Question

我推出一个ma木项目(X &Y)和i ve在项目X(pom file)的依附清单中添加了Y,进口Y到X. 和jar被安装到m2 后pos和玉米建筑中,没有编辑上的错误,但从现在起,它正在为Y.的班子wing一个NClassDefFoundError。

java.lang.NoClassDefFoundError: /nw_diagnosis/SocketExceptionHandler

Thanks Srikanth

Answer 1

您的X项目是“jar”项目,还是“war”项目?

If you build a jar, your Y project (I assume this one is a jar) is not included in the classpath of your X project, which is the normal behavior.

如果是,你要么不得不在班次中与Y.jar一起经营X项目,要么将X项目建设成“具有独立性的”项目。

Answer 2

I suspect this is a problem with an optional dependency in one of the artifacts that your application depends on.

无论如何,解决这一问题的总体办法是:

figure out what class is missing based on the exception message,
figure out what JAR file contains or should contain the missing class,
figure out what the maven group/artifact/version corresponds to the missing JAR, and
add the corresponding dependency to your project s POM file.

Answer 3

难道你是在指挥线上修建的,然后试图在Eclipse上运行? M2e 就是这样。清除并重建你们的所有项目,然后在ec子内进行。