Question

我想在java中获取当前的国家/地区名称。我使用这段代码。

private HttpServletRequest request; 
Locale currentCountry = request.getLocale();  
System.out.println(currentCountry.getDisplayCountry());

但它通过NullPointerException如引发：java.lang.NullPointerException。在第二行。请帮助我。

Answer 1

代码片段不足以说明你为什么得到Null Pointer。我假设您在服务器端使用servlet。

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;
import java.util.Locale;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.HttpServletBean;

public class MyServlet extends HttpServletBean {

    private static final long serialVersionUID = 1L;

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws IOException, ServletException {

        PrintWriter out = response.getWriter();

        Locale userlocale = request.getLocale();
        out.println("Your Country : " + userlocale.getCountry());

        out.println();
        out.println("");
    }
}

如何获取java中的当前国家名称？

1 个答案: