult中得到错误。我还使用javax.validation.ConstraintViolation验证了模型对象，该对象捕获了违规行为。

您能帮忙解决为什么绑定结果对象中未显示错误的原因。

谢谢！

Answer 1

我已经使用SpringValidatorAdapter公开了JSR 303验证程序。答案基于帖子use of bindingresult和convert JSR-303 validation errors to bindingresult

@RequestMapping(value="downloadfile", method=RequestMethod.POST)

        public String submitForm(@ModelAttribute("downloadMVbinder") 
                             @Valid DownloadFileVO downloadFileVO,
                             BindingResult bindingResult,
                             Model model) {
        ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
        Validator validator = factory.getValidator();
        Set<ConstraintViolation<DownloadFileVO>> constraintViolations = validator.validate(downloadFileVO);
        SpringValidatorAdapter springValidator = new SpringValidatorAdapter(validator);
        springValidator.validate(downloadFileVO, bindingResult);

        if (bindingResult.hasErrors()){
            return "DownloadfilePage"; 
        }

org.springframework.validation.BeanPropertyBindingResult-没有错误

1 个答案: