srpingcloud 服务调用Feign方式常见错误解决

报错信息：
1）
Consider revisiting the conditions above or defining a bean of type 'org.springframework.cloud.netflix.feign.FeignContext' in your configuration.
解决方法：
参考链接：https://cloud.spring.io/spring-cloud-netflix/multi/multi_spring-cloud-feign.html

在@Configuration类中添加一下代码：

 
@Bean
   public Feign.Builder feignBuilder() {
       return Feign.builder();
   }
    @Bean
    Logger.Level feignLoggerLevel() {
        return Logger.Level.FULL;
    }
添加依赖：
<dependency>
			<groupId>io.github.openfeign</groupId>
			<artifactId>feign-core</artifactId>
			<version>RELEASE</version>
		</dependency>

2）
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.honghu.cloud.modules.remote.HelloRemote': FactoryBean threw exception on object creation; nested exception is java.lang.NoClassDefFoundError: feign/slf4j/Slf4jLogger
解决方法：添加依赖jar包

<dependency>
			<groupId>com.netflix.feign</groupId>
			<artifactId>feign-slf4j</artifactId>
			<version>8.14.4</version>
		</dependency>

3）
Load balancer does not have available server for client
参考链接：https://stackoverflow.com/questions/41401009/load-balancer-does-not-have-available-server-for-client
解决方法：
eureka.client.fetchRegistry=true

4）
feign.RetryableException: Read timed out executing
参考链接：https://blog.csdn.net/luwei42768/article/details/79529224
解决方法：
ribbon: 
  ReadTimeout: 60000 
  ConnectTimeout: 60000


解决Feign第一次请求timeout问题
#索性禁用Feign的Hystrix
feign.hystrix.enabled=false