this is a extra element for clear the floated element
应用Java技术开发WAP应用程序
  • 12/31
  • 2008
无线开发 | Java 2185 次查看
  我们还是采用Tomcat作为web服务器,如果你对如何使用tomcat还不熟悉请参考Tomcat入门指南。通常我们开发WAP应用程序的时候都是手写wml脚本,其实我们可以借助java的Servlet/jsp技术开发WAP应用程序。通常我都是使用Lomboz插件在eclipse的环境下写servlet/jsp文件的。先看下面的waptest.jsp文件和WapServlet.java文件

  <?xml version="1.0"?>

  <!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN"

  "http://www.wapforum.org/DTD/wml_1.1.xml">

  <%

  response.setContentType("text/vnd.wap.wml");

  out.println("<wml>");

  out.println("<card title=\"MobileDate\">");

  out.println(" <p align=\"center\">");

  out.println("Date and Time Service<br/>");

  out.println("Date is: "+ new java.util.Date());

  out.println("</p>");

  out.println("</card>");

  out.println("</wml>");

  %>

  package com.j2medev.mingjava;

  import java.io.IOException;

  import java.io.PrintWriter;

  import javax.servlet.ServletException;

  import javax.servlet.http.HttpServlet;

  import javax.servlet.http.HttpServletRequest;

  import javax.servlet.http.HttpServletResponse;

  public class WapServlet extends HttpServlet

  {

  protected void doGet(HttpServletRequest request,

  HttpServletResponse response) throws ServletException, IOException

  {

  response.setContentType("text/vnd.wap.wml");

  PrintWriter out = response.getWriter();

  out.println("<?xml version=\"1.0\"?>");

  out.println("<!DOCTYPE wml PUBLIC\"-//WAPFORUM//DTD WML 1.1//EN\"");

  out.println("\"http://www.wapforum.org/DTD/wml_1.1.xml\">");

  out.println("<wml>");

  out.println("<card title=\"MobileDate\">");

  out.println(" <p align=\"center\">");

  out.println("Date and Time Service<br/>");

  out.println("Date is: " + new java.util.Date());

  out.println("</p>");

  out.println("</card>");

  out.println("</wml>");

  }

  protected void doPost(HttpServletRequest request,

  HttpServletResponse response) throws ServletException, IOException

  {

  doGet(request,response);

  }

  }

  这两个文件实现的功能是一样的,显示服务器当前的时间。我们的web.xml的内容如下:

  <?xml version="1.0" ?>

  <!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>WapServlet</servlet-name>

  <servlet-calss>com.j2medev.mingjava.WapServlet</servlet-class>

  </servlet>

  <servlet-mapping>

  <servlet-name>WapServlet</servlet-name>

  <url-pattern>/wapservlet</url-pattern>

  </servlet-mapping>

  <welcome-file-list>

  <welcome-file>index.jsp</welcome-file>

  </welcome-file-list>

  <error-page>

  <error-code>404</error-code>

  <location>/error.jsp</location>

  </error-page>

  </web-app>

  使用Lomboz我们可以很方便的把这个应用程序发布到tomcat的webapps目录,通过WinWap我们可以直接通过下面两个URL访问到他们

  http://localhost:8088/wap/wapservlet

  http://localhost:8088/wap/waptest.jsp
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