What is parameter in servlet?
Request parameters are extra information sent with the request. For HTTP servlets, parameters are contained in the query string or posted form data. You should only use this method when you are sure the parameter has only one value. If the parameter might have more than one value, use getParameterValues(java.
Which method of ServletRequest interface are used to access attributes?
For example, HTTP data is provided by the interface HttpServletRequest, which extends ServletRequest. This framework provides the servlet’s only access to this data….Interface javax. servlet. ServletRequest.
| Attribute Name | Attribute Type | Description |
|---|---|---|
| javax.net.ssl.session | javax.net.ssl.SSLSession | An SSL session object, if the request was made using SSL. |
What is a ServletRequest?
A ServletRequest object provides data including parameter name and values, attributes, and an input stream. Interfaces that extend ServletRequest can provide additional protocol-specific data (for example, HTTP data is provided by HttpServletRequest .
What are JSP directives in Java?
JSP directives are the elements of a JSP source code that guide the web container on how to translate the JSP page into it’s respective servlet. Syntax : @ <%@ directive attribute = “value”%> Directives can have a number of attributes which you can list down as key-value pairs and separated by commas.
What is ServletRequest and ServletResponse?
ServletRequest and ServletResponse are two interfaces that serve as the backbone of servlet technology implementation. They belong to the javax. servlet package. Signature: public interface ServletRequest. Blueprint of an object to provide client request information to a servlet.
What are the uses of ServletRequest?
ServletRequest allows the Servlet to access information such as: Names of the parameters are passed by the client. The protocol [scheme] such as the HTIP POST and PUT methods being used by the client. The names of the remote host that are made the request.
What is the return type of getAttribute string name in Servletrequest?
getAttribute. Returns the value of the named attribute as an Object , or null if no attribute of the given name exists. Attributes can be set two ways. The servlet container may set attributes to make available custom information about a request.
How do you get the fully qualified name of the client that sent the request in servlet?
String getRemoteHost() Returns the fully qualified name of the client that sent the request.
What is ServletRequest interface?
public interface ServletRequest This interface is used for getting data from the client to the servlet for a service request. Defines an object to provide client request information to a servlet. The servlet container creates a ServletRequest object and passes it as an argument to the servlet’s service method.