三个概念
- 国际化: 意义着一个网站提供不同版本的翻译成访问者的语言或国籍的内容。
- 本地化: 意味着向网站添加资源,以使其适应特定的地理或文化区域。
- 区域设置: 针对某个国家的某个地区的设置。
Servlet可以根据请求者的区域设置时区相应版本的网站,并根据当地的语言、文化和需求提供相应的网站版本,
request返回Locale对象
java.util.Locale request.getLocale();
检测区域设置
序号 | 方法 & 描述 |
---|---|
1 | String getCountry() 该方法以 2 个大写字母形式的 ISO 3166 格式返回该区域设置的国家/地区代码。 |
2 | String getDisplayCountry() 该方法返回适合向用户显示的区域设置的国家的名称。 |
3 | String getLanguage() 该方法以小写字母形式的 ISO 639 格式返回该区域设置的语言代码。 |
4 | String getDisplayLanguage() 该方法返回适合向用户显示的区域设置的语言的名称。 |
5 | String getISO3Country() 该方法返回该区域设置的国家的三个字母缩写。 |
6 | String getISO3Language() 该方法返回该区域设置的语言的三个字母的缩写。 |
GetLocale.java
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{// 获取客户端的区域设置Locale locale = request.getLocale();String language = locale.getLanguage();String country = locale.getCountry();// 设置响应内容类型response.setContentType("text/html");PrintWriter out = response.getWriter();String title = "检测区域设置";String docType ="<!doctype html public \"-//w3c//dtd html 4.0 " + "transitional//en\">\n";out.println(docType +"<html>\n" +"<head><title>" + title + "</title></head>\n" +"<body bgcolor=\"#f0f0f0\">\n" +"<h1 align=\"center\">" + language + "</h1>\n" +"<h2 align=\"center\">" + country + "</h2>\n" +"</body></html>");}
}
语言设置
DisplaySpanish.java
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.Locale;public class DisplaySpanish extends HttpServlet{public void doGet(HttpServletRequest request,HttpServletResponse response)throws ServletException, IOException{// 设置响应内容类型response.setContentType("text/html");PrintWriter out = response.getWriter();// 设置西班牙语言代码response.setHeader("Content-Language", "es");String title = "En Español";String docType ="<!doctype html public \"-//w3c//dtd html 4.0 " + "transitional//en\">\n";out.println(docType +"<html>\n" +"<head><title>" + title + "</title></head>\n" +"<body bgcolor=\"#f0f0f0\">\n" +"<h1>" + "En Español:" + "</h1>\n" +"<h1>" + "¡Hola Mundo!" + "</h1>\n" +"</body></html>");}
}
设置区域日期
DateLocale.java
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.Locale;
import java.text.DateFormat;
import java.util.Date;public class DateLocale extends HttpServlet{public void doGet(HttpServletRequest request,HttpServletResponse response)throws ServletException, IOException{// 设置响应内容类型response.setContentType("text/html");PrintWriter out = response.getWriter();// 获取客户端的区域设置Locale locale = request.getLocale( );String date = DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.SHORT, locale).format(new Date( ));String title = "特定于区域设置的日期";String docType ="<!doctype html public \"-//w3c//dtd html 4.0 " + "transitional//en\">\n";out.println(docType +"<html>\n" +"<head><title>" + title + "</title></head>\n" +"<body bgcolor=\"#f0f0f0\">\n" +"<h1 align=\"center\">" + date + "</h1>\n" +"</body></html>");}
}
设置区域的货币
采用NumberFormat.getCurrencyInstance()来格式化数字。
CurrencyLocale.java
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.Locale;
import java.text.NumberFormat;
import java.util.Date;public class CurrencyLocale extends HttpServlet{public void doGet(HttpServletRequest request,HttpServletResponse response)throws ServletException, IOException{// 设置响应内容类型response.setContentType("text/html");PrintWriter out = response.getWriter();// 获取客户端的区域设置Locale locale = request.getLocale( );NumberFormat nft = NumberFormat.getCurrencyInstance(locale);String formattedCurr = nft.format(1000000);String title = "特定于区域设置的货币";String docType ="<!doctype html public \"-//w3c//dtd html 4.0 " + "transitional//en\">\n";out.println(docType +"<html>\n" +"<head><title>" + title + "</title></head>\n" +"<body bgcolor=\"#f0f0f0\">\n" +"<h1 align=\"center\">" + formattedCurr + "</h1>\n" +"</body></html>");}
}
百分比区域化
PercentageLocale.java
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.Locale;
import java.text.NumberFormat;
import java.util.Date;public class PercentageLocale extends HttpServlet{public void doGet(HttpServletRequest request,HttpServletResponse response)throws ServletException, IOException{// 设置响应内容类型response.setContentType("text/html");PrintWriter out = response.getWriter();// 获取客户端的区域设置Locale locale = request.getLocale( );NumberFormat nft = NumberFormat.getPercentInstance(locale);String formattedPerc = nft.format(0.51);String title = "特定于区域设置的百分比";String docType ="<!doctype html public \"-//w3c//dtd html 4.0 " + "transitional//en\">\n";out.println(docType +"<html>\n" +"<head><title>" + title + "</title></head>\n" +"<body bgcolor=\"#f0f0f0\">\n" +"<h1 align=\"center\">" + formattedPerc + "</h1>\n" +"</body></html>");}
}