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/** 
 * ¼ÓÃÜ 
 *  
 * @param content ÐèÒª¼ÓÃܵÄÄÚÈÝ 
 * @param password  ¼ÓÃÜÃÜÂë 
 * @return 
 */ 
public static byte[] encrypt(String content, String password) {  
        try {             
                KeyGenerator kgen = KeyGenerator.getInstance("AES");  
                kgen.init(128, new SecureRandom(password.getBytes()));  
                SecretKey secretKey = kgen.generateKey();  
                byte[] enCodeFormat = secretKey.getEncoded();  
                SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");  
                Cipher cipher = Cipher.getInstance("AES");// ´´½¨ÃÜÂëÆ÷  
                byte[] byteContent = content.getBytes("utf-8");  
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