1.[代码][Java]代码

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

/**

* Created by liuhj on 2015/11/27.

*/

public class MD5 {

public static void main(String args[]){

StringMD5("123456");

}

public static String StringMD5(String str){

char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8',

'9', 'A', 'B', 'C', 'D', 'E', 'F' };

MessageDigest md = null;

try {

md = MessageDigest.getInstance("MD5");

} catch (NoSuchAlgorithmException e) {

e.printStackTrace();

}

md.reset();

md.update(str.getBytes());

byte[] bArray = md.digest();

String finalStr = new String(encodeHex(bArray, hexDigits));

System.out.println("16位大写：" + finalStr.substring(8, 24));

System.out.println("32位大写：" + finalStr);

return finalStr;

}

protected static char[] encodeHex ( final byte[] data, final char[] toDigits){

final int len = data.length;

final char[] out = new char[len << 1];

for (int i = 0, j = 0; i < len; i++) {

out[j++] = toDigits[(0xF0 & data[i]) >>> 4];

System.out.println((0xF0 & data[i]) >>> 4);

out[j++] = toDigits[0x0F & data[i]];

}

return out;

}

}