java Maven 默认语言环境与操作系统语言环境不同
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Maven default locale not same with OS locale
提问by Koray Tugay
When I type
当我打字
mvn --version
in command prompt I see:
在命令提示符中我看到：
Default Locale : en_US
默认语言环境：en_US
However my System Locale is tr_TR
但是我的系统区域设置是 tr_TR
When I start a Java SE Project without maven and run Locale.getDefault() tr_TR returns fine. But when I run a Maven project and then Locale.getDefault() it returns en_US which I do not like.
当我在没有 maven 的情况下启动 Java SE 项目并运行 Locale.getDefault() 时，tr_TR 返回正常。但是当我运行一个 Maven 项目然后 Locale.getDefault() 它返回我不喜欢的 en_US 。
How can I tell maven that my default locale is TR ?
我如何告诉 Maven 我的默认语言环境是 TR ？
回答by Oscerd
You can use this command
你可以使用这个命令
set MAVEN_OPTS= -Duser.language=tr
Anyway the best solution is to put these informations in the POM file and never by command line. In particular you have to deal with the configuration of Maven-Surefire-Plugin
无论如何，最好的解决方案是将这些信息放在 POM 文件中，而不是通过命令行。特别是你必须处理Maven-Surefire-Plugin的配置
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.9</version>
<configuration>
<systemPropertyVariables>
<user.language>tr</user.language>
<user.region>TR</user.region>
</systemPropertyVariables>
</configuration>
</plugin>
Second Question:Another question if I may, I am running a web app in my locale but it supports lets say german, english.. And your system locale is DE. Can I get your system locale from your request? Or maybe the language you prefer by your browser?
第二个问题：另一个问题，如果可以的话，我正在我的语言环境中运行一个网络应用程序，但它支持让我们说德语，英语......你的系统语言环境是 DE。我可以从您的请求中获取您的系统区域设置吗？或者也许是您的浏览器更喜欢的语言？
You can take these informations from the request. Here is an example in a servlet.
您可以从请求中获取这些信息。这是 servlet 中的一个示例。
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.Locale;
public class GetLocale extends HttpServlet{
public void doGet(HttpServletRequest request,HttpServletResponse response)throws ServletException, IOException
{
Locale locale = request.getLocale();
String language = locale.getLanguage();
String country = locale.getCountry();
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println(language + ":" + country);
}
}
回答by Sergio Lema
You can also use
你也可以使用
<properties>
<argLine>-Duser.language=tr</argLine>
</properties>
This case works better when the argument is needed at the start of the JVM, as using maven-surefire-plugin, your JVM is already running and the arguments won't be reloaded (that was my case using some initialization with @RunWith(SpringRunner.class)and @SpringBootTestto initialize a MockMvc).
这种情况在 JVM 启动时需要参数时效果更好，因为使用maven-surefire-plugin，您的 JVM 已经在运行并且不会重新加载参数（这是我使用一些初始化@RunWith(SpringRunner.class)和@SpringBootTest初始化 a 的情况MockMvc）。
回答by Mike Reiche
Defining the property allows you to pass them as command line argument.
定义属性允许您将它们作为命令行参数传递。
This works for me:
这对我有用：
<project>
<properties>
<user.language>de</user.language>
<argLine>-Duser.language=${user.language}</argLine>
</properties>
</project>
mvn -Duser.language=tr
