java32位md5加密

代码如下

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

public class Main {

public static void main(String[] args) {

Main Main = new Main();

System.out.println(Main.encryption("xiaowen123"));

}

/**

*

* @param plainText

*            明文

* @return 32位密文

*/

public String encryption(String plainText) {

String md5 = new String();

try {

MessageDigest md = MessageDigest.getInstance("MD5");

md.update(plainText.getBytes());

byte b[] = md.digest();

int i;

StringBuffer buf = new StringBuffer("");

for (int offset = 0; offset < b.length; offset++) {

i = b[offset];

if (i < 0)

i += 256;

if (i < 16)

buf.append("0");

buf.append(Integer.toHexString(i));

}

md5 = buf.toString();

} catch (NoSuchAlgorithmException e) {

e.printStackTrace();

}

return md5;

}

}

详细说明：http://java.662p.com/thread-3792-1-1.html