link to a file

In an html page I have the following link (which does not work) to an .odt file so formed:
C: \ Users \ dodoc \ IBM \ rationalsdp \ workspace \ .metadata \ .plugins \ org.eclipse.wst.server.core \ tmp2 \ wtpwebapps \ documenta71 \ o1 \ documents \ dirdip \ diruffprinci001 \ dirdip192_1.odt
Instead the link to the file:
C: \ Users \ dodoc \ IBM \ rationalsdp \ workspace \ .metadata \ .plugins \ org.eclipse.wst.server.core \ tmp2 \ wtpwebapps \ documenta71 \ o1 \ documents \ dirdip \ diruffprinci001 \ dirdip192_2.ods
works well (ie I see the document).
The only difference is that the .odt files do not see them while the .ods files I see them.
That is, with .odt files, the system asks me to save the file while with .ods files it displays them immediately.
The application uses Tomcat7 to access the files.

It doesn’t even read the .rtf files while reading the .pdf and .txt files