Databases
StackOverflow2013
Postsdbo
POAccessing files/directories in webapp folder in Spring
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POAccessing files/directories in webapp folder in Spring
    primarykey
    data
    text
    <p>I'm inexperienced in Spring and everything I need to do now is to access and obtain a reference to files and folders in the webapp folder. Here is my relevant project hierarchy:</p> <pre><code>-src --main ---java (marked as source root) ----my -----package ------controller -------Home.java ---webapp ----images -----avatars </code></pre> <p>My code in Home.java:</p> <pre><code>@Controller @RequestMapping("/") public class Home { @RequestMapping(method = RequestMethod.GET) public String index(Model model, HttpServletRequest request) throws Exception { String test1 = request.getSession().getServletContext().getRealPath(""); String test2 = request.getSession().getServletContext().getRealPath("/"); String test3 = request.getRealPath(""); String test4 = request.getRealPath("/"); String test5 = request.getSession().getServletContext().getRealPath(request.getServletPath()); return "index"; } } </code></pre> <p><s>All the 5 requests return null. Am I doing something wrong?</s></p> <p>web.xml:</p> <pre><code>&lt;web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"&gt; &lt;display-name&gt;Test&lt;/display-name&gt; &lt;servlet&gt; &lt;servlet-name&gt;test&lt;/servlet-name&gt; &lt;servlet-class&gt;org.springframework.web.servlet.DispatcherServlet&lt;/servlet-class&gt; &lt;load-on-startup&gt;1&lt;/load-on-startup&gt; &lt;/servlet&gt; &lt;servlet-mapping&gt; &lt;servlet-name&gt;test&lt;/servlet-name&gt; &lt;url-pattern&gt;/&lt;/url-pattern&gt; &lt;/servlet-mapping&gt; &lt;context-param&gt; &lt;param-name&gt;contextConfigLocation&lt;/param-name&gt; &lt;param-value&gt;/WEB-INF/applicationContext.xml&lt;/param-value&gt; &lt;/context-param&gt; &lt;listener&gt; &lt;listener-class&gt;org.springframework.web.context.ContextLoaderListener&lt;/listener-class&gt; &lt;/listener&gt; &lt;session-config&gt; &lt;session-timeout&gt;10&lt;/session-timeout&gt; &lt;/session-config&gt; &lt;/web-app&gt; </code></pre> <p>What I'm trying to achieve (not shown in this example), is to code a controller responsible for the scaling of an image. For this reason I would need access to the src/main/webapp/_images folder.</p> <p>Thank you!</p> <p><strong>Update:</strong> simplified the example for better understanding.</p> <p><strong>Update2:</strong> thanks to the suggestion of @gigadot, I deployed the application as an exploded WAR and the problem is partly solved. Can someone tell me what's the difference in deploying the WAR as exploded? Is it something not recommended to do on a production server? Advantages/disadvantages?</p> <p>I think it's worth to explain the situation with an example. Let's say I'm coding a social network and I have to possibility to upload my personal profile picture. This picture will be uploaded to the <code>src/main/webapp/_images/avatars/[myid].jpg</code> folder. Is it recommended to upload pictures to the <code>webapp</code> folder? Or is there a better solution? I would like to be able to return a scaled instance of the image when accessing the URL <code>/images/[width]x[height]/[userid].jpg</code>.</p> <p>Deploying the WAR as exploded and implementing the <code>ResourceLoaderAware</code> (thanks @KevinSchmidt), I can make it work using this:</p> <pre><code>resourceLoader.getResource("file:" + request.getSession().getServletContext().getRealPath("/") + "_images/avatars/"); </code></pre> <p>To me it looks quite dirty, is it a good idea for a production server? Is there a better solution?</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USsatoshi
    1. USsatoshi
    plurals
    1. PL
      singulars
      1. LTLinked
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POAccessing files/directories in webapp folder in Spring
      1. USsatoshi
      1. VTBountyStart
    2. VO
      singulars
      1. POAccessing files/directories in webapp folder in Spring
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POAccessing files/directories in webapp folder in Spring
      1. This table or related slice is empty.
      1. VTUpMod
    1. COI care if the directory exists
      singulars
      1. POAccessing files/directories in webapp folder in Spring
      1. USsatoshi
    2. COAnyone...? Thanks
      singulars
      1. POAccessing files/directories in webapp folder in Spring
      1. USsatoshi
    3. COWhat do you want to do with this files, just return them to the client, or processing its content?
      singulars
      1. POAccessing files/directories in webapp folder in Spring
      1. USRalph
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload