HttpsURLConnection 업로드 파일 흐름(인 스 턴 스 설명)

/**
   * HttpsURLConnection     
   *
   * @param args
   * @throws Exception
   */
  public static void main(String[] args) throws Exception {
    //    
    java.io.File file = new java.io.File("/Users/jikukalun/Pictures/id1.jpg");
    FileInputStream fileInputStream = new FileInputStream(file);
    //      
    String urlString = "************";

    URL url = new URL(urlString);
    HttpsURLConnection con = (HttpsURLConnection) url.openConnection();
    //      httpUrlConnection  ，     post  ，     
    // http   ，      true,       false;
    con.setDoOutput(true);
    //      httpUrlConnection  ，      true;
    con.setDoInput(true);
    //         "POST"，   GET
    con.setRequestMethod("POST");
    // Post         
    con.setUseCaches(false);
    //                java  
    // (      ,         , WEB               java.io.EOFException)
//    con.setRequestProperty("Content-type", "application/x-java-serialized-object");
    OutputStream out = con.getOutputStream();

    //         
    FileInputStream inputStream = new FileInputStream(file);
    byte[] data = new byte[2048];
    int len = 0;
    int sum = 0;
    while ((len = inputStream.read(data)) != -1) {
      //             HttpsURLConnection,    
      out.write(data, 0, len);
      sum = len + sum;
    }

    System.out.println("       :" + sum);

    out.flush();
    inputStream.close();
    out.close();

    int code = con.getResponseCode(); //  post      
    System.out.println("code=" + code + " url=" + url);
    if (code == 200) {
      InputStream inputStream2 = con.getInputStream();
      ByteArrayOutputStream bos = new ByteArrayOutputStream();
      while ((len = inputStream2.read(data)) != -1) {
        bos.write(data, 0, len);
      }
      inputStream2.close();
      String content = bos.toString();
      bos.close();
      System.out.println("result =" + content);
      //    json         json  
      JSONObject json = JSONObject.parseObject(content);
      try {
        System.out.println("name=" + json.getString("name") + ", people=" + json.getString("people") + ", sex=" + json.getString("sex")
            + ", id_number=" + json.getString("id_number") + ", type=" + json.getString("type") + ", address=" + json.getString("address")
            + ", birthday=" + json.getString("birthday"));
      } catch (JSONException e) {
        e.printStackTrace();
      }
    }
    //  HttpsURLConnection  
    con.disconnect();
  }

import com.alibaba.fastjson.JSONException;
import com.alibaba.fastjson.JSONObject;
import javax.net.ssl.HttpsURLConnection;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;