1. Problem Description 1. During testing today, Tomcat was found to be extremely slow to start. This is not the common random number issue, but rather it hangs for a long time at the “At least one JAR was scanned for TLDs yet contained no TLDs” message every time, even with only one project deployed! 2. Refer to …
Tomcat Project “Could not initialize class sun.font.FontScaler” Fix
Cause: Missing JAR package — ae-awt.jar
https://www.cnop.net/uploadfile/2018/0705/20180705041635119.zip
Extract the archive, find the ae-awt.jar file inside, and place it into Tomcat’s lib …
There are many popular Java EE containers today: Tomcat, JBoss, Resin, Glassfish, and more. Below is a simple comparison of these four Java EE containers. 1. Tomcat is a Java Web application server strongly supported by Apache. Thanks to its excellent stability and extensive documentation, it is widely …
Specific Symptoms: The container time and system time are out of sync. When accessing the container and checking the timezone, it shows “Etc/UTC ”. The log throws the following error: java.sql.SQLException: ORA-00604: 递归 SQL 级别 1 出现 ORA-01882: at oracle.jdbc.driver.T4CTTIoer.processEr …
Recently while integrating Redis with Tomcat to persist sessions, I encountered an error when starting Tomcat:
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'redisTemplate' defined …
Note: Before installation, you can re-download Tomcat to ensure it is in a normal state prior to installing this program.
Environment: Tomcat + Yunsuo 3.0
1. Download and extract the attachment: Attachment Download https://www.cnop.net/uploadfile/2017/0227/20170227025519812.zip #cd /usr.local/tomcat …
When deploying a project, if I don’t configure web.xml in my own project, all request links will follow the web.xml configuration under Tomcat, such as the homepage, timeout settings, etc.
The web.xml in Tomcat is generic; if not configured, it defaults to Tomcat’s web.xml, such as …
Recently, while configuring an nginx+tomcat+memcached cluster for session management, an error occurred. The method used the relatively efficient kryo approach.
Error message:
Caused by: com.esotericsoftware.kryo.SerializationException: Unable to deserialize object o …
How to Fix Kryo SerializationException in Nginx Tomcat Memcached Session Integration
Recently, while configuring an Nginx + Tomcat + Memcached cluster for session management, I encountered an error when using the more efficient Kryo serialization method.
The error message:
Caused by: com.esotericsoftware.kryo.SerializationException: Unable to deserialize object o …
While following up on a project recently, I noticed a large number of abnormal requests appearing in the backend Tomcat server logs. These showed up as requests from many suspicious domains and IPs, quickly flooding the website logs, as shown below: Since the frontend uses Nginx and its logs were normal, the above information basically confirms that the backend server was under a CC attack …
