Java 如何让 PrintWriter 写成 UTF-8？
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How to make the PrintWriter to write UTF-8?
提问by yeah its me
How to make the PrintWriterto write UTF-8?
如何使PrintWriter写UTF-8？
pstream = new PrintWriter(csocket.getOutputStream(), true);
String res = "some string";
pstream.println(res); // here I want to output string as UTF-8
回答by Njol
Use an OutputStreamWriter:
使用OutputStreamWriter：
pstream = new PrintWriter(new OutputStreamWriter(
csocket.getOutputStream(), StandardCharsets.UTF_8), true)
回答by Daniil
Look at Java: Difference between PrintStream and PrintWriterdiscussion.
查看Java：PrintStream 和 PrintWriter 之间的区别讨论。
To be quick: you can use -Dfile.encoding=utf8 JVM parameter or method suggested in the discussion (see second answer).
快速：您可以使用讨论中建议的 -Dfile.encoding=utf8 JVM 参数或方法（请参阅第二个答案）。
回答by Error
回答by Shahab Saalami
PrintWriter out1 = null;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
out1 = new PrintWriter(new OutputStreamWriter(socket.getOutputStream(), StandardCharsets.UTF_8),true);
} else {
out1 = new PrintWriter(new OutputStreamWriter(socket.getOutputStream(), "UTF8"), true);
}
回答by dave110022
Don't user PrintWriter. If you need UTF-8 encoding, just write direct to the OutputStream.
不要使用 PrintWriter。如果需要UTF-8编码，直接写入OutputStream即可。
csocket.getOutputStream().write(res.getBytes("UTF-8"));
回答by Krzysztof
OutputStream os = new FileOutputStream("file.txt");
PrintWriter pw = new PrintWriter(new OutputStreamWriter(os, "UTF-8"));
