Java 使用JAX-RS处理异步http请求？_Java_Multithreading_Http_Asynchronous_Jax Rs

Java 使用JAX-RS处理异步http请求？

java multithreading http asynchronous

Java 使用JAX-RS处理异步http请求？,java,multithreading,http,asynchronous,jax-rs,Java,Multithreading,Http,Asynchronous,Jax Rs,我正在使用JAX-RS为一个资源实现CRUD操作。在我的第一个用例中，它是一个阻塞（同步）请求，即在单线程执行中，客户机返回响应用例1: @Path("/resourceService") public class CRUDService { @GET @Path("/{param}") public Response getResource(@PathParam("param") String id) { Resource res = SomeBe

我正在使用JAX-RS为一个资源实现CRUD操作。在我的第一个用例中，它是一个阻塞（同步）请求，即在单线程执行中，客户机返回响应

用例1:

@Path("/resourceService")
public class CRUDService {

    @GET
    @Path("/{param}")
    public Response getResource(@PathParam("param") String id) {

        Resource res = SomeBean().getResource(id);
        return Response.status(200).entity(res).build();

    }

}

用例2:

@Path("/resourceService")
public class CRUDService {

    @GET
    @Path("/{param}")
    public Response getResource(@PathParam("param") String id) {

        Resource res = SomeBean().getResource(id);
        return Response.status(200).entity(res).build();

    }

}

现在，我必须实现相同的请求，但它是一个非阻塞（异步）请求，因此，一旦请求到达服务器，我就必须向服务器返回一个响应，作为确认，即

响应

对象，并接受

（202）

状态代码，然后恢复初始请求处理（在本例中，通过id获取资源）

通过发送一个新的

POST

请求（其内容是检索到的资源），将此请求（检索到的资源）的响应发送给客户端，然后客户端将返回此

POST

请求的响应，并返回成功状态码。（注意：这里的客户机不是bean浏览器，客户机和服务器都是被调用的RESTAPI中的机器）

我阅读了关于

异步JAX-RS

和

java.util.concurrent

包的内容

如果我像启动一个新线程那样异步执行请求处理，那么如何将ACK的第一次响应发送回。例：

@POST @Consumes("application/json") @Produces("application/json") public void getResource(@PathParam("param") String id, final @Suspended AsyncResponse response) { new Thread() { public void run() { Resource res = SomeBean().getResource(id); response.resume(resource); } }.start(); } }
如何使用JAX-RS实现此调用流
编辑： 我尝试了你的回答中提到的方法，但是我得到了一个例外：
服务器日志：

