WebUtils#getRealPath("config-data/TESTDEV") cannot be resolved to absolute file path

In windows , when use the WebUtils.getRealPath("config-data/TESTDEV") , it returns error message : ServletContext resource [/config-data/TESTDEV] cannot be resolved to absolute file path.

but WebUtils.getRealPath("/") can return the true path . that is to say , this method can't parse the backslash followed by a string . but it works good in linux/unix .