Use Web-Harvest to data-extract from www.vdisk.cn

Question

www.vdisk.cn is a web site, you can keep your file inside without free. My space ishttp://www.vdisk.cn/garyyding. But the limitation is that un-registered user can not keep your files more than 1 month.

User's url has a standard format: http://www.vdisk.cn/[username] I want to statistic which user has which kind of file. For example mock a username, then search.

Solution

Analysis the web page, and find the used urls

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Tools

Need a tool to analysis web page. So find www.open-open.com, got Web-Harvest

http://web-harvest.sourceforge.net/index.php

It uses xpath to analys web page. It not provides API. It provides a xml ( the element is command).

Coding

<?xml version="1.0" encoding="UTF-8"?><!-- Expects following initial variable: search - search expression --><config charset="UTF-8"><include path="functions.xml" /><!-- defines search keyword and start URL --><var-def name="search" overwrite="false">platon</var-def>    <var-def name="currentUser" overwrite="false">msdiaoxian</var-def>    <var-def name="targetWebsite" overwrite="false">http://www.vdisk.cn/msdiaoxian</var-def>    <var-def name="url"><xpath expression="//a[@href[contains(., '?tag=ALLFILES')]]/@href[1]"><html-to-xml><http url="${targetWebsite}" /></html-to-xml></xpath></var-def>        <file action="write" path="output.xml" charset="UTF-8">        <template>            <![CDATA[ <catalog name="${currentUser}"> ]]>        </template><loop item="link" index="i" filter="unique">         <list><var name="url" /></list><body>    <var-def name="links">        <xpath expression="//a[@href[contains(., '/down/index/')]]">            <html-to-xml>                <http url="${targetWebsite}/${link}" />            </html-to-xml>        </xpath>    </var-def> <var name="links" /></body></loop><![CDATA[ </catalog> ]]></file>  </config>

import org.webharvest.definition.ScraperConfiguration;import org.webharvest.runtime.Scraper;import org.webharvest.runtime.variables.Variable;public class WebHarvestTest {    public static void main(String[] args) throws Exception {        // register external plugins if there are any        // DefinitionResolver.registerPlugin("com.my.MyPlugin1");        // DefinitionResolver.registerPlugin("com.my.MyPlugin2");        // DefinitionResolver.registerPlugin("com.my.MyPlugin3");        String path = WebHarvestTest.class.getResource("/").getFile();        System.setProperty("http.proxyHost", "192.168.0.59");        System.setProperty("http.proxyPort", "8080");                //System.setProperty("java.net.useSystemProxies", "true");                ScraperConfiguration config = new ScraperConfiguration(path                + "/test1.xml");        Scraper scraper = new Scraper(config, path);        scraper.addVariableToContext("username", "web-harvest");        scraper.addVariableToContext("password", "web-harvest");        // scraper.addVariableToContext("myXmlLib", new MyXmlLibrary());        scraper.setDebug(true);        scraper.getHttpClientManager().setHttpProxy("192.168.0.59", 8080);        scraper.execute();                         // takes variable created during execution        Variable articles = (Variable) scraper.getContext().get("url");                //System.out.println("articles=" + articles);        // do something with articles...    }}

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