j2me心得----通过http发送post信息

来源：互联网发布：淘宝app6.1.4 编辑：程序博客网时间：2024/05/22 11:50

[本信息由genww原创，转载请注明]
   String url = "http://localhost:8080/gen/test2.jsp";
   String rawData = "a=1&b=2&c=3";
   String type = "application/x-www-form-urlencoded";

   try {
    conn = (HttpConnection) Connector.open( url );
    conn.setRequestMethod( HttpConnection.POST );

conn.setRequestProperty( "Content-Type","application/x-www-form-urlencoded");
conn.setRequestProperty( "Content-Length",""+rawData.length() );

    OutputStream os = conn.openOutputStream();
    os.write( rawData.getBytes() );

        int rc = conn.getResponseCode();

   }
   catch( IOException e ){
    // handle the error here
   }

  str="";
        int ch=0;
        long len=0;
        len=conn.getLength();
        try {
   s=conn.openDataInputStream();
  } catch (IOException e1) {
   // TODO Auto-generated catch block
   e1.printStackTrace();
  }
        if(len!=-1){
            try{
                 for(long i=0;i<len;){

                     if((ch=s.read())!=-1){//数据获取成功
                     System.out.print((char)ch);
                         i++;
                     }

                 }


            }
            catch(Exception e){
            System.out.println("数据获取失败");

            e.printStackTrace();
            try{Thread.sleep(5000);}catch(Exception ee) {}
            }
        }
        else{
        str="没有数据";
        }
        try {
   conn.close();
   s.close();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  [如有错误和不足之处请留言指出]