Spring-boot – Multiple Spring-boot applications running on one Tomcat

deploymentspring-boottomcat

Can I have two (or more) Spring-boot applications running on one Tomcat?

I have two applications packaged as war files and I would like to run them on one Tomcat server. However, when I deploy them, I get the following exception:

org.springframework.jmx.export.UnableToRegisterMBeanException: 
    Unable to register MBean [org.springframework.boot.actuate.endpoint.jmx.DataEndpointMBean@2361d8ee] with key 'dumpEndpoint'; 
    nested exception is javax.management.InstanceAlreadyExistsException: org.springframework.boot:type=Endpoint,name=dumpEndpoint

The default endpoints that every Spring-boot application registers (like /health etc.) clash. Is there some workaround for this or is not possible to achieve this setup?

Thank you for any responses!

Best Answer

As Spring Boot Reference says:

If your application contains more than one Spring ApplicationContext you may find that names clash. To solve this problem you can set the endpoints.jmx.uniqueNames property to true so that MBean names are always unique.

endpoints.jmx.domain=myapp
endpoints.jmx.uniqueNames=true

Related Solutions

Java – Tomcat 6 Virtual Hosting Same Spring Application

The problem is that the name of the bean must be unique per JVM. Since you're deploying the same war twice, you have two solutions:

change the registration behaviour of the Spring JMX exporter (see the documentation)
define your own ObjectNamingStrategy to dynamically change the name of the beans at startup (you would end up with names like app1.mybean and app2.mybean)

C# – How to change the Page Title in ASP.Net 1.1

With ASP.Net 1.1, first you have to set the runat attribute on the title markup :

<title id="PageTitle" runat="server">WebForm1</title>

Then from the code behind :

// We need this name space to use HtmlGenericControl
using System.Web.UI.HtmlControls;

namespace TestWebApp
{

      public class WebForm1 : System.Web.UI.Page
      {
            // Variable declaration and instantiation
            protected HtmlGenericControl PageTitle = new HtmlGenericControl();

            private void Page_Load(object sender, System.EventArgs e)
            {
                  // Set new page title
                  PageTitle.InnerText = "New Page Title";
            }
      }
}

Imports System.Web.UI.HtmlControls

Namespace TestWebApp

    Public Class WebForm1
        Inherits System.Web.UI.Page

        Protected PageTitle As HtmlGenericControl = New HtmlGenericControl()

        Private Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)

            PageTitle.InnerText = "New Page Title"
        End Sub

...

    End Class
End Namespace

Best Answer

Related Solutions

Java – Tomcat 6 Virtual Hosting Same Spring Application

C# – How to change the Page Title in ASP.Net 1.1

Related Topic