welcomeservlet3.java

来自「java web services how to program」· Java 代码 · 共 51 行

JAVA
51 行
字号 
// Fig. A.13: WelcomeServlet3.java
// Processing post requests containing data.
package com.deitel.jws.servlets;

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

public class WelcomeServlet3 extends HttpServlet {   

   // process "post" request from client
   protected void doPost( HttpServletRequest request, 
      HttpServletResponse response )
         throws ServletException, IOException 
   {
      String firstName = request.getParameter( "firstname" );
      
      response.setContentType( "text/html" );
      PrintWriter out = response.getWriter();  
      
      // send XHTML page to client

      // start XHTML document
      out.println( "<?xml version = \"1.0\"?>" );

      out.println( "<!DOCTYPE html PUBLIC \"-//W3C//DTD " +
         "XHTML 1.0 Strict//EN\" \"http://www.w3.org" +
         "/TR/xhtml1/DTD/xhtml1-strict.dtd\">" ); 

      out.println( 
         "<html xmlns = \"http://www.w3.org/1999/xhtml\">" );
       
      // head section of document
      out.println( "<head>" );
      out.println( 
         "<title>Processing post requests with data</title>" );
      out.println( "</head>" );
      
      // body section of document
      out.println( "<body>" );
      out.println( "<h1>Hello " + firstName + ",<br />" );
      out.println( "Welcome to Servlets!</h1>" );
      out.println( "</body>" );
      
      // end XHTML document
      out.println( "</html>" );
      out.close();  // close stream to complete the page
   }   
}

welcomeservlet3.java - 源码说明

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