java - 将负值的 byte[] 转换为 String

Question

我有这个字节[] = {-53, 54, -5, -89, -69, -126, -57, 36, 49, 114, -66, 67, 39, 18, 57, -40 , 50, -113, 52, -113, 111, -65, -20, -127, -84, 90, -74, -47, 94, 23, 18, -36}

如何将其转换为字符串？我尝试了很多方法，但都不起作用

我正在使用这个库来编码我的字符串 https://github.com/scottyab/AESCrypt-Android ，上面有几行代码生成byte[]

private static SecretKeySpec generateKey(final String password) throws NoSuchAlgorithmException, UnsupportedEncodingException {
    final MessageDigest digest = MessageDigest.getInstance(HASH_ALGORITHM);
    byte[] bytes = password.getBytes("UTF-8");
    digest.update(bytes, 0, bytes.length);
    byte[] key = digest.digest(); //I want to convert this byte[] to String

    log("SHA-256 key ", key);

    SecretKeySpec secretKeySpec = new SecretKeySpec(key, "AES");
    return secretKeySpec;
}

Answer 1

您应该使用 Base64 对字节数组进行编码。

如果您使用Java8，Base64已经包含在java.util包中。

尝试以下代码:

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

        byte[] b = {-53, 54, -5, -89, -69, -126, -57, 36, 49, 114, -66, 67, 39, 18, 57, -40, 50, -113, 52, -113, 111, -65, -20, -127, -84, 90, -74, -47, 94, 23, 18, -36};
         String encoded = Base64.getEncoder().encodeToString(b);
         System.out.println(encoded);

    }

结果:

  yzb7p7uCxyQxcr5DJxI52DKPNI9vv+yBrFq20V4XEtw=