如何使用stuts2在jsp中显示保存在耳朵外部的上传图像 [英] How show an uploaded image saved outside ear in a jsp using stuts2

问题描述

在我的项目中，用户上传保存在驱动器中上下文根之外的图像文件。我需要在jsp中显示这些图像。我用struts2。任何帮助将不胜感激。

解决方案

看看这个教程。我认为这正是您所寻找的。

编辑：

想法是告诉行动你想要什么样的形象。这样就完成了在请求中添加参数。例如，在示例中，它使用参数 imageId 但您可以更改此策略并使用其他内容，例如图像名称。然后你应该以这种方式调用动作（根据教程）：

  http：// localhost：8080 / myAppContext / ImageAction？imageId = darksouls.jpg 
  

另外，请记住@Dave Newton的评论非常好替代。请参阅此其他示例。

In my project users upload image files which are saved outside the context root in the drives. I need to show these images in a jsp. I use struts2. Any help will be appreciated.

解决方案

Take a look to this tutorial. I think that is exactly what you are looking for.

Edit:

The idea is to tell the action what image you want. That is done adding a parameter in the request. In the example, for instance, it is use the parameter imageId but you can change this strategy and use a different thing, like the image name. Then you should call the action in this way (according to the tutorial):

http://localhost:8080/myAppContext/ImageAction?imageId=darksouls.jpg

Also, take in mind the @Dave Newton's comment as a very good alternative. See this other example for that.

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