Which element indicates web xml is optional?

Which element indicates web xml is optional?

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How do I add a resource reference in web xml?

Add a resource reference:

1. In the Design view, click Add.
2. In the Add Item window, select Resource Reference. Click OK.
3. In the Name field, type the name of your resource reference, for example: SAMPLE.
4. In the Binding Name field, type the name of your resource reference, for example: jdbc/SAMPLE.

What does the Web xml file to identify 2 items it contains?

web. xml defines mappings between URL paths and the servlets that handle requests with those paths. The web server uses this configuration to identify the servlet to handle a given request and call the class method that corresponds to the request method.

What is web xml tags?

xml defines mapping between URL paths and servlets that handle requests with those paths. The web. xml file provides configuration and deployment deployment information for the Web components that comprise a Web application. The web.

What is JSP translation phase?

During the translation phase each type of data in a JSP page is treated differently. Static data is transformed into code that will emit the data into the response stream. JSP elements are treated as follows: Directives are used to control how the web container translates and executes the JSP page.

What is web INF web xml?

/WEB-INF/web. xml – The Web Application Deployment Descriptor for your application. This is an XML file describing the servlets and other components that make up your application, along with any initialization parameters and container-managed security constraints that you want the server to enforce for you.

What is EJB-ref in web xml?

The ejb-ref element in the web. xml deployment descriptor declares that either a servlet or JSP is going to be using a particular EJB. The ejb-reference-description element in the weblogic. xml deployment descriptor binds that reference to an EJB, which is advertised in the global JNDI tree.

What is resource reference?

Reference sources (otherwise known as reference resources, or background sources) are designed to help you find specific types of information quickly. Use reference sources to: find key facts and background information that will help you assess other resources. learn definitions of important words or concepts.

Do I need a Web xml?

No, there will be no need of web. xml for servlet based application if you are using servlet version >3.0 and tomcat 7 as it will not run in the previous versions of tomcat. Annotation represents the metadata. If you use annotation, deployment descriptor (web.

Where does the Web xml file get created?

WEB-INF directory
The web. xml file is located in the WEB-INF directory of your Web application. The first entry, under the root servlet element in web. xml, defines a name for the servlet and specifies the compiled class that executes the servlet.

How do I add a HTML file to Web xml?

html should be directly inside your context root or in other words directly in your *. war. Key thing to note is that – “In jsp-file element, you can specify a JSP or HTML, whose content can be resolved to HTML form.” And that is the same reason that in element you can specify either a HTML or JSP file.

What is JSP tag?

It stands for Java Server Pages. It is a server side technology. It is used for creating web application. It is used to create dynamic web content. In this JSP tags are used to insert JAVA code into HTML pages.

What is the purpose of specifying resources in the web XML?

The idea is that specifying resources in the web.xml has the advantage of separating the developer role from the deployer role. In other words, as a developer, you don’t have to know what your required resources are actually called in production, and as the guy deploying the application, you will have a nice list of names to map to real resources.

How do I define an external resource name in WebLogic?

Use a separate element to define each external resource name. The external resource name is mapped to the actual location name of the resource at deployment time in the WebLogic-specific deployment descriptor weblogic.xml.

How does work in containers?

introduces another layer of indirection: you specify the name you want to use in the web.xml, and, depending on the container, provide a binding in a container-specific configuration file. So here’s what happens: let’s say you want to lookup the java:comp/env/jdbc/primaryDB name.

What is the optional context-Param element used for?

The optional context-param element contains the declaration of a Web application’s servlet context initialization parameters. The following table describes the reserved context parameters used by the Web application container, which have been deprecated and have replacements in weblogic.xml..