GET请求

 public String getHttpRespone(String urlstr) throws IOException {

        String line = "";

        String httpResults = "";

        //urlstr=("http://172.16.21.38:8082/score/queryScoreById?id=201708031145501071de161398140b0e");

        try {

			URL url = new URL(urlstr);
			 // 连接类的父类，抽象类
			HttpURLConnection urlConnection =(HttpURLConnection)url.openConnection();
			urlConnection.setDoOutput(true);
			urlConnection.setRequestMethod("GET");
			urlConnection.setRequestProperty("Accept", "application/json, text/plain, */*");
			urlConnection.setRequestProperty("Connection", "keep-alive");
			// 建立实际的连接
			
			urlConnection.connect();
			InputStream inStream = urlConnection.getInputStream();
			
			//outputStream = new DataOutputStream(urlConnection.getOutputStream());
			
			//outputStream.flush();
			
			//outputStream.close();
			//InputStream inStream = urlConnection.getInputStream();
			BufferedReader reader = new BufferedReader(new InputStreamReader(inStream, "utf-8"));

            while ((line = reader.readLine()) != null) {

                httpResults = httpResults + line.toString();

            }

            reader.close();

            // 断开连接

            urlConnection.disconnect();

        } catch (Exception e) {

            e.printStackTrace();

        }

        return httpResults;

    }