java - Jersey2 中@Immediate 注解的使用

Question

我有一个与此处提出的问题类似的问题:How do I get my Jersey 2 Endpoints to eagerly initialize on startup?

但稍微往下走。我可以立即加载我的资源，但是当我尝试通过调用 REST url 使用它时，我得到以下堆栈跟踪。

java.lang.IllegalStateException: Could not find an active context for org.glassfish.hk2.api.Immediate
2. java.lang.IllegalStateException: While attempting to create a service for      
SystemDescriptor(
implementation=com.service.MyResource
contracts={com.service.MyResource}
scope=org.glassfish.hk2.api.Immediate
qualifiers={}
descriptorType=CLASS
descriptorVisibility=NORMAL
metadata=
rank=0
loader=null
proxiable=null
proxyForSameScope=null
analysisName=null
id=150
locatorId=0
identityHashCode=1249600275
reified=true) in scope org.glassfish.hk2.api.Immediate an error occured while   locating the context

我的 TResource 类是这样注释的:

@Immediate
@Path("/test/v1")
public class TResource {

我的基于 Grizzly 的服务器设置如下:

ResourceConfig rc = new ResourceConfig()
            .packages(true,
                    "com.mystuff"
              )        
            .property(ServerProperties.RESPONSE_SET_STATUS_OVER_SEND_ERROR, "true");

    HttpServer httpServer = GrizzlyHttpServerFactory.createHttpServer(URI.create(base_uri), rc);

    ApplicationHandler handler = new ApplicationHandler(rc);
    ServiceLocatorUtilities.enableImmediateScope(handler.getServiceLocator());

任何指导将不胜感激!干杯，菲尔

Answer 1

获取 ServiceLocator 句柄的一种方法是实现 Feature .

import javax.inject.Inject;
import javax.ws.rs.core.Feature;
import javax.ws.rs.core.FeatureContext;
import org.glassfish.hk2.api.ServiceLocator;
import org.glassfish.hk2.utilities.ServiceLocatorUtilities;

public class ImmediateFeature implements Feature {

    @Inject
    public ImmediateFeature(ServiceLocator locator) {
        ServiceLocatorUtilities.enableImmediateScope(locator);            
    }

    @Override
    public boolean configure(FeatureContext context) {
        return true;
    }  
}

然后只需注册功能

ResourceConfig rc = new ResourceConfig().packages("jersey.hk2.test");
rc.register(ImmediateFeature.class);

我已经测试过了，它工作正常