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javax.servlet.http Class HttpUtils
java.lang.Object | +--javax.servlet.http.HttpUtils
Deprecated. As of Java(tm) Servlet API 2.3. These methods were only useful with the default encoding and have been moved to the request interfaces.
- public class HttpUtils
- extends java.lang.Object
Constructor Summary | |
HttpUtils()
Deprecated. Constructs an empty HttpUtils object. |
Method Summary | |
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 |
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 |
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. |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
Constructor Detail |
HttpUtils
public HttpUtils()
- Deprecated.
- Constructs an empty
HttpUtils
object.
Method Detail |
parseQueryString
public static java.util.Hashtable 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. 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- Returns:
- a
HashTable
object built from the parsed key-value pairs - Throws:
- java.lang.IllegalArgumentException - if the query string is invalid
parsePostData
public static java.util.Hashtable 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.
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 theServletInputStream
object that is also passed to this methodin
- theServletInputStream
object that contains the data sent from the client- Returns:
- a
HashTable
object built from the parsed key-value pairs - Throws:
- java.lang.IllegalArgumentException - if the data sent by the POST method is invalid
getRequestURL
public static java.lang.StringBuffer getRequestURL(HttpServletRequest req)
- Deprecated.
- 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
- aHttpServletRequest
object containing the client's request- Returns:
- a
StringBuffer
object containing the reconstructed URL
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