Fórum Como ler site (código HTML) externo ao meu domínio com as classes do JDK (ou seja, sem utilizar o HttpClient da apache, ou recurso externo ao JDK) #470593

private String getPhoneCompany(String phoneNumber) throws RuntimeException{
    String response="";
    URL url=null;
    //
    try{
      url=new URL("http://www.zipmail.com.br");
    }
    catch(Exception e){
      throw new RuntimeException("Invalid/Incorrect URL.",e);
    }
    //
    HttpURLConnection urlConnection=null;
    try{
      urlConnection=(HttpURLConnection)url.openConnection();
      urlConnection.setDoInput(true);
      urlConnection.setDoOutput(true);
      urlConnection.setUseCaches(true);
      urlConnection.setReadTimeout(10000);
      urlConnection.connect();
    }
    catch(Exception e){
      throw new RuntimeException("Error connecting to the address ["+url.toString()+"].",e);
    }    
    //
    try{
      BufferedReader reader=new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));  
      String line=null;  
      while((line=reader.readLine())!=null){  
        response+=line;
      }  
      reader.close();
    }
    catch(Exception e){
      throw new RuntimeException("Error getting response from address ["+url.toString()+"].",e);
    }
    //
    urlConnection.disconnect();
    //
    return response;
  }

java.lang.RuntimeException: Error getting response from address [http://www.zipmail.com.br].
    at org.jacusoft.operadoracelular.servlet.OperadoraCelularServlet.getPhoneCompany(OperadoraCelularServlet.java:173)
    at org.jacusoft.operadoracelular.servlet.OperadoraCelularServlet.doGet(OperadoraCelularServlet.java:74)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188)
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191)
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168)
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189)
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114)
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838)
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544)
    at java.lang.Thread.run(Thread.java:744)
Caused by: java.io.IOException: Server returned HTTP response code: 401 for URL: http://tjro86/B0000D0000N0002F0000S0000R0004/http://www.zipmail.com.br/
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1626)
    at org.jacusoft.operadoracelular.servlet.OperadoraCelularServlet.getPhoneCompany(OperadoraCelularServlet.java:165)