预期部署方案：两个eureka+三个相关应用

注册时应用出现：Request execution failed with message: Cannot invoke “Object.getClass()” because “authScheme” is null，一开始认为未正确传递eureka配置的账户+密码，例：defaultZone: http://username:password@dev.bab.cn:8761/eureka/，检查后发现一切正常，后续排查后得出结论 hostname不能是127.0.0.1，必须为容器内ip(本次直接配置的是外部转发域名)，调整为hostname: ${POD_IP}，当然也可能是受多个因素影响，如集群网络不通、端口或eureka启动端口配置不争气等：

spring:
  security:
    basic:
      enabled: true
    user:
      name: eureka
      password: abc123456

eureka:
  datacenter: user-server
  environment: prod
  instance:
    hostname: ${POD_IP}  # 容器部署必须填写docker容器的ip
    instance-id: ${random.uuid}
  client:
    #    For stand-alone deployment, the following is false 单机部署的话以下为false
    register-with-eureka: ${IS_CLUSTERED:false}
    fetch-registry: ${IS_CLUSTERED:false}
    service-url:
      defaultZone: http://eureka:abc123456@bab.com/eureka/

网上其他说法总结：

• 降级jdk到8(本次是openjdk17)
• 升级spring core(本次spring boot3.0，core已经达到6.0)
• 添加禁用csrf：

  @Bean
  public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception 			{
      http.csrf().disable().httpBasic();
      return http.build();
  }
  

• 禁用csrf方案2（来自stack overflow）:

  @Bean
  public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
      http
          .csrf(AbstractHttpConfigurer::disable)
          .authorizeHttpRequests(authConfig -> authConfig.anyRequest().authenticated())
          .httpBasic(httpBasic -> {
          })
          .logout(logout -> {
              logout.logoutUrl("/logout");
              logout.addLogoutHandler((request, response, authentication) -> authentication.setAuthenticated(false));
          });
      return http.build();
  }
  

• 禁用csrf方案3:

  @Bean
  public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
      http
          .csrf().disable()
          .authorizeHttpRequests()
          .anyRequest().authenticated() // 任何请求都不需要认证：.anyRequest().permitAll()
          .and()
          .httpBasic();
      return http.build();
  }
  

以上办法都没有成功，而且还导致额外出现Root name ‘timestamp’ does not match expected错误。

遇到的其他问题：eureka存在两个实例时相关服务注册完成后自动断开，排查后因为两个eureka没有将register-with-eureka和etch-registry同时设置为true，且defaultZone的地址不是相互注册状态eureka1填写eureka2的ip、eureka2填写eureka1的ip，可减少为1台或重新配置defaultZone的ip