SpringBootAdminServer使用邮件监控服务（服务下线邮件提醒）

首先需要创建三个项目（或者两个）：EurekaServerAdmin、EurekaClientAdmin及EurekaServer(可不要)

这里讲SpringBootAdmin监控服务和使用spring-boot-starter-mail进行服务下线邮件通知

EurekaServer用于服务注册发现，创建项目详情：注册服务与发现项目链接

再创建EurekaServerAdmin、EurekaClientAdmin，在创建springcloud项目的时候分别搜索server、client选择spring-boot-admin-starter-server与spring-cloud-starter-netflix-eureka-client依赖

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>

<dependency>
	<groupId>de.codecentric</groupId>
	<artifactId>spring-boot-admin-starter-server</artifactId>
</dependency>

EurekaServerAdmin的完整pom文件：

<?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>2.1.2.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.cloud.lyl</groupId>
	<artifactId>EurekaServerAdmin</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>EurekaServerAdmin</name>
	<description>Demo project for Spring Boot</description>

	<properties>
		<java.version>1.8</java.version>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <spring-boot-admin.version>2.1.1</spring-boot-admin.version>
        <spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
			<!-- 移除tomcat依赖关系并在下面添加jetty -->
			<exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
		</dependency>
		<!-- 添加jetty -->
		<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jetty</artifactId>
        </dependency>
        <!-- 发送邮件的依赖 -->
		<dependency>
    		<groupId>org.springframework.boot</groupId>
    		<artifactId>spring-boot-starter-mail</artifactId>
		</dependency>
		<!-- springcloud组件的监测依赖 -->
		<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <!-- SpringBootAdmin的Server依赖 -->
		<dependency>
			<groupId>de.codecentric</groupId>
			<artifactId>spring-boot-admin-starter-server</artifactId>
		</dependency>
		<!-- 客户端依赖，与EurekaServer原理相同，将自己注册到server里面来 -->
		<dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.jolokia</groupId>
            <artifactId>jolokia-core</artifactId>
        </dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<dependencyManagement>
		<dependencies>
			<dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
			<dependency>
				<groupId>de.codecentric</groupId>
				<artifactId>spring-boot-admin-dependencies</artifactId>
				<version>${spring-boot-admin.version}</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>

EurekaClientAdmin的完整pom文件：

<?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>2.1.2.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.cloud.lyl</groupId>
	<artifactId>EurekaClientAdmin</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>EurekaClientAdmin</name>
	<description>Demo project for Spring Boot</description>

	<properties>
		<java.version>1.8</java.version>
		<spring-boot-admin.version>2.1.1</spring-boot-admin.version>
		<spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
	</properties>

	<dependencies>
		<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-webflux</artifactId>
        </dependency>
        <dependency>
            <groupId>org.jolokia</groupId>
            <artifactId>jolokia-core</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-test</artifactId>
            <scope>test</scope>
        </dependency>
	</dependencies>

	<dependencyManagement>
		<dependencies>
			<dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</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>

EurekaServerAdmin的启动类中添加注解并添加配置类SecuritySecureConfig.java：

EurekaServerAdminApplication.java

package com.cloud.lyl;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.context.annotation.Configuration;

import de.codecentric.boot.admin.server.config.EnableAdminServer;

@SpringBootApplication
@Configuration
@EnableAutoConfiguration
@EnableAdminServer
@EnableEurekaClient
public class EurekaServerAdminApplication {

	public static void main(String[] args) {
		SpringApplication.run(EurekaServerAdminApplication.class, args);
	}

}

SecuritySecureConfig.java

package com.cloud.lyl.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.web.authentication.SavedRequestAwareAuthenticationSuccessHandler;

import de.codecentric.boot.admin.server.config.AdminServerProperties;

@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();
		// @formatter:on
	}
}

修改EurekaServerAdmin的配置文件：

application.yml

server:
  port: 8766
spring:
  application:
    name: EurekaServerAdmin
  security:
    user:
      #登陆admin的用户名与密码
      name: "admin"
      password: "admin"
###################
# 邮件通知配置
##################
  mail:
      host: smtp.163.com
      username: #邮件发送方的账户如[email protected]
      password: #授权码，在各邮箱设置界面进行设置
  boot:
     admin:
        notify:
           mail:
            from: #邮件发送方账户[email protected]
            to: #接受邮件的账户[email protected]
            enabled: true

eureka:
  instance:
      leaseRenewalIntervalInSeconds: 10
      health-check-url-path: /actuator/health
      prefer-ip-address: true
      metadata-map:
            user.name: ${spring.security.user.name}
            user.password: ${spring.security.user.password}
  client:
    registryFetchIntervalSeconds: 5
    serviceUrl:
      defaultZone: ${EUREKA_SERVICE_URL:http://localhost:8761}/eureka/

management:
  endpoints:
    web:
      exposure:
        include: "*"
  endpoint:
    health:
      show-details: ALWAYS

EurekaClientAdmin启动类不需要进行修改，修改配置文件

application.yml

spring:
  application:
    name: EurekaClientAdmin
  security:
    user:
      name: "client"
      password: "client"

management:
  endpoints:
    web:
      exposure:
        include: "*"
logging:
  file: /var/log/sample-boot-application.log
  pattern:
    file: clr(%d{yyyy-MM-dd HH:mm:ss.SSS}){faint} %clr(%5p) %clr(${PID}){magenta} %clr(---){faint} %clr([%15.15t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n%wEx
eureka:
  instance:
    leaseRenewalIntervalInSeconds: 10
    health-check-url-path: /actuator/health
    prefer-ip-address: true
    metadata-map:
      user.name:  ${spring.security.user.name}
      user.password:  ${spring.security.user.password}
  client:
    registryFetchIntervalSeconds: 5
    service-url:
      defaultZone: http://localhost:8761/eureka/
server:
  port: 8764

配置文件中对Eureka的配置详情见：eureka服务

接下来依次启动EurekaServer、EurekaServerAdmin、EurekaClientAdmin三个服务

依次在浏览器中打开两个网址：

EurekaServer: http://localhost:8761

EurekaServerAdmin:  http://localhost:8766

进去后EurekaServer中可以看到成功将EurekaServerAdmin、EurekaClientAdmin注册到eurekaserver中

而在EurekaServerAdmin中需要进行登录操作

使用配置文件中的用户名密码：admin

可见两个服务都在上面了，点进去可以查看相关的运行状况

最后我们来看下之前配的邮件通知下线，我们先把EurekaClientAdmin服务下线

然后设定的邮箱里面就收到了一条邮件

这里一个对服务的监控和服务下线邮件通知的提醒就完成了，欢迎留言交流