亚洲国产日韩欧美一区二区三区,精品亚洲国产成人av在线,国产99视频精品免视看7,99国产精品久久久久久久成人热,欧美日韩亚洲国产综合乱

If you think there is no problem with the code, you can try changing to a different version of tomcat, such as 8.0 or 8.5.

Tomcat9 seems to have some problems at the moment. I tried it two weeks ago and it can’t run

tomcat reports an exception Illegal access: this web application instance has been stopped already. Could not load exception information cannot reflect the root cause of the system startup failure. When encountering such exceptions, many developers may be a little overwhelmed because they don't know where the problem occurs. Here is a trick to help you accurately locate the reason why the tomcat system fails to start.

1. Prepare a configuration file, the name must be: logging.properties.
The content of the file is as follows:

handlers = org.apache.juli.FileHandler, java.util.logging.ConsoleHandler      

org.apache.juli.FileHandler.level = FINE    
org.apache.juli.FileHandler.directory = ${catalina.home}/logs/tomcat.log  
org.apache.juli.FileHandler.prefix = error-debug.    
     
java.util.logging.ConsoleHandler.level = FINE    
java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter

1. Place this file logging.properties under web-inf/classes of the java web project

2. Restart Tomcat
   At this time, you will find that tomcat automatically prints more useful exception information. By analyzing these newly printed abnormal information, you can immediately locate the problem.