16进制码转换成图片（可用）

下面很长的东西为一张图片的16进制转码

	/**
	 * 
	 */
	@RequestMapping(value = LIST + "/testImg",method=RequestMethod.POST)
	@ResponseBody
	public String testImg(String imgByte){
		String path = "D://imgSave";
		File dir = new File(path);
		
		imgByte = "图片16进制代码";
		
		//检查目录
		if(!dir.isDirectory()){
			throw new BusinessException("上传目录不存在");
		}
		//检查目录写权限
		if(!dir.canWrite()){
			throw new BusinessException("上传目录没有写权限");
		}
		
		path = "D://imgSave//test.jpg"; //path到下面方法调用的时候需要有带记录下来的文件名
		
		try {
			com.dql.lms.system.util.HexToImage.toImage(imgByte, path);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			System.out.println("十六进制转换图片报错");
			e.printStackTrace();
		}
		
		return "1";
	}

上面方法调用的方法

package com.dql.lms.system.util;

import java.io.File;
import java.io.FileOutputStream;

public class HexToImage {
    public static void toImage(String image, String path) throws Exception {  
    	
       HexToImage to=new HexToImage(); 
       /*InputStream is=new FileInputStream("f://cc.txt");  
       InputStreamReader isr = new InputStreamReader(is);  
       BufferedReader br = new BufferedReader(isr);  
       String str = null;  
       StringBuilder sb = new StringBuilder();  
       while ((str = br.readLine()) != null) {  
           //System.out.println(str);  
           sb.append(str);  
       }
       //str.replaceAll(" ", "");
       //String aaa = sb.toString();
       //aaa.replaceAll(" ", "");
       System.out.println(sb.toString().replaceAll(" ", ""));  
       //System.out.println(str);  
       to.saveToImgFile(sb.toString().replaceAll(" ", "").replace("<", "").replace(">", "").toUpperCase(),path);*/
       if (image != null) {  
    	   to.saveToImgFile(image.replaceAll(" ", "").replace("<", "").replace(">", "").toUpperCase(), path);  
        }
    }
    
    public void saveToImgFile(String src,String output){  
           if(src==null||src.length()==0){  
               return;  
           }  
           try{  
               FileOutputStream out = new FileOutputStream(new File(output));  
               byte[] bytes = src.getBytes();  
               for(int i=0;i=0x30&&ch<=0x39){  
               val=ch-0x30;  
           }else if(ch>=0x41&&ch<=0x46){  
               val=ch-0x41+10;  
           }  
           return val;  
       }  
}