Question

Basically my problem is a that I need to copy an uploaded file (which is placed in a temporary folder on my server providers Tomcat ie. not a local Tomcat).

The code I’m using works when I deploy my project on my local machine but stops working when I deploy it live.
I’ve found out that it has something to with my permissions in java.policy.

What I need to find out is how do I get access to the folder in which Tomcat stores the temporary file using Java.

When reading catalina.out this is the clue that the log gives me.

/usr/local/tomcat/work/Catalina/project name here/context of project here/upload_490341a6_12b1d397355_76ce_00000001.tmp

I’m thinking somewhere along the lines (note: this is not an actual method 😛 )

ServletActionContext.getContext().getSuperHiddenTemporaryCatalog();

The code snippet at the bottom has one flaw.

sourceFile and targetFile points to the same directory at the moment.

I want the sourceFile path to be the temporary tomcat-folder.

Thanks in advance! 😀

---

public String saveImage(File file, String uploadedFileName) {

    String path = ServletActionContext.getServletContext().getRealPath("images");

    System.out.println(path);

    String fullFileName = path + "/" + uploadedFileName;

    System.out.println(fullFileName);

    boolean successful = false;

    try {

        File sourceFile = new File(fullFileName);

        File targetFile = new File(path + "/" + uploadedFileName);

        InputStream in = new FileInputStream(sourceFile);
        OutputStream out = new FileOutputStream(targetFile);

        byte[] buf = new byte[1024];
        int len;
        while ((len = in.read(buf)) > 0) {
            out.write(buf, 0, len);
        }
        in.close();
        out.close();


    } catch (Exception e) {

        successful = false;

        e.printStackTrace();

    }

    if (successful) {

        return "context of project/images/" + uploadedFileName;

    } else {

        return "";

    }

}

Answer 1

File tempDir = (File) servletContext.getAttribute("javax.servlet.context.tempdir");

should give you access to your temporary directory in Tomcat. It would be strange if you could not at least read files from there.