Android中POST请求代码

public static String getDataByPost(String APIUrl,Map<String, String> paramsHashMap){
		String result=null;
		try {
			HttpPost httpPost = new HttpPost(APIUrl);
			DefaultHttpClient httpClient = getHttpClient();
			List<BasicNameValuePair> postData = new ArrayList<BasicNameValuePair>();
			for (Map.Entry<String, String> entry : paramsHashMap.entrySet()) {
				postData.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
			}
			UrlEncodedFormEntity entity = new UrlEncodedFormEntity(postData,HTTP.UTF_8);
			httpPost.setEntity(entity);
			HttpEntity httpEntity = null;
			HttpResponse response = null;

			response = httpClient.execute(httpPost);
			httpEntity = response.getEntity();

			InputStream is = httpEntity.getContent();
			StringBuffer sb = new StringBuffer();
			BufferedReader br = new BufferedReader(new InputStreamReader(is));
			String line = "";
			while ((line = br.readLine()) != null) {
				sb.append(line);
			}
			result=sb.toString();
//			try {
//				String path=Environment.getExternalStorageDirectory()+File.separator+"xxxlog.txt";
//				File file=new File(path);
//				file.createNewFile();
//				FileWriter fileWriter=new FileWriter(file);
//				fileWriter.write(sb.toString());
//			        fileWriter.close();
//			} catch (Exception e) {
//			}

           System.out.println(APIUrl+"--->"+result);

		} catch (Exception e) {

		}
		return result;
	}