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, IOException { this.doget (request, response); }}6.5, set content-disposition response header, let the browser download files Package Gacl.http.study;import Java.io.ioexception;import Java.io.inputstream;import java.io.outputstream;import Javax.servlet.servletexception;import Javax.servlet.http.httpservlet;import Javax.servlet.http.httpservletrequest;import Javax.servlet.http.httpservletresponse;public class ServletDemo05 Extends HttpServlet {public void doget (HttpServletRequest req
-end port of the FTP server through the firewall. Many clients in the intranet cannot log on to the FTP server in port mode because TCP 20 from the server cannot establish a new connection to the internal network's clients, causing it to fail to work.35.3.6 goals and disadvantages of FTP implementationThe objectives of the FTP implementation are as follows: Promote the sharing of files (computer programs or data). Encourage the use of remote computers indirectly. The details of
. Other HTTP Request MethodsSome other HTTP request methods are listed in the following table: Method Describe HEAD Same as GET, but returns only the HTTP header and does not return the document body. PUT Uploads the specified URI representation. DELETE Deletes the specified resource. OPTIONS Returns the HTTP methods supported by the server. CONNECT Convert
links, with millions of users. OSPF allows neighboring routers to establish adjacent relationships and transmit LSA information through DR and BDR. The region in OSPF is used to restrict the LSA and summarize the route information. Each router is connected to the region zero (main region.Network basics lecture 13: routing information protocol (RIP) Network basics
The basic content must be well mastered, so this time we will explain the basics of the DHCP protocol. It helps you to make a simple summary for future review. DHCP protocol basics: Concepts Dynamic Host Configuration Protocol (DHCP) is a LAN network
: The passive shut-off side sends a fin, used to close the passive shut-off side to the active shutdown of the data transfer, that is, to tell the active shut-off party, my data is sent out, will not send you data.Wave for the fourth time: the active closing party receives fin, sends an ACK to the passive closing party, confirms the serial number to receive the serial number +1, to this point, completes four times the wave.Iv. URI, URL, URNURI: Contains URL and URN, Uniform Resource Identifier U
secrets. Medium-sized enterprises usually adopt BGP to make their entire network a real multi-host network.Network basics lecture 16: Internet routing and peer-to-peer networking Network basics lecture 15: Advanced OSPF Routing Protocol Network basics Lecture 14: OSPF routing prot
in connecting two computers: When one computer needs to connect to another remote computer, the TCP protocol lets them establish a connection: the virtual link used to send and receive data.The TCP protocol is responsible for collecting these packets and placing them in the appropriate order, and then restoring them correctly after receiving the received side. The TCP
following points: You can take advantage of Xcode's check mechanism. For a method defined as @required, the compiler will have a warning if the protocol is implemented without implementing this method. This prevents you from inadvertently forgetting to implement a particular code, and because of the runtime characteristics of OC, such errors tend to cause the program to crash at run time. Facilitates the encapsulation of the code. If a c
responsible for one level of the problem, as long as the maintenance of this level is OK. Status Code 1** Class Status code: Information status code, indicating that the information is being processed. 2** class Status code: Success status Code, indicating that the request is completed normally. 3** class status code: Redirection status code, indicating that the client needs additional operations (such as jumps, redirects). 4** Class Status code: Error status code, which i
Recently the Mushroom Street team of the TT open source, so I have an interest in IM, and then found on the Internet xmppframework to study,and wrote the following series of tutorials for your reference, there is a wrong place to write, please forgive me a lot.Catalog IndexiOS Development--xmppframewok framework based on XMPP Protocol (i): The basicsiOS Development--xmppframewok framework based on XMPP Protocol
TCP/IP network protocol BASICS (1) Introduction This article is a basic knowledge of TCP/IP protocol. It focuses on the content and functions of TCP/IP protocol clusters and the basic knowledge related to TCP, UDP, and IP network protocols. Content TCP/IP protocol clusters
Reproduced----------------------------------------------------------------------------HTTPS Basics: HTTPS (Secure hypertext Transfer Protocol) Secure Hypertext Transfer Protocol is a secure communication channel that is based on HTTP development for exchanging information between client computers and servers. It uses Secure Sockets Layer (SSL) for information ex
aggregated content.When using request forwarding, one request involves multiple servlet resources, which are cross-domain operations and require special attention to encoding consistency within each resource, so the following two lines of code are required in the generic servlet to ensure consistent resource encoding:Request.setcharacterencoding ("UTF-8"); Response.setcontenttype ("Text/html;charset=utf-8");Finally, summarize the characteristics of request forwarding: The request path
XMLHttpRequest object, you need to check the type of browser. A real business-like protocol can reduce this code-writing effort. Basically, loading and saving the specification provides a common API for Web developers to access and modify the DOM in a platform-and language-independent way. In other words, whether your platform is Windows or Linux, it doesn't matter whether you're developing it in VBScript or using JavaScript. You can also save a DOM
Java web basics 2-http protocol, javawebJava web basics 2-http protocol Because java web is based on B/S, http is the most basic and important knowledge of java web. HTTP is used to define the format of communication between the client and the web server. Obtaining a web resource from a web server or receiving client
Resource Locator is a specific URI that the URL can use to identify a resource and also how to locate (locate) the Resource.URLs are strings used on the Internet to describe information resources, mainly used in various WWW client programs and server programs, especially the famous Mosaic.URLs can be used in a unified format to describe various information resources, including files, server addresses and Directories. The URL is generally composed of three parts:①
local file system path, which is often referred to as DocrootFor example, the default root directory is/var/www/html and the directory has php/1.php, and if you want to access it, the path you need to access is www.yyxx.com/php/ 1.php(5) Building response messagesPackage The response message and indicate the MIME Type(6) Send Response messageTCP protocol- based acceptance sends a different dual channel, sending a response message by sending the reci
TCP/IP protocol cluster BASICS (1) network interface layer: the basic layer of the model, responsible for sending and receiving data frames (frame is an independent network information transmission unit ). The Network Interface Layer places frame data on the network or retrieves frames from the network. (2) network layer: encapsulate data into IP data packets, and run necessary routing algorithms to effecti
certain number of English words is very important, remember.OSPF protocol is a very many dynamic routing protocol used in production environment now, so mastering the principle and configuration is very important for the students who will be engaged in the network industry.The mastery of OSPF requires understanding the entire process of OSPF, first of all the basic concepts in OSPF.OSPF is one of the inter
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