2016 - 07 - 25 12: 22: 01, 521 ERROR[io.undertow.request]( default task - 1) UT005023: Exception handling request to / resourceService: org.jboss.resteasy.spi.UnhandledException: java.lang.NoSuchMethodError: my.ow.dummy.package.CRUDService$1. < init > (Lmy / own / dummy / package / CRUDService;) V at org.jboss.resteasy.core.ExceptionHandler.handleApplicationException(ExceptionHandler.java: 76)[resteasy - jaxrs - 3.0 .6.Final.jar: ] at org.jboss.resteasy.core.ExceptionHandler.handleException(ExceptionHandler.java: 212)[resteasy - jaxrs - 3.0 .6.Final.jar: ] at org.jboss.resteasy.core.SynchronousDispatcher.writeException(SynchronousDispatcher.java: 149)[resteasy - jaxrs - 3.0 .6.Final.jar: ] at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java: 372)[resteasy - jaxrs - 3.0 .6.Final.jar: ] at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java: 179)[resteasy - jaxrs - 3.0 .6.Final.jar: ] at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java: 220)[resteasy - jaxrs - 3.0 .6.Final.jar: ] at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java: 56)[resteasy - jaxrs - 3.0 .6.Final.jar: ] at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java: 51)[resteasy - jaxrs - 3.0 .6.Final.jar: ] at javax.servlet.http.HttpServlet.service(HttpServlet.java: 790)[jboss - servlet - api_3 .1 _spec - 1.0 .0.Final.jar: 1.0 .0.Final] at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java: 85)[undertow - servlet - 1.0 .0.Final.jar: 1.0 .0.Final] at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java: 61)[undertow - servlet - 1.0 .0.Final.jar: 1.0 .0.Final] at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java: 36)[undertow - servlet - 1.0 .0.Final.jar: 1.0 .0.Final] at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java: 78) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java: 25)[undertow - core - 1.0 .0.Final.jar: 1.0 .0.Final] at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java: 113)[undertow - servlet - 1.0 .0.Final.jar: 1.0 .0.Final] at io.undertow.security.handlers.AuthenticationCallHandler.handleRequest(AuthenticationCallHandler.java: 52)[undertow - core - 1.0 .0.Final.jar: 1.0 .0.Final] at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java: 45)[undertow - core - 1.0 .0.Final.jar: 1.0 .0.Final] at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java: 61)[undertow - servlet - 1.0 .0.Final.jar: 1.0 .0.Final] at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java: 70)[undertow - servlet - 1.0 .0.Final.jar: 1.0 .0.Final] at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java: 76)[undertow - core - 1.0 .0.Final.jar: 1.0 .0.Final] at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java: 25)[undertow - core - 1.0 .0.Final.jar: 1.0 .0.Final] at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java: 61) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java: 25)[undertow - core - 1.0 .0.Final.jar: 1.0 .0.Final] at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java: 25)[undertow - core - 1.0 .0.Final.jar: 1.0 .0.Final] at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java: 240)[undertow - servlet - 1.0 .0.Final.jar: 1.0 .0.Final] at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java: 227)[undertow - servlet - 1.0 .0.Final.jar: 1.0 .0.Final] at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java: 73)[undertow - servlet - 1.0 .0.Final.jar: 1.0 .0.Final] at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java: 146)[undertow - servlet - 1.0 .0.Final.jar: 1.0 .0.Final] at io.undertow.server.Connectors.executeRootHandler(Connectors.java: 168)[undertow - core - 1.0 .0.Final.jar: 1.0 .0.Final] at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java: 687)[undertow - core - 1.0 .0.Final.jar: 1.0 .0.Final] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java: 1145)[rt.jar: 1.7 .0 _40] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java: 615)[rt.jar: 1.7 .0 _40] at java.lang.Thread.run(Thread.java: 724)[rt.jar: 1.7 .0 _40] Caused by: java.lang.NoSuchMethodError: my.ow.dummy.package.CRUDService$1. < init > (Lmy / own / dummy / package / CRUDService;) V at my.ow.dummy.package.CRUDService.handlePutRequest(CRUDService.java: 78)[classes: ] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[rt.jar: 1.7 .0 _40] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java: 57)[rt.jar: 1.7 .0 _40] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 43)[rt.jar: 1.7 .0 _40] at java.lang.reflect.Method.invoke(Method.java: 606)[rt.jar: 1.7 .0 _40] at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java: 137)[resteasy - jaxrs - 3.0 .6.Final.jar: ] at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java: 280)[resteasy - jaxrs - 3.0 .6.Final.jar: ] at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java: 234)[resteasy - jaxrs - 3.0 .6.Final.jar: ] at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java: 221)[resteasy - jaxrs - 3.0 .6.Final.jar: ] at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java: 356)[resteasy - jaxrs - 3.0 .6.Final.jar: ] ...29 more

