What is doPost?
Dopost is generally used to update or post some information to the server. DoGet is faster if we set the response content length since the same connection is used. Thus increasing the performance. DoPost is slower compared to doGet since doPost does not write the content length. DoGet should be idempotent.
What is different between doGet and doPost?
doGet() shall be used when small amount of data and insensitive data like a query has to be sent as a request. doPost() shall be used when comparatively large amount of sensitive data has to be sent. Examples are sending data after filling up a form or sending login id and password.
What is doGet and doPost in servlet?
The doGet() method is used for getting the information from server while the doPost() method is used for sending information to the server.
What does doPost method do in servlet?
doPost. Called by the server (via the service method) to allow a servlet to handle a POST request. The HTTP POST method allows the client to send data of unlimited length to the Web server a single time and is useful when posting information such as credit card numbers.
What is ServletConfig and ServletContext?
ServletConfig is used for sharing init parameters specific to a servlet while ServletContext is for sharing init parameters within any Servlet within a web application.
What is the difference between GenericServlet and HttpServlet?
The main difference between GenericServlet and HttpServlet is that the GenericServlet is protocol independent and can be used with any protocol such as HTTP, SMTP, FTP, and, CGI while HttpServlet is protocol dependent and only used with HTTP protocol.
Do vs get doPost?
doget() is request information. dopost() is provide information. In doget() parameters are appended to URL and sent with header information. In dopost(), on the other hand, will send the information through socket back to the webservers and it won’t show in the URL bar.
When the doGet method of a servlet is called it receives?
and calls doGet, doPost, doPut, doDelete, etc. methods as appropriate. Q 9 – When doGet() method of servlet gets called? A – A GET request results from a normal request for a URL.
What is ServletContext?
Interface ServletContext. 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 is ServletContext object?
ServletContext is the object created by Servlet Container to share initial parameters or configuration information to the whole application.
What is GenericServlet?
GenericServlet class implements Servlet, ServletConfig and Serializable interfaces. It provides the implementation of all the methods of these interfaces except the service method. GenericServlet class can handle any type of request so it is protocol-independent.
What is servlet life cycle?
A servlet life cycle can be defined as the entire process from its creation till the destruction. The following are the paths followed by a servlet. The servlet is initialized by calling the init() method. The servlet calls service() method to process a client’s request.
What is the use of doPost () method?
The doPost ( ) method is overridden to process any HTTP POST requests that are sent to this servlet. It uses the getParameter ( ) method of HttpServletRequest to obtain the selection that was made by the user.
What is doPost () method in HTTPServlet?
In this post, we will demonstrate the usage of the HttpServlet class provided doPost () method with an example. The doPost () method is called by the server (via the service method) to allow a servlet to handle a POST request.
How do I get the get and post parameters of a parameter?
The getParameter () method can return (if possible) both GET and POST parameters as it works transparently between GET and POST. You don’t need to do any explicit work to get the GET parameters. you can use getParameter for both query parameters and POST parameters.