web.xml配置文件

    
      
           
      
       email
            
      
       liwen@wen.com
        
         
           
      
       tel
            
      
       13888888888888
         
     
    

java文件

import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletContext;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class webDme extends HttpServlet {    public void doGet(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        //取得对象         ServletContext context = this.getServletContext();         //从web.xml获取元素        String email =  context.getInitParameter("email");        String tel =  context.getInitParameter("tel");        if(email != null && tel != null)        {        //如果是中文需要加上这个，否则出现乱码            response.setContentType("text/html;charset=UTF-8");            response.getWriter().write("李玟邮箱："+email+"
");            response.getWriter().write("李玟电话："+tel+"
");        }    }}

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