A url is hit from browser now I want to get that url in my dataBean to extract its parameters for some checks.
How can I get that URL dynamically in that particular databean?
for instance :
someone hit
https://someAddress/AjaxForm?id=someid
I need to capture this url and get value of Id. How to do it?
you can do something likewise,
request.getRequestURL() // gives your current URL
where request is an instance of HttpServletRequest.
UPDATED :
If you are trying to find parameter which are comes along with URL, then
rather then do above mentioned my trick,
directly do likewise,
request.getParameter("id");
String url=request.getRequestURL()
String id=request.getParameter("id");
To get the parameter from url
request.getParameter("id");
And to insert it, in javascript add the parameter by attaching it to url
var url=baseurl+"?id="+id;
in the doGET method you write
String idValue=request.getParameter("id");
so the method will look like this
protected void doGET(HTTPServletRequest request,HTTPServletResponse response){
//some code here
String idValue=request.getParameter("id");//idValue will hold the value you passed in URL
//some more code here
}
Related
I am getting the URL dynamically which has few placeholders. But i need to pass the parameters to the placeholders.
Below is the URL which i am getting dynamically
http://example.com/name/{name}/age/{age}
i need to pass parameters for name and age for the above url. How can we achieve that using java.
I guess you are looking Rest Client to call this URL and get response.
http://example.com/name/{name}/age/{age}
String resourceURL = "http://example.com/name";
ResponseEntity<String> response = restTemplate.getForEntity(resourceURL + "/swarit/age/20", String.class);
I would also suggest to do little research before posting question.
I have following application URI structure:
ip:port/applicationName/someAction
How can I get following part of URI programmatically:
ip:port/applicationName/
I tryed
servletContext.getContext()
but it returns only applicationName.
P.S.
this works
String applicationBasePath = request.getRequestURL().substring(0,request.getRequestURL().indexOf("/",request.getRequestURL().indexOf("/")+2));
and this:
request.getRequestURL().substring(0, request.getRequestURL().indexOf(request.getRequestURI()))
But I don't like it.
I believe you need to get HttpServletRequest and there you can extract that information from getRequestURL().
The problem with servlet context only is that your application can be access e.g. via http://127.0.0.1/ or http://192.168.1.1/ and you don't know that without having actual request done. If you can define any "canonical" server name, you can do it e.g. like here: Getting server name during servlet initialization
ie. String serverName = getServletContext().getInitParameter("serverName"); with defined init parameter.
I couldn't write code better than:
public static String getApplicationBasePath(HttpServletRequest request) {
String absolutePath = request.getRequestURL().toString();
String contextPath = request.getRequestURI().toString();
return absolutePath.substring(0,absolutePath.indexOf(contextPath));
}
original url : http://pricecheckindia.com/go/store/ebay/52440?ref=velusliv
redirected url : http://www.ebay.in/itm/Asus-Zenfone-6-A600CG-A601CG-White-16-GB-/111471688863?pt=IN_Mobile_Phones&aff_source=DA
I need a program that will take the original url and print the redirected url.
How to get this done in java.
public static void main(String[] args) throws IOException, InterruptedException
{
String url = "http://pricecheckindia.com/go/store/ebay/52440?ref=velusliv";
Response response = Jsoup.connect(url).followRedirects(false).execute();
System.out.println(response.url());
}
It seems that you are being redirected via JavaScript code, which Jsoup doesn't support (it is simple HTML parser, not browser emulator). Your choice then is to either use tool which will support JavaScript like Selenium web driver, or parse your page to get url from click here link from
If it is taking too long to redirect, then please click here
text.
You can use Jsoup to get this link by adding to your current code
Document doc = response.parse();
String redirectUrl = doc.select("a:contains(click here)").attr("href");
System.out.println(redirectUrl);
which will return and print
http://rover.ebay.com/rover/1/4686-127726-2357-15/2?&site=Partnership_PRCCHK&aff_source=DA&mpre=http%3A%2F%2Fwww.ebay.in%2Fitm%2FAsus-Zenfone-6-A600CG-A601CG-White-16-GB-%2F111471688863%3Fpt%3DIN_Mobile_Phones%26aff_source%3DDA
so now all we need to do is parse query from this URL to get value of mpre key, which encoded version looks like
http%3A%2F%2Fwww.ebay.in%2Fitm%2FAsus-Zenfone-6-A600CG-A601CG-White-16-GB-%2F111471688863%3Fpt%3DIN_Mobile_Phones%26aff_source%3DDA
but after decoding it will actually represents
http://www.ebay.in/itm/Asus-Zenfone-6-A600CG-A601CG-White-16-GB-/111471688863?pt=IN_Mobile_Phones&aff_source=DA
To get value of this key and decode it you can use one of solutions from this question: Parse a URI String into Name-Value Collection. With help of method from accepted answer in previously mentioned question we can just invoke
URL address = new URL(redirectUrl);
Map<String,List<String>> urlQuerryMap= splitQuery(address);
String redirected = urlQuerryMap.get("mpre").get(0);
System.out.println(redirected);
to see result
http://www.ebay.in/itm/Asus-Zenfone-6-A600CG-A601CG-White-16-GB-/111471688863?pt=IN_Mobile_Phones&aff_source=DA
I need to get "query parameters" from this URL with GWT:
127.0.0.1:8888/App.html?gwt.codesvr=127.0.0.1:9997#Login&oauth_token=theOauthToken&oauth_verifier=123456
I need to get the oauth_verifier
However, Window.Location.getParameter("oauth_verifier"); is returning null.
How to get this?
You can try this using getHash():-
string s= Window.Location.getHash();
I am trying to use a RequestDispatcher to send parameters from a servlet.
Here is my servlet code:
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String station = request.getParameter("station");
String insDate = request.getParameter("insDate");
//test line
String test = "/response2.jsp?myStation=5";
RequestDispatcher rd;
if (station.isEmpty()) {
rd = getServletContext().getRequestDispatcher("/response1.jsp");
} else {
rd = getServletContext().getRequestDispatcher(test);
}
rd.forward(request, response);
}
Here is my jsp, with the code to read the value - however it shows null.
<h1>response 2</h1>
<p>
<%=request.getAttribute("myStation") %>
</p>
Thanks for any suggestions.
Greener
In your servlet use request.setAttribute in the following manner
request.setAttribute("myStation", value);
where value happens to be the object you want to read later.
and extract it later in a different servlet/jsp using request.getAttribute as
String value = (String)request.getAttribute("myStation")
or
<%= request.getAttribute("myStation")%>
Do note that the scope of usage of get/setAttribute is limited in nature - attributes are reset between requests. If you intend to store values for longer, you should use the session or application context, or better a database.
Attributes are different from parameters, in that the client never sets attributes. Attributes are more or less used by developers to transfer state from one servlet/JSP to another. So you should use getParameter (there is no setParameter) to extract data from a request, set attributes if needed using setAttribute, forward the request internally using RequestDispatcher and extract the attributes using getAttribute.
Use getParameter(). An attribute is set and read internally within the application.
In your code,
String test = "/response2.jsp?myStation=5";
You are adding myStation=5 as query string.As the query string parameters are stored
as request parameters in Request Object.
Therefore you can use ,
It works fine.Thanks.