Null params in method of web-service

Question

I use Jersey for WS. I have the following method:

@Path("...")
@POST
public Response updateConfigs(@Context HttpServletRequest request, ....
        ConfigurationItemList itemList) {
    ...
}

Where itemList is POST param. When I try to call this method with empty POST params, I get an exception:

[#|2012-10-12T14:08:52.623+0200|SEVERE|glassfish3.1.1|com.sun.jersey.spi.container.ContainerResponse|_ThreadID=25;_ThreadName=Thread-2;|The exception contained within MappableContainerException could not be mapped to a response, re-throwing to the HTTP container
java.io.EOFException: No content to map to Object due to end of input
       at org.codehaus.jackson.map.ObjectMapper._initForReading(ObjectMapper.java:2173)
       at org.codehaus.jackson.map.ObjectMapper._readValue(ObjectMapper.java:2106)
       at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1004)
       ...
|#]

[#|2012-10-12T14:08:52.624+0200|WARNING|glassfish3.1.1|javax.enterprise.system.container.web.com.sun.enterprise.web|_ThreadID=25;_ThreadName=Thread-2;|StandardWrapperValve[...ApplicationConfig]: PWC1406: Servlet.service() for servlet ....ApplicationConfig threw exception
java.io.EOFException: No content to map to Object due to end of input
       at org.codehaus.jackson.map.ObjectMapper._initForReading(ObjectMapper.java:2173)
       at org.codehaus.jackson.map.ObjectMapper._readValue(ObjectMapper.java:2106)
       at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1004)
       at org.codehaus.jackson.jaxrs.JacksonJsonProvider.readFrom(JacksonJsonProvider.java:410)
       ....
|#]

What `@Consumes` annotation do you use? How is `ConfigurationItemList` mapped from/to JSON/XML/...? — , Nov 08 '12 at 07:45
`@Consumes(MediaType.APPLICATION_JSON)` Convert is made by Jersey. — Anton Tsivarev, Nov 08 '12 at 07:49

score 1 · Answer 1 · 2012-11-08T12:17:34.107

1

The error you get

java.io.EOFException: No content to map to Object due to end of input

is what I would expect for an empty input. Since there is no JSON to consume, what do you expect JAX-RS to do?

Edit: In JAX-RS 2.0, validation will be included.

edited Nov 08 '12 at 12:17

answered Nov 08 '12 at 08:35

I want catch this exception. – Anton Tsivarev Nov 08 '12 at 09:00

score 1 · Accepted Answer · edited May 23 '17 at 11:56

1

I suspect that the only possible workaround is to use your own JAX-RS data provider, which will properly handle incoming NULLs. See also: JAX-RS / Jersey how to customize error handling?

edited May 23 '17 at 11:56

Community

1
1

answered Nov 08 '12 at 13:52

yegor256

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Thanks! Yes, MessageBodyReader it's solution for my problem. – Anton Tsivarev Nov 08 '12 at 16:55

Null params in method of web-service

2 Answers2