com.zeevbelkin.commons
Class UrlUtils

java.lang.Object
  com.zeevbelkin.commons.UrlUtils

public class UrlUtils
extends java.lang.Object

Author:

Zeev (Vladimir) Belkin

Constructor Summary

UrlUtils()

Method Summary

static java.lang.String	addParamtsToUrl(java.lang.String u, java.lang.String params) This method appends a given URL with name/value parameter pairs.
static java.lang.String	getParamFromQuery(java.lang.String params, java.lang.String name) retrieves a value of parameter with a given name from an ampersand separated string
static java.lang.String	getParamFromUrl(java.lang.String u, java.lang.String name) retrieves a parameter with a given name from an URL
static java.lang.String	getRootUrl(java.lang.String u) returns, for any HTTP(s) URL, the URL that points to the site ROOT
static java.lang.String	setParamInUrl(java.lang.String u, java.lang.String name, java.lang.String value) This method sets a parameter with a given name in an URL.

Methods inherited from class java.lang.Object

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

Constructor Detail

UrlUtils

public UrlUtils()

Method Detail

getRootUrl

public static java.lang.String getRootUrl(java.lang.String u)

returns, for any HTTP(s) URL, the URL that points to the site ROOT

Parameters:

u - any HTTP(s) URL

Returns:

the site root URL

addParamtsToUrl

public static java.lang.String addParamtsToUrl(java.lang.String u,
                                               java.lang.String params)

This method appends a given URL with name/value parameter pairs.

Parameters:

u - the initial URL

params - a string that contains the parameter value pairs in format name1=value1&name2=value ...

Returns:

an URL with the given additional parameters

setParamInUrl

public static java.lang.String setParamInUrl(java.lang.String u,
                                             java.lang.String name,
                                             java.lang.String value)

This method sets a parameter with a given name in an URL. If the initial URL already contains the parameter with the given name this parameter value will be updated. If there are several parameters with the given name, only one updated pair will be left.

Parameters:

name - the name of parameter to append or override

value - the value of parameter to set

u - an initial URL

Returns:

an updated URL

getParamFromUrl

public static java.lang.String getParamFromUrl(java.lang.String u,
                                               java.lang.String name)

retrieves a parameter with a given name from an URL

Parameters:

u - given URL

name - the parameter name

getParamFromQuery

public static java.lang.String getParamFromQuery(java.lang.String params,
                                                 java.lang.String name)

retrieves a value of parameter with a given name from an ampersand separated string

Parameters:

params - ampersand separated string

name - a parameter name to get the value

Returns:

the parameter value if any or null otherwise