uk.ac.ed.inf.utils.webutils
Class WebUtils

java.lang.Object
  uk.ac.ed.inf.utils.webutils.WebUtils

public class WebUtils
extends java.lang.Object

Web utilities. For reading from URL etc.

Version:

12 Dec 2007

Author:

Luna De Ferrari luna.deferrari-at-ed.ac.uk

Field Summary

static boolean

m_debug

Constructor Summary

WebUtils()

Method Summary

static java.io.BufferedReader	getReaderFromInputStream(java.io.InputStream stream) Creates a buffered reader from an input stream
static java.io.InputStream	getStreamFromFileUri(java.lang.String url)
static java.util.zip.GZIPInputStream	getStreamFromGzipUrl(java.lang.String gzipUrl)
static java.io.InputStream	getStreamFromURL(java.lang.String url) Creates an input stream from a URL (gets all the HTML or XML contained in the page)
static java.lang.String	getStringFromBufferedReader(java.io.BufferedReader reader) Get a string from a buffered reader
static java.lang.String	getStringFromUrl(java.lang.String url, boolean gzip) Get a string from a URL
static java.lang.String	md5Hash(java.lang.String s) Create the md5 hash of a text From http://snippets.dzone.com/posts/show/3686

Methods inherited from class java.lang.Object

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

Field Detail

m_debug

public static boolean m_debug

Constructor Detail

WebUtils

public WebUtils()

Method Detail

getReaderFromInputStream

public static java.io.BufferedReader getReaderFromInputStream(java.io.InputStream stream)

Creates a buffered reader from an input stream

Parameters:

url - a URL

Returns:

reader

Throws:

java.io.IOException

getStreamFromFileUri

public static java.io.InputStream getStreamFromFileUri(java.lang.String url)

getStreamFromGzipUrl

public static java.util.zip.GZIPInputStream getStreamFromGzipUrl(java.lang.String gzipUrl)

getStreamFromURL

public static java.io.InputStream getStreamFromURL(java.lang.String url)
                                            throws java.io.IOException

Creates an input stream from a URL (gets all the HTML or XML contained in the page)

Parameters:

url - a URL or file URI

Returns:

an input stream object

Throws:

java.io.IOException

getStringFromBufferedReader

public static java.lang.String getStringFromBufferedReader(java.io.BufferedReader reader)

Get a string from a buffered reader

Parameters:

reader - a reader object

Returns:

Throws:

java.io.IOException

getStringFromUrl

public static java.lang.String getStringFromUrl(java.lang.String url,
                                                boolean gzip)

Get a string from a URL

Parameters:

url -

gzip - whether the document in the url has to be gunzipped

Returns:

md5Hash

public static java.lang.String md5Hash(java.lang.String s)

Create the md5 hash of a text From http://snippets.dzone.com/posts/show/3686

Parameters:

s - the text to hash

Returns:

the md5 code

Throws:

java.security.NoSuchAlgorithmException