1) Go to conf folder in tomcat installation directory e.g. C:\Tomcat 6.0\conf\ 2) Edit following tag in server.xml file <Connector connectionTimeout=”20000″ port=”8080″ protocol=”HTTP/1.1″ redirectPort=”8443″/> 3) Change the port=8080 value to port=80 4) Save file. 5) Stop your Tomcat and restart it.
There are three methods: First shutdown your Tomcat from the its bin directory (sh shutdown.sh). Then delete all the content of your Tomcat webapps folder (rm -fr *). Then rename your WAR file to ROOT.war, and finally start your Tomcat from the bin directory (sh startup.sh). Leave your war file in $CATALINA_BASE/webapps under its original … Read more
JDBC drivers register themselves in the JVM-wide singleton DriverManager which is shared by all web apps. If you have the same (as in class name) JDBC driver register twice from two different web apps, this might cause your problem. This is even more problematic if your web apps use different versions of the same JDBC … Read more
For copyright reasons the Servlet 5.0 API (implemented by Tomcat 10) and the Servlet 4.0 API (implemented by Tomcat 9) are incompatible: the API namespace changed from javax.* to jakarta.*. This can manifest in many ways: Software written for Servlet 4.0 does not compile against the API jars from Tomcat 10: cf. Servlet 5.0 JAR … Read more
You have a couple of options: Remove the out-of-the-box ROOT/ directory from tomcat and rename your war file to ROOT.war before deploying it. Deploy your war as (from your example) war_name.war and configure the context root in conf/server.xml to use your war file : <Context path=”” docBase=”war_name” debug=”0″ reloadable=”true”></Context> The first one is easier, but … Read more
When I place the .class file in the corresponding Tomcat directory, start the server and try to interact with the app, I get the following exception: java.lang.ClassNotFoundException: javax.servlet.http.HttpServlet I tried placing the javax.servlet-api-4.0.1 in the Tomcat/lib directory, but then I get: java.lang.ClassCastException: class com.example.controllers.BeerSelect cannot be cast to class jakarta.servlet.Servlet The jakarta.servlet.Servlet is part of … Read more
CORS’ preflight request uses HTTP OPTIONS without credentials, see Cross-Origin Resource Sharing: Otherwise, make a preflight request. Fetch the request URL from origin source origin using referrer source as override referrer source with the manual redirect flag and the block cookies flag set, using the method OPTIONS, and with the following additional constraints: Include an … Read more
Apparently, to get version 5.1.33 of MySQL JDBC driver to work with UTC time zone, one has to specify the serverTimezone explicitly in the connection string. jdbc:mysql://localhost/db?useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC
Caused by: java.lang.IllegalArgumentException: The servlets named [ControllerServlet] and [com.classmgt.servlet.ControllerServlet] are both mapped to the url-pattern [/ControllerServlet] which is not permitted It seems that you have mixed @WebServlet annotation based and web.xml based configuration. I doubt that you created a Servlet using the “Create Servlet” wizard which creates web.xml entry with url-pattern and then , added … Read more
A common practice is to configure this as a DataSource in the servlet container in question. It will provide you connection pooling facilities which will greatly improve performance. Also a common practice is to externalize the raw settings in some configuration file which is been placed in the classpath. In case you’re using Tomcat as … Read more