[英]How can I use a session or request-scoped bean in a component annotated bean?
在前一个问题中如何在 Spring Boot 中创建一个有效的 TCP Server 套接字以及如何处理传入的消息？ 我在 Spring 集成和处理 TCP 套接字连接方面遇到了一些问题。 该问题已解决，但不幸的是，出现了一个新问题......我从客户那里得到了我的消息 - 到目前为止一切顺利 - 但现在我尝试使用已经存在的业务逻辑来处理这样的消息：
这是一个处理传入套接字消息的类。 通过 spring 集成实现
import homebrew.something.MessageProcessor;
import lombok.extern.log4j.Log4j2;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.integration.annotation.MessageEndpoint;
import org.springframework.integration.annotation.ServiceActivator;
import org.springframework.stereotype.Component;
@Log4j2
@Component
@MessageEndpoint
public class ClientSocketHandler {
@Autowired
private MessageProcessor messageProcessor;
@ServiceActivator(inputChannel = "toTcp")
public byte[] handleMessage(byte[] msg) {
byte[] msgToSend = messageProcessor.processMessage(msg);
return msgToSend;
}
}
这是绑定到 HTTP 会话的常规传输对象类
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.context.annotation.Scope;
import org.springframework.context.annotation.ScopedProxyMode;
@Component
@Scope(value = "session", proxyMode = ScopedProxyMode.TARGET_CLASS)
public class ASimpleTransferObject {
// Some fields,
// some getters and
// some setters
}
在这里我们得到了我们的服务来处理来自 TCP 套接字的传入消息
import lombok.extern.log4j.Log4j2;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Log4j2
@Service
public class MessageProcessor {
@Autowired
private ASimpleTransferObject transferObject;
public byte[] processMessage(byte[] msg) {
// Do something with the message
return message;
}
}
如果我从客户端向服务器发送消息，则会抛出此异常：
ERROR org.springframework.integration.ip.tcp.connection.TcpNetConnection - Exception sending message: GenericMessage [payload=byte[0], headers={ip_tcp_remotePort=XXXX, ip_connectionId=view-localhost:XXXXX:YYYYY:AAAA-BBBB-CCCC, ip_localInetAddress=/127.0.0.1, ip_address=127.0.0.1, id=fd33bdd9-1af1-051f-3106-3f08af7bdd16, ip_hostname=view-localhost, timestamp=87236587436545}]
org.springframework.messaging.MessageHandlingException: error occurred during processing message in 'MethodInvokingMessageProcessor' [org.springframework.integration.handler.MethodInvokingMessageProcessor@1b067e83]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scopedTarget.transferObject': Scope 'session' is not active for the current thread; consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.
at org.springframework.integration.support.utils.IntegrationUtils.wrapInHandlingExceptionIfNecessary(IntegrationUtils.java:192) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.MethodInvokingMessageProcessor.processMessage(MethodInvokingMessageProcessor.java:111) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.ServiceActivatingHandler.handleRequestMessage(ServiceActivatingHandler.java:104) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:134) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:62) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:115) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:133) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:106) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:72) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:570) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:187) ~[spring-messaging-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.messaging.core.GenericMessagingTemplate.doSendAndReceive(GenericMessagingTemplate.java:233) ~[spring-messaging-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.messaging.core.GenericMessagingTemplate.doSendAndReceive(GenericMessagingTemplate.java:47) ~[spring-messaging-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.messaging.core.AbstractMessagingTemplate.sendAndReceive(AbstractMessagingTemplate.java:46) ~[spring-messaging-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.integration.core.MessagingTemplate.sendAndReceive(MessagingTemplate.java:97) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.gateway.MessagingGatewaySupport.doSendAndReceive(MessagingGatewaySupport.java:522) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.gateway.MessagingGatewaySupport.sendAndReceiveMessage(MessagingGatewaySupport.java:493) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.ip.tcp.TcpInboundGateway.doOnMessage(TcpInboundGateway.java:127) ~[spring-integration-ip-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.ip.tcp.TcpInboundGateway.onMessage(TcpInboundGateway.java:105) ~[spring-integration-ip-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.ip.tcp.connection.TcpNetConnection.run(TcpNetConnection.java:216) [spring-integration-ip-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]
at java.lang.Thread.run(Thread.java:834) [?:?]
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scopedTarget.transferObject': Scope 'session' is not active for the current thread; consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:368) ~[spring-beans-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.aop.target.SimpleBeanTargetSource.getTarget(SimpleBeanTargetSource.java:35) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:675) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at homebrew.something.ASimpleTransferObject$$EnhancerBySpringCGLIB$$45c84ec3.getSessionKey(<generated>) ~[classes/:?]
....
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:771) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.interceptor.CustomizableTraceInterceptor.invokeUnderTrace(CustomizableTraceInterceptor.java:256) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.interceptor.AbstractTraceInterceptor.invoke(AbstractTraceInterceptor.java:131) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:175) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:95) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:691) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?]
