IllegalAccessException in jersey-client-proxy when @BeanParam annotated class contains private fields

[divyanshshekhar]

Getting IllegalAccessException in jersey-client-proxy when @BeanParam annotated class contains private fields.

Consider the following example where,
Given that I have a POJO for employees as below:
Given a POJO representing an employee:

public class Employee {
    private String id;
    private String firstName;

    public Employee() {
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }
}

We can use the above class as @BeanParam in our service interface as below

    @GET
    @Path("employees")
    List<Employee> findEmployee(@BeanParam FindEmployeeRequest findEmployeeRequest);

The above works fine when used in jersey server application, however, in client application it runs into error with following error:

java.lang.IllegalAccessException: class org.glassfish.jersey.client.proxy.RequestParameters cannot access a member of class org.glassfish.jersey.client.proxy.MyBeanParamWithPrivateField with modifiers "private"
	at java.base/jdk.internal.reflect.Reflection.newIllegalAccessException(Reflection.java:394)
	at java.base/java.lang.reflect.AccessibleObject.checkAccess(AccessibleObject.java:714)
	at java.base/java.lang.reflect.Field.checkAccess(Field.java:1156)
	at java.base/java.lang.reflect.Field.get(Field.java:441)
	at org.glassfish.jersey.client.proxy.RequestParameters.addBeanParameter(RequestParameters.java:160)
	at org.glassfish.jersey.client.proxy.RequestParameters.addParameter(RequestParameters.java:139)
	at org.glassfish.jersey.client.proxy.WebResourceFactory.invoke(WebResourceFactory.java:203)
	... 5 more

Expectation

The API models and service interfaces should be compatible with both the jersey based server application and jersey based client proxy so as to enable sharing of common codebase among different projects using the same API.