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POhow do I pass a query within a spring mvc controller?
 

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  1. POhow do I pass a query within a spring mvc controller?
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    <p>assume you have something like this in normal servlet without using spring mvc:</p> <pre><code>if(username == "X" &amp;&amp; password =="Y"){ response.sendRedirect("./user/welcomePage.jsp"); }else{ response.sendRedirect("./login.jsp?wrongPass=true"); } </code></pre> <p>and if the username &amp;&amp; password is wrong, after redirection to login.jsp page, inform user that the username or password is wrong, somewhere in the login.jsp page in red color:</p> <pre><code>&lt;p style="color:red"; &lt;%= (request.getParameter("wrongPass")==null)? "visibility:hidden":"" %&gt;;"&gt; Your username/password is wrong !&lt;/p&gt; </code></pre> <p>My question is, is there any way to pass an argument like:</p> <pre><code>response.sendRedirect("./login.jsp?wrongPass=true"); </code></pre> <p>inside Spring MVC controller ?</p> <p>coz if we have a controller like this:</p> <pre><code>@Controller @RequestMapping(value ="/") public class Welcome{ public String welcome(@RequestParam("j_username") String username, @RequestParam("j_password") String password){ . . . return "login"; </code></pre> <p>as log as we need to return a String to form a page &amp; because we have InternalResourceViewResolver defined:</p> <pre><code>&lt;bean &gt;class="org.springframework.web.servlet.view.InternalResourceViewResolver"&gt; &lt;property name="prefix" value="/WEB-INF/views/" /&gt; &lt;property name="suffix" value=".jsp" /&gt; &lt;/bean&gt; </code></pre> <p>if we pass the argument in our controller like: return "login?wrongPass=true" after using InternalResourceViewResolver that will create something like :</p> <pre><code>login?wrongPass=true.jsp Which is totally wrong ... </code></pre> <p>now, what is your solution to solve this problem (without) adding that String to model inside our controller &amp; fetch the parameter inside JSP ? I want the browser url become something like: </p> <pre><code>http://localhost:8080/myProject/login.jsp?wrongPass=true </code></pre>
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    1. USMehdi
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    1. COPlease tell me you're not actually doing plaintext password comparisons.
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      1. POhow do I pass a query within a spring mvc controller?
      1. USJonathon Reinhart
    2. COno I'm not actually doing it in real world, this is just a code which i wote just here, my point is something different & you'll understand it if you read the question till its end. this bunch of code is just to seize that point & make reader direction straight to the point fast.
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      1. POhow do I pass a query within a spring mvc controller?
      1. USMehdi
 

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