> On 30 Jan 2020, at 11:00, Xavier (Apache) <apa...@anazys.com> wrote: > >> >> On 30 Jan 2020, at 00:09, Christopher Schultz <ch...@christopherschultz.net >> <mailto:ch...@christopherschultz.net>> wrote: >> >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA256 >> >> Xavier, >> >> On 1/29/20 3:23 PM, Xavier (Apache) wrote: >>> Hello Tomcat list, >>> >>> I’m struggling with a classpath problem. I have a webapp deployed >>> under Tomcat. I have setup multiple tests (3 to be exact). They are >>> all running 9.0.20, one under macOS, and the other 2 under Debian >>> (same version for both). My app requires the jar lib to be loaded >>> in a specific order. What I was able to gather so far is that I >>> should do that customisation in myapp/WEB-INF/context.xml (it looks >>> like I don’t need to tell Tomcat to look for that file) >>> >>> I’m looking for some sample code to better understand how to do >>> it. >>> >>> So far I tried >>> >>> <?xml version="1.0" encoding="UTF-8"?> <Context >>> docBase="\webapps\CloudManager"> <Loader >>> className="org.apache.catalina.loader.VirtualWebappLoader"/> >>> <lib>xxxxxx</lib> <lib>yyyyyy</lib> ... </Context> >>> >>> xxxxxx and yyyyyy are jar files in myapp/WEB-INF/lib/xxxxxx.jar >>> >>> but without any luck. >>> >>> I’m probably missing something obvious, but I just can’t find it. >> >> Tomcat has no facility to force the loading of specific JARs in a >> specific order. There has been no consensus that e.g. "alphabetic" >> ordering should be enforced. There is no (servlet) spec-defined order, >> either. >> >> If you have some special libraries that must be loaded before others >> (rather than a complete and total ordering), you can use the >> <PreResources>[1] facility to establish a directory where some >> libraries are loaded first. I suppose you could use many PreResources, >> in order, to achieve a total ordering, but it will be a lot of typing. >> >> The VirtualWebappLoader has been deprecated for a long time. I can't >> even find the class in any currently-supported branch of Tomcat. >> >> - -chris >> >> [1] >> http://tomcat.apache.org/tomcat-9.0-doc/config/resources.html#Nested_Com >> <http://tomcat.apache.org/tomcat-9.0-doc/config/resources.html#Nested_Com> >> <http://tomcat.apache.org/tomcat-9.0-doc/config/resources.html#Nested_Com >> <http://tomcat.apache.org/tomcat-9.0-doc/config/resources.html#Nested_Com>> >> ponents >> -----BEGIN PGP SIGNATURE----- >> Comment: Using GnuPG with Thunderbird - https://www.enigmail.net/ >> <https://www.enigmail.net/> <https://www.enigmail.net/ >> <https://www.enigmail.net/>> >> >> iQIzBAEBCAAdFiEEMmKgYcQvxMe7tcJcHPApP6U8pFgFAl4yEJMACgkQHPApP6U8 >> pFiUiw//ae5zTje1y7YE0wTnBxIVwlM7mz2KaGsZnONEUUMtGsscx7hfgHHIcs+j >> R6mHSmeoH2YKlvG3qarcCvb0UpNXGjfORslbPcj1U4GQzUcftatcFPLGMejlWVBy >> xFUcpmGe52zJ4NUWt0zW+3Bq8HfuD2eBJ+eUky9jQ5qS3sOFjrjafiWx2ftjvikd >> E1qv1haoCq2Y9UwHq4K2gFoS8OTWvs3AHxZyrRYPoyKyQvSg3FTkNvy1DiNEeAqg >> E6ZDl3FWryur/2PtOV4LhbRE/0UoifCIchrRomHxnbep4cqDx+DivLPgsG8ms4Iv >> XQJiuWD3lWD3/GHm5ymEMgRNssZsO8EEIwoYkSk0ZueX4TaTWyYO4KEY4YHlukXt >> igaGjZCcKUVfEJnS8ZcWOhViwn8qNbZHTHi12m/3w/So+TBvbYilcvgGSNf1B6LT >> yqmPFccFuKYSGeiGhUxo0z0nYTbgXgR07Dwj82DzFmd0pOd8a+KLoYavLaWXnE2u >> 6oNWTtzXGfNjH0P0s4qqv0vSySxZZ/iP6NNIM0C2uJV4XtSeJGWCQ5R7ozAaNG9U >> 77VYBojXk/8LmO+asEeqFqex+vZAkVA/wpW1RW47NfgLhtnWY4LE3xeDuKLeclnM >> EBwyA3DObWdRiqzXv+ydlF9fliQFVEgxD3EaO//vk32Uif0Zbeo= >> =2Y4Q >> -----END PGP SIGNATURE----- >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >> <mailto:users-unsubscr...@tomcat.apache.org> >> <mailto:users-unsubscr...@tomcat.apache.org >> <mailto:users-unsubscr...@tomcat.apache.org>> >> For additional commands, e-mail: users-h...@tomcat.apache.org >> <mailto:users-h...@tomcat.apache.org> <mailto:users-h...@tomcat.apache.org >> <mailto:users-h...@tomcat.apache.org>> > > Thanks for the pointers Christopher. > > Here’s what I have so far, but I don’t understand why it doesn’t work (I get > a java.lang.ClassNotFoundException for a class that is in the prelib jars) > > -I added a directory mywebapp/WEB-INF/prelib with all the jars that should be > loaded first (the ones that should be loaded after are in the usual > mywebapp/WEB-INF/lib directory) > -mywebapp/WEB-INF/context.xml contains > > <?xml version="1.0" encoding="UTF-8"?> > <Context> > <Resources> > <PreResources > className="org.apache.catalina.webresources.DirResourceSet" > base=“/WEB-INF/prelib" webAppMount="/WEB-INF/lib" /> > </Resources> > </Context> > -I also tried with an absolute path for “base” without success (also I’d > really need a path relative to the webapp or at least the Tomcat > installation, is base=$CATALINA_BASE/webapps/mywebapp/WEB-INF/prelib” > correct?) > > Any idea about what I’m doing wrong? > > Thanks a lot, > > Xavier
I’m still struggling with this context.xml file. So far, it doesn’t load what is in the “prelib” folder, even if I put an absolute path. Anyone with a working sample? (ideally with a path relative to either Tomcat or the webapp) Thanks, Xavier
