使用Apache CXF生成Web服务时出现NullPointerException

我想创建一个Web服务并使用Apache CXF 2.7.12。我的jdk版本是1.8.0_20。在eclipse中生成WSDL文件时会遇到此异常。

I want to create a web service and using Apache CXF 2.7.12. My jdk version is 1.8.0_20. While generating WSDL file in eclipse got this exception.

java.lang.NullPointerException
at org.apache.cxf.common.util.Compiler.useJava6Compiler(Compiler.java:187)
at org.apache.cxf.common.util.Compiler.compileFiles(Compiler.java:141)
at org.apache.cxf.tools.java2wsdl.generator.wsdl11.BeanGenerator.generateAndCompile(BeanGenerator.java:91)
at org.apache.cxf.tools.java2wsdl.generator.wsdl11.BeanGenerator.generate(BeanGenerator.java:58)
at org.apache.cxf.tools.java2wsdl.generator.wsdl11.BeanGenerator.generate(BeanGenerator.java:35)
at org.apache.cxf.tools.java2wsdl.processor.JavaToWSDLProcessor.generate(JavaToWSDLProcessor.java:156)
at org.apache.cxf.tools.java2wsdl.processor.JavaToWSDLProcessor.process(JavaToWSDLProcessor.java:118)
at org.apache.cxf.tools.java2ws.JavaToWSContainer.processWSDL(JavaToWSContainer.java:110)
at org.apache.cxf.tools.java2ws.JavaToWSContainer.execute(JavaToWSContainer.java:75)
at org.apache.cxf.tools.common.toolspec.ToolRunner.runTool(ToolRunner.java:103)
at org.apache.cxf.tools.common.toolspec.ToolRunner.runTool(ToolRunner.java:58)
at org.apache.cxf.tools.common.toolspec.ToolRunner.runTool(ToolRunner.java:40)
at org.apache.cxf.tools.java2ws.JavaToWS.run(JavaToWS.java:77)
at org.apache.cxf.tools.java2ws.JavaToWS.main(JavaToWS.java:45)

我不知道与Java6Compiler相关的问题。

I have no idea about the problem related with Java6Compiler.