通达信程序化交易接口程序-spring cloud之Feign搭建遇见的几个问题记录

在spring新版本需要导入loadbalance依赖

报错信息：

Errorcreatingbeanwithname"orderService":Unsatisfieddependencyexpressedthroughfield"userClient";nestedexceptionisorg.springframework.beans.factory.BeanCreationException:Errorcreatingbeanwithname"cn.itcast.feign.client.UserClient":Unexpectedexceptionduringbeancreation;nestedexceptionisjava.lang.IllegalStateException:NoFeignClientforloadBalancingdefined.Didyouforgettoincludespring-cloud-starter-loadbalancer?

解决方法：在pom.xml里面加上该依赖

      <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-loadbalancer</artifactId>
            <version>3.1.1</version>
        </dependency>

负载均衡依赖冲突问题

Servlet.serviceforservlet[dispatcherServlet]incontextwithpath[]threwexception[Handlerdispatchfailed;nestedexceptionisjava.lang.AbstractMethodError:Receiverclassorg.springframework.cloud.netflix.ribbon.RibbonLoadBalancerClientdoesnotdefineorinheritanimplementationoftheresolvedmethodabstractchooseLorg/springframework/cloud/client/ServiceInstance;ofinterfaceorg.springframework.cloud.client.loadbalancer.ServiceInstanceChooser.]withrootcause

解决方法：排除RibbonLoadBalance依赖即可

        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

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