javax.servlet.http
类 HttpUtils

java.lang.Object
  javax.servlet.http.HttpUtils

已过时。 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 Object

构造方法摘要

HttpUtils()
已过时。 Constructs an empty HttpUtils object.

方法摘要

static StringBuffer	getRequestURL(HttpServletRequest req) 已过时。 Reconstructs the URL the client used to make the request, using information in the HttpServletRequest object.
static Hashtable<String,String[]>	parsePostData(int len, ServletInputStream in) 已过时。 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 Hashtable<String,String[]>	parseQueryString(String s) 已过时。 Parses a query string passed from the client to the server and builds a HashTable object with key-value pairs.

从类 java.lang.Object 继承的方法

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造方法详细信息

HttpUtils

public HttpUtils()

已过时。

Constructs an empty HttpUtils object.

方法详细信息

parseQueryString

public static Hashtable<String,String[]> parseQueryString(String s)

已过时。

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.

参数：

s - a string containing the query to be parsed

返回：

a HashTable object built from the parsed key-value pairs

抛出：

IllegalArgumentException - if the query string is invalid

parsePostData

public static Hashtable<String,String[]> parsePostData(int len,
                                                       ServletInputStream in)

已过时。

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.

参数：

len - an integer specifying the length, in characters, of the ServletInputStream object that is also passed to this method

in - the ServletInputStream object that contains the data sent from the client

返回：

a HashTable object built from the parsed key-value pairs

抛出：

IllegalArgumentException - if the data sent by the POST method is invalid

getRequestURL

public static StringBuffer getRequestURL(HttpServletRequest req)

已过时。

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.

参数：

req - a HttpServletRequest object containing the client's request

返回：

a StringBuffer object containing the reconstructed URL