I have a jsp page which iterates a list of users. Each user has his own display picture. I want to display these display pictures.
The problem is that when the page is loaded all the images are the same instead of a different image for each user.
The image tag in the iterator is this :
<img src="<s:url action="getUserImage">
<s:param name="user">
<s:property value="userId"/>
</s:param>
</s:url>"/>
and the action looks like this
this.inputStream = ByteArrayInputStream(userService.getUserById(Integer.parseInt(user)).getDisplayPicture());
While debugging I discovered that when executing the action for each image, the 'user' property is always the same.
The funny thing is that when I inspect the imgs elemnt on a browser, the src parameters are all correct (meaning each of them has its own different values).
I'm using spring framework, auto wiring action classes ..
struts.objectFactory value ="spring"
Shouldn't userService.getUserById(Integer.parseInt(user) be userService.getUserById(Integer.parseInt(userId) ?
#Component
#Scope("prototype")
did the trick !
action class was reusing the same id for each request
Related
Short Question, Is it possible to make a database call in the first load of home page using Struts 2? I have this old project of mine, just a simple online shop(wasn't able to finish it though) and i recalled that i was having a hard time with my home page outputting products listed in the database since struts needed to trigger an action before doing anything. Can you like preload some actions before proceeding to the home JSP? I'm a beginner in struts and could just do simple redirect and other basic actions.
You have many ways to do it. But most easiest way is mapping a action with the home page URL. Action class should do whatever database loading or other logic and forward to the JSP page.
Use a list method with s:iterator on your home.jsp.
You can use the s:action tag in your home page. There are 2 different ways it could be approached.
the only thing in your home page is the <s:action/> tag and let it render the result of the action: executeResult="true" attribute.
specify the var="myaction" attribute and set executeResult="false". You can then access everything from the action through the var name. for example <s:property value="%{myaction.myproperty}"/>
The docs for the s:action tag can be found here: https://struts.apache.org/docs/action.html
I know it must be simple, but still I am not able to figure it out.
I have a link on a jsp page.
When this link is clicked I want another tab (of browser) to open up.
The view of this new page is defined by action class, which needs a form field value.
The problem I am facing is that I can not get the values of form fields to the action class without submitting the form. And submitting the form changes the view of the original jsp as well, which defeats the whole purpose of opening a new tab.
So I need a way to get the form field values to action class without resetting the view of original jsp page.
One way I came across was URL re-writing but that would be my last option.
Please suggest something!!
Thanks!!
Firstly I would like to point out that currently possible (to my knowledge anyway) to force a new tab to appear, it is dependent on the users' browser and the settings that they have see here for more infomation.
Now onto your question, since links cannot send form data (on their own) you have 2 options:
You can use a form "submit" button pointing to the URL you want to send the data to and to and add the target="_blank" to the form which will cause a new page to open up when the form is submitted.
You can add a javascript event to your link so that when it is pressed you append the value of the input to the URL and open a new window with that URL.
Personally I would choose the first option.
Here is a simple example of option one which doesn't remove the input value when you submit...
<html>
<body>
<form action="test1.html" method="post" target="_blank">
<input type="text" name="bob" />
<input type="submit" value="Hello"/>
</form>
</body>
</html>
You could do an ajax call, or dynamically build the link url with get parameters in it.
I've a tomcat application with jsf 1.1
Case:
My application has a jsp (let name it /create.jsp) that contains a form to create a Business Object (imagine type person). One of the attributes of this Business Object is a relation to itself (the BO person, has an attribute father, that is also of type person). For this porpose, in the jsp, I have a selectable, and a button. The button enables to create new Business Object (in this case, a person). Therefore, the jsp show in the popup is the same that the one shown in the main window
Problem:
I'm facing wrong behaviours in the main window.
Cause:
I've studied the case, and the reason of the problem is the ids of the views stored in the server. When the users requires a new page, the server creates a view (ViewRoot) and stores it at the session. The jsp path is used as the id of the View. When the user submits a form, it will rehuse the same view stored in the session.
The problem in my case is that the popup ViewRoot, and the main window ViewRoot share the same id. So when the main window is shown, its viewRoot will be stored (let say id /create.jsp), but, when the popup is shown, its viewRoot will overwrite the main one in session. After closing the popup, the user will try to submit the main page, but in the server, there is no such a ViewRoot.
Possible Solution:
I've been thinking on changing the ViewRoot id creation, but I thing that this is not feasible (at least if I don't modify the jsf library).
---OLD TEXT---
I have a jsp with a form (let name it /create.jsp), that opens a popup window. This popup will also use /create.jsp .
