我的.jar文件在java中不起作用

Question

I have created an application and it is working correctly when I am executing it through NETBEANS.

After that I had clicked on "Clean and Build" to build a SiteScrapper.jar file. Now when I am executing it through command prompt by invoking the following dos command:

java -jar "SiteScrapper.jar"

I am getting the following exception

sitescrapper.Main class not found

My Main class is located in the following package

com.innoConsulting.sitescrapper

Answer 1

您需要检查清单文件中Main-Class的值。

Answer 2

您的JAR需要一个META-INF / manifest.mf文件来说明主类的位置。

Answer 3

You need to include a manifest file. See here for a quick explanation: http://www.skylit.com/javamethods/faqs/createjar.html

Answer 4

In Netbeans either run the project (and it will ask you for the Main-Class) or go into the Project | Properties | Run and select the Main-Class.

Then do another clean and build and it will generate the JAR file with the appropriate manifest file (with the Main-Class: set).

Answer 5

Make sure that the jar file is 'executable'. The Manifest needs to have the Main-Class attribute.