@Deprecated
public class HttpUtils
extends java.lang.Object
Constructor and Description |
---|
HttpUtils()
Deprecated.
Constructs an empty
HttpUtils object. |
Modifier and Type | Method and Description |
---|---|
static java.lang.StringBuffer |
getRequestURL(HttpServletRequest req)
Deprecated.
Reconstructs the URL the client used to make the request, using information in the
HttpServletRequest object. |
static java.util.Hashtable<java.lang.String,java.lang.String[]> |
parsePostData(int len,
ServletInputStream in)
Deprecated.
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.
|
static java.util.Hashtable<java.lang.String,java.lang.String[]> |
parseQueryString(java.lang.String s)
Deprecated.
Parses a query string passed from the client to the server and builds a
HashTable object with
key-value pairs. |
public static java.util.Hashtable<java.lang.String,java.lang.String[]> parseQueryString(java.lang.String s)
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.
s
- a string containing the query to be parsedHashTable
object built from the parsed key-value pairsjava.lang.IllegalArgumentException
- if the query string is invalidpublic static java.util.Hashtable<java.lang.String,java.lang.String[]> parsePostData(int len, ServletInputStream in)
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.
len
- an integer specifying the length, in characters, of the ServletInputStream
object that is
also passed to this methodin
- the ServletInputStream
object that contains the data sent from the clientHashTable
object built from the parsed key-value pairsjava.lang.IllegalArgumentException
- if the data sent by the POST method is invalidpublic static java.lang.StringBuffer getRequestURL(HttpServletRequest req)
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.
req
- a HttpServletRequest
object containing the client's requestStringBuffer
object containing the reconstructed URL