Tomcat is one of the most commonly used third-party, open-source software used to deploy servers for Java applications. you can easily download the tomcat server on their official website “https://tomcat.apache.org/download-90.cgi”. There are billions of devices are running over the tomcat server.
While using the Tomcat server for the Java application, you might have encountered this common error message that reads “Server Tomcat v8.0 Server at localhost failed to start”.
This is one of the most common errors faced by complete beginners. There are 2 main reasons as to what caused this error.
1st type:
The first type is when the service was forcibly shut down at start-up or the port was occupied. To fix this you have to clean the Tomcat cache, to do the following, follow these steps.
Right-click-->Tomcat-->Clear.
Now, click on the link “No servers are available. Click this link to create a new server” that will be provided in the Servers tab. A box will open.
After this, click the blue link “Configure runtime environments”, a box will open. Click the Apache Tomcat server and press the “Remove” button. Apply changes.
Then add the server you are using (v8.0) and click the finish button. Once you’ve cleared the cache, close the Eclipse editor and then go to the directory D:\tomcat\apache-tomcat-8.0.17\bin to close Tomcat.
That’s how you tackle this issue. Now, if this error was caused due the port being used by some other application or service, there are two ways to deal with this.
Either you change the Tomcat port or you can find the application that is using the port and kill it or provide some other port to that application.
2nd Type:
The second type is when the start-up project is a maven project and the maven repository is either missing, not fully downloaded or broken.
Maybe the jar package is missing or the code is not recognized at the compile time. The error could be reported due to any of these causes or a combination of these so make sure you check these thoroughly.
The most straightforward and brute-force approach method is to close the Eclipse IDE. The next thing you have to do is go to the local maven repository and delete all the jar package files in this directory.
Then execute the “mvn help:system” command under CMD, after doing this, maven’s warehouse will download the files again.