Package javax.servlet.http

Class HttpUtils

  • public class HttpUtils
extends java.lang.Object
    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.

    • Constructor Summary

      Constructors 
      Constructor Description
      HttpUtils()
      Deprecated.
      Constructs an empty HttpUtils object.

    • Method Summary

      All Methods Static Methods Concrete Methods Deprecated Methods 
      Modifier and Type Method 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.

      • Methods inherited from class java.lang.Object

        equals, 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<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. 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<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.

        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 the ServletInputStream object that is also passed to this method
        in - the ServletInputStream 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 - a HttpServletRequest object containing the client's request
        Returns:
        a StringBuffer object containing the reconstructed URL