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Class HttpUtils

java.lang.Object  |  +--javax.servlet.http.HttpUtils

public classHttpUtils

extends java.lang.Object

HttpUtils

publicHttpUtils()

Deprecated. 

Constructs an emptyHttpUtils object.

parseQueryString

public static java.util.HashtableparseQueryString(java.lang.String s)

Deprecated. 

Parses a query string passed from the client to the server and builds aHashTable 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 formkey=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:

aHashTable object built from the parsed key-value pairs

Throws:

java.lang.IllegalArgumentException - if the query string is invalid

parsePostData

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

Deprecated. 

Parses data from an HTML form that the client sends to the server using the HTTP POST method and theapplication/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 theServletInputStreamobject that is also passed to thismethod

in - theServletInputStreamobject that contains the data sentfrom the client

Returns:

aHashTable object builtfrom the parsed key-value pairs

Throws:

java.lang.IllegalArgumentException - if the datasent by the POST method is invalid

getRequestURL

public static java.lang.StringBuffergetRequestURL(HttpServletRequest req)

Deprecated. 

Reconstructs the URL the client used to make the request, using information in theHttpServletRequest 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 aStringBuffer, 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 objectcontaining the client's request

Returns:

aStringBuffer object containingthe reconstructed URL