我正在尝试使用hyst,但是当调用save方法时,会使用resttemplate发布一个帖子,但会出现以下异常:
com.netflix.hystrix.contrib.javanica.exception.FallbackDefinitionException:找不到回退方法:breaker([class com.wnb.mastercard.domain.enroll.EnrollCommand])
有人可以帮助我吗?
@Component
public class EnrollRepositoryRest {
@Autowired
private RestTemplate template;
@Value("${beblue-card-enroll.url}")
private String url;
public Enroll getEnrollByCardId(String cardId) {
Enroll[] enroll = template.getForObject(url + "cardEnroll/enroll/" + cardId, Enroll[].class);
return enroll[0];
}
@HystrixCommand(fallbackMethod = "breaker")
public void save(EnrollCommand command) {
template.postForObject(url + "/cardEnroll/enroll", command, EnrollCommand.class);
}
public String breaker() {
System.out.println("HYSTRIX EXECUTADO");
return "Hystrix is Ok";
}
}
答案 0 :(得分:10)
我认为这个例外很清楚地告诉你这个问题。方法:
public String breaker(EnrollCommand command) {
System.out.println("HYSTRIX EXECUTADO");
return "Hystrix is Ok";
}
不存在。 (注意签名中的参数)
使用该批注定义回退方法时,回退方法必须与您定义Hystrix命令的方法的相同参数匹配。
答案 1 :(得分:0)
@Ramon Rius
即使返回类型必须与'save'方法相同,在这种情况下它也是无效的。
如果没有,我会收到此错误。
ERROR 10340 --- [nio-8060-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] :
Servlet.service() for servlet [dispatcherServlet] in context with path []
threw exception [Request processing failed; nested exception is
com.netflix.hystrix.contrib.javanica.exception.FallbackDefinitionException:
Incompatible return types.
Command method: public long com.brownfield.pss.book.component.BookingComponent.book(com.brownfield.pss.book.entity.BookingRecord,java.lang.String);
Fallback method: public java.lang.String com.brownfield.pss.book.component.BookingComponent.fallByMethod(com.brownfield.pss.book.entity.BookingRecord,java.lang.String);
Hint: Fallback method 'public java.lang.String com.brownfield.pss.book.component.BookingComponent.fallByMethod(com.brownfield.pss.book.entity.BookingRecord,java.lang.String)' must return: long or its subclass] with root cause
Thing是fallbackMethod的参数和返回类型,main方法应该相同。 fallbackMethod可能有一个类型为Throwable
的额外参数答案 2 :(得分:0)
回退方法必须与原始方法具有相同的定义。
private void breaker(EnrollCommand command) {
System.out.println("HYSTRIX EXECUTADO");
}