| java.lang.Object
 javax.servlet.http.HttpUtils
| HttpUtils | | public class HttpUtils (Code) | | |
| Constructor Summary | |
| public | HttpUtils()
Constructs an empty HttpUtils object. |
| Method Summary | |
| public static StringBuffer | getRequestURL(HttpServletRequest req)
Reconstructs the URL the client used to make the request,
using information in the HttpServletRequest object. | | public static 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. | | public static Hashtable | parseQueryString(String s)
Parses a query string passed from the client to the
server and builds a HashTable object
with key-value pairs. |
| HttpUtils | | public HttpUtils()(Code) | | Constructs an empty HttpUtils object.
|
| getRequestURL | | public static StringBuffer getRequestURL(HttpServletRequest req)(Code) | | 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 objectcontaining the client's request a StringBuffer object containingthe reconstructed URL |
| parsePostData | | public static Hashtable parsePostData(int len, ServletInputStream in)(Code) | | 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 ServletInputStreamobject that is also passed to thismethod
Parameters:
in - the ServletInputStreamobject that contains the data sentfrom the client a HashTable object builtfrom the parsed key-value pairs
exception:
IllegalArgumentException - if the datasent by the POST method is invalid |
| parseQueryString | | public static Hashtable parseQueryString(String s)(Code) | | Parses a query string passed from the client to the
server and builds a HashTable object
with key-value pairs.
The query string should be in the form of a string
packaged by the GET or POST method, that is, it
should have key-value pairs in the form key=value,
with each pair separated from the next by a & character.
A key can appear more than once in the query string
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 query string.
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:
s - a string containing the query to be parsed a HashTable object builtfrom the parsed key-value pairs
exception:
IllegalArgumentException - if the query string is invalid |
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