Unable to Access Request Parameter in SpringMVC Controller while redirecting to URL

Question

I am having a form which submits new articles to my controller.

JSP Page:

<form class="form-signin" method="post"
    action="/articleViewer">
<div class="control-group" style="margin-top: -5px;">
    <label class="control-label text-info" for="commentContent"><strong>Post
            Comment</strong></label>
    <div class="controls">
        <textarea class="FormElement" name="area2" id="commentContent"
        style="width: 100%;"></textarea>
    </div>
</div>
<button type="submit" class="btn btn-primary" style="margin-left: 90%;">Post</button>
</form>

Controller Method:

@RequestMapping(value="/articleViewer", method = RequestMethod.POST)
public String saveArticleComment (HttpServletRequest request, HttpServletResponse response,Principal principal, ModelMap map) throws ServletException, IOException{
    //processing request
    System.out.println("Link : "+Path.Jsp.ARTICLE_VIEWER_PAGE);
    return Path.Jsp.ARTICLE_VIEWER_PAGE; //this ARTICLE_VIEWER_PAGE = /articleViewer
}

Now from the above controller method I wanna redirect to another method where I want to pass currently saved article id as http://<myurl>/article?articleId="xyz".

Here is my get method code for handling the redirect.

@RequestMapping(value="/articleViewer", method= RequestMethod.GET)
public String articleViewer(HttpServletRequest request, Principal principal,
        ModelMap map, HttpServletResponse response)
        throws DatabaseException {
        //I wanna access article id here.
    return Path.Jsp.ARTICLE_VIEWER_PAGE;
}

I wanna know how could I access that passed request parameter in above method?

This means you have lost one important parameter in the url. — Roman C
– Roman C, Commented Jun 30, 2013 at 13:28
Yess After submiting the form I lost paramenter and it shows that page bloank bcz it takes ArticleID as input param — Complicated
– Complicated, Commented Jun 30, 2013 at 13:35
That's quite expected. Post parameters are sent in the request body, and not in the query string. You should save the comment and then redirect. See en.wikipedia.org/wiki/Post/Redirect/Get — JB Nizet
– JB Nizet, Commented Jun 30, 2013 at 13:47

Roman C · Accepted Answer · 2013-06-30 14:01:17Z

1

If you submit the action url without parameter, or use hidden field for this purpose then you should return that parameter back as a result. So, you don't get it lost, or redirect to the page where the parameter is not needed anymore. To pass parameter in the url use

<form class="form-signin" method="post" action="/articleViewer?varArticleID=94">

answered Jun 30, 2013 at 14:01

Roman C

1

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2 Comments

Complicated Over a year ago

By using this I got in URL /articleViewer?varArticleID=79 but its not Calling my Get method code

Complicated Over a year ago

I mean after this url also my form is Blank no article no comments

Complicated · Accepted Answer · 2013-07-01 02:39:22Z

1

I Resolved it by using Redirect attribute in return ...

return "redirect:/articleViewer?varArticleID="+getVarArticleID();

answered Jul 1, 2013 at 2:39

Complicated

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Comments

Niju · Accepted Answer · 2013-06-30 14:18:08Z

0

So if you need the page like as after submitting change the action value of form like

<form class="form-signin" method="post"
    action="/articleViewer?varArticleID={yourArticleid}">

Also after submit you need

return Path.Jsp.ARTICLE_VIEWER_PAGE+"?varArticleID="+request.getParameter("varArticleID");

edited Jun 30, 2013 at 14:18

answered Jun 30, 2013 at 13:47

Niju

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7 Comments

Complicated Over a year ago

My Method i.e saveArticleComment is mapped to this method How should i map it to /articleViewer?articleId=94

Complicated Over a year ago

after returning this it gives ERror 404

Complicated Over a year ago

Its shows Error 404 when i use return Path.Jsp.ARTICLE_VIEWER_PAGE+"?varArticleID="+request.getParameter("varArticleID");

Complicated Over a year ago

When i use only <form class="form-signin" method="post" action="/articleViewer?varArticleID={yourArticleid}"> and URL localhost:8888/articleViewer?varArticleID=79 after posting it blank bcz it is calling post method not get it should call get method with that URL

Niju Over a year ago

Ok Iam not strong in spring methods.I think the method for getting the data's for above url should write in GET method where you handling the reuest.

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