我怎么打印字节一个字节数组的内容？ [英] how do I print the contents of an array of bytes as bytes?

问题描述

我使用加密（字节）code输入字符串，然后保存加密（字符串）在DB。

I use encrypt(byte) code for input String and then save encrypt(String) in DB.

我得到字符串加密解密，但我需要投字符串到字节不改变，因为解密得到的只是一个字节。

I get String encrypt from DB to decrypt it, but I need to cast String to byte without changing because decrypt get just byte.

我用 s.getBytes（）; ，但它改变了它，

我需要一些code投字符串字节不改变的字符串。
谢谢你这么多。

I need some code to cast string to byte without changing the String. Thank you so much.

推荐答案

的getBytes（）不改变字符串，它连接codeS字符串转换成序列利用该平台的默认字符集字节。

getBytes() doesn't change the string, it encodes string into a sequence of bytes using the platform's default charset.

为了打印字节为字符串值的阵列，

In order to print the array of bytes as a String value,

 String s = new String(bytes);

编辑：

它似乎要打印的字符串作为字节，以便您可以用

it seems as you want to print the string as bytes, for which you can use

Arrays.toString(bytes)

请参阅此code，

String yourString = "This is an example text";
byte[] bytes = yourString.getBytes();
String decryptedString = new String(bytes);
System.out.println("Original String from bytes: " + decryptedString);
System.out.println("String represented as bytes : " + Arrays.toString(bytes));

输出

Original String from bytes: This is an example text
String represented as bytes : [84, 104, 105, 115, 32, 105, 115, 32, 97, 110, 32, 101, 120, 97, 109, 112, 108, 101, 32, 116, 101, 120, 116]

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