The submission of the form and manner GET POST What is the difference between

Posted by john
1/25/2007
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what is xhtml  what is the w3c  w3c form w3c detection  what is the css 

  The submission of the form and manner POST GET What is the difference? 

  Solutions: 

  The difference between the form needed to see before, mainly in the form of data sent and received on the way. 

  Concrete steps: 

  Post and Get all of the optional form of Method attributes, the default values for Method Get, the main difference between the two: 

  1. Client, Get in the way through the url submission of data submitted after the address in the address bar as shown in Figure 1.4.3. 

  Figure 1.4.3 Get submission form after the address bar 

  The Post submitted to the same column, as shown in Figure 1.4.4. 

  Figure 1.4.4 Post submission of the form after the address bar unchanged 

  2. Server can only use Request.QueryString Get access to the data submitted by the Post submission of data to be used Request.Form access: 

  <% @ Language = "VBScript" Codepage = "936"%> 
<html>
<head>
  <title> Form to the testing </ title> 
  <meta Http-equiv="Content-Type" content="text/html; charset=gb2312"> 
  </ Head> 
<body>
  <Form method = "post" action ="<%= Request.ServerVariables ( "Script_Name ")%>"> 
  Submit data: 
  <input Name="oStr" type="text"> 
<br>
  Submitted by: 
  <select Name="select" onchange="this.form.method=this.value"> 
  <option Value="Post" selected> Post </ option> 
  <option Value="Get"> Get </ option> 
  </ Select> 
<br>
  <input Type="submit" name="Submit" value="Submit"> 
  </ Form> 
<%
  If Request ( "Submit ")<>"" then 
  Response.Write "through" & Request.ServerVariables ( "Request_Method") & "submission of the data:" 
  If Request.ServerVariables ( "Request_Method") = "GET" then 
  Response.Write Request.QueryString ( "oStr") 
  Else 
  Response.Write Request.Form ( "oStr") 
  End if 
  End if 
%>
  </ Body> 
  </ Html> 

  Note: Although the two methods can be integrated with the Request ( "oStr") to obtain the data, but it affected the efficiency of the process, not recommended. 

  Special Note 

  IIS running through the case of the code (using http://localhost/method.asp this way here, the installation and configuration of IIS, please refer to Part IV), the importation of the data submitted, select Post submission will be read to the effect shown in Figure 1.4.4.    Get submission choice, the effect will be as shown in Figure 1.4.3. 

  Special Note 

  In general, try to avoid using Get submission form, as this may lead to safety problems.    For instance, on the landing Get used forms, user input is the user name and password in the address bar will be completely exposed.    But in the paging process, the methods used to Get Post than good.    In the case of the form used to explain the properties of ASP (Please refer to Part IV): 

  Get the action attribute parameters added to the designated address, and open the way to anchor. 

  Post sent through HTTP post processing of data. 

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