项目源码及相关说明请查看此文:Spring Cloud入门教程-简介
Spring Boot Admin 用于管理和监控一个或多个Spring Boot程序,在 Spring Boot Actuator 的基础上提供简洁的可视化 WEB UI,提供如下功能:
首先需要一个服务注册中心Eureka Server,让Spring Boot Admin(以下简称 SBA)服务端向它注册服务。
创建新的module admin-server,pom.xml 如下:
4.0.0
com.springcloud.demo
springcloud-demo
1.0-SNAPSHOT
admin-server
0.0.1-SNAPSHOT
jar
admin-server
Demo project for Spring Boot
org.springframework.boot
spring-boot-starter-actuator
de.codecentric
spring-boot-admin-starter-server
2.0.1
org.springframework.cloud
spring-cloud-starter-netflix-eureka-client
org.jolokia
jolokia-core
org.springframework.cloud
spring-cloud-starter-security
org.springframework.boot
spring-boot-starter-test
test
org.springframework.boot
spring-boot-maven-plugin
改版本的 spring cloud 没有相应的 spring-boot-admin-starter-server 版本,这里使用2.0.1 版本,需加上版本号。
启动类加上注解@EnableAdminServer和@EnableEurekaClient
@EnableEurekaClient
@EnableAdminServer
@SpringBootApplication
@ComponentScan("com.springcloud.demo.adminserver")
public class AdminServerApplication {
public static void main(String[] args) {
SpringApplication.run(AdminServerApplication.class, args);
}
}
配置文件配置端口号、程序名、服务注册中心地址和安全配置:
server.port=5000
spring.application.name=admin-server
spring.security.user.name=admin
spring.security.user.password=admin
eureka.instance.metadata-map.user.name=${spring.security.user.name}
eureka.instance.metadata-map.user.password=${spring.security.user.password}
eureka.client.service-url.defaultZone=http://localhost:8791/eureka/
eureka.instance.health-check-url-path=/actuator/health
management.endpoints.web.exposure.include=*
management.endpoint.health.show-details=always
新增一个安全配置类。
@Configuration
public class SecuritySecureConfig extends WebSecurityConfigurerAdapter {
private final String adminContextPath;
public SecuritySecureConfig(AdminServerProperties adminServerProperties) {
this.adminContextPath = adminServerProperties.getContextPath();
}
@Override
protected void configure(HttpSecurity http) throws Exception {
// @formatter:off
SavedRequestAwareAuthenticationSuccessHandler successHandler = new SavedRequestAwareAuthenticationSuccessHandler();
successHandler.setTargetUrlParameter("redirectTo");
http.authorizeRequests()
.antMatchers(adminContextPath + "/assets/**").permitAll()
.antMatchers(adminContextPath + "/login").permitAll()
.anyRequest().authenticated()
.and()
.formLogin().loginPage(adminContextPath + "/login").successHandler(successHandler).and()
.logout().logoutUrl(adminContextPath + "/logout").and()
.httpBasic().and()
.csrf().disable();
}
}
新建module admin-client :
4.0.0
com.springcloud.demo
springcloud-demo
1.0-SNAPSHOT
admin-client
0.0.1-SNAPSHOT
jar
admin-client
Demo project for Spring Boot
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-starter-actuator
de.codecentric
spring-boot-admin-starter-client
2.0.1
org.springframework.cloud
spring-cloud-starter-netflix-eureka-client
org.springframework.boot
spring-boot-starter-test
test
org.springframework.boot
spring-boot-maven-plugin
启动类添加注解@EnableEurekaClient
@EnableEurekaClient
@SpringBootApplication
public class AdminClientApplication {
public static void main(String[] args) {
SpringApplication.run(AdminClientApplication.class, args);
}
}
添加配置;
eureka.client.service-url.defaultZone=http://localhost:8791/eureka/
#表示eureka client发送心跳给server端的频率,默认为30秒
eureka.instance.lease-renewal-interval-in-seconds=10
#表示eureka client间隔多久去拉取服务注册信息,默认为30秒
eureka.client.registry-fetch-interval-seconds=10
eureka.instance.health-check-url-path=/actuator/health
management.endpoints.web.exposure.include=*
management.endpoint.health.show-details=always
启动eureka-server,admin-server ,admin-client.浏览器访问:http://localhost:5000
输入配置的admin,admin --->>login .
Eureka 中的 metadataMap 是专门用来存放一些自定义的数据,当注册中心或者其他服务需要此服务的某些配置时可以在 metadataMap 里取。实际上,每个 instance 都有各自的 metadataMap,map 中存放着需要用到的属性。例如,上面配置中的 eureka.instance.metadata-map.user.name
,当这个服务成功注册到 Eureka 上,Spring Boot Admin 就会取拿到这个 instance,进而拿到 metadataMap 里的属性,然后放入请求头,向此服务发送请求,访问此服务的 Actuator 开放的端点。