JSP

Dynamically set read-only/read-write for a component on the page Document. getelementbyid ("custname"). readonly = false; Document. getelementbyid ("custname"). readonly = true; Dynamically hide/display a widget on the pageTDID. style. Display =

1. Access the value returned by JS in JSP: Problem: CopyCode The Code is as follows: How can I obtain the STR value in Javascript from AA in this JSP ????The details are as follows:Copy codeThe Code is as follows: Solution:It must be submitted

Is your J2EE application running slowly? Can they withstand rising traffic volumes? This article describes how to develop high-performance and highly elastic JSP pages and Servlet performance optimization technologies. It means to build as fast as

1. Javascript. Set a variable and submit it only once. 2 or Javascript. Set the submit button or image to disable. Onsubmit = "getelbyid ('submitinput'). Disabled = true; return true;"> 3. Use the struts synchronization token

Package coreservlets; Import java. Io .*;Import javax. servlet .*;Import javax. servlet. http .*; /** Sets six cookies: Three that apply only to the current* Session (regardless of how long that session lasts)* And three that persist for an

Cookie should be a technology that has been used for a long time. As early as the advent of HTML, there was no way to record and identify different users between each independent page. Later, people invented the cookie technology. When a user

String filename = "";If (request. getparameter ("file ")! = NULL ){Filename = request. getparameter ("file ");}Response. setcontenttype ("application/MSWord ");Response. setheader ("content-disposition", "attachment; filename =" + filename );

After I modified connectorservlet. Java and simpleuploaderservlet. Java two files, regenerate the fckeditor-java-2.3.jar package, to solve all the garbled problem, there are three to modify 1. modify the character encoding of the Web Container. If

It can be different from PHP, JavaScript, ASP, ASP. NET, ColdFusion, Java, and ABAP.Programming Language. "Fck" in the "FCKeditor" name is the abbreviation of the author's name Frederico Caldeira knabben. Download the FCKeditor Control from the

String agent = request. getheader ("User-Agent "); Stringtokenizer ST = new stringtokenizer (agent ,";"); St. nexttoken (); // Obtain the user's browser name String userbrowser = ST. nexttoken (); // Obtain the user's OS name String useros = ST.

1. Configure the context. xml file CopyCode The Code is as follows: Name = "JDBC/books" // The reference name can be customized. Auth = "Container" // specify the manager for datasource Management Type = "javax. SQL. datasource" // specify the

Please refer to the main principle of http://blog.hunan2s.com/article.asp? Id = 233 After debugging, it is successful .. Ah Add the source code .. JDK 1.5 + ECLIPSE + TOMCAT 5.0.28 + MYSQL 5.0 Database TEST, table name newsField: id int

Four random numbers and messy background images are generated. The numbers and background colors change, and the server refreshes (with history. go (-1)Prototype reference ALIBABA http://china.alibaba.com/member/showimage File that generates the

With the development of WEB technology, WEB content ranges from static pages to dynamic pages with rich content. Dynamic page generation is a challenge for WEB developers. There are many ways to solve this problem, such as plug-in technology and

String month; %> Year = request. getParameter ("year "); %> day Days = new String [42]; For (int I = 0; I { Days [I] = ""; } %> Calendar thisMonth = Calendar. getInstance (); If (month! = Null &&(! Month. equals ("null "))) ThisMonth. set

Use JSP to read client information Read the following code. If you have different requirements, you can easily modify these codes. These codes give you the following:Company, user name, version, main version, minor versionOperating System

Author: Xu Chunjin Below are some of my experiences in learning JSP: I. Working Principles of JSP When a JSP file is requested for the first time, the JSP Engine converts the JSP file into a servlet. The engine itself is also a servlet. In JSWDK

JSP login program code Public static boolean checkUserPermission (HttpSession mySession, HttpServletRequest request, HttpServletResponse response){If (mySession. getValue ("hasPermission") = null |! (Boolean) mySession. getValue

Custom tags) (Prepared study notes) Step 1. Create a Tag handler class (Tag Processor class) Package javax. servlet. jsp. tagext Develop a label processor class for an empty Body -----> 1) implements Tag 2) extends TagSupport The method of

Save, update, and delete data: 1. Session. save () method: The Session. save () method is used to persistently store object objects. That is to say, when session. save () is executed, an insert SQL statement is generated to save data. The following