getting json in java rest service

Question

I made a restful service by netbeans from my localhost and I choose glassfish 4.1.1 as my webserver then I wanted to test it. it was working when it wanted to give me an xml response but when I tried to get an JSON response it gave me a 500 ERROR as below

GET RequestFailed RequestFailed --> Status: (500) 
Response: {

HTTP Status 500 - Internal Server Error


type Exception report

messageInternal Server Error

descriptionThe server encountered an internal error that prevented it from fulfilling this request.

exception 
javax.servlet.ServletException: javax.ejb.EJBException


root cause 
javax.ejb.EJBException


root cause 
javax.persistence.PersistenceException: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.6.1.v20150605-31e8258): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: Error in allocating a connection. Cause: Connection could not be allocated because: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
Error Code: 0


root cause 
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.6.1.v20150605-31e8258): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: Error in allocating a connection. Cause: Connection could not be allocated because: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
Error Code: 0


root cause 
java.sql.SQLException: Error in allocating a connection. Cause: Connection could not be allocated because: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.


root cause 
javax.resource.spi.ResourceAllocationException: Error in allocating a connection. Cause: Connection could not be allocated because: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.


root cause 
com.sun.appserv.connectors.internal.api.PoolingException: Connection could not be allocated because: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.


root cause 
com.sun.appserv.connectors.internal.api.PoolingException: Connection could not be allocated because: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.


root cause 
com.sun.appserv.connectors.internal.api.PoolingException: Connection could not be allocated because: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.


root cause 
javax.resource.spi.ResourceAllocationException: Connection could not be allocated because: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.


root cause 
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.


root cause 
java.net.ConnectException: Connection refused: connect


note The full stack traces of the exception and its root causes are available in the GlassFish Server Open Source Edition 4.1.1 logs.


GlassFish Server Open Source Edition 4.1.1 

}

I searched on web and stack and see that it occursed because of eclipselink so I tested it with eclipselink 2.6.3 and 2.6.1 and reinstall my localhost but got errors again:

GET RequestFailed RequestFailed --> Status: (500) 
Response: {
HTTP Status 500 - Internal Server Error

type Exception report

messageInternal Server Error

descriptionThe server encountered an internal error that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: org.glassfish.jersey.server.ContainerException: java.lang.NoClassDefFoundError: Could not initialize class org.eclipse.persistence.jaxb.BeanValidationHelper
root cause

org.glassfish.jersey.server.ContainerException: java.lang.NoClassDefFoundError: Could not initialize class org.eclipse.persistence.jaxb.BeanValidationHelper
root cause

java.lang.NoClassDefFoundError: Could not initialize class org.eclipse.persistence.jaxb.BeanValidationHelper
note The full stack traces of the exception and its root causes are available in the GlassFish Server Open Source Edition 4.1.1 logs.

GlassFish Server Open Source Edition 4.1.1


}

sorry for my bad English language and thank you so much for putting your time for my problem even if just read it.

Could you post the relevant code from the server?

Claudia
– Claudia

2016-07-09 14:16:43 +00:00
Commented Jul 9, 2016 at 14:16 — Claudia
– Claudia, Commented Jul 9, 2016 at 14:16

Community · Accepted Answer · 2017-05-23 11:48:32Z

1

The stacktrace shows that the code is failing with java.lang.NoClassDefFoundError

java.lang.NoClassDefFoundError: Could not initialize class org.eclipse.persistence.jaxb.BeanValidationHelper

Make sure that org.eclipse.persistence.jaxb.BeanValidationHelper class dependecy is present during the runtime.

You can read more about NoClassDefFoundError @ How to solve java.lang.NoClassDefFoundError?

=========================================================================== Update:

It looks like there is a bug with GlassFish 4.1.1. The JIRA is still OPEN https://java.net/jira/browse/GLASSFISH-21440. There is one JIRA on Jersey as well https://java.net/jira/browse/JERSEY-2888. At the end, they have provided some workaround for the problem. Please verfiy with that workaround.

edited May 23, 2017 at 11:48

CommunityBot

11 silver badge

answered Jul 9, 2016 at 13:23

Rolson Quadras

4463 silver badges8 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Seyed Ali Roshan Over a year ago

in netbeanse restful project i have no web.pom how should I find that it works?

Rolson Quadras Over a year ago

It looks like there is a bug with GlassFish 4.1.1. The JIRA is still OPEN java.net/jira/browse/GLASSFISH-21440. I have updated my answer. Hope you would be able to get it working with the work around mentioned in java.net/jira/browse/JERSEY-2888.

Seyed Ali Roshan Over a year ago

Yes it's is about 1 year old bug in 4.1.1 I change my glassfish to 4.1 and everything work normal Thank you for your time

Seyed Ali Roshan · Accepted Answer · 2016-10-19 08:36:29Z

1

for making the Solution bold and clear,

recording to upper answer, in this case all you need to don't use glassfish 4.1.1 ,just install glassfish 4.1 and this matter solved (because solving the 4.1.1 error took too long time from me and i suggest you to Do not try to solve it)

edited Oct 19, 2016 at 8:36

answered Aug 7, 2016 at 20:23

Seyed Ali Roshan

1,5941 gold badge19 silver badges42 bronze badges

Collectives™ on Stack Overflow

getting json in java rest service

2 Answers 2

3 Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

3 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related