这是我正在做的事情，可能看起来有些笨拙，但是可以帮助您解决该问题。我得到一个BadPaddingException。阅读几乎所有相关主题，但找不到合适的解决方案。我是加密解密程序设计的新手，需要在我的Java应用程序之一中实现它。
谢谢..这就是代码的样子....
public static void main(String[] args) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
// TODO Auto-generated method stub
String FileName="encryptedtext.txt";
String FileName2="decryptedtext.txt";
String pad="0";
KeyGenerator KeyGen=KeyGenerator.getInstance("AES");
KeyGen.init(128);
SecretKey SecKey=KeyGen.generateKey();
Cipher AesCipher=Cipher.getInstance("AES");
AesCipher.init(Cipher.ENCRYPT_MODE,SecKey);
byte[] byteText="My name is yogesh".getBytes();
byte[] byteCipherText=AesCipher.doFinal(byteText);
String cipherText = null;
try {
FileWriter fw=new FileWriter(FileName);
BufferedWriter bw=new BufferedWriter(fw);
bw.write(byteCipherText.toString());
bw.close();
}catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
FileReader fr=new FileReader(FileName);
BufferedReader br=new BufferedReader(fr);
cipherText=br.readLine();
br.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
AesCipher.init(Cipher.DECRYPT_MODE,SecKey);
while(((cipherText.getBytes().length)%16)!=0)
{
cipherText=cipherText+pad;
}
byte[] bytePlainText=AesCipher.doFinal(cipherText.getBytes());
FileWriter fw1;
try {
fw1 = new FileWriter(FileName2);
BufferedWriter bw1=new BufferedWriter(fw1);
bw1.write(bytePlainText.toString());
bw1.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}