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'****************************** ' Function: Workdays (Date_begin, Date_end) ' Parameters: Date_begin, start date; Date_end, End date ' Author: Arisisi ' Date: 2007/7/15 ' Description: Calculates a two-time working day ' Example: Workdays ("2007-05-18", "2007-05-21") '****************************** function workdays (Date_begin, Date_end) Date_begin = CDate (date_begin) Date_end = CDate (date_end) If IsDate (Date_begin) and IsDate (Date_end) Then workd

Basic working principle of connection pool 1 , basic concepts and principlesAs can be seen from the above analysis, the root of the problem lies in the inefficient management of the database connection resources. We know that for shared resources, there is a well-known design pattern: resource pools (Resource pool). The pattern is to solve the problem of the frequent distribution of resources and the release of the resource. In order to solve the abo

A good Java programmer must understand how the GC works, how to optimize the performance of the GC, and how to interact with the GC in a limited way, because some applications have higher performance requirements, such as embedded systems, real-time systems, and so on, to improve the performance of the entire application only by improving the efficiency of memory management. This article first briefly introduces the working principle of GC, then discu

Struts2 Working principle STRUTS2 Request Response Process: In STRUTS2 applications, a number of components such as Controller, Actionproxy, actionmapping, Configuration Manager, and so on, are included in the process of returning the corresponding response to the server from the user request to the client. Actioninvocation, Inerceptor, Action, result and so on. Let's take a look at how these components relate to each other and how they work togeth

Strtus Working principle Made by Zhangxu 08.4.27 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ of traditional MVC Schema: JSP-----> View ( View ) Servlet------> Cotroller ( Control ) JavaBean-------> Model ( Model ) The traditional flowchart:

A Web server is also called an HTTP server because it communicates with its customers using the HTTP protocol, which is typically a browser. A java-based Web server uses two important classes: Java.net.Socket and Java.net.ServerSocket, and is communicated through HTTP messages. HTTP and these two classes are discussed at the beginning of this article, and later, the working mechanism of a simple Web server application is explained. 　　Hypertext Transfe

Article Description: How to understand our users – the wireless end-user understands how to share work methods. One, Preface After coming to Tencent, the iphone reader, ipad reader, ipad music player understanding of the user, is currently doing the iphone Qzone user understanding work. Do more times, methods in the continuous improvement, but also accumulated some experience, and share with you, hope to help us better understand the user. First, introduce the current North Divisi

Program | execution 1. System.Diagnostics.Process.GetCurrentProcess (). Mainmodule.filename Gets the full path of the module. 2. System.Environment.CurrentDirectory Gets and sets the fully qualified directory of the current directory (the directory from which the process starts). 3. System.IO.Directory.GetCurrentDirectory () Gets the current working directory of the application. This is not necessarily the directory from which the program starts, it

carrier and tools, but also can effectively enhance the visibility of their own website, so for SEO optimization is now very large market, and the cost is very low, of course, to do a good job SEO optimization, The simplest and most direct is from understanding what is the search engine started! 　　One: Look at the current search engine classification The first is a catalog search engine, the second is full-text search engine, the third is the Meta search engine, the second Full-text search en

+ + "Drive" + drvpath.touppercase () + "-"; S + + DRV. VolumeName + "S + + "total space:" + DRV. totalsize/1024; S + + "Kb" + "s + + "free space:" + DRV. freespace/1024; S + + "Kb" + "Response.Write (s); } Working with folders In the following table, you describe common folder tasks and how to execute them. Task methods Create a folder. Filesystemobject.createfolder Deletes a folder. Folder.Delete or Filesystemobject.deletefolder Move the folder. Fo

source code in the examples/spark/under the Yaml file to build, all Yaml files copied to the working directory. Modify Spark-master-controller.yaml and Spark-worker-controller.yaml:* Spec.template.spec.containers.command are modified to "/start.sh"* Spec.template.spec.containers.images modified to index.tenxcloud.com/google_containers/spark-master:1.5.2_ respectively V1 and INDEX.TENXCLOUD.COM/GOOGLE_CONTAINERS/SPARK-WORKER:1.5.2_V1 The mirror used b

token are passed through get data, the same token can be obtained for an attacker who gets the session ID. Therefore, the safer and more reliable way is to use two different data delivery methods to pass the session ID and token respectively. For example, pass the session ID through a cookie and pass the token through the get data. Therefore, if an attacker obtains this unique user identity by some means, it is unlikely that the token can be easily acquired at the same time, and it is relativel

Failure phenomenon:When using Lenovo's home, the pop-up dialog box prompts "DCProcess.exe has stopped working" and the system appears slow or freezes.Reason Analysis:This problem is usually a software error or a system problem.Solution: One, add le home to Data Execution protection 1. First select "My Computer" on the desktop and then right-click to select Properties. In the pop-up system properties, locate the Advanced tab. Select the

When we open the browser or open some Web pages, we run into a stop-work error prompt, as shown below. "Close Program" button, click the "Close" button to turn off the warning window, we can still use the normal, but so the production is not comfortable. The solution is shown below Enter IE browser at Natalie to open ie Open the IE Browser Internet Options window Then after the opening, we click on "Advanced"-"settings" to switch to the designated page after we click the "Bro

A word Trojan working principle: A Word Trojan Analysis server and client. "One word trojan" service end (is used for local HTML submission script Trojan file)Is the ASP statement that we are going to use to insert into the ASP file, (not only the database file with ASP as suffix), the statement will return to trigger, receive the data that the intruder submits through the client, execute and complete the corresponding operation, the service end code

original link: http://blog.csdn.net/laoyang360/article/details/8280478 first, the HTTP principle 1.HTTP Working principle (example Analysis): (HTTP server impersonation returned) Server-side Display results ... 2.HTTP Request Response (response) Message Interpretation (Http Analyzer V5 analysis Results) 2.1 HTTP Request message (header section) Get request: Is the information of the resource specified by the request URL as an

Working principleAbove is the schematic diagram of SPRINGMVC's work: 1, the client sends an HTTP request to the Web server, the Web server parses the HTTP request, If the request mapping path (specified in Web. xml) matches the Dispatcherservlet, the Web container will forward the request to Dispatcherservlet. 2. After receiving this request, Dipatcherservlet will find the processor (Handler) processing the request based on the requested information (

Wuhan SEO today wants to talk about search engine spider's working way. Let's talk about the principles of search engines. Search engine is the Web page content on the Internet on its own server, when the user search for a word, the search engine will be on their own server to find relevant content, so that is, only saved on the search engine server pages will be searched. Which Web pages can be saved to the search engine's servers? Only the search en

Experimental purposes: The ability to support subnets is called classless, and this pattern can be well coordinated with subnets. If subnets are not supported, they are called classful. When a router is working at classful, if a partial subnet in one of the main class networks is known, packets from all other unknown subnets will be discarded, even if there is a default route and will not be forwarded in the default route, and the packets from othe

Database connectivity is a critical, limited, and expensive resource, which is particularly evident in enterprise-class applications. The management of database connections can significantly affect the scalability and robustness of the entire application, affecting the performance of the program. The database connection pool was raised for this issue. The database connection pool is responsible for allocating, managing, and freeing the database connection, which allows the application to reuse