I am using Spring MVC. There is a requirement that some user selections remain globally and always in the url parameter. I might also be able to remove it with code at will.
Is there something like Persistent Page Data(like in Tapestry http://tapestry.apache.org/persistent-page-data.html) for Spring MVC.
A link to a similar quesion thats unanswered: http://osdir.com/ml/java.appfuse.user/2005-08/msg00507.html
Thanks
Update
Eventually I used a simple technique, where:
1. I would capture the current page url with query paramters.
2. Add or replace the new parameters into this url.
<c:set var="contextPath" value="${pageContext.request.contextPath}"></c:set>
<c:set var="servletPath" value="${requestScope['javax.servlet.forward.servlet_path']}"></c:set>
<c:set var="currentPath" value="${contextPath}${servletPath}"></c:set>
ageone
where replaceUrlParameter() uses regex to replace or add the query parameter.
Keep this parameters in session and write the Servlet Filter that would add them to any request or would modify request URL so they are visible in URL.
Related
I've got a paginated list of cars, on a Spring Boot server, with the parameters sort, range, desc, page, etc to filter and sort by and am generating the URL in Thymeleaf that looks like:
example.com/cars?page=5&sort=mileage
I am wanting to be able to add more parameters to a URL with a few of these already but I'm quite new to this and don't really know how to get the current URL with all the parameters to add more params without losing the previous ones look like
example.com/cars?page=5&sort=mileage&desc=true
I've found an answer to do something like this on Spring but would ideally want to do it on the Thymeleaf template, is this possible?
Get full current url thymeleaf with all parameters
I found that you can get hold of specific parameters in Thymeleaf using ${param.sort} to get hold of the param sort, could something similar to this get hold of all the params currently?
Thanks
If someone is still looking for a thymeleaf template only solution, you could use ${#request.getRequestURI()} with ${#request.getQueryString()} and add your additional parameters via concatenation:
<a th:href="#{${url}}" th:with="url=${#request.getRequestURI()+'?'+#request.getQueryString()+'&foo=bar'}">Link</a>
If you need to escape query parameters, you can use #uris.escapeQueryParam():
<a th:href="#{${url}}" th:with="url=${#request.getRequestURI()+'?'+#request.getQueryString()+'&foo='+#uris.escapeQueryParam('b a r')}">Link</a>
Some further details:
You have to use th:with, otherwise the parser will throw TemplateProcessingException: Access to request parameters is forbidden in this context. in newer thymeleaf versions.
It also works when the current query is empty, the url generator will create a valid url, in my example including one ? and no & in the query part.
in my JavaEE-Application, I am using Apache Shiro[1] for user-authentication.
My users are navigating via GET-URLs, as for example "/company/index.xhtml?companyId=327".
I have enabled programmatic login, following a guide[2] from BalusC:
SavedRequest savedRequest = WebUtils.getAndClearSavedRequest(Faces.getRequest());
My problem is, that savedRequest.getRequestUrl() does not contain the previous mentioned GET-parameteres, when my case is asynchronous POST with or without RememberMe; just "/company/index.xhtml" is returned, for example. It seems as if "FacesAjaxAwareUserFilter" (see [2]) is not GET-params aware. Everything works fine on synchronous GET-calls.
How do I get the GET-parameters after an shiro-redirect because of authentication-needed in case of using "FacesAjaxAwareUserFilter"?
[1] https://shiro.apache.org/
[2] Followed this great article about JavaEE and Shiro: http://balusc.blogspot.de/2013/01/apache-shiro-is-it-ready-for-java-ee-6.html
JSF ajax requests are sent to the URL as generated by <h:form>. This is however by default not exactly the current URL including the query string, it's by default the current URI without the query string.
There are several ways to fix this. The simplest but ugliest way is to use JS:
<h:form id="foo">
...
</h:form>
<script>document.getElementById("foo").action += "?" + location.search;</script>
The cleanest way would be to create a custom ViewHandler whose getActionURL() (as used by <h:form>) will return the desired URL with the query string.
JSF utility library OmniFaces has already such a component which does that based on view parameters: the <o:form> which basically extends the <h:form> with support for includeViewParams="true" (exactly the same way as <h:link> does).
<f:metadata>
<f:viewParam name="companyId" value="#{bean.company}" />
</f:metadata>
...
<o:form includeViewParams="true">
...
</o:form>
Hi I have four JSP file say one.jsp, tow.jsp, three.jsp and four.jsp
each file has next and previous link to navigate to the all jsp's and last jsp file that is four.jsp has submit button. Now I want values of all fields from first three jsp's into the fourth one, to submit data into DB when the use hit the submit button from four.jsp
I do not have to use the hidden fields to pass the values from jsp to jsp and I don't want to use the session to store the data. Is there any way to pass the data(VO) from one jsp to another without using hidden fields and session?
