bundles/org.apache.jasper.glassfish/src/org/apache/jasper/servlet/JspCServletContext.java
public String getRealPath(String path) {

        if (!myResourceBaseURL.getProtocol().equals("file"))
            return (null);
        if (!path.startsWith("/"))
            return (null);
        try {
            return
                (getResource(path).getFile().replace('/', File.separatorChar));
        } catch (Throwable t) {
            return (null);
        }

    }
public String getRealPath(String path) {

        if (!myResourceBaseURL.getProtocol().equals("file"))
            return (null);
        if (!path.startsWith("/"))
            return (null);
        try {
            return
                (getResource(path).getFile().replace('/', File.separatorChar));
        } catch (Throwable t) {
            return (null);
        }

    }
Return the real path for the specified context-relative
virtual path.

@param path The context-relative virtual path to resolve