BlackBerry应用无法与服务器建立Http连接 [英] BlackBerry app unable to establish Http Connection with server

问题描述

这是我用于HTTP连接的代码：

  HttpConnection connection = null; 
 // InputStream inputstream = null; 
 connection =（HttpConnection）Connector.open（http://www.google.com）; 
 // HTTP请求
 connection.setRequestMethod（HttpConnection.GET）; 
 connection.setRequestProperty（Content-Type，// text plain）; 
 connection.setRequestProperty（Connection，close）; 
 add（new LabelField（+ connection.getResponseMessage（）））; 
 connection.close（）;这个BlackBerry开发指南标题为        http://docs.blackberry.com/en/developers/deliverables/11938/CS_create_first_available_HTTP_connection_857706_11.jsprel =nofollow noreferrer>代码示例：使用第一个可用的传输方式通过HTTP创建连接工作！ ！
  ConnectionFactory connFact = new ConnectionFactory（）; 
 ConnectionDescriptor connDesc; 
 connDesc = connFact.getConnection（http://www.google.com）; 
 if（connDesc！= null）{
 HttpConnection httpConn; 
 httpConn =（HttpConnection）connDesc.getConnection（）; 
 try {
 final int iResponseCode = httpConn.getResponseCode（）; 
 UiApplication.getUiApplication（）。invokeLater（new Runnable（）{
 public void run（）{
 Dialog.alert（Response code：+ 
 Integer.toString（iResponseCode ））; 
} 
}）; 
} catch（IOException e）{
 System.err.println（Caught IOException：+ e.getMessage（））; 
} 
} 
  
 
This is the code that I am using for an HTTP connection:
HttpConnection connection = null;
// InputStream inputstream = null;
connection = (HttpConnection) Connector.open("http://www.google.com");
//HTTP Request
connection.setRequestMethod(HttpConnection.GET);
connection.setRequestProperty("Content-Type","//text plain");
connection.setRequestProperty("Connection", "close");
add(new LabelField(""+connection.getResponseMessage()));
connection.close();

解决方案
This BlackBerry Development Guide titled "Code sample: Creating a connection over HTTP by using the first available transport" worked!!
ConnectionFactory connFact = new ConnectionFactory();
ConnectionDescriptor connDesc;
connDesc = connFact.getConnection("http://www.google.com");
if (connDesc != null) {
    HttpConnection httpConn;
    httpConn = (HttpConnection)connDesc.getConnection();
    try { 
        final int iResponseCode = httpConn.getResponseCode();
        UiApplication.getUiApplication().invokeLater(new Runnable() {
            public void run() {
                Dialog.alert("Response code: " + 
                    Integer.toString(iResponseCode));
            }
        });
    } catch (IOException e) {
        System.err.println("Caught IOException: " + e.getMessage());
    }
}


                        
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