作者：asp2001
email: asp2001@163.net
日期：2000-08-03 21:07:10
先看這個例子 
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class WapServlet extends HttpServlet
{

 protected void service(HttpServletRequest request,
                        HttpServletResponse response)
                    throws ServletException, java.io.IOException
  {
    response.setContentType("text/vnd.wap.wml");
    PrintWriter out = response.getWriter();

    xmlHeader(out);
    out.println("<wml>");
    out.println("<card title = \"JavaTest\">");
    out.println("<p>Hello! This comes from a servlet!</p>");
    out.println("</card>");
    out.println("</wml>");


  }

  public void  xmlHeader(PrintWriter out)
  {
    out.println("<?xml version=\"1.0\"?>");
    out.println("<!DOCTYPE wml PUBLIC \"-//WAPFORUM//DTD WML 1.1//EN\" "+
                "\"http://www.wapforum.org/DTD/wml_1.1.xml\">");
  }
}

第一個Servlet程序（Servlet例子，僅適合于安裝了標準Package 1.0的Nokia Server） 
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
/*
* HelloWorldServlet - a very simple servlet
*/

public class HelloWorld extends HttpServlet
{
String m_text;
// the initialization parameter is read during
// the initialization of the servlet

public void init(ServletConfig config) throws ServletException
{
    super.init(config);
    m_text = config.getInitParameter("text");
    if (m_text == null)
    {
        m_text = "This is a simple test servlet.";
    }
}

public void doGet(HttpServletRequest request,HttpServletResponse response) throws IOException, ServletException
{
    PrintWriter out = response.getWriter();
    out.println("<?xml version=\"1.0\"?>");
    out.println("<!DOCTYPE wml PUBLIC \"-//WAPFORUM//DTD WML1.1//EN\"\"http://www.wapforum.org/DTD/wml_1.1.xml/">");
    out.println("<wml>");
    out.println("<card id=\"card1\" title=\"Hello World\">");
    out.println("<p>");

    out.println(m_text);
    out.println("</p>");
    out.println("</card>");
    out.println("</wml>");
    // Remember to close the out object
    out.close();
}

public String getServletInfo()
{
    return "The simple HelloWorld servlet.";
}

}

　 
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