Question

如何让PrintWriter写入UTF-8？

pstream = new PrintWriter(csocket.getOutputStream(), true);
String res = "some string";
pstream.println(res); // here I want to output string as UTF-8

Answer 1

使用OutputStreamWriter：

pstream = new PrintWriter(new OutputStreamWriter(
    csocket.getOutputStream(), StandardCharsets.UTF_8), true)

Answer 2

OutputStream os = new FileOutputStream("file.txt");
PrintWriter pw = new PrintWriter(new OutputStreamWriter(os, "UTF-8"));

Answer 3

查看Java: Difference between PrintStream and PrintWriter讨论。

要快速：您可以使用-Dfile.encoding = utf8 JVM参数或讨论中建议的方法（参见第二个答案）。

Answer 4

请勿使用PrintWriter。如果您需要UTF-8编码，只需直接写入OutputStream。

csocket.getOutputStream().write(res.getBytes("UTF-8"));

Answer 5

while *script_first_ran_time*!=*script_first_ran_time+30minutes*

Answer 6

您只能使用任何字符集写入文件，否则使用平台默认字符集请参阅doc

如何让PrintWriter编写UTF-8？

6 个答案: