手动发送xml报文调用webservice

public String sendMessageByWebService2(String phone,String msg,String... args){
		String webserviceUrl = PropertiesHandle.readValue("SMS.webserviceurl");
		String userName = PropertiesHandle
				.readValue("SMS.webserviceusername");
		String mainCode = PropertiesHandle
				.readValue("SMS.webservicemaincode");
		String pwd = PropertiesHandle.readValue("SMS.webservicepwd");
		String RmTfh = PropertiesHandle.readValue("SMS.webservicermtfh");
		String result = "";
		URL url = null;
		StringBuffer sb = new StringBuffer();
		sb.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
		sb
				.append("<soap:Envelope xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\">");
		sb.append("<soap:Body>");
		sb
				.append("<ns1:getBalance xmlns:ns1=\"http://webService.sooyie.com/\">");
		sb.append("<arg0>"+mainCode+"</arg0>");
		sb.append("<arg1>"+pwd+"</arg1>");
		sb.append("</ns1:getBalance>");
		sb.append("</soap:Body></soap:Envelope>");
		try {
			url = new URL(webserviceUrl);
		} catch (MalformedURLException e1) {

			e1.printstacktrace();
		}
		URLConnection uc = null;
		OutputStreamWriter out = null;
		BufferedReader rd = null;
		try {
			uc = url.openConnection();
			uc.setDoOutput(true); // ....必须设置为'true'.
			uc.setRequestProperty("Content-Type","text/xml"); // 记住这行不能少否则会出错
			out = new OutputStreamWriter(uc.getoutputStream(),"utf-8");
			out.write(sb.toString());
			out.flush();
			out.close();

			rd = new BufferedReader(new InputStreamReader(uc.getInputStream(),"utf-8"));
			StringBuffer responseStr = new StringBuffer();
			String str;
			while ((str = rd.readLine()) != null) {
				responseStr.append(str);
			}
			result = responseStr.substring(responseStr.indexOf("<return>") + 8,responseStr.indexOf("</return>"));
			System.out.println(result);
			rd.close();
		} catch (IOException e) {
			e.printstacktrace();
		}
return result;

	}