[100分]怎么将图片转换成16进制字符串？？？

[jiaxueq]

像一张图片转换成像这样的16进制字符串码

FFD8FFE000104A46494600010100000000000000FFDB004300100B0C0E0C0A100E0D0E1211101318281A181616183123251D283A333D3C3933383740485C4E404457453738506D51575F626768673E4D71797064785C656763FFDB0043011112121815182F1A1A2F63423842636363636363636363636363636363636363636363

[Johnson_Hong]

从图片拿到byte[],然后调用byte[]转16进制字符的方法就行了

private static String byte2hex(byte[] b) {
         String hs = "";
         String stmp = "";
         for (int n = 0; n < b.length; n++) {
             stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));
             if (stmp.length() == 1) {
                 hs = hs + "0" + stmp;
             } else {
                 hs = hs + stmp;
             }
         }
         return hs.toUpperCase();
     }

[树成]

首先你要获得图片的byte，然后通过如下方法：

		 byte[]b=new byte[]{127,99,98};
		 String hex="0123456789abcdef";
		 String r="";
		 for (int i = 0; i < b.length; i++) {
			r+=String.valueOf( hex.charAt((b[i]>>4)&0xf))+
			String.valueOf( hex.charAt((b[i]>>0)&0xf));
		 }
		 System.out.println(r);

其中的b变量是你需要转换的突破字节

[苍蝇①号]

	public static void main(String []args) throws Exception{
		DataInputStream in = new DataInputStream(new FileInputStream("C:/Users/Public/Pictures/Sample Pictures/Autumn Leaves.jpg"));
		PrintStream out = new PrintStream(new FileOutputStream("d:/img.txt"));
		while(in.available() > 0){
			out.printf("%x", in.read());		
		}
		out.close();
		in.close();		
		
	}

[invoked]

路过，学习。

[mouer]

public static void main(String[] args) throws Exception {
		FileInputStream fileInputStream = new FileInputStream(new File("test.png"));
		FileChannel fileChannel = fileInputStream.getChannel();
		
		ByteBuffer buffer = ByteBuffer.allocate(1024);
		StringBuffer sb = new StringBuffer();
		while(fileChannel.read(buffer)!=-1){
			buffer.flip();
			while(buffer.hasRemaining()){
				sb.append(Integer.toHexString(buffer.get()));
			}
			buffer.clear();
		}
		System.out.print(sb.toString().toUpperCase());
		fileChannel.close();
		fileInputStream.close();
	}

[sui_yuan_zhe]

d顶

[阿_布]

一个例子：

package test;

import java.io.File;
import java.io.IOException;

import javax.xml.parsers.*;
import org.w3c.dom.*;
import org.xml.sax.SAXException;

public class Dom{

    public static void main(String[] args) {
        try {
            File file = new File("D:\\dom.xml");
            DocumentBuilderFactory dobf = DocumentBuilderFactory.newInstance();
            DocumentBuilder db = dobf.newDocumentBuilder();
            Document dc=db.parse(file);
            NodeList ndl=dc.getElementsByTagName("VALUE");
            for(int i=0;i<ndl.getLength();i++){
                String noum=dc.getElementsByTagName("NO").item(i).getTextContent();
                System.out.println(noum);
                String add=dc.getElementsByTagName("ADDR").item(i).getTextContent();
                System.out.println(add);
            }
        } catch (ParserConfigurationException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }catch(SAXException e){
            e.printStackTrace();
        }catch(IOException e){
            e.printStackTrace();
        }
    }
}

<?xml version="1.0" encoding="UTF-8"?> 
<RESULT>
<VALUE> 
<NO>A1234</NO>
<ADDR>深圳XX</ADDR>
</VALUE>
<VALUE> 
<NO>B1234</NO> 
<ADDR>珠海XXX</ADDR>
</VALUE>
</RESULT>

[config_man]

/

[SambaGao]

从网上下一个工具直接转不就行了。

[SambaGao]

winhex

[crazylaa]

[Quote=引用 1 楼 johnson_hong 的回复:]
从图片拿到byte[],然后调用byte[]转16进制字符的方法就行了
Java codeprivatestatic String byte2hex(byte[] b) {
String hs="";
String stmp="";for (int n=0; n< b.length; n++) {
stmp= (java.lang.Integer.toHexString(b[n]&0XFF));if (stmp.length()==1) {
hs= hs+"0"+ stmp;
}else {
hs= hs+ stmp;
}
}return hs.toUpperCase();
}
[/Quote]
这个好

[wenjjing2lianee]

好心人真多啊,学习了

[TzSword]

不小心搜了个在线转换的...
哈哈http://dancewithnet.com/lab/2009/data-uri-mhtml/create.php

[TzSword]

[Quote=引用 12 楼 wenjjing2lianee 的回复:]
好心人真多啊,学习了
[/Quote]
你码楼的?