pragma no cache

1. Every time you open the page, you should clear the cache of this pageWhen the page opens, due to the presence of the cache, the newly updated data can sometimes not be refreshed on the page, which is more noticeable when the page opens as a modal

c/S is a client/server, b/S is a browser/server.IPv4 192.168 ..... (intranet IP) through the router's NAT (maintains a table, used to convert IP corresponding to the extranet).When the IPv6 is promoted, no routers are used.Communication

If Request.QueryString ("action") thenOption ExplicitResponse.buffer=trueNumcodeDim znumFunction Numcode ()Response.Expires =-1Response.AddHeader "Pragma", "No-cache"Response.AddHeader "Cache-ctrol", "No-cache"Dim znum,i,jDim ados,ados1Randomize

To preview the Word document online, just start thinking about turning Word into a PDF file and then opening the PDF document directly in the browser.But the project was deployed under Linux, and searching the internet did not find a suitable method,

public static Class Download_html{private static int failcount = 0; Record the number of failed downloadspublic static string gethtml (string URL)//incoming URL to download{String str = string. Empty;Try{System.Net.WebRequest request =

When accessing a Web resource, there is no corresponding result, it is possible that the filter does not release resourcesStatic and dynamic resources are handled differently by the code as follows: Does the ====NO2 segment end with a JSPImport Java.

The verification code used by Google's Kaptcha, on his basis removed the fuzzy attributes, and the official jar package is different. No nonsense, stick code. 9

pragma and No-cacheUsed to define the page cache and not cache pages (to speed up some browsers will cache the pages viewed by the viewer, as defined below, browsers generally do not cache pages, and browsers cannot browse offline.)Its function is

A response content The response protocol format is as follows响应首行响应头信息空行响应体 For exampleRequest url:http://127.0.0.1:8090/login/request method:getstatus code:200 OKRemote address:127.0.0.1:8090response Headersview sourcecontent-type:text/html;

Ajax Request Code:Zone Event Select the distribution point function changedistrict (value) {if (value = = 0) {$ (' #transport_node '). empty (); $ (' #transport_node '). Append (' Please select '); Return } $ (' #transport_node '). empty (); $

1 using the servlet to implement the verification code, the knowledge points involved in Java drawing technology and session to save data.HTML page1 HTML>2 Imagesrc= ' images/logo1.jpg '/>HR/>3 Head>BR/>title>Logintitle> BR/>H1>Welcome to

Content mainly transferred from: http://www.cnblogs.com/linjiqin/archive/2011/07/20/2111627.htmlJSP page Disable cache settings1. Client-side caching to include in similar to the following:Or2. Disable caching in the Dynamic Web page of the server,

in advance, this character has no problem, just a friend to send a Python source code, and then share everyone here. 1 ImportRequests2 fromlxmlImportHTML3 ImportOS4 fromMultiprocessing.dummyImportPool as ThreadPool5 6 defHeader (referer):7headers =

Generate 4 random numbers and clutter background pictures, the number and background color will change, server-side refresh (with History.go (-1) will also change)Prototype reference Alibaba Http://china.alibaba.com/member/showimage The file that

Many systems now register, log in or publish information modules are added to the random code function, is to avoid automatic registration program or the use of automatic publishing programs. The verification code is actually randomly select some

Copy Code code as follows: java.awt.image.*,java.util.*,javax.imageio.*%> Color getrandcolor (int fc,int BC) {///given range get random color         Random Random = new Random ();         if (fc>255) fc=255;         if (bc>255) bc=2

1,common.jsp Copy Code code as follows: Response.setheader ("Cache-control", "No-store"); HTTP 1.1 Response.setheader ("Pragma", "No-cache"); HTTP 1.0 Response.setdateheader ("Expires", 0); %>

image.jsp------------------------------A JSP page that generates random CAPTCHA pictures The code is as follows: Copy Code code as follows: Java.awt.image.*,java.util.*,javax.imageio.* "%> Color getrandcolor (int fc,int BC) { Random

Recently it is too popular collection, I do not like to collect, but the principle of collection I am very interested in research, got the online collection of commonly used functions, on its research, and actual combat, the results of success,

Content-disposition is an extension of the MIME protocol, which indicates how the MIME user agent displays the attached file. Content-disposition In fact, you can control the content of the user request to save as a file when a default file name is