Question

• This is my code.
• I use a simple way to make POST httprespon.
• Mounted on applet.
• I work correctly in Eclipse.
• But mounted in appletviewer cause shot down.
• Web page will be shot down too.
• The amount of data is too large to deal with?
• Or is there any other reasons?

• I need help Thank you

  public class we extends Applet
  {
  Button sd = new Button("11");
  Label title= new Label();
  Label prompt = new Label();
  TextField input = new TextField(8);
  Label result = new Label();
  
  public void init()
  {
      add(sd);
          }
  
  public void start() {
  
  }
  
  public void paint (Graphics g) {
  
  }
  
  public boolean action(Event e, Object o) {
      if (e.target == input) {
          match();
      } else if (e.target == sd) {
          abandon();
      }
      return true;
  }   
  private void match() {      
  }
  private void abandon() {
      String url="http://119.14.80.132/ACT_ID_355";
  
  HttpPost httppost=new HttpPost(url);
  
  List<NameValuePair> params=new ArrayList<NameValuePair>();
  
  params.add(new BasicNameValuePair("UNCLOSE1","1"));
  
  try {
      httppost.setEntity(new UrlEncodedFormEntity(params,HTTP.ISO_8859_1));
  } catch (UnsupportedEncodingException e1) {
  
      e1.printStackTrace();
  }
  
  HttpResponse response = null;
  try {
      response = new DefaultHttpClient().execute(httppost);
  } catch (ClientProtocolException e1) {
  
      e1.printStackTrace();
  } catch (IOException e1) {
  
      e1.printStackTrace();
  }
  
  if(response.getStatusLine().getStatusCode()==200){
      try {
          String resultq=EntityUtils.toString(response.getEntity());
      } catch (ParseException e1) {
  
          e1.printStackTrace();
      } catch (IOException e1) {
  
          e1.printStackTrace();
      }
  }
  
  }
  

  }

appletviewer

Exception in thread "AWT-EventQueue-1" java.security.AccessControlException: acc
ess denied ("java.net.SocketPermission" "119.14.80.132:80" "connect,resolve")
        at java.security.AccessControlContext.checkPermission(AccessControlConte
xt.java:366)
        at java.security.AccessController.checkPermission(AccessController.java:
560)
        at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
        at java.lang.SecurityManager.checkConnect(SecurityManager.java:1051)
        at java.net.Socket.connect(Socket.java:574)
        at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSoc
ketFactory.java:127)
        at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnect
ion(DefaultClientConnectionOperator.java:180)
        at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedCli
entConnectionImpl.java:294)
        at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(Default
RequestDirector.java:640)
        at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultReq
uestDirector.java:479)
        at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpCl
ient.java:906)
        at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpCl
ient.java:805)
        at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpCl
ient.java:784)
        at we.abandon(we.java:130)
        at we.action(we.java:49)
        at java.awt.Component.handleEvent(Component.java:6751)
        at java.awt.Component.postEvent(Component.java:5160)
        at java.awt.Component.postEvent(Component.java:5170)
        at java.awt.Component.dispatchEventImpl(Component.java:4877)
        at java.awt.Component.dispatchEvent(Component.java:4687)
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:723)
        at java.awt.EventQueue.access$200(EventQueue.java:103)
        at java.awt.EventQueue$3.run(EventQueue.java:682)
        at java.awt.EventQueue$3.run(EventQueue.java:680)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDo
main.java:76)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDo
main.java:87)
        at java.awt.EventQueue$4.run(EventQueue.java:696)
        at java.awt.EventQueue$4.run(EventQueue.java:694)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDo
main.java:76)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:693)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThre
ad.java:244)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.
java:163)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
ad.java:151)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)

        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)

        at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)

Answer 1

An applet runs in a ‘Sandbox’. It is only allowed to open a connection to the server it is downloaded from. The error you are seeing is a security violation because you are trying to connect to another server.