Android 关于Josn实现httppost 获取数据

[biao_qi]

        [SoapHeader("soapHeader")]
        [WebMethod(Description = "测试参数为List<string> ")]
        public string Test(List<string> iDList)
        {
            log.Info(iDList);
            return ReturnFormatJson.WriteSuccess("", iDList);
        }

public void Test() {		
		try {
			List<String> iDList =new ArrayList<String>();
			iDList.add("0000001");
			iDList.add("0000002");
			iDList.add("0000003");
			JSONObject pParameters = new JSONObject();
			pParameters.put("iDList", iDList);
			HttpResponse response = post("Test", pParameters);
			int code = response.getStatusLine().getStatusCode();
			if (code == 200) {
				String strEntity = EntityUtils.toString(response.getEntity());	 				
			} else {
				response.getEntity().getContent().close();
			}
		} catch (Exception e) {
			e.printStackTrace();
		}	 
	}

protected HttpResponse post(String pMethodName, JSONObject pParameters) {

		HttpResponse response = null;
		String baseURL = Configure.WEBSERVICEURL + pMethodName;
		try {
			HttpParams httpParams = new BasicHttpParams();
			HttpConnectionParams.setConnectionTimeout(httpParams, TIMEOUT_MILLISEC);
			HttpConnectionParams.setSoTimeout(httpParams, TIMEOUT_MILLISEC);
			HttpClient httpclient = new DefaultHttpClient(httpParams);

			HttpPost httppost = new HttpPost(baseURL);			

			// 添加http Header 信息
//			httppost.setHeader("Range","bytes="+"");
			httppost.setHeader("Accept", "application/json");		 
			httppost.addHeader("Content-Type", "application/json; charset=utf-8");
			httppost.addHeader("CallName", "Vashion");
			httppost.addHeader("CallPassword", "Vashion@Pass2016");

			// 添加 json 参数
			if (pParameters != null) {
				httppost.setEntity(new StringEntity(pParameters.toString(), HTTP.UTF_8));
			}		 
			// execute
			response = httpclient.execute(httppost );
		} catch (IOException e) {
			e.printStackTrace();
		}

		return response;
	}

结果是
HTTP/1.1 500 Internal Server Error

这样的webservice 参数应该怎么传递

如果参数是自定义的Class 更复杂的情况

应该怎么处理