将Web服务URL从http更改为https后，DocumentBuilder.parse（）引发java.net.UnknownHostException

Question

以前，我们的应用程序中包含以下代码，该代码用于获取所需的数据。 我们只是通过传递用户名，密码和搜索参数（DEA编号）来形成Web服务URL来读取必填字段。 也可以直接从浏览器中点击相同的URL（带有参数）以查看结果：

 {    DocumentBuilderFactory factory = 
      DocumentBuilderFactory.newInstance();

      DocumentBuilder parser = factory.newDocumentBuilder();

      System.setProperty("http.proxyHost", getProxyHost());
      System.setProperty("http.proxyPort", getProxyPort());

      System.out.println("Before URL formation");

      URL url = new URL(
        "http://www.deanumber.com/Websvc/deaWebsvc.asmx/GetQuery?UserName=" + getDeaUsername() + "&Password=" + getDeaPassword() + "&DEA=" + 
        deaNumber + 
        "&BAC=&BASC=&ExpirationDate=&Company=&Zip=&State=&PI=&MaxRows=");

      System.out.println("After URL formation");
      System.out.println("URL formed is: "+url);
      Document document = null;
      try {

        System.out.println("toExternalForm");

        String strURL = url.toExternalForm();

        System.out.println("toExternalForm done: "+strURL);

        **document = parser.parse(strURL);** //This is causing exception
          }
      catch (SAXParseException spe)
         {  System.out.println("Inside SAXParseException");
            spe.printStackTrace();
         }
    }

现在，Web服务URL已从http更改为https，其余情况相同。 新的URL也可以在浏览器中使用。 而且，即使我在浏览器中输入http URL，它也会自动重定向到https并显示数据。 但是，上面的代码没有做到这一点，并且给出了以下异常：java.net.ProtocolException：不支持的协议：https'

因此，我将代码更改为在URL中使用https，但是现在出现了一个新的异常-java.net.UnknownHostException。 从控制台日志中，我可以看到异常发生在==> document = parser.parse（strURL）处 。 从上面的代码中可以看到，解析器是DocumentBuilder对象的参考变量。 我在下面粘贴完整的堆栈跟踪。

UnknownHostException的完整堆栈跟踪：

{java.net.UnknownHostException: www.deanumber.com
[2017-23-28 08:23,     0]ERROR[[ACTIVE] ExecuteThread: '6' for queue: 'weblogic.kernel.Default (self-tuning)'](DeaFetcher.java:123) - Exception in DeaFetcher.getDeaFromUrl java.net.UnknownHostException: www.deanumber.com
            at java.net.InetAddress.getAllByName0(InetAddress.java:1250)
            at java.net.InetAddress.getAllByName(InetAddress.java:1162)
            at java.net.InetAddress.getAllByName(InetAddress.java:1098)
            at weblogic.net.http.HttpsClient.openServer(HttpsClient.java:265)
            at weblogic.net.http.HttpsClient.openServer(HttpsClient.java:350)
            at weblogic.net.http.HttpsClient.New(HttpsClient.java:553)
            at weblogic.net.http.HttpsURLConnection.getHttpClient(HttpsURLConnection.java:332)
            at weblogic.net.http.HttpURLConnection.getInputStream(HttpURLConnection.java:711)
            at weblogic.net.http.SOAPHttpsURLConnection.getInputStream(SOAPHttpsURLConnection.java:37)
            at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:643)
            at com.sun.org.apache.xerces.internal.impl.XMLVersionDetector.determineDocVersion(XMLVersionDetector.java:189)
            at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:812)
            at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
            at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
            at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:243)
            at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:347)
            at weblogic.xml.jaxp.RegistryDocumentBuilder.parse(RegistryDocumentBuilder.java:163)
            at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:177)
            at com.company.project.service.DeaFetcher.fetchDeaFromUrl(DeaFetcher.java:358)
            at com.company.project.service.DeaFetcher.fetchDeas(DeaFetcher.java:330)
            at com.company.project.service.DeaFetcher.fetchDeas(DeaFetcher.java:239)
            at com.company.project.service.DeaFetcher.fetchDeaMastersList(DeaFetcher.java:46)
            at com.company.project.service.DeaFetcher$$FastClassByCGLIB$$8f6b7575.invoke(<generated>)
            at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191)
            at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:695)
            at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:144)
            at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:107)
            at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)
            at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:630)
            at com.company.project.service.DeaFetcher$$EnhancerByCGLIB$$a5bf2c5a.fetchDeaMastersList(<generated>)
            at com.company.project.web.MainFormController.onSubmit(EntryFormController.java:137)
            at org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:267)
            at org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:250)
            at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
            at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
            at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:857)
            at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:792)
            at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:475)
            at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:440)
            at javax.servlet.http.HttpServlet.service(HttpServlet.java:751)
            at javax.servlet.http.HttpServlet.service(HttpServlet.java:844)
            at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:280)
            at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:254)
            at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:136)
            at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:346)
            at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:243)
            at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3432)
            at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3402)
            at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
            at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
            at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:57)
            at weblogic.servlet.internal.WebAppServletContext.doSecuredExecute(WebAppServletContext.java:2285)
            at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2201)
            at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2179)
            at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1572)
            at weblogic.servlet.provider.ContainerSupportProviderImpl$WlsRequestExecutor.run(ContainerSupportProviderImpl.java:255)
            at weblogic.work.ExecuteThread.execute(ExecuteThread.java:311)
            at weblogic.work.ExecuteThread.run(ExecuteThread.java:263)
}

Answer 1

看来您仍在尝试使用相同的URL调用Web服务，但是这次使用URL中的HTTPS。 如果是这种情况，那么您可能需要使用由Web服务的WSDL生成的客户端代码以及适当的身份验证代码来调用Web服务。

如果您使用从WSDL生成的有效客户端代码来调用Web服务，那么请在您的问题中提供客户端代码详细信息，以查看其在此尝试执行的操作。

Answer 2

您在具有WSDL的注释中编写代码，然后让eclipse为此生成客户端，例如以下示例： 如何使用Eclipse将wsdl转换为java类？ （或在互联网上搜索“从wsdl生成客户端”）