SpringCloud 报错Cannot execute req


上节自己学习了SpringCloud中的服务治理包含注册中心，服务提供，这次记录一下常见的错误：

Spring Cloud Eureka配置安全验证时Client注册报错

2019-06-24 18:43:21.800  WARN 5628 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_YYC-TEST/LAPTOP-HUEO3FR1:yyc-test:8800 - registration failed Cannot execute request on any known server

com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server
    at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) ~[eureka-client-1.9.8.jar:1.9.8]
    at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.9.8.jar:1.9.8]
    at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) ~[eureka-client-1.9.8.jar:1.9.8]
    at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.9.8.jar:1.9.8]
    at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.9.8.jar:1.9.8]
    at com.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:829) ~[eureka-client-1.9.8.jar:1.9.8]
    at com.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:121) [eureka-client-1.9.8.jar:1.9.8]
    at com.netflix.discovery.InstanceInfoReplicator$1.run(InstanceInfoReplicator.java:101) [eureka-client-1.9.8.jar:1.9.8]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_162]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_162]
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_162]
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [na:1.8.0_162]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_162]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_162]
    at java.lang.Thread.run(Thread.java:748) [na:1.8.0_162]

2019-06-24 18:43:21.803  WARN 5628 --- [nfoReplicator-0] c.n.discovery.InstanceInfoReplicator     : There was a problem with the instance info replicator

今天配置好SpringCloudEureka并加上安全验证时，发现客户端连接不上服务器，就在网上找答案：

image image image

实际上此问题应注意以下几点：

1：由于eureka的版本过高，并且在pom文件引入了security，然后eureka高版本默认开启csrf保护，因此我们需要在eureka服务端关闭csrf校验。

image

package com.zhaixingzu.yyc.registry.security;

import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;


/**
 * @author Herbert
 * @date 2019/06/24
 */
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    @Override
    protected void configure(HttpSecurity http) {
        try {
            http.csrf().disable()
                .authorizeRequests()
                .antMatchers("/actuator/**").permitAll()
                .anyRequest()
                .authenticated().and().httpBasic();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

2：第二种

image.png

3：检查配置信息是否正确，确认eureka交互的地址无误

摘星族.jpg