使用版本 ：Spring Boot：2.1.5 Spring Cloud：Greenwich 需要注意的两个地方！
Spring Cloud与Spring Boot版本号一致问题Spring Security在高版本默认开启了csrf跨域请求伪造，后面我们会解决这个问题[Spring Boot与Spring Cloud版本对应]https://spring.io/projects/spring-cloud
application.yml
server: port: 8761 spring: application: name: eureka-server security: user: name: user password: 1513101 eureka: client: #是否将自己注册到Eureka Server，由于当前应用为Eureka Service，故为false register-with-eureka: false #是否从Eureka Server获取注册信息，由于是单点，所以为false fetch-registry: false #与Eureka Server交互的地址 service-url: defaultZone: http://localhost:8761/eureka/启动类
package com.dfyang; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer; @SpringBootApplication @EnableEurekaServer public class EurekaServerApplication { public static void main(String[] args) { SpringApplication.run(EurekaServerApplication.class, args); } }由于在当前版本spring security自动开启了csrf，由于等会要创建的Eureka Client与Eureka Server端口不同产生了跨域问题，这里我们需要写一个配置类关闭csrf
package com.dfyang.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; @Configuration @EnableWebSecurity public class WebSecurityConfigurer extends WebSecurityConfigurerAdapter { @Override protected void configure(HttpSecurity http) throws Exception { http.csrf().disable(); //关闭跨域 http.authorizeRequests() //认证请求 .anyRequest() //对任何请求 .authenticated() //都需要认证 .and() .httpBasic(); //使用Spring Security提供的登录界面 } }输入localhost:8761，然后输入上面定义的用户名和密码登录即可
pom.xml
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.5.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.dfyang</groupId> <artifactId>service-producer</artifactId> <version>0.0.1-SNAPSHOT</version> <name>service-producer</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>Greenwich.RELEASE</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>application.yml
server: port: 8080 spring: application: name: service-producer1 eureka: client: service-url: defaultZone: http://user:1513101@localhost:8761/eureka/启动类
package com.dfyang; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.netflix.eureka.EnableEurekaClient; @SpringBootApplication @EnableEurekaClient public class ServiceProducerApplication { public static void main(String[] args) { SpringApplication.run(ServiceProducerApplication.class, args); } }启动项目，再次访问localhost:8761，服务注册成功 如果Eureka Server未关闭csrf或者Eureka Client输入的连接用户名或者密码有误，将出现com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server错误 注意—— 这里记录一个坑，之前学习一直使用的default-zone，没想到在用到Spring Security这里出现了问题，同样会出现上面这个问题，有兴趣的可以尝试一下，反正我反复试过多次，建议使用defaultZone而不要使用default-zone