Due to that JSF view-id, is fomed by the jsp path, both pages will share same id. So when the popup is displayed, the view stored in the session for the main page is overwritten by the new one. Because of this, the application is not working properly.
Is there any way to change the ids of the views? anyone has any solution?
Thanks
You probably want to look into using a subview . You can assign a name-space within this that will essentially create a new namespace within the page. In facelets that would be:
<f:view id="main">
<ui:include "myOtherJsp.jsp" /> <!-- This containing a subview -->
</f:view>
Alternatively I think you may just need to separate the page into multiple views:
<f:view id="mainpage">
<p>Page content</p>
</f:view>
<f:view id="popup">
<p>My Popup</p>
</f:view>
I don't know the specifics of your application, but I can't see a situation where there's a reason to not have multiple views/forms. I'm guessing separation will fix your problem. You can use some elements of JSF outside the view ( so there's no reason to use a single view per page unless you're forced.
Caveat: I'm a JSF2 developer for the most part and I haven't done a JSF1.1 app in a long time.
My final solution is the following:
Create a jsp name popup_create.jsp, that only contains an inlcude to the create.jsp
Duplicate create.jsp entry in facesconfig with popup_create.jsp
Create a ViewHandler (add it in config) with an extension of ViewHandlerImpl, where createView & restoreView methods are ovewritten, so that the viewId, in case that is create.jsp, and we are in a popup, it will modify the viewId to poup_create.jsp.
As I think this may be done in a more elegant way, it is the only way I've found.
I may be missing a couple of points, but I've hacked together a jsf/richfaces app and want to be able to do the simplest ajax-based nav:
main page contains ref to my backing bean's menu
<h:form>
<rich:dropDownMenu binding="#{PrismBacking.nodeMenu}" />
</h:form>
this refers to the code for the backing bean methods
this is my main page ajax panel
<rich:panel id="content">
<a4j:include viewId="#{PrismBacking.viewId}" />
</rich:panel>
i can't work out how to get the backing bean to use the selected item from the rich:dropDownMenu to update that which is returned by getViewId.
i guess:
1) i need to ensure the menu items in the getNodeMenu method have the right payload so setViewId is called with the correct String and my rich:panel id="content" is reRendered.
any pointers as to how to do this would be greatly appreciated.
mark
You are not setting the reRender attribute anywhere in your code (in the menu items) so the panel is not going to be updated after you select an item from the dropdown.
You also have to set the ajaxSubmit attribute en each menuItem to true in order to execute an ajax request. Also check that your listener is executed.
Take a look at the example http://livedemo.exadel.com/richfaces-demo/richfaces/dropDownMenu.jsf?c=dropDownMenu . You can download the code if you want from the richfaces site.
Using binding should be avoided if possible. Take a look at the RichFaces demo - there are source codes for each example, and see how it is achieved.
(This doesn't answer your question, and for better :) )
I'm writing a testing utility- I want to show multiple finished HTML "pages" in a single browser window.
Is this possible? I'm using Java Servlets.
For example, normally the user goes to a utility screen, fills in a bunch of fields and POSTS this to my servlet, which builds up a full HTML stream based on their input and writes it to HttpServletResponse.getWriter(). When the user views source, they get a <html> ... </html>.
What I want to do is allow users to request multiple "screens" and get the results in a single web page where you'd scroll down to see the 2nd, 3rd, etc. screens, maybe there is some kind of divider in between. I thought of frames or iframes, but didn't have luck. I have seen where I can write my big html stream to a javascript variable, then use document.write to dump it into the iframe. But that seems pretty awkward, and I'd have to be really careful about escaping quotes and stuff.
You will have to use iframes or frames to do this. A single web page can only contain one set of html tags and thus one html page.
Another idea would be to render the page by your script and then capture a picture of it and then have a page containing images. You will of course loose all interaction with the page.
I'm not sure what you're trying with your frames, but I imagine frames should work OK for what you've described.
Instead of trying to post to more than one URL from your form, you just post to a servlet that returns a page with the frameset, and each frame has a source that points to one of the URLs you want to test. For example:
<form action="testServlet" method="post">
<input type="text" name="someValue" />
</form>
The testServlet then returns a page with this content:
<frameset rows="33%,33%,33%">
<frame src="testUrl1?someValue=value">
<frame src="testUrl2?someValue=value">
<frame src="testUrl3?someValue=value">
</frameset>
The only problem with this is that you're doing a GET instead of a POST, but that's easy to get around. All you would need do is to implement the doGet method within your servlets and just call doPost from within doGet.
Just leave out the <html>/</html> tags for each page and wrap the whole thing inside a single large ....
Like this maybe:
<html>
[page1Content]
<hr />
[page2Content]
<hr />
[page3Content]
<hr />
</html>