Tomee 7.1.1: when there is an exception during JAXB marshaling, an incomplete response is sent with a 200 code

[Kean Erickson]

I would file this in JIRA but I'm having login troubles at the minute, I
want to put this here in case I forget because it definitely seems like a
bug, albeit one that only happens in a buggy usecase. The line "for (String
s : stuffs)" below creates an NPE, but the problem is that the response is
sent back with as a 200 and a clipped body.. which is simply "[{". It
stopped generating the response body when the property getter method was
hit.


My resource:


    @GET
    @ApiOperation(value = "Get stuff")
    @Produces(MediaType.APPLICATION_JSON)
    public List<TestDO> list(@Context HttpServletResponse response) {
        TestDO stuff = new TestDO();
        stuff.setId(1);

        List<TestDO> things = new ArrayList<>();
        things.add(stuff);
        return things;
    }

My data object:

@XmlRootElement(name = "Test")
@XmlAccessorType(XmlAccessType.FIELD)
@ApiModel(value = "Test", description = "Test object")
public class TestDO {

    private int id;
    private List<String> stuffs = null;

    /**
     * Empty constructor, required by JAXB.
     */
    public TestDO() {
    }

    public TestDO(int id, String stuffs) {
        this.id = id;
    }

    public int getId() {
        return id;
    }

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

    public List<String> getStuffs() {
        for (String s : stuffs)
            System.out.println(s);
        return stuffs;
    }

    public void setStuffs(List<String> stuffs) {
        this.stuffs = null;
    }

}



This error is shown in log when this happens:

24-Sep-2019 16:42:53.779 SEVERE [ouc5]
org.apache.cxf.jaxrs.utils.JAXRSUtils.logMessageHandlerProblem Problem with
writing the data, class java.util.ArrayList, ContentType: application/json