It works fine when compiling project, but after exporting it to a runnable jar
and launching, it can't find external files and throws an error. What should I do?
将外部库添加到manifest.mf
:
Class-Path: . MyApp_lib/extlib.jar MyApp_lib/extlib2.jar ...
You could attempt building a fat jar
that includes all the jars. It contains a custom class loader to load the jars referenced externally by your project.
Try using http://fjep.sourceforge.net/ plugin to build a fat jar.
You can export a java project containing jars using the File -> Export -> Other -> One Jar Exporter
.
The jar thus exported works fine.
You have to keep all required jars in the classpath to run your jar. Run your jar like :
java -cp extlib/* -jar yourjar.jar
OR java -cp lib1.jar:lib2.jar:.. -jar yourjar.jar
Make sure that while building the jar, you include all the used libraries(include everything from class path). This issue will happen when you refer a external jar.
You can include a classpath variable in the jar's manifest file.
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