javax.xml.transform.TransformerFactoryConfigurationError: Provider org.apache.xalan.processor.TransformerFactoryImpl Could not be instantiated: java.lang.NullPointerException javax.xml.transform.TransformerFactory.newInstance(UnkNown Source) org.codehaus.xfire.wsdl11.builder.SchemaSerializer.writeXml(SchemaSerializer.java:46) org.codehaus.xfire.wsdl11.builder.SchemaSerializer.marshall(SchemaSerializer.java:35) com.ibm.wsdl.xml.WSDLWriterImpl.printExtensibilityElements(UnkNown Source) com.ibm.wsdl.xml.WSDLWriterImpl.printTypes(UnkNown Source) com.ibm.wsdl.xml.WSDLWriterImpl.printDeFinition(UnkNown Source) com.ibm.wsdl.xml.WSDLWriterImpl.writeWSDL(UnkNown Source) com.ibm.wsdl.xml.WSDLWriterImpl.writeWSDL(UnkNown Source) org.codehaus.xfire.wsdl11.builder.WSDLBuilder.write(WSDLBuilder.java:182) org.codehaus.xfire.wsdl11.builder.WSDLBuilderAdapter.write(WSDLBuilderAdapter.java:40) org.codehaus.xfire.DefaultXFire.generateWSDL(DefaultXFire.java:104) org.codehaus.xfire.transport.http.XFireServletController.generateWSDL(XFireServletController.java:380) org.codehaus.xfire.transport.http.XFireServletController.doService(XFireServletController.java:125) org.codehaus.xfire.transport.http.XFireServlet.doGet(XFireServlet.java:107) javax.servlet.http.HttpServlet.service(HttpServlet.java:690) javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
这是由于jdk与tomcat之间的关于TransformerFactoryImpl类的冲突造成。
所以解决方法是：删除Tomcat目录下的【common\endorsed】文件夹中的那两个jar包，重新启动Tomcat就好了
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