android发送xml数据到web的方法与问题

android端向web发送xml数据:

	public void sendXml() throws Exception{

		String urlStr = "http://192.168.0.2:8080/web/info!receiveXmlAction.action";
		URL url = new URL(urlStr);
		HttpURLConnection conn = (HttpURLConnection)url.openConnection();
		InputStream is = context.getAssets().open("struts.xml");
//		BufferedReader br = new BufferedReader(new InputStreamReader(is));
//		StringBuffer sb = new StringBuffer();
//		do{
//			sb.append(br.readLine());
//		}while(br.readLine() != null);
		conn.setRequestMethod("POST");
		conn.setConnectTimeout(5*1000);
		conn.setDoOutput(true);
		conn.setRequestProperty("Content-type", "text/xml charset=UTF-8");
	//	conn.setRequestProperty("Content-Length", String.valueOf(sb.toString().getBytes().length));
		OutputStream os = conn.getOutputStream();
		ByteArrayOutputStream baos = new ByteArrayOutputStream();  
		byte[] buffer = new byte[1024];
		int len=0;
		while((len=is.read(buffer))!=-1){
			baos.write(buffer,0,len);
			Log.i("UPLOAD", new String(buffer));
		}
		byte[] data = baos.toByteArray();
		os.write(data);
		is.close();
		os.flush();
		os.close();
		Log.i("UPLOAD", String.valueOf(conn.getResponseCode()));
	}

 以上代码能够成功发送并在服务器接收,但是代码从OutputStream 开始改为下面的就不行了

 

OutputStream os = conn.getOutputStream();
		
		byte[] buffer = new byte[1024];
		int len=0;
		while((len=is.read(buffer))!=-1){
			os.write(buffer,0,len);
			Log.i("UPLOAD", new String(buffer));
		}
		

 

根本还调用不到服务器端的receiveXmlAction方法.不知道是为什么?

 

也就是说,我直接通过输出流输出是不行的,必须先把数据输出到ByteArrayOutputStream ,再转为二进制数据,再用

OutputStream 输出才可以

 

有没有类似情况的朋友??指教一下

评论

1 楼 eryanwcp 2011-12-26  

public static String sendXML(String path,InputStream inStream,Map<String, String> params)throws Exception{
		String requestXml = XmlUtil.readXmlFile(inStream,params);//组合成xml实体内容  类似socket里面的报文
		Log.d(TAG, "request xml:\n" + requestXml);
		byte[] data = requestXml.getBytes();
		URL url = new URL(path);
		HttpURLConnection conn = (HttpURLConnection)url.openConnection();
		conn.setRequestMethod("POST");
		conn.setConnectTimeout(5 * 1000);
		conn.setDoOutput(true);//如果通过post提交数据，必须设置允许对外输出数据
		conn.setRequestProperty("Content-Type", "text/xml; charset=UTF-8");
		conn.setRequestProperty("Content-Length", String.valueOf(data.length));
		OutputStream outStream = conn.getOutputStream();
		outStream.write(data);
		outStream.flush();
		outStream.close();
		String result;
		if(conn.getResponseCode()==200){
			String responseXml = new String(StreamTool.readInputStream(conn.getInputStream()),"UTF-8");//响应xml数据
			Log.d(TAG, "response xml:\n" + responseXml);
			Map<String, String> map = parseXml(responseXml);
			result = map.get("result");
			if("OK".equals(result)){
				User user = new User(map.get("username"), map.get("password"));//登录成功后即可保存登录状态在客户端
			}
			return responseXml;
		}
		return null;
	}