如何让System.in输入流读取utf-8字符？ [英] How can I make System.in Input Stream read utf-8 characters?

问题描述

这是我的代码：

public class MyTestClass {
    public static void main(String[] args) throws Exception {
        Scanner scanner = new Scanner(System.in);
        String s = scanner.nextLine();
        InputStream inputStream = System.in;
        int read = inputStream.read();
        System.out.println(read);
        System.out.println((char)read);
        System.out.println(s);
    }
}

我输入字母 ğ运行程序时两次。控制台输出将是：

And I input the letter ğ twice when I run the program. The console output will be:

ğ
ğ
196
Ä
ğ

如何才能看到正确的字母，而不是Ä？扫描仪似乎做对了。

How can I see the correct letter instead of Ä? Scanner seems to do the right thing.

实际上，为什么这种方法不起作用？这里有什么问题？

And actually, why does not this approach work? What is wrong in here?

推荐答案

将 InputStream 包装在 InputStreamReader中。

int read = new InputStreamReader(System.in).read();
System.out.println((char) read); // prints 'ğ'

如有必要，您可以传递特定的 Charset 到读者的构造函数，但默认情况下，它只使用默认的字符集，这可能是正确的。

If necessary, you can pass a specific Charset to the reader's constructor, but by default, it will just use the default charset, which is probably correct.

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