Spring Boot：＆＃34;范围＆＃39;请求＆＃39;对于当前线程没有活动＆＃34;在Asynch方法中

时间：2016-09-05 06:33:26

标签： java spring spring-mvc spring-boot

我在Spring Boot控制器中有下一个简单的请求方法：

@Autowired
    private BillServ billServ;
...

@RequestMapping("/chrgcheck")
public String chrgCheck() {
  Future<Result> fut = null;
  fut = billServ.useCheck();

 while (!fut.isDone()) {
       try {
    Thread.sleep(100);
  } catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
  } 
   }
 try {
    if (fut.get().err ==0) {
      return "OK";
    } else {
      return "ERROR";
    }
  } catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
    return "ERROR";
  } catch (ExecutionException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
    return "ERROR";
}

}

它调用服务bean的asynch方法billServ.useCheck（）; 

  @Service
  @Scope(value="request", proxyMode=ScopedProxyMode.TARGET_CLASS)
  public class BillServ {
  ...
    @Async
    public Future<Result> useCheck() {
        Result res = new Result();

        System.out.println("Try-1");

        check.checkMe(1);

        res.err=0;
        return new AsyncResult<Result>(res);
    }

调用请求范围的bean check.checkMe（）的另一种方法，因为我需要根据请求使用单个bean：

@Component
  @Scope(value="request", proxyMode=ScopedProxyMode.TARGET_CLASS)
  public class Check {

    public void checkMe(int i) {
      System.out.println("checkMe:"+i);

    }
  }

所以，当我调用request＆＃34; / chrgcheck＆＃34;时，我会收到下一个错误：

  java.util.concurrent.ExecutionException: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scopedTarget.check': Scope 'request' 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/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.
    at java.util.concurrent.FutureTask.report(FutureTask.java:122)
    at java.util.concurrent.FutureTask.get(FutureTask.java:192)
    at com.ric.web.BillingController.chrgCheck(BillingController.java:99)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:114)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

为什么会这样？我应该在我的项目中纠正什么？

2 个答案:

答案 0 :(得分：5)

Springs请求范围实现是线程绑定的。因此，如果您启动一个新线程（这是@Async所做的），那么此线程不会绑定到请求，因此spring请求范围实现失败。

答案 1 :(得分：-1)

您只需要在bean中定义除了prototype之外需要与默认单例范围不同的范围。例如：

<div class="calendar">
  <div class="controls">July 2017</div>
  <div class="dayHeader">Sunday</div>
  <div class="dayHeader">Monday</div>
  <div class="dayHeader">Tuesday</div>
  <div class="dayHeader">Wednesday</div>
  <div class="dayHeader">Thursday</div>
  <div class="dayHeader">Friday</div>
  <div class="dayHeader">Saturday</div>
  <div class="day">
    <div class="header">25</div>
    <div class="content">
      this is a lot of content that I want to have scroll instead of just stretching the grid row and forcing the other rows to be smaller to compensate for this one's increased size due
    </div>
  </div>
  <div class="day">
    <div class="header">26</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">27</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">28</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">29</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">30</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">1</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">2</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">3</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">4</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">5</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">6</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">7</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">8</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">9</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">10</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">11</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">12</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">13</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">14</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">15</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">16</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">17</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">18</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">19</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">20</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">21</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">22</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">23</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">24</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">25</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">26</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">27</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">28</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">29</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">30</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">31</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">1</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">2</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">3</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">4</div>
    <div class="content"></div>
  </div>
  <div class="day">
    <div class="header">5</div>
    <div class="content"></div>
  </div>
</div>
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