Solve the exception of Tomcat startup exception creating userdatabase.

When a colleague re-configures a development environment, the following exception occurs when Tomcat is started:

10:24:45 org. Apache. Catalina. mbeans. globalresourceslifecyclelistener creatembeans

Severe: exception creating userdatabase mbeans for userdatabase

Javax. Management. malformedobjectnameexception: Missing Value in properties list

At javax. Management. objectname. createpropertiesmap (objectname. Java: 222)

At javax. Management. objectname. parse (objectname. Java: 93)

At first, it was still a problem in our project, because my project also had a class named userdatabase. Later, we deleted the deployment under Tomcat and reported this problem, I found out that it was a problem with Tomcat. I checked it online and finally found a solution, as shown below:

1. Check the <resourceparams name = "userdatabase">... </resourceparams> content in the server. xml file under tomcat.

2. Check the conf/tomcat-users.xml file content, my problem lies in this, the user name is empty!

After correction, everything is normal.