Spring Cloud Feign记录错误日志

旧城等待， 2023-10-17 21:51 53阅读 0赞

1.pom.xml

<dependency>
    	<groupId>org.springframework.cloud</groupId>
    	<artifactId>spring-cloud-starter-feign</artifactId>
    </dependency>

2.配置文件

#开启feign
    feign.hystrix.enabled=true
    #断路器，断路器跳闸后等待多长时间重试
    hystrix.command.default.circuitBreaker.sleepWindowInMilliseconds=1000
    #断路器，请求发出后多长时间超时
    hystrix.command.default.execution.isolation.thread.timeoutInMilliseconds=5000

3.启动类加上注解@EnableFeignClients

@EnableDiscoveryClient
    @SpringBootApplication
    @EnableFeignClients
    public class EurekaHystrixApplication {
    
    	 public static void main(String[] args) {
    	        new SpringApplicationBuilder(
    	        		EurekaHystrixApplication.class)
    	            .web(true).run(args);
    	 }
    }

4.Service类

说明fallback与fallbackFactory区别，fallback只是出错运行你指定的方法，拿不到错误信息，fallbackFactory可以拿到错误信息

@FeignClient(name="eureka-hystrix",fallbackFactory=HelloFallbackFactory.class)
    public interface HelloService {
    
    	@RequestMapping(value="/test",method=RequestMethod.GET)  
        String hiService(@RequestParam("name") String name); 
    	
    	@RequestMapping(value="/test1",method=RequestMethod.GET)  
        String hiService1(@RequestParam("name") String name); 
    }

5.接口

public interface HelloFallback extends HelloService{
    
    }

6.HelloFallbackFactory，注意添加注解@Component

@Component
    public class HelloFallbackFactory implements FallbackFactory<HelloService>{
    
    	@Override
    	public HelloService create(Throwable e) {
    		System.out.println("错误信息："+e.getMessage());
    		return new HelloFallback() {
    			
    			@Override
    			public String hiService(String name) {
    				return "error";
    			}
    
    			@Override
    			public String hiService1(String name) {
    				return "error1";
    			}
    		};
    	}
    
    }