java - MessageBodyProviderNotFoundException while running jar from command line -

i using java jersey framework(with maven), , use intellij ide. have encountered runtime exception happens when try run code command line (using maven compile , java -jar ) not when running within intellij, strange.

i have java code try make http on remote url , try read returned json lombok pojo :

string targeturl = "some valid url";  webtarget webtarget = client.target(targeturl);  response response = webtarget.request(mediatype.application_json_type).get();  parseresponse parseresponse = response.readentity(parseresponse.class); 

i not sure why, when hits last line "readentity()" method, error below:

org.glassfish.jersey.message.internal.messagebodyprovidernotfoundexception: messagebodyreader not found media type=text/json; charset=utf-8 

this strange, because have jersey-media-json-jackson dependency specified in pom.xml :

<dependency>         <groupid>org.glassfish.jersey.media</groupid>         <artifactid>jersey-media-json-jackson</artifactid>         <version>2.23</version> </dependency> 

and pojo class trying readentity() :

@data @jsonignoreproperties(ignoreunknown = true) public class parseresponse {     @jsonproperty("id")    private integer id;     ...other params... } 

and mentioned before, strange happens when try run on command line there no error when running in intellij:

mvn clean package java -jar target/nameofjar.jar 

did miss obvious here? have looked @ other people similar issues online haven't found solution.

thanks is

if inside jersey-media-json-jackson jar should see file

meta-inf/services/org.glassfish.jersey.internal.spi.autodiscoverable 

the contents of file should single qualified name of class implements name of file, namely

org.glassfish.jersey.jackson.internal.jacksonautodiscoverable 

this file used jersey auto-discoverable mechanism automatically register features without having explicitly register them. briefly, how works, jersey modules/jars have components should automatically registered, should have above named file located in jar, contents being name(s) of auto-discoverable component. jersey use service loader pattern load classes named in file, , register them.

the problem causes when creating uber jars can have 1 copy of file, can't have duplicates. if have multiple jars above file? 1 of files included in uber jar. one? knows, there 1 lucky winner. rest of jars, auto-discover mechanism never kicks in. case jackson feature, auto-discoverable registers jacksonfeature. can try explicitly register application, , should see works.

but other jars/modules may have file? it's reason when creating uber jars, should use maven-shade-plugin. plugin allows do, combine contents of files all discoverables included 1 single file. below example usage

<plugin>     <groupid>org.apache.maven.plugins</groupid>     <artifactid>maven-shade-plugin</artifactid>     <version>2.3</version>     <configuration>         <createdependencyreducedpom>true</createdependencyreducedpom>         <filters>             <filter>                 <artifact>*:*</artifact>                 <excludes>                     <exclude>meta-inf/*.sf</exclude>                     <exclude>meta-inf/*.dsa</exclude>                     <exclude>meta-inf/*.rsa</exclude>                 </excludes>             </filter>         </filters>     </configuration>     <executions>         <execution>             <phase>package</phase>             <goals>                 <goal>shade</goal>             </goals>             <configuration>                 <transformers>                     <transformer implementation="org.apache.maven.plugins.shade.resource.servicesresourcetransformer"/>                     <transformer implementation="org.apache.maven.plugins.shade.resource.manifestresourcetransformer">                         <mainclass>com.example.yourapp</mainclass>                     </transformer>                 </transformers>             </configuration>         </execution>     </executions> </plugin> 

this example taken dropwizard's getting started. can check out further explanation. main part of concern servicesresorcetransformer, concatenates services files.