Error on Tomcat Embedded startup

Question

I'm working on a Spring Boot (v1.3.3.RELEASE) project. The included Tomcat Embedded version is 8.0.32.

I'm getting this error:

2016-08-01 14:51:23.354 ERROR 6704 --- [ost-startStop-1] o.a.catalina.session.StandardManager     : Exception loading sessions from persistent storage

java.io.EOFException: null
    at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2335)
    ...

I read about the same error on this question: exception loading sessions from persistent storage but I cannot find the solution to my issue.

I tried to apply the solutions suggested in the aswers, but in my case I cannot find the way to "Clean Tomcat Work Directory" or just to make a clean deploy of my application.

How can I solve this? Where can I find work folder for Tomcat Embedded version?

NOTE I'm using Eclipse as IDE

Answer 1

I finally found the solution to my issue.

Reading the anwer to this question: How to disable Tomact session persistence in Spring Boot via Manager pathname? (suggested by AntJavaDev) I configured this bean:

@Bean
public EmbeddedServletContainerFactory servletContainer() {
    TomcatEmbeddedServletContainerFactory tomcat = new TomcatEmbeddedServletContainerFactory();
    tomcat.addContextCustomizers(new TomcatContextCustomizer() {

        @Override
        public void customize(Context context) {
            if (context.getManager() instanceof StandardManager) {
                // print local path name
                System.out.println(((StandardManager) context.getManager()).getPathname());
            }
        }
    });
    return tomcat;
}

This way I discovered where cached sessions are stored for Tomcat Embedded (on Windows):

C:\Users\<my-user>\AppData\Local\Temp\<random-id>\servlet-sessions\

I deleted the SESSIONS.ser file in this folder and the error is magically disappeared.