Tomcat project deployment problems

My local tomcat version: Apache Tomcat/8.0.3.0

Server: Apache Tomcat/6.0.37

All JVMs are: 1.7.0 _ 40-b43

Previously, the project was running normally. After I updated some modules, the redeployment (export war package) encountered a problem, but there was no problem in testing on my local machine. The server prompts the following error:

The following web applications were stopped (reloaded, undeployed), but theirclasses from previous runs are still loaded in memory, thus causing a memoryleak (use a profiler to confirm):/MyApp

After Google's review, it is generally said that there is a problem with the project itself, some say that there is a problem with the configuration file, and some say that the jar is repeated. For some previous reasons, I have been skeptical about the problem of quartz, but I have not found any problem, so I transferred the problem to Tomcat, the same problem still occurs when I change Tomcat on the server to 8.0. Why is there no problem in deploying Tomcat on my local server ??

The division method is used to compare with the previous project. It is found that a jar package is added under my Lib, and the reason for this jar package is suddenly unknown, this jar package used V2 before, And I later added the latest V3 version. The Code styles of these two versions are quite different. I did not remove them after testing, after the jar package is removed, the above problems no longer occur after redeployment.

 

Tomcat project deployment problems