Jsoup Modify Links - spring

Question

I am, very new to spring and jsoup... I am using jsoup to parse an html file and copy some text inside a div tag and displaying it on my page. Now i am trying to modify the links and add exit.do to log the users out of the server. I have tried many different approach and my links dont work :( has anyone dealt with this link update before? any help is appriciated.
here is my code.
Thanks a lot.
Lola
modelMap = referenceData( request, modelMap);
modelMap.put("externalUrl", externalUrlMap.get( request.getServletPath() ));
modelMap.put("elementId", elementIdMap.get( request.getServletPath() ));
/** Pass the url map to a string */
String url = (String) externalUrlMap.get( request.getServletPath() );
/** Pass the div map to a string */
String eleId = (String) elementIdMap.get( request.getServletPath() );
/** Retrieve and parse the document using Jsoup*/
//URL externalUrl = new URL(url);
//Document document = Jsoup.parse(externalUrl, 10000);
File internalFile = new File(url);
Document document = Jsoup.parse(internalFile, "UTF-8");
/** Clean the document to prevent XSS only include tags and style below */
//document = new Cleaner(Whitelist.basic().addTags("div", "em", "h1", "h2").addAttributes("div","class", "style")).clean(document);
/** Select privactText tags from the id */
Element divContent = document.select(eleId).first();
/** Returned the text inside the div tag */
String parsedExternalContent = divContent.html();
/** Get all links inside div tag */
Elements links = divContent.select("a[href]");
String exitUrl = "/exit?logout=true&uri=";
/** Loop through the links and if the links are relative path add the exit.do to the link */
for (Element link : links) {
if (!link.attr("href").toLowerCase().startsWith("http://")) {
String urltext = link.attr("href");
String exitText = "/exit?logout=true&uri=";
...
}
}
modelMap.addAttribute("parsedExternalContent", parsedExternalContent);
return new ModelAndView ("externalParserContent", modelMap);

Answer 1

This is the way i did it when i needed to re-write an original string with "encoded" url:
Document doc = getHtmlDocumentFromString(htmlOnly);
Elements links = doc.select("a[href]");
/**
* since we would want to track link index per click - iterate links in the old fashion way (Elements is a List<Element>)
*/
for(int linkIndexTopToBottom = 0; linkIndexTopToBottom < links.size(); linkIndexTopToBottom++){
try{
Element link = links.get(linkIndexTopToBottom);
if (!UriUtils.isValidUrl(link.attr("href")))
continue;
...
link.attr("href",<NEW URL>);
}catch (MalformedURLException exception){
log.debug("Provided URL was not valid: " + links.get(linkIndexTopToBottom).attr("abs:href") + ", skipping link re-write");
}
}
return doc;
As you can see you need to set the attribute like:
link.attr("href", <NEW URL>);
since that part was missing from your post, i were not sure whether you do it or not
EDIT
The appending would be exactly the same idea:
link.attr("href", link.attr("href") + "<what you need to append with>");
The bottom line is you need to set href attribute to a new value
Example from the jSoup cook book