我正在使用Jersey和Sring Data MongoDB来构建Web服务，并且在服务中注入重复执行时我遇到了一些问题。
这是我的服务类：
@Path("/")
public class TaskService {
@Inject
CustomTaskRepository taskRepository;
@POST
@Consumes(MediaType.APPLICATION_FORM_URLENCODED)
@Path("/create-user")
public void createUser(@FormParam("email") String email,
@FormParam("phone") String phone) {
this.taskRepository.createUser(new User(email, phone));
}
}
这是我的Repository界面：
public interface CustomTaskRepository {
void createUser(User user);
}
这是我的存储库实现：
public class TaskRepositoryImpl implements CustomTaskRepository {
private final MongoOperations operations;
@Autowired
public TaskRepositoryImpl(MongoOperations operations) {
Assert.notNull(operations, "MongoOperations must not be null!");
this.operations = operations;
}
@Override
public void createUser(User user) {
operations.insert(user);
}
}
这是依赖性活页夹：
public class DependencyBinder extends AbstractBinder {
@Override
protected void configure() {
bind(TaskRepositoryImpl.class).to(CustomTaskRepository.class);
}
}
ResouceConfig：
public class TodoApplication extends ResourceConfig{
public TodoApplication () {
packages("org.mypackage");
register(new DependencyBinder());
}
}
当我在Tomcat上启动服务并向createUser发送Post请求时，我注意到taskRepository中的TaskService为空并且有以下三个例外：
javax.servlet.ServletException: A MultiException has 3 exceptions. They are:
1. org.glassfish.hk2.api.UnsatisfiedDependencyException: There was no object available for injection at SystemInjecteeImpl(requiredType=CustomTaskRepository,parent=TaskService,qualifiers={},position=-1,optional=false,self=false,unqualified=null,1528456797)
2. java.lang.IllegalArgumentException: While attempting to resolve the dependencies of org.m9i.services.TaskService errors were found
3. java.lang.IllegalStateException: Unable to perform operation: resolve on org.m9i.services.TaskService
org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:419)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:381)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:344)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:221)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
Root cause
A MultiException has 3 exceptions. They are:
1. org.glassfish.hk2.api.UnsatisfiedDependencyException: There was no object available for injection at SystemInjecteeImpl(requiredType=CustomTaskRepository,parent=TaskService,qualifiers={},position=-1,optional=false,self=false,unqualified=null,1528456797)
2. java.lang.IllegalArgumentException: While attempting to resolve the dependencies of org.m9i.services.TaskService errors were found
3. java.lang.IllegalStateException: Unable to perform operation: resolve on org.m9i.services.TaskService
org.jvnet.hk2.internal.Collector.throwIfErrors(Collector.java:88)
org.jvnet.hk2.internal.ClazzCreator.resolveAllDependencies(ClazzCreator.java:252)
org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:360)
org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:471)
org.glassfish.jersey.process.internal.RequestScope.findOrCreate(RequestScope.java:162)
org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2064)
org.jvnet.hk2.internal.ServiceLocatorImpl.internalGetService(ServiceLocatorImpl.java:711)
org.jvnet.hk2.internal.ServiceLocatorImpl.getService(ServiceLocatorImpl.java:653)
org.glassfish.jersey.internal.inject.Injections.getOrCreate(Injections.java:169)
org.glassfish.jersey.server.model.MethodHandler$ClassBasedMethodHandler.getInstance(MethodHandler.java:185)
org.glassfish.jersey.server.internal.routing.PushMethodHandlerRouter.apply(PushMethodHandlerRouter.java:74)
org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:109)
org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:112)
org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:112)
org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:112)
org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:112)
org.glassfish.jersey.server.internal.routing.RoutingStage.apply(RoutingStage.java:92)
org.glassfish.jersey.server.internal.routing.RoutingStage.apply(RoutingStage.java:61)
org.glassfish.jersey.process.internal.Stages.process(Stages.java:197)
org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:295)
org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
org.glassfish.jersey.internal.Errors.process(Errors.java:315)
org.glassfish.jersey.internal.Errors.process(Errors.java:297)
org.glassfish.jersey.internal.Errors.process(Errors.java:267)
org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:286)
org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1072)
org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:399)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:381)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:344)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:221)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
root cause
org.glassfish.hk2.api.UnsatisfiedDependencyException: There was no object available for injection at SystemInjecteeImpl(requiredType=CustomTaskRepository,parent=TaskService,qualifiers={},position=-1,optional=false,self=false,unqualified=null,1528456797)
org.jvnet.hk2.internal.ThreeThirtyResolver.resolve(ThreeThirtyResolver.java:74)
org.jvnet.hk2.internal.ClazzCreator.resolve(ClazzCreator.java:214)
org.jvnet.hk2.internal.ClazzCreator.resolveAllDependencies(ClazzCreator.java:237)
org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:360)
org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:471)
org.glassfish.jersey.process.internal.RequestScope.findOrCreate(RequestScope.java:162)
org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2064)
org.jvnet.hk2.internal.ServiceLocatorImpl.internalGetService(ServiceLocatorImpl.java:711)
org.jvnet.hk2.internal.ServiceLocatorImpl.getService(ServiceLocatorImpl.java:653)
org.glassfish.jersey.internal.inject.Injections.getOrCreate(Injections.java:169)
org.glassfish.jersey.server.model.MethodHandler$ClassBasedMethodHandler.getInstance(MethodHandler.java:185)
org.glassfish.jersey.server.internal.routing.PushMethodHandlerRouter.apply(PushMethodHandlerRouter.java:74)
org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:109)
org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:112)
org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:112)
org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:112)
org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:112)
org.glassfish.jersey.server.internal.routing.RoutingStage.apply(RoutingStage.java:92)
org.glassfish.jersey.server.internal.routing.RoutingStage.apply(RoutingStage.java:61)
org.glassfish.jersey.process.internal.Stages.process(Stages.java:197)
org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:295)
org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
org.glassfish.jersey.internal.Errors.process(Errors.java:315)
org.glassfish.jersey.internal.Errors.process(Errors.java:297)
org.glassfish.jersey.internal.Errors.process(Errors.java:267)
org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:286)
org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1072)
org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:399)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:381)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:344)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:221)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
我在哪里陷入困境？有更优雅的设计吗？