在JSF中刷新上传的图像（显示） [英] Refresh an uploaded image in JSF(to display)

问题描述

我正在开发一个具有图片上传功能的JSF应用程序。我想显示上传的图片。上传工作正常，但当我删除上传的图片并上传新图片时，旧的图片会显示在浏览器中。我在浏览器中键入了图片的链接，但我得到了旧的。我使用相同的文件名，我不想改变它。我怎么能刷新它。 （没有Javascript）。我正在使用Glassfish服务器。 （重新应用应用程序我得到了新的图片，但它不是在线系统的解决方案;））
谢谢。

I'm developing a JSF application which has an image upload function. I'd like to display the uploaded image. The uploading works fine but when I delete the uploaded picture and upload a new one, the old one is displayed in the browser. I typed the link of the picture in the browser but I sill get the old one. I use the same file name and I would not like to change it. How could I refresh it. (without Javascript). I'm using Glassfish Server. (Redeplyoing the application I get the new picture but it isn't a solution for an online system ;)) Thank you.

推荐答案

重新申请申请表我得到了新照片

不要通过 getRealPath（）和consorts将它存储在deploy文件夹中。将它存储在部署文件夹中。

Don't store it in the deploy folder by getRealPath() and consorts. Store it outside the deploy folder.

• 上传的图片仅在刷新页面后可用

• Uploaded image only available after refreshing the page

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