Javaä¸å°å¾ç转为äºè¿å¶æµåªéè¦ä½¿ç¨FileImageInputStreamåå¾å¾çæ件ï¼ç¶å使ç¨ByteArrayOutputStream åå
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//å¾çå°byteæ°ç»
public byte[] image2byte(String path){
byte[] data = null;
FileImageInputStream input = null;
try {
input = new FileImageInputStream(new File(path));
ByteArrayOutputStream output = new ByteArrayOutputStream();
byte[] buf = new byte[1024];
int numBytesRead = 0;
while ((numBytesRead = input.read(buf)) != -1) {
output.write(buf, 0, numBytesRead);
}
data = output.toByteArray();
output.close();
input.close();
}
catch (FileNotFoundException ex1) {
ex1.printStackTrace();
}
catch (IOException ex1) {
ex1.printStackTrace();
}
return data;
}
å¦å¤ï¼å¦æéè¦å°byte[]ååå¾çæ转为Stringï¼åï¼
//byteæ°ç»å°å¾ç
public void byte2image(byte[] data,String path){
if(data.length<3||path.equals("")) return;
try{
FileImageOutputStream imageOutput = new FileImageOutputStream(new File(path));
imageOutput.write(data, 0, data.length);
imageOutput.close();
System.out.println("Make Picture success,Please find image in " + path);
} catch(Exception ex) {
System.out.println("Exception: " + ex);
ex.printStackTrace();
}
}
//byteæ°ç»å°
16è¿å¶å符串
public String byte2string(byte[] data){
if(data==null||data.length<=1) return "0x";
if(data.length>200000) return "0x";
StringBuffer sb = new StringBuffer();
int buf[] = new int[data.length];
//byteæ°ç»è½¬åæ
åè¿å¶ for(int k=0;k<data.length;k++){
buf[k] = data[k]<0?(data[k]+256):(data[k]);
}
//åè¿å¶è½¬åæ
åå
è¿å¶ for(int k=0;k<buf.length;k++){
if(buf[k]<16) sb.append("0"+Integer.toHexString(buf[k]));
else sb.append(Integer.toHexString(buf[k]));
}
return "0x"+sb.toString().toUpperCase();
}