GET

 public static String get(final String url) {
        final StringBuilder sb = new StringBuilder();
        FutureTask<String> task = new FutureTask<String>(new Callable<String>() {
            @Override
            public String call() throws Exception {
                BufferedReader br = null;
                InputStreamReader isr = null;
                URLConnection conn;
                try {
                    URL geturl = new URL(url);
                    conn = geturl.openConnection();//创建连接
                    conn.connect();//get连接
                     isr = new InputStreamReader(conn.getInputStream());//输入流
                    br = new BufferedReader(isr);
                    String line = null;
                    while ((line = br.readLine()) != null) {
                        sb.append(line);//获取输入流数据
                    }
                    System.out.println(sb.toString());
                } catch (Exception e) {
                    e.printStackTrace();
                } finally {//执行流的关闭
                    if (br != null) {
                        try {
                            if (br != null) {
                                br.close();
                            }
                            if (isr != null) {
                                isr.close();
                            }
                        } catch (IOException e) {
                            e.printStackTrace();
                        } }}
                return sb.toString();
            }
        });
        new Thread(task).start();
        String s = null;
        try {
            s = task.get();//异步获取返回值
        } catch (Exception e) {
            e.printStackTrace();
        }
        return s;
    }

POST

 public static String post(final String url, final Map<String, String> map) {
        final StringBuilder sb = new StringBuilder();
        FutureTask<String> task = new FutureTask<String>(new Callable<String>() {
            @Override
            public String call() throws Exception {
                DataOutputStream out = null;
                BufferedReader br = null;
                URLConnection conn;
                URL posturl = new URL(url);
                try {
                    conn = posturl.openConnection();//创建连接
                    conn.setDoInput(true);//post请求必须设置
                    conn.setDoOutput(true);//post请求必须设置
                    out = new DataOutputStream(conn
                            .getOutputStream());//输出流
                    StringBuilder request = new StringBuilder();
                    for (String key : map.keySet()) {
                        request.append(key + "=" + URLEncoder.encode(map.get(key), "UTF-8") + "&");
                    }//连接请求参数
                    out.writeBytes(request.toString());//输出流写入请求参数
                    out.flush();
                    out.close();
                    br = new BufferedReader(new InputStreamReader(conn.getInputStream()));//获取输入流
                    String line;
                    while ((line = br.readLine()) != null) {
                        sb.append(line);
                    }
                    System.out.println(sb.toString());
                } catch (Exception e) {
                    e.printStackTrace();
                } finally {//执行流的关闭
                    if (br != null) {
                        br.close();
                    }
                    if (out != null) {
                        out.close();
                    } }
                return sb.toString(); }
        });
        String s = null;
        new Thread(task).start();
        try {
            s = task.get();//异步获取返回值
        } catch (Exception e) {
            e.printStackTrace();
        }
        return s;
    }

发送请求

//            String url = "http://192.168.0.199:8080/android";
//            String s = get(url);
//            System.out.println(s);

HashMap<String, String> stringStringHashMap = new HashMap<>();
stringStringHashMap.put("hid","CC:1B:E0:B0:23:DE");
stringStringHashMap.put("bid","CC:1B:E0:B0:23:DE");
//            stringStringHashMap.put("question","%e8%ae%b2%e4%b8%aa%e6%95%85%e4%ba%8b");
stringStringHashMap.put("question",message);
stringStringHashMap.put("token","a39813cf8a550312f24196e7d99c2bc8");
String post = post("http://nim.prec-robot.com/api/speechrcognition/speechrcognition", stringStringHashMap);

System.out.println(post);