部署使用Jersey API创建的War文件

Question

I am completely new to Java ( Beginner Java Developer). Our previous proj was created using Jersey API. I am trying to understand the project as I was not in the team of that project developers.

My Question is.. I have created the War file to that application and deployed it in tomcat. But whenever I click that project from the list, it returns an error (Requested resource is not available). I want know if I can deploy Jersey API web app in Tomcat or not? Also If I can, What may be reasons for that error? I tried everywhere and looked into all other threads but could not understand anything.

Also there is a in web.xml of our project. What is the use of this?

Please help me. Thanks a ton in advance.

Answer 1

I want know if I can deploy Jersey API web app in Tomcat or not?

Yes, you can. You should check your version of Tomcat, and which libraries are required to work with Jersey (usually Jersey jar itself and some common utilities). However, I didnt quite understand "was created using Jersey API". Did you use some Jersey-specific code? Because Jersey is just an implementation of some specification (namely JSR-311).

What may be reasons for that error?

Path is not specified properly, resource not initialized, etc.

Also there is a in web.xml of our project. What is the use of this?

It is a file that is responsible for the settings of 1 application. In your case, your war-archive. In web.xml you can specify the path to your war resources. Nowadays, all resources can be specified with annotations, and no need to modify web.xml exists.