What is the use of request getParameter?
What is the use of request getParameter?
getParameter. Returns the value of a request parameter as a String , or null if the parameter does not exist. Request parameters are extra information sent with the request. For HTTP servlets, parameters are contained in the query string or posted form data.
Which of the following are the method in belong to HttpServletRequest interface?
HTTP Request Headers: The idea of a request header is specific to HTTP protocol and hence request header related methods are part of HttpServletRequest: Enumeration getHeaders (String name) String getHeader (String name) Enumeration getHeaderNames ()
What is getQueryString?
The getQueryString() method is defined in the HttpServletRequest interface, which is used to retrieve the query string of the HTTP request. A query string is the string on the URL to the right of the path to the servlet. Using this a programmer can know the data which is sent from the client(when a form is submitted)
Which method is used to retrieve the values from HttpServletRequest?
The HttpServletRequest interface provides the getCookies method to obtain an array of cookies that are present in the request. This method returns null if no cookies were sent. The cookies are data sent from the client to the server on every request that the client makes.
How do you write URL parameters?
To identify a URL parameter, refer to the portion of the URL that comes after a question mark (?). URL parameters are made of a key and a value, separated by an equal sign (=). Multiple parameters are each then separated by an ampersand (&).
How do I get flexcontext for a httpservletrequest request?
If FlexContext is not available: Solution 1: inside method (>= Spring 2.0 required) HttpServletRequest request = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()) .getRequest(); Solution 2: inside bean (supported by >= 2.5, Spring 3.0 for singelton beans required!)
What is the difference between getlocaladdr() and getlocale()?
Retrieves the body of the request as binary data using a ServletInputStream. java.lang.String getLocalAddr() Returns the Internet Protocol (IP) address of the interface on which the request was received. java.util.Locale getLocale() Returns the preferred Localethat the client will accept content in, based on the Accept-Language header.
What is servletrequest object in servlet?
public interface ServletRequest Defines an object to provide client request information to a servlet. The servlet container creates a ServletRequestobject and passes it as an argument to the servlet’s servicemethod. A ServletRequestobject provides data including parameter name and values, attributes, and an input stream.
How do I get the Certificate of a servlet request?
The servlet container may set attributes to make available custom information about a request. For example, for requests made using HTTPS, the attribute javax.servlet.request.X509Certificatecan be used to retrieve information on the certificate of the client. Attributes can also be set programatically using ServletRequest#setAttribute.
