Class HttpUtils
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionstatic StringBuffer
Deprecated.Reconstructs the URL the client used to make the request, using information in theHttpServletRequest
object.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.Deprecated.Parses a query string passed from the client to the server and builds aHashTable
object with key-value pairs.
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Constructor Details
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HttpUtils
public HttpUtils()Deprecated.Constructs an emptyHttpUtils
object.
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Method Details
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parseQueryString
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 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:
IllegalArgumentException
- if the query string is invalid
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parsePostData
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:
IllegalArgumentException
- if the data sent by the POST method is invalid
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getRequestURL
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 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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