Spring 验证器错误代码无法自动解析

Spring validator error code is not auto resolve

消息源配置:

@Bean
public MessageSource messageSource() {
    ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
    messageSource.setBasenames("classpath:locale/normal/message", "classpath:locale/validation/message");
    messageSource.setDefaultEncoding("UTF-8");
    return messageSource;
}

Spring 验证者:

@Component
public class MyAccountValidator implements Validator {

    @Autowired
    MyAccountService myAccountService;

    @Override
    public boolean supports(Class<?> clazz) {       
        return MyAccount.class.isAssignableFrom(clazz);
    }

    @Override
    public void validate(Object target, Errors errors) {

        MyAccount myAccount = (MyAccount) target;

        MyAccount myAccountDb = myAccountService.findByUserId(myAccount.getUserId());

        if (myAccountDb == null) {
            errors.reject("myAccount.id.not_found");
        }
    }
}

message_en.properties:

myAccount.id.not_found=Your id is not found.

休眠验证器:

@NotNull(message="{myAccount.id.not_found}")
private String password;

Spring 控制器:

@RequestMapping(value = { "/validate" }, method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.TEXT_HTML_VALUE)
@ResponseBody
public String validate(Model model, @RequestBody @Valid MyAccount myAccount, BindingResult bindingResult, Locale locale) throws JsonProcessingException {

    System.out.println("myAccount user id = " + myAccount.getUserId());

    String msg = "";
    List<ObjectError> errors = bindingResult.getAllErrors();
    for (ObjectError error : errors ) {
        msg = msg + (error.getObjectName() + " - " + error.getCode() + " - " + error.getDefaultMessage()) + "\n";
    }                       

    return msg;
}

在我的控制器中,error.getDefaultMessage() 始终显示 Spring 验证程序错误代码 errors.reject("myAccount.id.not_found"); 的空值,无法自动解决。

当我尝试 hibernate 验证器时,正如您在上面的字段注释中看到的那样,它工作正常,@NotNull(message="{myAccount.id.not_found}") 可以在每个语言环境中自动完美解析。

我是否遗漏了任何配置?为什么 Spring 验证器错误代码无法自动运行?

PS: 我的I18N配置应该是正确的,我所有的JSP都能正确显示文字

我找了一整天,可能没有我的问题的答案......我总结了一些发现:

1) 阅读了很多教程,所有教程都在 JSP 视图中显示错误消息,因此他们可能会像这样工作:<form:errors path="*" cssClass="error" element="div"/>,错误代码将得到解决语言环境消息自动。但就我而言,我想通过 ajax 获取错误消息,因此,要解决控制器中的错误代码,我必须手动执行,不幸的是我必须注入 messagesourcelocale 在我的控制器中:

@RequestMapping(value = { "/validate" }, method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.TEXT_HTML_VALUE)
@ResponseBody
public String validate(Model model, @RequestBody @Valid MyAccount myAccount, BindingResult bindingResult, Locale locale) throws JsonProcessingException {

    System.out.println("myAccount user id = " + myAccount.getUserId());

    String msg = "";
    List<ObjectError> errors = bindingResult.getAllErrors();
    for (ObjectError error : errors ) {
        msg = msg + (messageSource.getMessage(error, locale)) + "\n";
    }                       

    return msg;
}

2) 阅读Resolving codes to error messages,解析器是将错误代码解析为一个或多个消息代码,它无助于将消息代码映射到messagesource。我误解了 error codemessage code 之间的术语。

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