NoClassDefFoundError when using ant

Question

I am using a project which have declared own ant result formatted.When i build the framework code it builds fine.But when i try to generate the report using that formatter i get java.lang.NoClassDefFoundError error and build fails

xyz\build.xml:391: java.lang.NoClassDefFoundError: org/apache/log4j/
Logger

I have the log4j jar in the lib directory when am building the project.Do i need to include some and runtime environment?

If yes how?What else can be the problem?

Answer 1

您必须将jar文件显式添加到运行时类路径中（就像处理类文件目录一样）。