Eclipse Jetty is like the sleek, high-performance sports car of web servers—rapid, efficient, and capable of handling high traffic loads with ease. It’s a Java-based web server and Servlet engine that powers a significant number of applications, combining scalability with simplicity. In this blog, we will go through the essentials of setting up Jetty, using its features, and troubleshooting issues you might encounter.

Why Choose Eclipse Jetty?

The primary goal of Jetty is to support web protocols such as HTTP1, HTTP2, HTTP3, and WebSocket while ensuring maximum performance with low latency. Whether you are deploying a traditional web application or embedding Jetty into your application, it maintains compatibility with years of Servlet development. Imagine Jetty as an agile assistant that optimally maneuvers through the web, ensuring everything runs smoothly!

Setting Up Jetty

Let’s walk through a practical example of setting up Jetty for your web applications.

Creating a New Jetty Base

• First, create a directory for your Jetty base:

shell
$ mkdir jetty-base  
$ cd jetty-base

• Next, start Jetty with desired modules:

shell
$ java -jar $JETTY_HOME/start.jar --add-modules=http,ee10-deploy

• To deploy your web application:

shell
$ cp ~/src/myproj/target/mywebapp.war webapps
$ java -jar $JETTY_HOME/start.jar 

Multiple Versions Deployment

If you need to manage multiple versions, the process is similar:

• Create your Jetty base and navigate into it:

shell
$ mkdir jetty-base  
$ cd jetty-base

• Start Jetty, adding multiple modules:

shell
$ java -jar $JETTY_HOME/start.jar --add-modules=http,ee10-deploy,ee8-deploy

• Copy your WAR files for different versions:

shell
$ cp ~/src/myproj/target/mywebapp10.war webapps
$ cp ~/src/myproj/target/mywebapp8.war webapps
$ echo "environment: ee8" > webapps/mywebapp8.properties
$ java -jar $JETTY_HOME/start.jar

Embedding Jetty

Jetty can also be embedded within your own Java applications using a simple configuration:

java
Server server = new Server(port);
server.setHandler(new MyHandler());
server.start();

Embedded Servlet Example

If you need to use servlets, here’s how you can do it:

java
Server server = new Server(port);
ServletContextHandler context = new ServletContextHandler();
context.addServlet(MyServlet.class, "/*");
server.setHandler(context);
server.start();

Building Jetty from Source

If you wish to build Jetty from source, you can easily clone the repository:

shell
$ git clone https://github.com/jetty/jetty.project.git 
$ cd jetty.project 
$ mvn -Pfast clean install  # fast build bypasses tests and other checks

Documentation and Resources

For detailed information on using Jetty, you can refer to these valuable resources:

• Jetty Documentation
• Operations Guide
• Programming Guide
• Contribution Guide

Troubleshooting Common Issues

While working with Eclipse Jetty, you may encounter some common issues. Here are some troubleshooting tips:

• Jetty fails to start: Check if the port is already in use or if the configuration files are correctly set up.
• WAR file not deploying: Ensure that the WAR file path is correct and that Jetty has the permissions to access it.
• Unexpected HTTP errors: Review the server logs; they often provide insights on what went wrong.

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Conclusion

At fxis.ai, we believe that such advancements are crucial for the future of AI, as they enable more comprehensive and effective solutions. Our team is continually exploring new methodologies to push the envelope in artificial intelligence, ensuring that our clients benefit from the latest technological innovations.