ServletRequest

ServletRequest Interface

An object of ServletRequest is used to provide the client request information to a servlet.
Example: content type, content length, parameter names and values, header information, attributes, etc.

public String getParameter(String name): is used to obtain the value of a parameter by name.
public String[] getParameterValues(String name): returns an array of String containing all values of the given parameter name. It is mainly used to obtain values of a Multi-select list box.
java.util.Enumeration getParameterNames():Returns an enumeration of all of the request parameter names.
public int getContentLength(): Returns the size of the request entity data, or -1 if not known.
public String getCharacterEncoding(): Returns the character set encoding for the input of this request.
public String getContentType(): Returns the Internet Media Type of the request entity data, or null if not known.
public ServletInputStream getInputStream() throws IOException:Returns an input stream for reading binary data in the request body.
public abstract String getServerName(): Returns the hostname of the server that received the request.
public int getServerPort(): Returns the port number on which this request was received.