Java UTF-8编码

Question

I have a String like this

String str = "\u0e04\u0e38\u0e13\u0e23\u0e39\u0e49\u0e21\u0e31\u0e49\u0e22\u0e44\u0e14\u0e42\u0e19";

It actually looks like ช1: คุณรู้มั้ยไดโนเสาร์ตั

What I want is to keep the string as a string format so that str.charAt(3) is 'e' rather than a strange character.

How to do this? Help

Further explain: I get this string from a file. I read a line in the file to a string, and this line appears to be "\ค\ุ\ณ\ร\ู\้\ม\ั\้\ย\ไ\ด\โ\น". So in memory, this string is like this.

Code here:

FileReader fr = new FileReader("sample2.json");
BufferedReader br = new BufferedReader(fr);

String line;
while((line = br.readLine()) != null)
{
    JSONObject data = new JSONObject(line);
        String text = data.getString("text");

This line in the file is "\ค\ุ\ณ\ร\ู\้\ม\ั\้\ย\ไ\ด\โ\น"

Now I want to keep the string text as its original format.

Answer 1

您只需要转义每个反斜杠：

String str = "\\u0e04\\u0e38...";

Answer 2

I guess you've read this string from a file or stream. Seems you've read it using the wrong encoding (not the one the String was encoded with when it was written to that file/stream). That's why you get this issue, I think.

We don't worry about encodings when Strings are in memory (in the memory of the JVM for example). Encodings start to matter when you need to write your in-memory data/String to file/stream or to read it from file/stream.

Answer 3

Okay, this looks dumb, but it will work in your case:

Instead of:

JSONObject data = new JSONObject(line);

JSONObject data = new JSONObject(line.replaceAll("\\\\", "\\\\\\\\"));

The problem is that JSON converts your unicode chars for your 'convenience'.