Mega Code Archive
Create Md5 Checksum
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//package com.si.anddos.utils;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.security.MessageDigest;
import java.util.Date;
/**
*
* @author Carlos Martinez
*/
class Utils {
// --------- Carlos Martinez -------------------
public static String inputStreamAsString(InputStream stream)
throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(stream,
"UTF-8"));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = br.readLine()) != null) {
sb.append(line).append('\n');
}
br.close();
return sb.toString();
}
// ----------- Carlos Martinez ----------------------
public static String parseLastValueStr(String s, String oddelovac) {
return s.substring(s.lastIndexOf(oddelovac) + 1);
}
public static long getDateLong() {
Date d = new Date();
return d.getTime();
}
public static String getMD5(File file) throws FileNotFoundException,
IOException {
/*
* try { MessageDigest md =
* java.security.MessageDigest.getInstance("MD5"); FileInputStream fio =
* new FileInputStream(file);
*
* int length = (int)file.length(); byte [] bytes = new byte[length];
* fio.read(bytes);
*
* md.update(bytes); md.digest(); } catch (NoSuchAlgorithmException e) {
* e.printStackTrace(); }
*
* FileInputStream fis = new FileInputStream( file ); String md5 =
* "";//org.apache.commons.codec.digest.DigestUtils.md5Hex( fis );
*
* return md5;
*/
try {
return getMD5Checksum(file.getAbsolutePath());
} catch (Exception e) {
e.printStackTrace();
}
return "";
}
public static byte[] createChecksum(String filename) throws Exception {
InputStream fis = new FileInputStream(filename);
byte[] buffer = new byte[1024];
MessageDigest complete = MessageDigest.getInstance("MD5");
int numRead;
do {
numRead = fis.read(buffer);
if (numRead > 0) {
complete.update(buffer, 0, numRead);
}
} while (numRead != -1);
fis.close();
return complete.digest();
}
// see this How-to for a faster way to convert
// a byte array to a HEX string
public static String getMD5Checksum(String filename) throws Exception {
byte[] b = createChecksum(filename);
String result = "";
for (int i = 0; i < b.length; i++) {
result += Integer.toString((b[i] & 0xff) + 0x100, 16).substring(1);
}
return result;
}
}
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