Jersey Exception : SEVERE: A message body reader for Java class

Question

I have a Jersey based Rest WS which outputs JSON. I am implementing a Jersey Client to invoke the WS and consume the JSON response. The client code I have is below

Answer 1

I know that this post is old and you figured this out a long time ago, but just to save the people who will read this some time.

You probably forgot to add annotation to the entity you are passing to the endpoint, so Jersey does not know how to process the POJO it receives. Annotate the pojo with something like this:

@XmlRootElement(name = "someName")

Answer 2

To make it work you only need two things. Check if you are missing:

1. First of all, you need @XmlRootElement annotation for your object class/entity.

2. You need to add dependency for jersey-json if you are missing.For your reference I added this dependency into my pom.xml.

   <dependency>
       <groupId>com.sun.jersey</groupId>
       <artifactId>jersey-json</artifactId>
       <version>1.17.1</version>
   </dependency>
   

Answer 3

just put this

    <init-param>
        <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
        <param-value>true</param-value>
    </init-param>