drools规则出现中文验证 与jvm 默认编码（The default charset is determined during virtual-machin

Charset

service mysql start

方式启动自己的 java  应用也会出现编码问题。

Java uses a native call to list the contents of a directory. The underlying C runtime relies on the locale concept to build Java  String s from the byte blob stored by the filesystem as the filename.

When you execute a Java program from a shell (either as a privileged user or an unprivileged one) it carries an environment made of variables. The variable  LANG is read to transcode the stream of bytes to a Java String, and by default on Ubuntu it's associated to the UTF-8 encoding.

Note that a process need not to be run from any shell, but looking at the code it seems that Upstart is smart enough to understand when the command in the configuration file is intended to be executed from a shell. So, assuming that the JVM is invoked through a shell, the problem is that the variable LANG is not set, so the C runtime assumes a default charset, which happens to  not be UTF-8. The solution is in the Upstart stanza:

description "List UTF-8 encoded filenames"
author "Raffaele Sgarro"
env LANG=en_US.UTF-8
script
  cd /workspace
  java -jar list.jar test > log.txt
end script

I used en_US.UTF-8 as the locale, but any UTF-8 backed one will do just as well. The sources of the test  list.jar

public static void main(String[] args) {
    for (File file : new File(args[0]).listFiles()) {
        System.out.println(file.getName());
    }
}

The directory /workspace/test contains filenames like  ààà ,  èèè and so on. Now you can move to the database part ;)