5.4. JAX-RS 和 RESTEasy 应用更改

org.jboss.resteasy.core.NoMessageBodyWriterFoundFailure: Could not find MessageBodyWriter for response object of type: <OBJECT> of media type:

org.jboss.resteasy.core.NoMessageBodyWriterFoundFailure: Could not find MessageBodyWriter for response object of type: <OBJECT> of media type:

@Path("dates")
public class DateService {

    @GET
    @Path("daysuntil/{targetdate}")
    public long showDaysUntil(@PathParam("targetdate") String targetDate) {
        DateLogger.LOGGER.logDaysUntilRequest(targetDate);
        final long days;

        try {
            final LocalDate date = LocalDate.parse(targetDate, DateTimeFormatter.ISO_DATE);
            days = ChronoUnit.DAYS.between(LocalDate.now(), date);
        } catch (DateTimeParseException ex) {
          // ** DISCLAIMER **. This example is contrived.
          throw new WebApplicationException(Response.status(400).entity(ex.getLocalizedMessage()).type(MediaType.TEXT_PLAIN)
              .build());
        }
        return days;
    }
}

@Path("dates")
public class DateService {

    @GET
    @Path("daysuntil/{targetdate}")
    public long showDaysUntil(@PathParam("targetdate") String targetDate) {
        DateLogger.LOGGER.logDaysUntilRequest(targetDate);
        final long days;

        try {
            final LocalDate date = LocalDate.parse(targetDate, DateTimeFormatter.ISO_DATE);
            days = ChronoUnit.DAYS.between(LocalDate.now(), date);
        } catch (DateTimeParseException ex) {
          // ** DISCLAIMER **. This example is contrived.
          throw new WebApplicationException(Response.status(400).entity(ex.getLocalizedMessage()).type(MediaType.TEXT_PLAIN)
              .build());
        }
        return days;
    }
}

...
import javax.ws.rs.Produces;
...

@Path("dates")
public class DateService {

    @GET
    @Path("daysuntil/{targetdate}")
    @Produces(MediaType.TEXT_PLAIN)
    public long showDaysUntil(@PathParam("targetdate") String targetDate) {
        DateLogger.LOGGER.logDaysUntilRequest(targetDate);
        final long days;

        try {
            final LocalDate date = LocalDate.parse(targetDate, DateTimeFormatter.ISO_DATE);
            days = ChronoUnit.DAYS.between(LocalDate.now(), date);
        } catch (DateTimeParseException ex) {
          // ** DISCLAIMER **. This example is contrived.
          throw new WebApplicationException(Response.status(400).entity(ex.getLocalizedMessage()).type(MediaType.TEXT_PLAIN)
              .build());
        }
        return days;
    }
}

...
import javax.ws.rs.Produces;
...

@Path("dates")
public class DateService {

    @GET
    @Path("daysuntil/{targetdate}")
    @Produces(MediaType.TEXT_PLAIN)
    public long showDaysUntil(@PathParam("targetdate") String targetDate) {
        DateLogger.LOGGER.logDaysUntilRequest(targetDate);
        final long days;

        try {
            final LocalDate date = LocalDate.parse(targetDate, DateTimeFormatter.ISO_DATE);
            days = ChronoUnit.DAYS.between(LocalDate.now(), date);
        } catch (DateTimeParseException ex) {
          // ** DISCLAIMER **. This example is contrived.
          throw new WebApplicationException(Response.status(400).entity(ex.getLocalizedMessage()).type(MediaType.TEXT_PLAIN)
              .build());
        }
        return days;
    }
}

ClientRequest request = new ClientRequest(generateURL("/linkheader/str"));
request.addLink("previous chapter", "previous", "http://example.com/TheBook/chapter2", null);
ClientResponse response = request.post();
LinkHeader header = response.getLinkHeader();

ClientRequest request = new ClientRequest(generateURL("/linkheader/str"));
request.addLink("previous chapter", "previous", "http://example.com/TheBook/chapter2", null);
ClientResponse response = request.post();
LinkHeader header = response.getLinkHeader();

ResteasyClient client = new ResteasyClientBuilder().build();
Response response = client.target(generateURL("/linkheader/str")).request()
    .header("Link", "<http://example.com/TheBook/chapter2>; rel=\"previous\";
title=\"previous chapter\"").post(Entity.text(new String()));
javax.ws.rs.core.Link link = response.getLink("previous");

ResteasyClient client = new ResteasyClientBuilder().build();
Response response = client.target(generateURL("/linkheader/str")).request()
    .header("Link", "<http://example.com/TheBook/chapter2>; rel=\"previous\";
title=\"previous chapter\"").post(Entity.text(new String()));
javax.ws.rs.core.Link link = response.getLink("previous");