What is the argument of getRealPath() in java?
Introduction. The ServletContext#getRealPath() is intented to convert a web content path (the path in the expanded WAR folder structure on the server’s disk file system) to an absolute disk file system path. The “/” represents the web content root.
What is the argument of getRealPath ()?
“This method returns null if the servlet container cannot translate the virtual path to a real path for any reason (such as when the content is being made available from a . war archive).” argument to getRealPath() through a . war, getRealPath() will return null.
How do I find the actual path of a servlet on a server?
The ServletContext is in servlets available by the inherited getServletContext() method: String relativeWebPath = “/images”; String absoluteDiskPath = getServletContext(). getRealPath(relativeWebPath); File file = new File(absoluteDiskPath, “imagetosave. jpg”); // …
Which of the following is the full path of the servlet?
The getRequestDispatcher method of ServletContext class takes the full path of the servlet, whereas the getRequestDispatcher method of HttpServletRequest class takes the path of the servlet relative to the ServletContext.
What is the use of ServletContext in Java?
Interface ServletContext. Defines a set of methods that a servlet uses to communicate with its servlet container, for example, to get the MIME type of a file, dispatch requests, or write to a log file. There is one context per “web application” per Java Virtual Machine.
What is request dispatcher in Java?
Request Dispatcher is an interface whose implementation defines an object which can dispatch the request to any resources on the server. In this tutorial, we will see how the javax. servlet. RequestDispatcher interface is used to forward or include the response of a resource in a Servlet.
In which condition you will use ServletContext?
The ServletContext object can be used to get configuration information from the web. xml file. The ServletContext object can be used to set, get or remove attribute from the web. xml file.
What is use of ServletContext?
What is Getservletcontext in Java?
public interface ServletContext. Defines a set of methods that a servlet uses to communicate with its servlet container, for example, to get the MIME type of a file, dispatch requests, or write to a log file. There is one context per “web application” per Java Virtual Machine.
What are the two main types of servlet?
There are two main servlet types, generic and HTTP:
- Generic servlets. Extend javax. servlet. GenericServlet. Are protocol independent.
- HTTP servlets. Extend javax. servlet. HttpServlet. Have built-in HTTP protocol support and are more useful in a Sun Java System Web Server environment.
What is the use of ServletConfig and ServletContext?
The ServletConfig parameters are specified for a particular servlet and are unknown to other servlets. It is used for intializing purposes. The ServletContext parameters are specified for an entire application outside of any particular servlet and are available to all the servlets within that application.