title: >-
com.netflix.discovery.shared.transport.TransportException: Cannot execute
request on any known server
date: 2020-11-07T11:20:07.000Z

tags: SpringCloud

1.错误信息

com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server

2.错误背景

启动Eureka Server报错

3.错误原因

Spring2.0以后默认开的安全验证,你需要手动关闭,关闭方法为添加一个配置方法。

4.解决办法

(1)添加Maven依赖
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-security</artifactId>
</dependency>

(2)添加配置类
package com.springcloud.blog.config;

import org.springframework.context.annotation.Configuration;
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;
import org.springframework.security.config.http.SessionCreationPolicy;

@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        // Configure HttpSecurity as needed (e.g. enable http basic).
        http.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.NEVER);
        http.csrf().disable();
        //注意:为了可以使用 http://u s e r : {user}:user:{password}@h o s t : {host}:host:{port}/eureka/ 这种方式登录,所以必须是httpBasic,
        // 如果是form方式,不能使用url格式登录
        http.authorizeRequests().anyRequest().authenticated().and().httpBasic();
    }
}


(3)完成(1)和(2)步骤,重启即可

参考资料如下:
com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known serve

5.补充说明

最奇葩的是,我后来尝试去除该配置也能正常启动Eureka Server成功,之前早上启动的时候一直报错,哪怕退出IDE重新登录也一样,同时也验证过配置文件是否有问题,但都没有解决,于是找到了上述的链接,加了maven依赖和配置类,一启动就成功了。

文章目录
  1. 1. tags: SpringCloud
    1. 1.0.1. 1.错误信息
    2. 1.0.2. 2.错误背景
    3. 1.0.3. 3.错误原因
    4. 1.0.4. 4.解决办法
      1. 1.0.4.1. (1)添加Maven依赖
      2. 1.0.4.2. (2)添加配置类
      3. 1.0.4.3. (3)完成(1)和(2)步骤,重启即可
    5. 1.0.5. 5.补充说明