How Can i show urls clicked by user in Primefaces+JSF2 - jsf-2

Question

I am using JSF2 with Prime faces. I will want to show all the previous links or Urls clicked by user in every page.How can i do this?

Answer 1

Here's a good link for you: How can I get the request URL from a Java Filter?
What I would do is use something like that example and do a set of three URLs.
//Using linked example
public class MyFilter implements Filter {
public void init(FilterConfig config) throws ServletException { }
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws ServletException, IOException {
chain.doFilter(request, response);
String url = ((HttpServletRequest) request).getPathTranslated();
UrlBean urlBean = (UrlBean) FacesContext.getCurrentInstance()getApplication().getValueBinding("#{urlBean}");
urlBean.storeUrl(url);
}
public void destroy() { }
}
This is totally untested, but the idea should work. You would just need to implement some logic (probably a stack) for your component so it stores what you need. (Obviously you might end up at the same URL multiple times). I should note the UrlBean is just an abstract idea, you would have to implement it

Answer 2

Hi I have created this Singleton class to put the Url Browsed by a User.
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
public class UrlHistory {
#SuppressWarnings("rawtypes")
private static Map<String, List> store = new HashMap<String, List>();
private static UrlHistoryBean instance = null;
public static UrlHistoryBean getInstance() {
if (instance == null) {
instance = new UrlHistoryBean();
}
return instance;
}
LinkedList<UrlData> urlList = new LinkedList<UrlHistoryBean.UrlData>();
public void addUrl(String sessionId, String urlString, int urlId) {
UrlData data = new UrlData();
data.setUrlName(urlString);
data.setUrlId(companyId);
if (urlList.isEmpty()) {
urlList.add(data);
} else {
boolean isEqual = false;
for (UrlData urlDataObj : urlList) {
if (urlDataObj.equals(data))
isEqual = true;
}
if(!isEqual)
urlList.addFirst(data);
}
store.put(sessionId, urlList);
}
#SuppressWarnings("rawtypes")
public static Map<String, List> getStore() {
return store;
}
#SuppressWarnings("rawtypes")
public static void setStore(Map<String, List> store) {
UrlHistoryBean.store = store;
}
public class UrlData {
String urlName;
int urlId;
public String getUrlName() {
return UrlName;
}
public void setUrlName(String UrlName) {
this.UrlName = UrlName;
}
public int getUrlId() {
return urlId;
}
public void setUrlId(int urlId) {
this.urlId = urlId;
}
public boolean equals(UrlData rData) {
boolean bEqual = false;
if (this.getUrlId() > 0 && rData.getUrlId() > 0 && this.getUrlId() == rData.getUrlId()) {
bEqual = true;
}
return bEqual;
}
}
}