在上传文件时超过文件maxFileSize限制

在上传文件时超过文件maxFileSize限制

本文介绍了Grails4-在上传文件时超过文件maxFileSize限制的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我想捕获此异常,而不是简单地将500退还给最终用户,这是一个糟糕的体验,至少在我的应用程序中.目的是使用户返回到表单页面,并提供一些反馈,以便他们再次尝试.

I would like to catch this exception rather than simply returning a 500 to the end users which is a poor experience, at least in my application.The intention would be to return the user back to the form page with some feedback for them to try again.

当前的经验是将用户退回500,并将以下内容打印到日志中;

The current experience is to throw the user back a 500 and the following is printed to the logs;

Caused by: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (157552) exceeds the configured maximum (1024)

推荐答案

起点而对@ james-kleeh进行信用;

Crediting @james-kleeh for this head start;

但是当我扩展StandardServletMultipartResolver实现时,我只能在Grails 4.0.0.M2上使用它,这是默认设置.然后,可以继续从config(yaml)解析maxFileSize限制.

But I could only get this working on Grails 4.0.0.M2 when I extend the StandardServletMultipartResolver implementation which is what is used as default. Then the maxFileSize limits continue to be resolved from config (yaml).

public class MyMultipartResolver extends StandardServletMultipartResolver {

    static final String FILE_SIZE_EXCEEDED_ERROR = "fileSizeExceeded"

    public MultipartHttpServletRequest resolveMultipart(HttpServletRequest request) {
        try {
            return super.resolveMultipart(request)
        } catch (MaxUploadSizeExceededException e) {
            request.setAttribute(FILE_SIZE_EXCEEDED_ERROR, true)
            return new DefaultMultipartHttpServletRequest(request, new LinkedMultiValueMap<String, MultipartFile>(), new LinkedHashMap<String, String[]>(), new LinkedHashMap<String, String>());
        }
    }
}

在resources.groovy中具有以下内容;

With the following in resources.groovy;

// catch exception when max file size is exceeded
multipartResolver(MyMultipartResolver)

您随后需要检查控制器中的 FILE_SIZE_EXCEEDED_ERROR 属性并进行相应的处理.

You need to subsequently check for the FILE_SIZE_EXCEEDED_ERROR attribute in the controller and handle accordingly.

这篇关于Grails4-在上传文件时超过文件maxFileSize限制的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

08-24 05:08