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plantuml / plantuml-server

PlantUML Online Server
https://plantuml.com/
GNU General Public License v3.0
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Plantuml server is not working on Tomcat 10 #237

Closed mkde1 closed 1 year ago

mkde1 commented 1 year ago

I followed the instructions under the title of "Installation of the PlantUML Server" and installed "Tomcat 10" as the JEE 5 web server according to the link below. Then I downloaded the "plantuml.war" file and placed it inside "C:\Program Files\Apache Software Foundation\Tomcat 10.0\webapps\". After placing "plantuml.war" file, "plantuml" directory has been created automatically.

Tomcat 10 server works without a problem but when I hit "localhost:8080/plantuml" it gives 404 error. link: https://plantuml.com/server

Two screenshots have been added. webappmanager plantuml-404

mkde1 commented 1 year ago

UPDATE According to localhost log file I've encountered this error: SEVERE [http-nio-8081-exec-1] org.apache.catalina.core.StandardWrapperValve.invoke Allocate exception for servlet [plantumlservlet] java.lang.UnsupportedClassVersionError: net/sourceforge/plantuml/servlet/PlantUmlServlet has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0 (unable to load class [net.sourceforge.plantuml.servlet.PlantUmlServlet])

mkde1 commented 1 year ago

SECOND UPDATE --ISSUE RESOLVED-- 1-I have switched to JDK instead of JRE. 2-Then I started to receive jsp error(503) instead of runtime error I was taking before. SEVERE [http-nio-8080-exec-10] org.apache.catalina.core.StandardContext.loadOnStartup Servlet [jsp] in web application [/plantuml] threw load() exception java.lang.ClassNotFoundException: org.eclipse.jetty.jsp.JettyJspServlet 3-Fortunately, I found this link: https://github.com/plantuml/plantuml-server/releases 4-Downloaded "plantuml-jsp-v1.2022.6.war" and deployed it. 5-It worked.

SUGGESTION: If you somehow download from this source "https://sourceforge.net/projects/plantuml/files/plantuml.war/download" and doesn't work(404 or 503 error), then try downloading files from this address "https://github.com/plantuml/plantuml-server/releases".