testconnection.java

J2ME 无线通信技术应用开发源代码

//程序名TestConnection.java，项目TestConnection
//测试CLDC的基本连接框架：StreamConnection, ContentConnection
import javax.microedition.midlet.*;
import javax.microedition.io.*;
import java.io.*;

public class TestConnection extends MIDlet {
	public void startApp() {
    try {
      testStreamConnection();//测试StreamConnection
      //testContentConnection();//测试ContentConnection
    } catch (IOException e) {
      System.out.println("error.");
    }
		notifyDestroyed();//测试完毕后关闭应用程序
	}
  
  void testStreamConnection() throws IOException{
    try {
      String uri ="socket://localhost:8080";
      StreamConnection conn = (StreamConnection) Connector.open( uri );

      // 发送HTTP请求...
      PrintStream out = new PrintStream(conn.openOutputStream());
      out.println( "GET /j2me/html/TestConnection.html HTTP/1.1\r\n" );
      out.flush();

      // 获取原始HTTP应答...
      InputStream in = conn.openInputStream();
      int ch;
      while( ( ch = in.read() ) != -1 ){
        System.out.print( (char) ch );
      }
      in.close();
      out.close();
      conn.close();
    } catch( ConnectionNotFoundException e ){
      System.out.println( "Http could not be opened" );
    }
  }

	public void pauseApp() {
	}

	public void destroyApp( boolean unconditional ) {
	}
}