package org.sevlet.upload;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

//作者 著作权人 罗瑶光
//已调通 德塔 VPCS 服务器接收图片 form 请求 并显示图片。20220821

//浏阳德塔软件开发有限公司
//Copyright 2018~2022.
//浏阳德塔软件开发有限公司. All rights reserved.
//湖南省 浏阳市 集里街道 神仙坳社区
//大塘冲路206号 阳光家园小区 第10栋别墅

public class code{
  //input stream - outputstream test ok
  public static void main(String[] argv) throws IOException, InterruptedException {
    String file= "C:\\Users\\Administrator\\Desktop\\tempIMG"
        + "\\temp16609361029160.45680025497380305.jpg";
    //String file= "C:\\Users\\Administrator\\Desktop\\tempIMG\\下载.jpg";
    String file1= "C:\\Users\\Administrator\\Desktop\\tempIMG"
        + "\\下载20220821711.jpg";
    //FileInputStream fileInputStream= new FileInputStream(file);
    //FileOutputStream fileOutputStream= new FileOutputStream(file1);
    //byte[] bytes= new byte[1024];
    //int len= 0;
    //while((len= fileInputStream.read(bytes))> 0) {
    //  fileOutputStream.write(bytes, 0, len);
    //  Thread.sleep(5);
    //}
    //fileOutputStream.close();
    FileInputStream fileInputStream= new FileInputStream(file);
    FileOutputStream fileOutputStream= new FileOutputStream(file1);
    byte[] bytes= new byte[1024];
    int len= 0;
    while((len= fileInputStream.read(bytes))> 0) {
      System.out.println(new String(bytes));  
      String string= new String(bytes);
      if(string.contains("image/jpeg\r\n\r\n")) {
        byte[] bytesStrings= "image/jpeg\r\n\r\n".getBytes();
        int position= -1;
        int positionHere= -1;
        int fullLength= bytes.length- bytesStrings.length;
        Here:
          for(int i= 0; i< fullLength; i++ ) {
            position= i;
            for(int j= 0; j< bytesStrings.length; j++ ) {
              if(bytes[i+ j]!= bytesStrings[j]) {
                position= -1;
                continue Here;
              }
            }
            if(position!= -1) {
              positionHere= position;
              break;
            }
          }
        int length= 1024- positionHere- bytesStrings.length;
        byte[] newBytes= new byte[length];
        for(int i= 0; i< length; i++) {
          newBytes[i]= bytes[positionHere+ bytesStrings.length+ i];
        }
        fileOutputStream.write(newBytes);  
      }else if(string.contains("------WebKitFormBoundary")) {
        byte[] bytesStrings= "------WebKitFormBoundary".getBytes();
        int position= -1;
        int positionHere= -1;
        int fullLength= bytes.length- bytesStrings.length;
        Here:
          for(int i= 0; i< fullLength; i++ ) {
            position= i;
            for(int j= 0; j< bytesStrings.length; j++ ) {
              if(bytes[i+ j]!= bytesStrings[j]) {
                position= -1;
                continue Here;
              }
            }
            if(position!= -1) {
              positionHere= position;
              break;
            }
          }
        int length= positionHere;
        byte[] newBytes= new byte[length];
        for(int i= 0; i< length; i++) {
          newBytes[i]= bytes[i];
        }
        fileOutputStream.write(newBytes);  
      }else {
        fileOutputStream.write(bytes, 0, len);
      }
      Thread.sleep(5);
    }
    fileOutputStream.close();
    System.out.println(new String(bytes));
  }

  //BufferedReader - outputstream test error
  //    public static void main(String[] argv) throws IOException, InterruptedException {
  //String file= "C:\\Users\\Administrator\\Desktop\\tempIMG\\下载.jpg";
  //String file1= "C:\\Users\\Administrator\\Desktop\\tempIMG\\下载20220821.jpg";
  //Reader reader= new FileReader(file);
  //BufferedReader bufferedReader = new BufferedReader(reader);
  //FileOutputStream fileOutputStream= new FileOutputStream(file1);
  //String string= "";
  //while((string= bufferedReader.readLine())!= null) {
  //  fileOutputStream.write(string.getBytes());
  //  //fileOutputStream.write("\r\n".getBytes());
  //  Thread.sleep(5);
  //}
  //fileOutputStream.close();

