Class HttpUtils

public static java.lang.StringBuffer getRequestURL(HttpServletRequest req)

Reconstructs the URL the client used to make the request, using information in the HttpServletRequest object. The returned URL contains a protocol, server name, port number, and server path, but it does not include query string parameters.

Because this method returns a StringBuffer, not a string, you can modify the URL easily, for example, to append query parameters.

This method is useful for creating redirect messages and for reporting errors.

Parameters:

req - a HttpServletRequest object containing the client's request

Returns:

a StringBuffer object containing the reconstructed URL

public static java.util.Hashtable parsePostData(int len,
                                                ServletInputStream in)

Parses data from an HTML form that the client sends to the server using the HTTP POST method and the application/x-www-form-urlencoded MIME type.

The data sent by the POST method contains key-value pairs. A key can appear more than once in the POST data with different values. However, the key appears only once in the hashtable, with its value being an array of strings containing the multiple values sent by the POST method.

The keys and values in the hashtable are stored in their decoded form, so any + characters are converted to spaces, and characters sent in hexadecimal notation (like %xx) are converted to ASCII characters.

Parameters:

len - an integer specifying the length, in characters, of the ServletInputStream object that is also passed to this method

in - the ServletInputStream object that contains the data sent from the client

Returns:

a HashTable object built from the parsed key-value pairs