Java中Http连接的两种方式(小结)

String path ="";//
URL url = new URL(path);

HttpURLConnection conn = (HttpURLConnection) url.openConnection();

conn.setRequestMethod("GET");  //设置本次请求的方式 ， 默认是GET方式， 参数要求都是大写字母
      conn.setConnectTimeout(5000);//设置连接超时
      conn.setDoInput(true);//是否打开输入流 ， 此方法默认为true
      conn.setDoOutput(true);//是否打开输出流， 此方法默认为false
      conn.connect();//表示连接

  InputStream is = conn.getInputStream();

        String name = path.substring(path.lastIndexOf("/")+1);

        System.out.println("name = " + name);

        fos = new FileOutputStream("C:\\pro\\"+name);

        byte[] buffer = new byte[1024];
        int len = 0;

        while ((len = is.read(buffer))!=-1) {

          fos.write(buffer, 0, len);

OutputStream os = conn.getOutputStream();
    os.write("platform=2&appVersion=1.7.0&osType=2".getBytes());
    os.flush();

String path = "";

HttpClient client = new DefaultHttpClient();

HttpGet httpGet = new HttpGet(path);

HttpResponse response = client.execute(httpGet);

response.getStatusLine().getStatusCode() == 200;

HttpEntity entity = response.getEntity();

HttpPost httpPost = new HttpPost(path);

    //创建一个提交数据的容器
    List<BasicNameValuePair> parames = new ArrayList<>();

    parames.add(new BasicNameValuePair("platform", "2"));
    parames.add(new BasicNameValuePair("appVersion", "1.7.0"));
    parames.add(new BasicNameValuePair("osType", "2"));

    //封装容器到请求参数中
    HttpEntity entity = new UrlEncodedFormEntity(parames);
    //设置请求参数到post请求中
    httpPost.setEntity(entity);

    //执行post请求
    HttpResponse response = client.execute(httpPost);