JAR文件ADD DIRECTORY ENTRIES导出jar时的Eclipse选项 [英] Jar file ADD DIRECTORY ENTRIES Eclipse option while exporting jar

问题描述

实际上，我遇到了从jar文件引用类文件的场景。
我的意思是说我有一个后端java项目说ABC中有application-context.xml文件。

现在我创建了ABC项目的jar文件，在一个基于Web的应用程序中使用。

这里我面临一个问题，豆没有获得Autowired并且知道问题是
当我导出jar使用Eclipse的ABC项目文件，我没有选择
ADD DIRECTORY ENTRIES复选框，稍后我做了所有工作。

只是为了看看有什么变化已经通过在jar文件中检查这个框，使所有的工作，

所以我创建了2个jar文件，其中一个ADD DIRECTORY ENTRIES被检查，一个没有选中，然后我比较了两个罐子比较，发现没有任何区别。

有人可以解释一下ADD DIRECTORY ENTRIES是什么？

我知道是应该添加完整的结构而不是像
com / company / project / MyJavaFile.class

com / company /

com / company / project /

com / company / project / MyJavaFile.class

如果我错了，请更正我。

解决方案

如果需要使用class.getResource（）方法获取，您应该在创建jar文件时启用添加目录条目 jar文件中特定目录的URI。您可能想要这样做的原因是为您的资源文件夹保留一个URI。

如果您只使用class.getResource（）获取特定文件的URI [而不是目录]，那么如果离开添加目录条目，您将会很好。

I don't whether I am asking correct question or not but want to clear my doubt.

Actually I came across the scenario of referring class files from jar file. I mean to say I have one backend java project say ABC with application-context.xml file in it.

Now I created jar file of ABC project and used in one web based application.

Here I am facing a problem of beans not getting Autowired and came to know the problem was, When I export the jar file of ABC project using Eclipse, I have not selected "ADD DIRECTORY ENTRIES" checkbox which later on I did and all worked.

just to see what changes has been made by checking this box in a jar file so that all worked,

So I created 2 jar files one with "ADD DIRECTORY ENTRIES" checked and one with unchecked, then I compared both jar using beyond compare and found there is no difference at all.

Can someone explain me what exactly "ADD DIRECTORY ENTRIES" does?

what I know is it should add complete structure instead of single path like com/company/project/MyJavaFile.class

com/company/

com/company/project/

com/company/project/MyJavaFile.class

Please correct me if I am wrong.

解决方案

You should enable "Add directory entries" when creating jar files if you need to use class.getResource() method to get the URI of a particular directory inside your jar file. The reason why you may want to do this is to hold a URI to your "resource" folder for example.

If you only use class.getResource() to get the URI of a specific file [and not a directory] then you will be fine if you leave the "Add directory entries" off.

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