  //String file= "C:\\Users\\Administrator\\Desktop\\tempIMG\\下载.jpg";
  //String file1= "C:\\Users\\Administrator\\Desktop\\tempIMG\\下载202208212.jpg";
  //Reader reader= new FileReader(file);
  //BufferedReader bufferedReader = new BufferedReader(reader);
  //Writer Writer= new FileWriter(file1);
  //BufferedWriter fileOutputStream= new BufferedWriter(Writer);
  //String string= "";
  //StringBuilder stringBuilder= new StringBuilder(); 
  //while((string= bufferedReader.readLine())!= null) {
  //  fileOutputStream.write(string);
  //  Thread.sleep(5);
  //}
  //fileOutputStream.close();
  //    }
}
//super InputStream - outputstream test ok
//  public static void main(String[] argv) throws IOException, InterruptedException {
//String file= "C:/Users/Administrator/Desktop/tempIMG
///temp16609361029160.45680025497380305.jpg";
//String file1= "C:/Users/Administrator/Desktop/tempIMG
///temp16609361029160.45680025497380305out.jpg";
//FileInputStream fileInputStream= new FileInputStream(file);
//FileOutputStream fileOutputStream= new FileOutputStream(file1);
//byte[] bytes= new byte[1024];
//int len= 0;
//while((len= fileInputStream.read(bytes))> 0) {
//  fileOutputStream.write(bytes, 0, len);
//  String string= new String(bytes);
//  System.out.println(string);
//  Thread.sleep(5);
//}
//fileOutputStream.close();
//  }



//  public static void main1(String[] argv) throws IOException, InterruptedException {
//    String file= "C:\\Users\\Administrator\\git1\\frontend_data\\DetaSrc\\org\\sevlet\\upload\\temp16609361029160.45680025497380305.jpg";
//    RandomAccessFile randomAccessFile= new RandomAccessFile(file,"r");

//String string= "image/jpeg\r\n\r\n";
//String string= "------WebKitFormBoundary";
//    StringBuilder StringBuilder= new StringBuilder();
//    for(int i= 0; i< string.length(); i++) {
//char c= string.charAt(i);
//String binaryString= Integer.toBinaryString(c);
//StringBuilder.append(binaryString);
//    }
//    System.out.println(StringBuilder.toString());
//1101 0011 1011 0111 0000 1110 0111 1100 1011 0111 1110 1010 1110
//0001 1001 0111 0011 1110 1101 0110 1101 0
//1011 0110 1101 1011 0110 1101 1011 0110 1101 1010 1111 1001 0111
//0001 0100 1011 1101 0011 1101 0010 0011 
//0110 1111 1110 0101 1011 0110 0001 0110 1111 1110 1011 1011 1011
//0010 0110 0001 1110 0101 1110 01

//1 2 4 8 16 32 64 128 256
//bytes to binary
//    String string= "image/jpeg\r\n\r\n";
//    //String string= "------WebKitFormBoundary";
//    StringBuilder stringBuilder= new StringBuilder(); 
//    byte[] bytes= string.getBytes();
//    for(int i= 0; i< bytes.length; i++) {
//for(int j= 8; j> 0; j--) {
//  byte b= bytes[i];
//  byte c= bytes[i];
//  b= (byte) (c>> j);
//  c= (byte) (c>> j);
//  c= (byte) (c>>(1));//11  1
//  c= (byte) (c<<(1));//1 10
//  if(c == b) {
//    stringBuilder.append(0);
//  }else {
//    stringBuilder.append(1);
//  }
//}
//    }
//    System.out.println(stringBuilder.toString());
//    
//    //HttpPostRequestDecoder decoder 
//= new HttpPostRequestDecoder(new DefaultHttpDataFactory(false), req);
//  }