在java中输出为UTF-8编码 [英] output as UTF-8 encoding in java

问题描述

我使用eclipse将程序中的输出文件出现问题.i将我的eclipse设置为UTF-8，并使用

  System.getProperty（file.encoding）
  

我得到UTF-8.i运行我的程序通过eclipse运行选项和输出（文本文件）以UTF-8编码。但是当我将源代码压缩到一个jar文件中时，输出文件会在某些字母表中显示错误，如Ã.what就是这个diff当在eclipse和frm jar文件中删除prog时，我必须在我的源代码中指定要在utf-8中编码的输出？pls help。

help从@dacwe确实产生了所需的输出。但是我可以知道如何在命令行外运行我的可执行文件.jar文件？如何-Dfile.encoding = UTF-8

@dacwe：我尝试将源代码更改为

  BufferedWriter bout = new java.io.BufferedWriter（new java.io .OutputStreamWriter（
 new java.io.FileOutputStream（filename），UTF- 8\" ））; 
  

但是输出仍然没有正确编码。我想念这些东西？

@ div class =h2_lin>解决方案

在@Dave G的回答中进行了一些主要讨论后，

使用 java -Dfile.encoding = UTF-8 -jar your-jar-file.jar 。

将代码更新为@Dave G建议（和你的编辑）应该工作。

• 您是否真的重新包装了您的罐子？


• 您是否致电 close （）在 bout ？ （例如，可能您的文件未更新）

---

这是一个完整的例子可能会让你走：

  public static void main（String ... args）throws Exception {
 PrintWriter out =新的PrintWriter（新文件（hello.txt），UTF-8）; 
 out.print（用utf-8写）; 
 out.close（）; 
} 
  

I am having problem with the output file from a program using eclipse .i set my eclipse to UTF-8 and with

 System.getProperty("file.encoding") 

i get UTF-8.i ran my prog via eclipse run-option and the output (a text file) is encoded in UTF-8.but when i compressed the source code into a jar file,the output file shows error in some of the alphabet like Ã.what is with this diff when ruuning the prog in eclipse and frm jar file?and do i have to specify the output to be encoded in utf-8 in my source code?pls help.

help from @dacwe indeed produced the desired output.but may i know how can i run my executable .jar file outside command line?how can the -Dfile.encoding=UTF-8

@dacwe :i tried changing my source code into

 BufferedWriter bout  = new java.io.BufferedWriter(new java.io.OutputStreamWriter(
                new java.io.FileOutputStream(filename), "UTF-8"));

but the output still is not encoded correctly.anything i miss here?

解决方案

After some major discussion in @Dave G's answer!

Using java -Dfile.encoding=UTF-8 -jar your-jar-file.jar works.

Updating your code as @Dave G suggested (and your edit) should work.

• Have you really repackaged your jar?
• Do you call close() on bout? (e.g. maybe your file isn't updated)

---

Here is a full example that might get you going:

public static void main(String... args) throws Exception {
    PrintWriter out = new PrintWriter(new File("hello.txt"), "UTF-8");
    out.print("written in utf-8");
    out.close();
}

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