If you directly useJava ServletsYou will have to process HTTP input and HTML output in the Java class.Java programmingExperience to build complex applicationsProgram. The addition of JSP allows you to distinguish the HTML expression logic from the
String Path = request. getcontextpath ();System. Out. println (PATH );%>If you add the precedingCodeWhat is the output result?Result:/Project NameI thought I only got the project name or just got /"//".I also accidentally discovered this during my
This action is used to dynamically define an XML tag. can contain and .
It has only one attribute name.
For example:
An empty element is generated after execution:
Michael
James is the sales manager
After execution:
// variable declaration connection sqlcon = NULL; // database connection object statement sqlstmt; // SQL statement object resultset sqlrst; // result set object string strsql; // SQL statement int intpagesize; // The number of records
To put it bluntly, we will introduce the main functions of the code I wrote: This menu program can be used only by configuring XML, and one or more permissions can be set for each menu item during configuration, easy to use. You can download it as
How to display the server time synchronously on the client:
1. Use Ajax asynchronous commit to get the time, and then partial refresh the page.
2. Obtain the server time and accumulate the time on the local (client.
The first method obviously
I. jsp connection to oracle8/8i/9i Database (in thin Mode)Testoracle. jsp is as follows:String url = "JDBC: oracle: thin :@ localhost: 1521: orcl ";// Orcl is the SID of your databaseString user = "Scott ";String Password = "tiger ";Connection conn =
Automatically updated JSP Download Page
The method is to use one Javabean to search for the folder content every time you access the JSP page. When the folder has been updated, javaBean searches for the updated files and lists the existing files for
I recently registered to participate in a Web page production competition and had the opportunity to visit jiangda again in August 22. I was excited.
I can make up for my almost zero web page production knowledge, so today, cit3d was officially
If "relative path" is used in JSP, problems may occur.Because the "relative path" in the webpage is relative to the "URL request address" to find resources.What does the above sentence mean?For example:Assume that we have a project: MyAppUnder this
Statement: This article is an article from the blog site. When you query the relevant information, you will see the same results... It should have been seen, but I did not identify the true and false, so I copied it... Very speechless... Again, I
The current request can be forwarded to a static resource, JSP page, or servlet at runtime. The requested resource must be in the same context as the jsp request.
This action will terminate the execution of the current Ye Mi ang. If the page
It is used to include static and dynamic resources on the current page. Once the contained page is executed, request processing continues on the call page. the contained page cannot change the response status code or set the header, which prevents
When looking at the following text, first we need to clarify the figure above, so that different classes will be inherited according to different requirements during encoding.
The core of servlet APIS is javax. servlet. servlet interface, all
If you are using a container that complies with JSP 1.2/servlet 2.3, such as Tomcat 4.x or higher, you can use the absolute path in the taglib command of the JSP page instead of the web. specify the taglib element in XML.
You still need to declare
JSP: Include include the output of other pages (Dynamic inclusion) during the North request of the Home Page)
The include command is different from the previous one. JSP code is inserted (static inclusion) before the main page is converted to
Pre: All the following JSP standard syntaxes have corresponding XML compatibility label representation.
Java code in JSP, the correspondence between JSP and Servlet
1.
Eg: Current Time:
XML expression: JAVA expression
In jsp1.2 and later
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