Synopsis
Class Name: javax.servlet.http.HttpUtils
Superclass: java.lang.Object
Immediate Subclasses: None
Interfaces Implemented: None
Availability: Servlet API 1.0 and later
Description
A container object for a handful of potentially useful HTTP-oriented methods.
Class Summary
public class HttpUtils { // Constructors public HttpUtils(); // Class methods public static StringBuffer getRequestURL(HttpServletRequest req); public static Hashtable parsePostData(int len, ServletInputStream in); public static Hashtable parseQueryString(String s); } Constructors
HttpUtils()
public HttpUtils()
- Description
-
The default constructor does nothing.
Class Methods
getRequestURL()
public static StringBuffer getRequestURL(HttpServletRequest req)
- Description
-
Reconstitutes the request URL based on information available in the HttpServletRequest object. Returns a StringBuffer that includes the scheme, server name, server port, and extra path information, but not the query string. The reconstituted URL should look almost identical to the URL used by the client. This method can be used for error reporting, redirecting, and URL creation. For applications that need to uniquely identify particular servlets, the getRequestURI( ) method of HttpServletRequest is generally a better choice.
parsePostData()
public static Hashtable parsePostData(int len, ServletInputStream in)
- Description
-
Parses len characters of parameter data from a ServletInputStream (usually sent as part of a POST operation). Throws an IllegalArgumentException if the parameter data is invalid. Most servlets use getParameterNames( ), getParameter( ), and getParameterValues( ) instead of this method.
parseQueryString()
public static Hashtable parseQueryString(String s)
- Description
-
Returns a Hashtable where the hashtable keys are the parameter names taken from the query string and each hashtable value is a String array that contains the parameter's decoded value(s). Throws an IllegalArgumentException if the query string is invalid. Most servlets use getParameterNames( ), getParameter( ), and getParameterValues( ) instead. It is not safe to use both.
