Why does getRealPath() return null when deployed with a .war file? [duplicate]

Answer 1

Bit late, but I came across this question when I was having this issue in WebLogic. My solution was to add this to my weblogic.xml:

<?xml version='1.0' encoding='UTF-8'?>
<weblogic-web-app>
    <container-descriptor>
        <show-archived-real-path-enabled>true</show-archived-real-path-enabled>
    </container-descriptor>
</weblogic-web-app>

I found this solution better for when you don't want to (or can't) edit the configuration on the WebLogic server.

Answer 2

The following fix my problem.

  public EHWInit()
  {
   String resetRootPath = ""; 

   try{
   resetRootPath = this.getClass().getResource("/").getPath();
      boolean isWinOS = System.getProperty("os.name").startsWith("Windows");
   if( isWinOS )
      {resetRootPath = resetRootPath.substring(1, resetRootPath.lastIndexOf("chucec"));}
   else
      {resetRootPath = resetRootPath.substring(0, resetRootPath.lastIndexOf("chucec"));}

   resetRootPath = resetRootPath.replace("%20", " ");
   System.out.println("EHWInit#75:resetRootPath=" + resetRootPath); 

When you try to get getRealPath by this.getClass().getResource("/").getPath() when OS is Windows, then you may get a string like following:

EHWInit#73:getPath=/C:/Program%20Files%20(x86)/Apache%20Software%20Foundation/Tomcat%208.5/webapps/chucec/WEB-INF/classes/

Therefor, you need do some extra works on the returning string.Furthermore, if you want to get getRealPath by request. You can replace the code like follows:

  public void resetSystemPath(HttpServletRequest paramHttpServletRequest)
  {
    //String str = paramHttpServletRequest.getRealPath("/");

    HttpSession session = paramHttpServletRequest.getSession(true);
    String str = session.getServletContext().getRealPath("/");
    System.out.println("getRealPath:"+str);

Answer 3

This solves the problem also:

weblogic.xml

<?xml version = '1.0' encoding = 'windows-1252'?>
<weblogic-web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.bea.com/ns/weblogic/weblogic-web-app http://www.bea.com/ns/weblogic/weblogic-web-app/1.0/weblogic-web-app.xsd" xmlns="http://www.bea.com/ns/weblogic/weblogic-web-app">

<container-descriptor>
  <index-directory-enabled>true</index-directory-enabled>
  <show-archived-real-path-enabled>true</show-archived-real-path-enabled>
</container-descriptor>

<virtual-directory-mapping>
  <local-path>bla.war</local-path>
  <url-pattern>*</url-pattern>
</virtual-directory-mapping>

<context-root>bla</context-root>

Answer 4

if you want to write into

use

this.getClass().getResource("/").getPath();

to get the path