日期:2014-05-18  浏览次数:20629 次

恳请高手帮忙 问个简单的初级问题
这个是welcome.html放在root(tomcat6.0)目录下
<html>
<head> <title> Welcome   you! <title> </head>
<body>
<form   action= "welcome "   method= "get ">
请输入姓名 <input   type= "text "   name= "user ">
<input   type= "submit "   value= "提交 ">
</form>
</body>
</html>
下面是写的servlet       WelcomeYou.java    
import   java.io.IOException;
import   java.io.PrintWriter;
import   javax.servlet.*;
import   javax.servlet.http.*;
public   class   WelcomeYou   extends   HttpServlet
{
public   void   doGet(HttpServletRequest   req,HttpServletResponse   resp)throws   IOException
{
String   user=req.getParameter( "user ");
String   welcomeInfo= "welcome   you   "+user;
resp.setContentType( "text/html ");
PrintWriter   out=resp.getWriter();
out.println( " <html> <head> <title> ");
out.println( "Welcome   Page ");
out.println( " <title> <head> ");
out.println( " <body> ");
out.println(welcomeInfo);
out.println( " <body> <html> ");
out.close();
}
}
编译后的class文件放在了root目录下的WEB-INF目录下的classes目录下
WEB-INF的下的web.xml我配置如下
<?xml   version= "1.0 "   encoding= "ISO-8859-1 "?>
<!--
  Licensed   to   the   Apache   Software   Foundation   (ASF)   under   one   or   more
    contributor   license   agreements.     See   the   NOTICE   file   distributed   with
    this   work   for   additional   information   regarding   copyright   ownership.
    The   ASF   licenses   this   file   to   You   under   the   Apache   License,   Version   2.0
    (the   "License ");   you   may   not   use   this   file   except   in   compliance   with
    the   License.     You   may   obtain   a   copy   of   the   License   at

            http://www.apache.org/licenses/LICENSE-2.0

    Unless   required   by   applicable   law   or   agreed   to   in   writing,   software
    distributed   under   the   License   is   distributed   on   an   "AS   IS "   BASIS,
    WITHOUT   WARRANTIES   OR   CONDITIONS   OF   ANY   KIND,   either   express   or   implied.
    See   the   License   for   the   specific   language   governing   permissions   and
    limitations   under   the   License.
-->

<web-app   xmlns= "http://java.sun.com/xml/ns/javaee "
      xmlns:xsi= "http://www.w3.org/2001/XMLSc