表单提交get和post

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一 get和post的区别

 

二 实战（post方式提交）

1、login.jsp

<%@  page  language = "java"  import = "java.util.*"  contentType = "text/html; charset=utf-8"  %>

<%

String path = request.getContextPath();

String basePath = request.getScheme()+ "://" +request.getServerName()+ ":" +request.getServerPort()+path+ "/" ;

%>

 

DOCTYPE  HTML  PUBLIC  "-//W3C//DTD HTML 4.01 Transitional//EN">

< html >

   < head >

     < base  href = " <%= basePath %> " >

   

     < title > My JSP 'login.jsp' starting page title >

   

         < meta  http-equiv = "pragma"  content = "no-cache" >

         < meta  http-equiv = "cache-control"  content = "no-cache" >

         < meta  http-equiv = "expires"  content = "0" >    

         < meta  http-equiv = "keywords"  content = "keyword1,keyword2,keyword3" >

         < meta  http-equiv = "description"  content = "This is my page" >

        

 

   head >

 

   < body >

     < h1 > 用户登录 h1 >

     < hr >

     < form  action = "dologin.jsp"  name = "loginForm"  method = "post" >

      < table >

        < tr >

          < td > 用户名： td >

          < td >< input  type = "text"  name = "username" /> td >

        tr >

        < tr >

          < td > 密码： td >

          < td >< input  type = "password"  name = "password" /> td >

        tr >

        < tr >

          < td  colspan = "2" >< input    type = "submit"  value = "登录" > td >

        tr >

      table >

     form >

   body >

html >

2、dologin.jsp

<%@  page  language = "java"  import = "java.util.*"  contentType = "text/html; charset=utf-8" %>

<%

String path = request.getContextPath();

String basePath = request.getScheme()+ "://" +request.getServerName()+ ":" +request.getServerPort()+path+ "/" ;

%>

 

DOCTYPE  HTML  PUBLIC  "-//W3C//DTD HTML 4.01 Transitional//EN">

< html >

   < head >

     < base  href = " <%= basePath %> " >

   

     < title > My JSP 'dologin.jsp' starting page title >

   

         < meta  http-equiv = "pragma"  content = "no-cache" >

         < meta  http-equiv = "cache-control"  content = "no-cache" >

         < meta  http-equiv = "expires"  content = "0" >    

         < meta  http-equiv = "keywords"  content = "keyword1,keyword2,keyword3" >

         < meta  http-equiv = "description"  content = "This is my page" >

        

 

   head >

 

   < body >

     < h1 > 登录成功 h1 >

     < hr >

   body >

html >

 

三 运行结果

 

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