把一串16进制码转化为一张图片

 

 代码如下:

                                Java code

/**
* 存储图片16进制串为图片文件
* @param src 图片16进制文本串
* @param output 要保存的图像文件路径
*/
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<bytes.length;i+=2){
out.write(charToInt(bytes[i])*16+charToInt(bytes[i+1]));
}
out.close();
}catch(Exception e){
e.printStackTrace();
}
}
private int charToInt(byte ch){
int val = 0;
if(ch>=0x30&&ch<=0x39){
val=ch-0x30;
}else if(ch>=0x41&&ch<=0x46){
val=ch-0x41+10;
}
return val;
}