可以透過下面的方法進行加密，key換成16位的金鑰即可。

import java.io.IOException;

import java.security.SecureRandom;

import javax.crypto.Cipher;

import javax.crypto.SecretKey;

import javax.crypto.SecretKeyFactory;

import javax.crypto.spec.DESKeySpec;

import sun.misc.BASE64Decoder;

import sun.misc.BASE64Encoder;

public class DesUtil {

private final static String DES = "DES";

public static void main(String[] args) throws Exception {

String data = "123 456";

String key = "wang!@#$%";

System.err.println(encrypt(data, key));

System.err.println(decrypt(encrypt(data, key), key));

}

/**

* Description 根據鍵值進行加密

* @param data

* @param key 加密鍵byte陣列

* @return

* @throws Exception

*/

public static String encrypt(String data, String key) throws Exception {

byte[] bt = encrypt(data.getBytes(), key.getBytes());

String strs = new BASE64Encoder().encode(bt);

return strs;

}

/**

* Description 根據鍵值進行解密

* @param data

* @param key 加密鍵byte陣列

* @return

* @throws IOException

* @throws Exception

*/

public static String decrypt(String data, String key) throws IOException,

Exception {

if (data == null)

return null;

BASE64Decoder decoder = new BASE64Decoder();

byte[] buf = decoder.decodeBuffer(data);

byte[] bt = decrypt(buf,key.getBytes());

return new String(bt);

}

/**

* Description 根據鍵值進行加密

* @param data

* @param key 加密鍵byte陣列

* @return

* @throws Exception

*/