XML parser's java.lang.LinkageError in maven

from: http://blog.nona.name/archives/143.html
ava.lang.LinkageError: loader constraints violated when linking org/w3c/dom/Document class

这个问题比较诡异。在JdK1.4以上使用maven test的时候
如果涉及到XML的解析就会出错。没搞明白怎么回事。

解决方法是设定：maven.junit.fork = true
“When using Java 1.4, it may be necessary to fork the JUnit tests to prevent XML parser issues. The default value is no. ”

See also http://maven.apache.org/faq.html#unit-test-14