Java“无法加载Main-Class清单属性”在任何.jar文件上，即使我之前成功打开过的文件也是如此
[英]Java “Failed to load Main-Class manifest attribute” On a any .jar file, even those that I have succeed in opening before
问题描述
I have just began learning Java programming, I have created a simple game using Net-beans IDE. 
我刚刚开始学习Java编程，我已经使用Net-beans IDE创建了一个简单的游戏。 I wanted to show it to my friends, so I built it into a .jar. 我想把它展示给我的朋友，所以我将它内置到一个.jar中。 As per the readme that Net beans generates, I attempted to run the .jar with 根据Net Bean生成的自述文件，我尝试使用
java -jar "gameTest.jar"
However I get the error: "Failed to load Main-Class manifest attribute". 但是我得到了错误：“无法加载Main-Class清单属性”。
And now not only will this jar not run, others that I have previously run without issue are failing in the same way. 现在，不仅这个jar无法运行，而且我以前没有问题的其他容器也以相同的方式失败。 Fir example I have Minecraft, running off the .jar distribution so I can give it more memory trough a .bat file for HD textures. 例如，我有Minecraft，运行的是.jar发行版，因此我可以通过.bat文件为HD纹理分配更多的内存。 But it also generates this same error when I open it. 但是当我打开它时，它也会产生同样的错误。 And I know that there is nothing wrong with it. 我知道这没有错。
All the things I have found online about this error say that there is a problem with the manifest, however this can not be true for all the .jar files on my computer, especially those that I have already used multiple times in the past without issue. 我在网上找到的有关此错误的所有信息都表明清单存在问题，但是对于计算机上的所有.jar文件（尤其是我过去已经多次使用而没有问题的文件），这可能不是正确的。 There must be something in the OS or java instalation that is wrong. OS或Java安装中一定存在错误。
Win7 x64 Java 6 x32 JRE 6 Win7 x64 Java 6 x32 JRE 6
1 个解决方案
解决方案1
0 已采纳 2012-04-24 03:11:38
It seems that, for whatever reason, re-installing both JRE and JDK (in that order) has fixed the problem. 似乎由于某种原因，重新安装JRE和JDK（按此顺序）已解决了该问题。
No idea of the reason. 不知道原因。
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