Best practice to save temp files on tomcat?

Question

I need to demo a xml based data interchange system. It is demoed offline on a trusted computer at school. The application will get database later but just for this presentation I only need to show the layout, opening and saving of xml-files and how the table gets data from the xml.

So, what would be the best location to let the web app create the xml files temporarily so I can showcase this app? I'm using Eclipse and Tomcat.

As mentioned, security is not an issue at all, since this version is NOT going to be online. Also, it's ok if the files get erased each time the application is run.

They need to exist only for the duration of the presentation where the application is run once. So, I'm clueless what would be the best location and how to get the path to such location not depending on the computer used.

Thank you.

See http://stackoverflow.com/questions/617414/create-a-temporary-directory-in-java — Wim Deblauwe, May 21 '14 at 06:33
If it's okay that the files get erased, and presumably as it's a demo there won't be a lot of them, why not just keep them in memory in a map or something similar? — Evan Knowles, May 21 '14 at 06:34
You can use property `java.io.tmpdir` to get the tmp location and save your files there. — Omoro, May 21 '14 at 06:35

score 16 · Accepted Answer · answered May 21 '14 at 06:38

Use the property java.io.tmpdir to get the tomcat temp folder and save your files there. That will be a good place to temporarily keep them in. So you can define it as follows:

public static final String TMP_DIR = System.getProperty("java.io.tmpdir")

score 9 · Answer 2 · answered May 21 '14 at 06:47

Either use the property java.io.tmpdir as indicated or use the servlet context attribute javax.servlet.context.tempdir defined in the specification. For tomcat that attribute can be changed by the workDir attribute on the context.

You can use that attribute by a call to servletContext.getAttribute("javax.servlet.context.tempdir")

See tomcat documentation for detail.

score 3 · Answer 3 · answered Jul 14 '16 at 16:58

3

Old question, but if there is for creating temp file why not use File.createTempFile function?

Example:

File temp = File.createTempFile("real",".howto");
temp.deleteOnExit();

answered Jul 14 '16 at 16:58

oak

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score -3 · Answer 4 · edited Dec 26 '17 at 07:25

-3

You can use this method to get temp file location according to your Operating System

public static String getSystemFileLocation()
{
    File tmpFile = null;
    String fileLocation="/tmp/";
    if (System.getProperty("os.name").toUpperCase().indexOf("WINDOWS") == 0) {
        tmpFile=new File("c:\\temp");
        if(tmpFile.exists()) {
            fileLocation="c:\\temp\\";
        }
        else {
            tmpFile.mkdir();
            fileLocation="c:\\temp\\";
        }
    }
    else if (System.getProperty("os.name").toUpperCase().indexOf("WINDOWS") == -1) {
        fileLocation="/tmp/";   
    }
    return fileLocation;
}

edited Dec 26 '17 at 07:25

Sasikumar Murugesan

4,412
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answered May 21 '14 at 06:51

rohit

37
1
5

1

Negative and dangerous way... – Daniele Baggio Oct 06 '16 at 13:54
This questions is talks about temp folder in tomcat but your code is to get temp folder in os level – Sasikumar Murugesan Dec 26 '17 at 06:50

Best practice to save temp files on tomcat?

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