相关疑难解决方法(0)

似乎javax.activation在Java 9中不推荐使用package .Oracle迁移指南建议--add-modules java.activation在JVM启动期间使用选项.

但是,我想避免这种情况并替换javax.activationpackage的类,因为它已被弃用,并将在以后的java版本中删除.我想,应该有某种替代方案javax.activation.如果有可用的话,它是什么？

这是代码:

      Session session = Session.getDefaultInstance(props, null);
      Store store = session.getStore("imaps");
      store.connect("imap.gmail.com", "****@gmail.com", "****");
      System.out.println(store);
      Folder folder = store.getDefaultFolder();
      folder = folder.getFolder("INBOX");
      folder.open(Folder.READ_ONLY);

      System.out.println("Message Count: "+folder.getMessageCount());
      System.out.println("Unread Message Count: "+folder.getUnreadMessageCount());


           Message[] messages = folder.getMessages();  --> here the code stops.

      FetchProfile fp = new FetchProfile();
      fp.add(FetchProfile.Item.ENVELOPE);
      folder.fetch(messages, fp);

      for (int i = 0; i< messages.length; i++) 
      { 
          System.out.println("From:"+ messages[i].getFrom()); 
          }

代码给出了以下的摘要并在显示的位置停止.

线程"main"中的异常java.lang.NoClassDefFoundError:com.google.code.com中的com.google.code.com.sun.mail.imap.MessageCache.getMessage(MessageCache.java:129)中的javax/activation/DataSource openReports.OpenReports.main中的.sun.mail.imap.IMAPFolder.getMessage(IMAPFolder.java:1394)

我正在尝试使用JDK-9为Intellij-Idea 2017.2.5(Webservices - >从wsdl生成代码...)生成wsdl的类存根

我得到这个异常,我想知道如何告诉intellij传递"--add-modules java.activation"来完成操作.

(我想我应该从命令行运行wsimport ...)

Exception in thread "main" java.lang.NoClassDefFoundError: javax/activation/DataSource
    at com.sun.xml.bind.v2.model.impl.RuntimeBuiltinLeafInfoImpl.<clinit>(RuntimeBuiltinLeafInfoImpl.java:461)
    at com.sun.xml.bind.v2.model.impl.RuntimeTypeInfoSetImpl.<init>(RuntimeTypeInfoSetImpl.java:65)
    at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.createTypeInfoSet(RuntimeModelBuilder.java:133)
    at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.createTypeInfoSet(RuntimeModelBuilder.java:85)
    at com.sun.xml.bind.v2.model.impl.ModelBuilder.<init>(ModelBuilder.java:156)
    at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.<init>(RuntimeModelBuilder.java:93)
    at com.sun.xml.bind.v2.runtime.JAXBContextImpl.getTypeInfoSet(JAXBContextImpl.java:455)
    at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:303)
    at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:142)
    at com.sun.xml.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(JAXBContextImpl.java:1174)
    at com.sun.tools.xjc.reader.xmlschema.bindinfo.BindInfo.getJAXBContext(BindInfo.java:335)
    at com.sun.tools.xjc.reader.internalizer.SCDBasedBindingSet.apply(SCDBasedBindingSet.java:235)
    at com.sun.tools.xjc.ModelLoader.createXSOM(ModelLoader.java:541)
    at com.sun.tools.xjc.api.impl.s2j.SchemaCompilerImpl.bind(SchemaCompilerImpl.java:269)
    at com.sun.tools.xjc.api.impl.s2j.SchemaCompilerImpl.bind(SchemaCompilerImpl.java:95)
    at com.sun.tools.ws.processor.modeler.wsdl.JAXBModelBuilder.bind(JAXBModelBuilder.java:142)
    at com.sun.tools.ws.processor.modeler.wsdl.WSDLModeler.buildJAXBModel(WSDLModeler.java:2244)
    at com.sun.tools.ws.processor.modeler.wsdl.WSDLModeler.internalBuildModel(WSDLModeler.java:191)
    at com.sun.tools.ws.processor.modeler.wsdl.WSDLModeler.buildModel(WSDLModeler.java:137)
    at com.sun.tools.ws.wscompile.WsimportTool.buildWsdlModel(WsimportTool.java:391)
    at com.sun.tools.ws.wscompile.WsimportTool.run(WsimportTool.java:204)
    at com.sun.tools.ws.wscompile.WsimportTool.run(WsimportTool.java:179)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at com.sun.tools.ws.Invoker.invoke(Invoker.java:135)
    at com.sun.tools.ws.WsImport.main(WsImport.java:57)
Caused by: java.lang.ClassNotFoundException: javax.activation.DataSource
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185)
    at …

我正在迁移java项目使用JDK8来使用JDK 11然后发生了javax激活相关的错误.遵循Oracle的迁移指南,我看到java.activation该模块已从JDK 11中删除.

之后,我建议添加第三方**activation-1.0.2.jar*但仍然发生了错误？请提出有关问题的建议？和你能告诉我有关Java 8和Tomcat 9.0.12.编译器的Eclipse 2018-09的迁移源代码的使用经验的Java 11(服务器(4.9.0)

这是详细错误:

Caused by: java.lang.NoClassDefFoundError: javax/activation/DataSource
    at java.base/java.lang.Class.getDeclaredMethods0(Native Method)
    at java.base/java.lang.Class.privateGetDeclaredMethods(Class.java:3167)
    at java.base/java.lang.Class.getDeclaredMethods(Class.java:2310)
    at org.apache.catalina.util.Introspection.getDeclaredMethods(Introspection.java:133)
    at org.apache.catalina.startup.WebAnnotationSet.loadMethodsAnnotation(WebAnnotationSet.java:285)
    at org.apache.catalina.startup.WebAnnotationSet.loadApplicationServletAnnotations(WebAnnotationSet.java:138)
    at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:69)
    at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:328)
    at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:768)
    at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:299)
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5007)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)