Jersey:没有找到用于Java类和MIME mediatype应用程序/json的消息体编写器

after trying to figure out what's my problem I finally decided to ask you how to solve my problem. I've seen different people with the same problem and I tried all the things they were adviced to do but nothing helped with my issue. So basically I'm having a RESTful Service which I build using Jersey. For my client I would like to return an object in JSON Format. I read through different tutorials and decided that it makes sense to use jersey-json-1.8 library. I added everything to my project as usual and tried to run it but each time I'm calling the service (via get request atm.) I'm getting HTTP Error Code 500 (internal server error) and my server responds that no message body writer could be found. If I'm returning XML it works just fine and everything is great. I also tried copying jersey-json-1.8.jar to my Tomcat lib folder because I had to do this with the mysql lib I'm using but it didn't help either. I would be really glad if you could help me out to get this stuff working! If you need any more information just leave a comment and I'll provide it as quickly as humanly possibly :)after trying to figure out what's my problem I