运行Java bat文件时出错

Question

When i am starting my bat file:

@echo off
title x
:start
echo.
java -server -Dfile.encoding=UTF-8 -Xms64m -Xmx64m -Xbootclasspath/p:../libs/l2ft.jar -    cp config/xml;../libs/*; l2ft.loginserver.AuthServer
if ERRORLEVEL 2 goto restart
if ERRORLEVEL 1 goto error
goto end
:restart
echo Restarted ...
goto start
:error
echo Terminated abnormaly ...
:end
echo Terminated ...

I am getting strange error:

Error occurred during initialization of VM
java.nio.charset.UnsupportedCharsetException: UTF-8
    at java.nio.charset.Charset.forName(Unknown Source)
    at java.nio.charset.Charset.defaultCharset(Unknown Source)
    at sun.nio.cs.StreamEncoder.forOutputStreamWriter(Unknown Source)
    at java.io.OutputStreamWriter.<init>(Unknown Source)
    at java.io.PrintStream.<init>(Unknown Source)
    at java.io.PrintStream.<init>(Unknown Source)
    at java.lang.System.initializeSystemClass(Unknown Source)

I have tried to reinstall java jdk, i have got default encoding in bat file already: -Dfile.encoding=UTF-8, so i dont know whats the solution for the problem.

Answer 1

I found the solution. In the jar that contained AuthServer, were a lot of russian characters that UTF-8 doesnt support. After removing each of those characters and recompiling, problem was gone. Jar file of my friend also contained those characters, but it was working without a problems. I dont know how, but thats not important now, since the problem is gone.

Answer 2

It looks like your Java doesn't support UTF-8, which is really strange, because every Java should support it according to the documentation of the Charset class .

Try to run this code to make sure that UTF-8 is really not supported.

import java.nio.charset.Charset;

public class TestCharset {
    public static void main(String[] args) {
        System.out.println(Charset.forName("UTF-8"));
    }
}

If UTF-8 is not supported, it should throw an exception.

You may also try it with UTF8 instead of UTF-8 just in case your use an incorrect hyphen character. UTF-8 is correct according to the specs, but UTF8 works on my machine as well.

Answer 3

I am not sure about your p:../libs/l2ft.jar, that is not a right path. Try to replace your current line with this:

java -server -Dfile.encoding=UTF-8 -Xms64m -Xmx64m -cp p:../libs/l2ft.jar;config/xml;../libs/* l2ft.loginserver.AuthServer

just be sure to replace "p:../libs/l2ft.jar" with a proper path where the l2ft.jar resides.