2016-07-2512:22:01521错误[io.undertow.request]( 默认任务-1）UT005023:org.jboss.resteasy.spi.UnhandledException:java.lang.NoSuchMethodError:my.ow.dummy.package.CRUDService$1的异常处理请求初始化>（Lmy/own/dummy/package/CRUDService；）V 位于org.jboss.resteasy.core.ExceptionHandler.handleApplicationException（ExceptionHandler.java:76）[resteasy-jaxrs-3.0.6.Final.jar:] 位于org.jboss.resteasy.core.ExceptionHandler.handleException（ExceptionHandler.java:212）[resteasy-jaxrs-3.0.6.Final.jar:] 位于org.jboss.resteasy.core.SynchronousDispatcher.writeException（SynchronousDispatcher.java:149）[resteasy-jaxrs-3.0.6.Final.jar:] 在org.jboss.resteasy.core.SynchronousDispatcher.invoke（SynchronousDispatcher.java:372）[resteasy-jaxrs-3.0.6.Final.jar:] 位于org.jboss.resteasy.core.SynchronousDispatcher.invoke（SynchronousDispatcher.java:179）[resteasy-jaxrs-3.0.6.Final.jar:] 在org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service（ServletContainerDispatcher.java:220）[resteasy-jaxrs-3.0.6.Final.jar:] 位于org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service（HttpServletDispatcher.java:56）[resteasy-jaxrs-3.0.6.Final.jar:] 位于org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service（HttpServletDispatcher.java:51）[resteasy-jaxrs-3.0.6.Final.jar:] 在javax.servlet.http.HttpServlet.service（HttpServlet.java:790）[jboss-servlet-api_3.1\u spec-1.0.0.Final.jar:1.0.0.Final] 在io.undertow.servlet.handlers.ServletHandler.HandlerRequest（ServletHandler.java:85）[undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 位于io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.HandlerRequest（ServletSecurityRoleHandler.java:61）[undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 位于io.undertow.servlet.handlers.ServletDispatchingHandler.HandlerRequest（ServletDispatchingHandler.java:36）[undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 位于org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.HandlerRequest（SecurityContextAssociationHandler.java:78）在io.undertow.server.handlers.PredicateHandler.handleRequest（PredicateHandler.java:25）[undertow-core-1.0.0.Final.jar:1.0.0.Final] 位于io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest（SSLInformationAssociationHandler.java:113）[undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 在io.undertow.security.handlers.AuthenticationCallHandler.HandlerRequest（AuthenticationCallHandler.java:52）[undertow-core-1.0.0.Final.jar:1.0.0.Final] 位于io.undertow.security.handlers.AbstractSecretentityHandler.HandlerRequest（AbstractSecretentityHandler.java:45）[undertow-core-1.0.0.Final.jar:1.0.0.Final] 位于io.undertow.servlet.handlers.security.ServletSecretentityConstraintHandler.HandlerRequest（ServletSecretentityConstraintHandler.java:61）[undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 位于io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.HandlerRequest（CachedAuthenticatedSessionHandler.java:70）[undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 在io.undertow.security.handlers.SecurityInitialHandler.HandlerRequest（SecurityInitialHandler.java:76）[undertow-core-1.0.0.Final.jar:1.0.0.Final] 在io.undertow.server.handlers.PredicateHandler.handleRequest（PredicateHandler.java:25）[undertow-core-1.0.0.Final.jar:1.0.0.Final] 位于org.wildfly.extension.undertow.security.jacc.jaccontextidhandler.handleRequest（jaccontextidhandler.java:61）在io.undertow.server.handlers.PredicateHandler.handleRequest（PredicateHandler.java:25）[undertow-core-1.0.0.Final.jar:1.0.0.Final] 在io.undertow.server.handlers.PredicateHandler.handleRequest（PredicateHandler.java:25）[undertow-core-1.0.0.Final.jar:1.0.0.Final] 位于io.undertow.servlet.handlers.ServletiInitialHandler.handleFirstRequest（ServletialHandler.java:240）[undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 在io.undertow.servlet.handlers.ServletiInitialHandler.dispatchRequest（ServletiInitialHandler.java:227）[undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 在io.undertow.servlet.handlers.ServletiInitialHandler.access$000（servletiInitialHandler.java:73）[undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 在io.undertow.servlet.handlers.ServletInitialHandler$1.HandlerRequest（ServletInitialHandler。 public static void main(String args[]) { Runnable thread = () -> { // you code goes here // which you want to execute in a new thread }; // return response code / ACK } @GET @Path("/{param}") public Response getResource(@PathParam("param") String id, @HeaderParam( "SendBackUri") String uri) { new Thread() { public void run() { Resource res = SomeBean().getResource(id); ClientBuilder.newClient().target(uri).request().buildPost(Entity.entity(res, MediaType.WILDCARD_TYPE)).invoke(); } }.start(); return Response.status(202).build(); } @GET @Path("/{param}") public Response getResource(@PathParam("param") String id, @HeaderParam( "SendBackUri") String uri) { executorService.execute(new Runnable() { public void run() { Resource res = SomeBean().getResource(id); Response response = ClientBuilder.newClient().target(uri).request().buildPost(Entity.entity(res, MediaType.WILDCARD_TYPE)).invoke(); //deal with response } }); return Response.status(202).build(); } Future<Response> f = ClientBuilder.newClient().target(uri).request().async().get(); //do some client specific stuff which you probably do when receive 202; Response r = f.get(); //wait for response //do whatever you would do with the resource public void getResource(@PathParam("param") String id, final @Suspended AsyncResponse response)