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
at org.springframework.expression.spel.support.ReflectiveMethodExecutor.execute(ReflectiveMethodExecutor.java:129) ~[spring-expression-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.expression.spel.ast.MethodReference.getValueInternal(MethodReference.java:112) ~[spring-expression-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.expression.spel.ast.MethodReference.access$000(MethodReference.java:55) ~[spring-expression-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.expression.spel.ast.MethodReference$MethodValueRef.getValue(MethodReference.java:386) ~[spring-expression-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:92) ~[spring-expression-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.expression.spel.ast.SpelNodeImpl.getTypedValue(SpelNodeImpl.java:117) ~[spring-expression-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:375) ~[spring-expression-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.integration.util.AbstractExpressionEvaluator.evaluateExpression(AbstractExpressionEvaluator.java:171) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.util.AbstractExpressionEvaluator.evaluateExpression(AbstractExpressionEvaluator.java:156) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.support.MessagingMethodInvokerHelper.invokeExpression(MessagingMethodInvokerHelper.java:637) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.support.MessagingMethodInvokerHelper.fallbackToInvokeExpression(MessagingMethodInvokerHelper.java:630) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.support.MessagingMethodInvokerHelper.processInvokeExceptionAndFallbackToExpressionIfAny(MessagingMethodInvokerHelper.java:614) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.support.MessagingMethodInvokerHelper.invokeHandlerMethod(MessagingMethodInvokerHelper.java:585) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.support.MessagingMethodInvokerHelper.processInternal(MessagingMethodInvokerHelper.java:477) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.support.MessagingMethodInvokerHelper.process(MessagingMethodInvokerHelper.java:355) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.MethodInvokingMessageProcessor.processMessage(MethodInvokingMessageProcessor.java:108) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
... 21 more
Caused by: java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.
at org.springframework.web.context.request.RequestContextHolder.currentRequestAttributes(RequestContextHolder.java:131) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.context.request.SessionScope.get(SessionScope.java:55) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:356) ~[spring-beans-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.aop.target.SimpleBeanTargetSource.getTarget(SimpleBeanTargetSource.java:35) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:675) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at homebrew.something.ASimpleTransferObject$$EnhancerBySpringCGLIB$$45c84ec3.getSessionKey(<generated>) ~[classes/:?]
....
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:771) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.interceptor.CustomizableTraceInterceptor.invokeUnderTrace(CustomizableTraceInterceptor.java:256) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.interceptor.AbstractTraceInterceptor.invoke(AbstractTraceInterceptor.java:131) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:175) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:95) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:691) ~[spring-aop-5.2.8.RELEASE.jar:5.2.8.RELEASE]
....
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?]
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
at org.springframework.expression.spel.support.ReflectiveMethodExecutor.execute(ReflectiveMethodExecutor.java:129) ~[spring-expression-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.expression.spel.ast.MethodReference.getValueInternal(MethodReference.java:112) ~[spring-expression-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.expression.spel.ast.MethodReference.access$000(MethodReference.java:55) ~[spring-expression-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.expression.spel.ast.MethodReference$MethodValueRef.getValue(MethodReference.java:386) ~[spring-expression-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:92) ~[spring-expression-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.expression.spel.ast.SpelNodeImpl.getTypedValue(SpelNodeImpl.java:117) ~[spring-expression-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:375) ~[spring-expression-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.integration.util.AbstractExpressionEvaluator.evaluateExpression(AbstractExpressionEvaluator.java:171) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.util.AbstractExpressionEvaluator.evaluateExpression(AbstractExpressionEvaluator.java:156) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.support.MessagingMethodInvokerHelper.invokeExpression(MessagingMethodInvokerHelper.java:637) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.support.MessagingMethodInvokerHelper.fallbackToInvokeExpression(MessagingMethodInvokerHelper.java:630) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.support.MessagingMethodInvokerHelper.processInvokeExceptionAndFallbackToExpressionIfAny(MessagingMethodInvokerHelper.java:614) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.support.MessagingMethodInvokerHelper.invokeHandlerMethod(MessagingMethodInvokerHelper.java:585) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.support.MessagingMethodInvokerHelper.processInternal(MessagingMethodInvokerHelper.java:477) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.support.MessagingMethodInvokerHelper.process(MessagingMethodInvokerHelper.java:355) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
at org.springframework.integration.handler.MethodInvokingMessageProcessor.processMessage(MethodInvokingMessageProcessor.java:108) ~[spring-integration-core-5.3.2.RELEASE.jar:5.3.2.RELEASE]
... 21 more
我已经尝试将 RequestContextListener 放入我的 spring 配置中
@Bean
public RequestContextListener requestContextListener() {
return new RequestContextListener();
}
但这并没有真正的帮助。 再次抛出相同的异常。
这个问题有解决方案吗？
非常感谢！
这是绝对不可能的，因为 TCP 连接与 HTTP 连接完全无关。 当我们处理从 HTTP 客户端发起的 HTTP 连接以及在我们的 HTTP 服务器中有会话管理（例如 Srvlet 容器）时，我们就有了会话上下文。
TCP 连接以完全不同的方式启动，并且没有钩子从管理器获取 HTTP 会话，因为没有与该会话绑定的 HTTP 请求。
您可能需要了解有关 HTTP 及其会话状态的更多信息...
TCP连接的要点是在一个对HTTP一无所知的线程中完成的，只有当我们与HTTP线程和请求中的一些客户端会话令牌进行交互时，我们才能初始化会话范围。
我不确定如何帮助您，但是您正在寻找的东西是不可能的，并且您不能在 HTTP 请求之外使用该会话范围。 您需要重新考虑您的业务逻辑，使其符合您的 TCP 请求。
Spring：如何将HttpServletRequest注入请求范围的bean？
[英]Spring: how do I inject an HttpServletRequest into a request-scoped bean?
我可以使用会话范围的bean代替httpsession来维护会话吗
[英]Can i use session scoped bean instead of httpsession for maintaining sessions
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