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Solution

MessageBodyWriter not found for media type=application/json : this error occurs, because you have missing jersey-media-json-jackson dependency.

To resolve the issue please add the required library to your project. Because Maven and Gradle are two the most popular build automation tools I provide the dependency entry for each one.

Maven

To add the missing dependency just go to the Maven Repository and choose appropriate version or copy past the following code:

<dependency>
  <groupId>org.glassfish.jersey.media</groupId>
  <artifactId>jersey-media-json-jackson</artifactId>
  <version>2.32</version>
</dependency>

Gradle Version

When you are using Gradle you can choose the newest Gradle version. Check the link to find the newest one. When I was writing this post it was the v7.4.2.

...
compile group: 'org.glassfish.jersey.media', name: 'jersey-media-json-jackson', version: '2.32'
...

Select Version

Please verify which version you should add to your project. You can check the available version in Central Maven Repository.

MessageBodyWriter not found for media type=application/json

Summary

If we use third party libraries, we often encounter the problem of incompatibility of libraries. When we change / raise the version of one library, it may turn out that it no longer contains a built-in dependency. Then, unfortunately, we have to find the missing library and attach it ourselves.

Maven Dependency Tree

In the process of finding the missing dependency, we can use the dependency tree command:

mvn dependency:tree

The snippet from execution the above column looks like the following code:

[INFO] com.bigdataetl.spark:jar:0.0.0-SNAPSHOT
[INFO] +- net.lingala.zip4j:zip4j:jar:2.6.1:compile
[INFO] +- info.batey.kafka:kafka-unit:jar:1.0:test
[INFO] |  +- junit:junit:jar:4.11:compile
[INFO] |  |  \- org.hamcrest:hamcrest-core:jar:1.3:compile
[INFO] |  \- org.apache.zookeeper:zookeeper:jar:3.4.10:provided
[INFO] +- org.apache.kafka:kafka-clients:jar:0.11.0.3:compile
[INFO] |  +- org.xerial.snappy:snappy-java:jar:1.1.2.6:compile
[INFO] |  \- org.slf4j:slf4j-api:jar:1.7.25:compile
[INFO] +- org.apache.kafka:kafka_2.11:jar:0.11.0.3:test
[INFO] |  +- net.sf.jopt-simple:jopt-simple:jar:5.0.3:test
[INFO] |  +- com.yammer.metrics:metrics-core:jar:2.2.0:test
[INFO] |  +- org.slf4j:slf4j-log4j12:jar:1.7.25:provided
[INFO] |  \- com.101tec:zkclient:jar:0.10:test
...
etc...
Could You Please Share This Post? 
I appreciate It And Thank YOU! :)
Have A Nice Day!

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