NOTE : I am using spring. and I am not interested in JSF for navigation.
So you need a stateful bean, might want to look into something like Spring Web Flow. It was made for handling this sort of stuff.
If you don't want to store it in the session, you would have to start looking into EJB which has stateful possibilities.
Here's some documentation:
http://static.springsource.org/spring/docs/2.5.6/reference/ejb.html
P.S. EJB stores stuff in the session as well, don't think there's any getting around it, unless you serialize the POJO and store it as a cookie.
I'm new in Spring MVC, I just started my first project and I'm doing some research to be sure to set it up in a proper way (should work in the long-term!).
I already know that for a part of the project, I will need to manually change small fragments of the page through Ajax. I know it's possible to change part of the page (using Tiles). What I really need, though, is for example to change a single line in a table containing dynamically generated data (i.e. data coming from the database).
Can you suggest anything?
I don't want to use JSF or Spring JS.
Thank you.
You have at least two choices:
render on the server, send the update html snippet to the brower and use JavaScript to replace them
send an AJAX request to the server, but this time return only the data (JSON) and the "render" the table line in the browser (or just update some pices of text)
For the fist choice you need a dedicated jsp file (and tiles configuration) to render only a single line. As fare as I know, there is no technical support.
What you can do, to reduce the amount of duplicated code is to use that single line rendering jsp in like in include in the one that renders the complete table.
Of course instead of using JSP to render the single line you can also use the Java Method that handles the request, and make it returning the html string.
I have a tiny application in MVC 3.
In this tiny application, I want my URLs very clear and consistent.
There's just one controller with one action with one parameter.
If no value is provided (that is, / is requested by the browser), then a form is displayed to collect that single value. If a value is provided, a page is rendered.
The only route is this one:
routes.MapRoute(
"Default",
"{account}",
new { controller = "Main", action = "Index", account = UrlParameter.Optional }
);
This all works fine, but the account parameter never appears in the address line as a part of the URL. I can manually type test.com/some_account and it will work, but other than that, the account goes as a post parameter and therefore does not appear. And if I use FormMethods.Get in my form, I get ?account=whatever appended to the URL, which is also not what I want and which goes against my understanding. My understanding was that the MVC framework would try to use parameters set in the route, and only if not found, it would append them after the ?.
I've tried various flavours of setting the routes -- one route with a default parameter, or one route with a required parameter, or two routes (one with a required parameter and one without parameters); I've tried mixing HttpGet/HttpPost in all possible ways; I've tried using single action method with optional parameter string account = null and using two action methods (one with parameter, one without), but I simply can't get the thing appear in the URL.
I have also consulted the Steven Sanderson's book on MVC 3, but on the screenshots there are no parameters either (a details page for Kayak is displayed, but the URL in the address bar is htpp://localhost:XXXX/).
The only thing that definitely works and does what I want is
return RedirectToAction("Index", new { account = "whatever" });
But in order to do it, I have to first check the raw incoming URL and do not redirect if it already contains an account in it, otherwise it is an infinite loop. This seems way too strange and unnecessary.
What is the correct way to make account always appear as a part of the URL?
My understanding was that the MVC framework would try to use
parameters set in the route, and only if not found, it would append
them after the ?
Your understanding is not correct. ASP.NET MVC doesn't append anything. It's the client browser sending the form submission as defined in the HTML specification:
The method attribute of the FORM element specifies the HTTP method used
to send the form to the processing agent. This attribute may take two
values:
get: With the HTTP "get" method, the form data set is appended to the URI specified by the action attribute (with a question-mark ("?")
as separator) and this new URI is sent to the processing agent.
post: With the HTTP "post" method, the form data set is included in the body of the form and sent to the processing agent.
ASP.NET MVC routes are used to parse an incoming client HTTP request and redispatch it to the corresponding controller actions. They are also used by HTML helpers such as Html.ActionLink or Html.BeginForm to generate correct routes. It's just that for your specific scenario where you need to submit a user entered value as part of the url path (not query string) the HTML specification has nothing to offer you.
So, if you want to fight against the HTML specification you will have to use other tools: javascript. So you could use GET method and subscribe to the submit handler of the form and inside it manipulate the url so the value that was appended after the ? satisfy your requirements.
Don't think of this as ASP.NET MVC and routes and stuff. Think of it as a simple HTML page (which is what the browser sees of course) and start tackling the problem from that side. How would you in a simple HTML page achieve this?