使用Java加密[重复]

Question

import java.security.Key;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.util.Base64;

public class encryptData {
  public static void main(String[] args) {

    String data="amount=10&expiryDate=20150101 151515&orderRefNum=11001&postBackURL=http://localhost:9081/local/status.php&storeId=28";
    String key="89OUITUPRL3I8H3G";

    Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
    SecretKeySpec secretKey = new SecretKeySpec(key.getBytes(), "AES");
    cipher.init(Cipher.ENCRYPT_MODE, secretKey);
    encryptedValue = new String(Base64.encodeBase64(cipher.doFinal(data.getBytes())));
  }
}

/tmp/java_Ramvov/encryptData.java:16: error: cannot find symbol

encryptedValue = new String(Base64.encodeBase64(cipher.doFinal(data.getBytes()))); 
^
symbol: variable encryptedValue

location: class encryptData

/tmp/java_Ramvov/encryptData.java:16: error: cannot find symbol

encryptedValue = new String(Base64.encodeBase64(cipher.doFinal(data.getBytes())));
                                   ^ 
symbol: method encodeBase64(byte[])

location: class Base64

我对Java知之甚少。请帮忙

Answer 1

两个问题：

>

必须声明EncryptedValue，方法是在变量名之前添加一个类型：

String encryptedValue = new String(Base64...

您不正确地使用了java.util.base64。没有base64.encodeBase64方法。研究该类及其嵌套类base64.decoder和base64.encoder的Javadoc以了解如何使用它们。