英文:
Getting error after adding Hystrix command
问题
添加了Hystrix命令后，出现以下错误 -
执行HystrixCommand.run()时出错。继续回退逻辑...：java.lang.IllegalStateException: 未找到绑定线程的请求：您是否在实际网络请求之外引用请求属性，或者在最初接收线程之外处理请求？如果您实际在网络请求内操作，仍然收到此消息，您的代码可能在DispatcherServlet之外运行：在这种情况下，使用RequestContextListener或RequestContextFilter来暴露当前请求。位于org.springframework.web.context.request.RequestContextHolder.currentRequestAttributes(RequestContextHolder.java:131)的代码处。
我的应用程序类如下 -
@SpringBootApplication
@EnableDistributedSession(regionName="DATASERVICES")
@EnableDiscoveryClient
@EnableCircuitBreaker
public class SampleApplication {
public static void main(String[] args) {
SpringApplication.run(SampleApplication.class, args);
}
}
我发现错误发生在尝试在Service类中获取会话的代码行。我实现了Hystrix的Service类如下 -
@Service
public class TransactionsUSStandardServiceImpl implements TransactionsUSStandardService {
@Autowired
private RestTemplate restTemplate;
@Autowired
HttpServletRequest request;
@Override
@HystrixCommand(commandKey = "getXyzCommand", threadPoolKey = "getXyzThreadPoolKey", fallbackMethod = "xyzFallback")
public List<String> getXyz(String arg1, HttpHeaders headers, String arg2) throws Exception {
HttpSession session = request.getSession(false);
...
...
}
public List<String> xyzFallback(String arg1, HttpHeaders headers, String arg2, Throwable t) throws Exception {
LOGGER.error(".......");
throw new XyzException("Hystrix CircuitBreaker Fallback while executing getXyz() method", t);
}
}
在SVN中，我们保留了以下配置 -
hystrix:
command:
defaultHystrixCommand:
execution:
isolation:
thread:
timeoutInMilliseconds: 30000
getXyzCommand:
execution:
isolation:
thread:
timeoutInMilliseconds: 30000
threadpool:
getXyzThreadPoolKey:
coreSize: 20
maximumSize: 20
maxQueueSize: 5
在我的Hystrix配置中是否有什么遗漏吗？
英文:
After adding the Hystrix command am getting the following error -
Error executing HystrixCommand.run(). Proceeding to fallback logic ...: 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) at
My application class looks like this -
@SpringBootApplication
@EnableDistributedSession(regionName="DATASERVICES")
@EnableDiscoveryClient
@EnableCircuitBreaker
public class SampleApplication {
public static void main(String[] args) {
SpringApplication.run(SampleApplication.class, args);
}
}
I have seen the error is happening at the line where we are trying to get the session in Service class. My service class where I have implemented the Hystrix looks like this -
@Service
public class TransactionsUSStandardServiceImpl implements TransactionsUSStandardService {
@Autowired
private RestTemplate restTemplate;
@Autowired
HttpServletRequest request;
@Override
@HystrixCommand(commandKey = "getXyzCommand", threadPoolKey = "getXyzThreadPoolKey", fallbackMethod = "xyzFallback")
public List<String> getXyz(String arg1, HttpHeaders headers, String arg2) throws Exception {
HttpSession session = request.getSession(false);
...
...
}
public List<String> xyzFallback(String arg1, HttpHeaders headers, String arg2, Throwable t) throws Exception {
LOGGER.error(".......");
throw new XyzException("Hystrix CircuitBreaker Fallback while executing getXyz() method", t);
}
}
In the SVN we kept our configuration as -
hystrix:
command:
defaultHystrixCommand:
execution:
isolation:
thread:
timeoutInMilliseconds: 30000
getXyzCommand:
execution:
isolation:
thread:
timeoutInMilliseconds: 30000
threadpool:
getXyzThreadPoolKey:
coreSize: 20
maximumSize: 20
maxQueueSize: 5
Am I missing anything in my Hystrix configuration?
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