Can Web xml have multiple servlet mapping?

Can Web xml have multiple servlet mapping?

You can declare multiple servlets using the same class with different initialization parameters. The name for each servlet must be unique across the deployment descriptor. The element specifies a URL pattern and the name of a declared servlet to use for requests whose URL matches the pattern.

How we can handle errors in servlets?

When a servlet throws an exception, the web container searches the configurations in web. xml that use the exception-type element for a match with the thrown exception type. You would have to use the error-page element in web.

What is servlet mapping in web xml?

Servlet mapping specifies the web container of which java servlet should be invoked for a url given by client. It maps url patterns to servlets. When there is a request from a client, servlet container decides to which application it should forward to. It is located in WEB-INF directory of the web application.

Does spring boot use servlets?

4.2. In a Spring Boot application, the servlet is registered either as a Spring @Bean or by scanning the @WebServlet annotated classes with an embedded container. With the Spring @Bean approach, we can use the ServletRegistrationBean class to register the servlet.

Which of the following is true about servlets?

Which of the following is true about servlets? Explanation: Servlets execute within the address space of a web server. Since it is written in java it is platform independent. Servlet filter provides the dynamic interception of requests and responses to transform the information.

Is java servlets client or server side?

Java servlets are a key component of server-side Java development. A servlet is a small, pluggable extension to a server that enhances the server’s functionality.

Where is javax servlet package?

It contains, among others, the files /usr/share/java/servlet-api-2.5. jar and /usr/share/java/jsp-api-2.1. jar , which are the servlet and JSP libraries you need.

What is a servlet exception?

Class ServletException Defines a general exception a servlet can throw when it encounters difficulty.

How do I add an error page in Web XML?

This error page is defined in web. xml by using tag . allows you to define custom error messages based upon HTTP error code or any Java Exception. you can define a default error message for all exceptions by specifying as java.

What happens when a servlet throws an exception?

When a servlet throws an exception, the web container searches the configurations in web.xml that use the exception-type element for a match with the thrown exception type. You would have to use the error-page element in web.xml to specify the invocation of servlets in response to certain exceptions or HTTP status codes.

What is the use of /ErrorHandler servlet in Java?

If the web application throws either ServletException or IOException, then the web container invokes the /ErrorHandler servlet. You can define different Error Handlers to handle different type of errors or exceptions. Above example is very much generic and hope it serve the purpose to explain you the basic concept.

How do I map a Java servlet to a web page?

For a Java servlet to be accessible from a browser, you must tell the servlet container what servlets to deploy, and what URL’s to map the servlets to. This is done in the web.xml file of your Java web application. Configuring and Mapping a Servlet. To configure a servlet in the web.xml file, you write this:

What is the use of error message attribute in servlet?

This attribute gives information exact error message which can be stored and analyzed after storing in a java.lang.String data type. This attribute gives information about URL calling the servlet and it can be stored and analysed after storing in a java.lang.String data type.