Servlet Unicode : Internationlization I18N « Servlet « Java Tutorial

1. Java Tutorial
2. Servlet
3. Internationlization I18N

import java.io.*;
import java.text.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class MyServlet extends HttpServlet {

  public void doGet(HttpServletRequest req, HttpServletResponse res)
                               throws ServletException, IOException {
    Locale locale;
    DateFormat full;

    try {
      res.setContentType("text/plain; charset=UTF-8");
      //PrintWriter out = res.getWriter();
      PrintWriter out = new PrintWriter(
        new OutputStreamWriter(res.getOutputStream(), "UTF8"), true);

      locale = new Locale("en", "US");
      full = DateFormat.getDateTimeInstance(DateFormat.LONG, 
                                            DateFormat.LONG,
                                            locale);
      out.println("In English appropriate for the US:");
      out.println("Hello World!");
      out.println(full.format(new Date()));
      out.println();

      locale = new Locale("es", "");
      full = DateFormat.getDateTimeInstance(DateFormat.LONG, 
                                            DateFormat.LONG,
                                            locale);
      out.println("En Espa\u00f1ol:");
      out.println("\u00a1Hola Mundo!");
      out.println(full.format(new Date()));
      out.println();

      locale = new Locale("ja", "");
      full = DateFormat.getDateTimeInstance(DateFormat.LONG,
                                            DateFormat.LONG,
                                            locale);
      out.println("In Japanese:");
      out.println("\u4eca\u65e5\u306f\u4e16\u754c");
      out.println(full.format(new Date()));
      out.println();

      locale = new Locale("zh", "");
      full = DateFormat.getDateTimeInstance(DateFormat.LONG,
                                            DateFormat.LONG,
                                            locale);
      out.println("In Chinese:");
      out.println("\u4f60\u597d\u4e16\u754c");
      out.println(full.format(new Date()));
      out.println();

      locale = new Locale("ko", "");
      full = DateFormat.getDateTimeInstance(DateFormat.LONG,
                                            DateFormat.LONG,
                                            locale);
      out.println("In Korean:");
      out.println("\uc548\ub155\ud558\uc138\uc694\uc138\uacc4");
      out.println(full.format(new Date()));
      out.println();

      locale = new Locale("ru", "");
      full = DateFormat.getDateTimeInstance(DateFormat.LONG,
                                            DateFormat.LONG,
                                            locale);
      out.println("In Russian (Cyrillic):");
      out.print("\u0417\u0434\u0440\u0430\u0432\u0441\u0442");
      out.println("\u0432\u0443\u0439, \u041c\u0438\u0440");
      out.println(full.format(new Date()));
      out.println();
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }
}

<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>

    <servlet><servlet-name>MyServletName</servlet-name>
             <servlet-class>MyServlet</servlet-class>
    </servlet>
    
    <servlet-mapping><servlet-name>MyServletName</servlet-name>
        <url-pattern>*.htm</url-pattern>
    </servlet-mapping>

  <context-param>
    <param-name>javax.servlet.jsp.jstl.fmt.timeZone</param-name>
    <param-value>US/Central</param-value>
  </context-param>

  <context-param>
    <param-name>database-driver</param-name>
    <param-value>org.gjt.mm.mysql.Driver</param-value>
  </context-param>

  <context-param>
    <param-name>database-url</param-name>
    <param-value>
    jdbc:mysql://localhost/forum?user=forumuser</param-value>
  </context-param>

  <taglib>
    <taglib-uri>http://java.sun.com/jstl/fmt</taglib-uri>
    <taglib-location>/WEB-INF/fmt.tld</taglib-location>
  </taglib>

  <taglib>
    <taglib-uri>http://java.sun.com/jstl/fmt-rt</taglib-uri>
    <taglib-location>/WEB-INF/fmt-rt.tld</taglib-location>
  </taglib>

  <taglib>
    <taglib-uri>http://java.sun.com/jstl/core</taglib-uri>
    <taglib-location>/WEB-INF/c.tld</taglib-location>
  </taglib>

  <taglib>
    <taglib-uri>http://java.sun.com/jstl/core-rt</taglib-uri>
    <taglib-location>/WEB-INF/c-rt.tld</taglib-location>
  </taglib>

  <taglib>
    <taglib-uri>http://java.sun.com/jstl/sql</taglib-uri>
    <taglib-location>/WEB-INF/sql.tld</taglib-location>
  </taglib>

  <taglib>
    <taglib-uri>http://java.sun.com/jstl/sql-rt</taglib-uri>
    <taglib-location>/WEB-INF/sql-rt.tld</taglib-location>
  </taglib>

  <taglib>
    <taglib-uri>http://java.sun.com/jstl/x</taglib-uri>
    <taglib-location>/WEB-INF/x.tld</taglib-location>
  </taglib>

  <taglib>
    <taglib-uri>http://java.sun.com/jstl/x-rt</taglib-uri>
    <taglib-location>/WEB-INF/x-rt.tld</taglib-location>
  </taglib>

  <taglib>
    <taglib-uri>
    http://java.jeffheaton.com/taglib/jstl/forum</taglib-uri>
    <taglib-location>/WEB-INF/forum.tld</taglib-location>
  </taglib>

  <taglib>
    <taglib-uri>/tlt</taglib-uri>
    <taglib-location>/WEB-INF/taglib.tld</taglib-location>
  </taglib>
</web-app>

25.24.Internationlization I18N
	25.24.1.	Servlet UTF8 Page
	25.24.2.	Servlet Unicode Escape String
	25.24.3.	Servlet Unicode
	25.24.4.	Servlet Spanish
	25.24.5.	Servlet I18N: Read From File
	25.24.6.	Servlet I18N: Page Header
	25.24.7.	Japanese Hello World Servlet
	25.24.8.	Locale Information Servlet
	25.24.9.	Set content type to charset=ISO-8850-1
	25.24.10.	Locale Session Servlet