在Java中打印具有空字符的字符串 [英] Print string with null character in java

问题描述

我有一个字符串，其中包含空字符，即\0.如何在Java中打印整个字符串?

I have string which contains null character ie \0. How can I print the whole string in java?

String s = new String("abc\u0000def");
System.out.println(s.length());

System.out.println(s);

eclipse控制台上的输出:

Output on eclipse console:

7
abc

长度是完整字符串的长度，但是如何打印整个字符串?

Length is that of complete string, but how can I print the whole string?

更新:我正在使用

Eclipse Helios Service Release 2

Java 1.6

推荐答案

如果Eclipse不配合，我建议在打印之前用空格替换空字符:

If Eclipse won't cooperate, I'd suggest replacing the null characters with spaces before printing:

System.out.println(s.replace('\u0000', ' '));

如果您需要在很多地方进行此操作，可以使用以下技巧从System.out自身中过滤掉它们:

If you need to do this in a lot of places, here's a hack to filter them from System.out itself:

import java.io.*;

...

System.setOut(new PrintStream(new FilterOutputStream(
        new FileOutputStream(FileDescriptor.out)) {
    public void write(int b) throws IOException {
        if (b == '\u0000') b = ' ';
        super.write(b);
    }
}));

然后，您可以正常调用System.out方法，所有数据都将通过过滤器.

Then you can call System.out methods normally, with all the data going through the filter.

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