如何将字节数组中的数据打印为字符? [英] How to print the data in byte array as characters?

问题描述

在我的字节数组中，我有一个消息的 hash 值，它由一些负值和正值组成.使用 (char)byte[i] 语句可以轻松打印正值.

In my byte array I have the hash values of a message which consists of some negative values and also positive values. Positive values are being printed easily by using the (char)byte[i] statement.

现在我怎样才能得到负值?

Now how can I get the negative value?

推荐答案

好吧，如果您乐于以十进制形式打印它，您可以通过屏蔽使其成为正数:

Well if you're happy printing it in decimal, you could just make it positive by masking:

int positive = bytes[i] & 0xff;

不过，如果您要打印散列，则使用十六进制会更传统.关于 Stack Overflow 解决在 Java 中将二进制数据转换为十六进制字符串还有很多其他问题.

If you're printing out a hash though, it would be more conventional to use hex. There are plenty of other questions on Stack Overflow addressing converting binary data to a hex string in Java.

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