Question

java怎么把16进制的串另存为图片？

Answer 1

public class Hex2Image {
public static void main(String[] args) throws Exception {
Hex2Image to=new Hex2Image();
InputStream is=new FileInputStream("c:/work/today.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);
}
to.saveToImgFile(sb.toString().toUpperCase(),"c:/work/dd.jpg");
}
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;
}
}

Answer 2

你是想让十六进制的字符串以图片的形式显示吗？

Answer 3

是不是要不数据库中16进制的数据读取出来，显示的是图片？