java - Jersey 只显示字母 ‘GET’

Question

我在项目中使用jersey来实现RESTful服务。输入网址后，我的浏览器仅显示字符“GET”。不知道哪里错了。

这是web.xml:

<servlet>
  <servlet-name>Jersey REST Service</servlet-name>
<servlet-class>
  com.sun.jersey.spi.container.servlet.ServletContainer
</servlet-class>
  <init-param>
    <param-name>com.sun.jersey.config.property.packages</param-name>
    <param-value>com.bcom.restful.server.sequence</param-value>
  </init-param>
  <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
  <servlet-name>Jersey REST Service</servlet-name>
  <url-pattern>/restfulService/*</url-pattern>
</servlet-mapping>  

这是资源类:

@Path("/tenant/{tId}/seqContinue/{sName}")
@Produces(MediaType.APPLICATION_JSON)
public class SequenceContinueService {

    private ISequenceGenerator sequenceGenerator;

    @GET
    public Sequence getSequenceContinue(@PathParam("tId") String tenantId,
            @PathParam("sName") String seqName) {

        if (!hasParams()) {

            try {
                Sequence seq = new Sequence();
                  seq.setSeqenceStr(Convert
                        .toString(sequenceGenerator.nextSequence(seqName))) ;
                  return seq;
            } catch (ApplicationException e) {
                ResponseBuilder builder = Response
                        .status(Status.INTERNAL_SERVER_ERROR);
                builder.type("application/json");
                builder.entity(e.getMessage());
                throw new WebApplicationException(builder.build());

            }

        }
        return null;
    }

}

浏览器仅在屏幕上显示字符“GET”。

Answer 1

如果你想要JSON support with Jersey 1.* ，您必须将此 init-param 添加到您的 servlet 配置中:

<init-param>
    <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
    <param-value>true</param-value>
</init-param>

您可能还需要扩展以下内容，才能让 Jersey 检测 JSON 提供程序类:

<init-param>
    <param-name>com.sun.jersey.config.property.packages</param-name>
    <param-value>com.bcom.restful.server.sequence;org.codehaus.jackson.jaxrs</param-value>
</init-param>

同一主题的其他 Material :

• Mkyong's Jersey + Jackson example
• Jersey 2.0 equivalent to POJOMappingFeature