（八）JAVA springboot ssm b2b2c多用户商城系统源码-消息总线(Spring Cloud Bus)

Spring Cloud Bus 将分布式的节点用轻量的消息代理链接起来。它能够用于广播配置文件的更改或者服务之间的通信，也能够用于监控。本文要讲述的是用Spring Cloud Bus实现通知微服务架构的配置文件的更改。

1、准备工做

本文仍是基于上一篇文章来实现。按照官方文档，咱们只须要在配置文件中配置 spring-cloud-starter-bus-amqp ；这就是说咱们须要装rabbitMq，点击rabbitmq下载。至于怎么使用 rabbitmq，搜索引擎下。

2、改造config-client

在pom文件加上起步依赖spring-cloud-starter-bus-amqp，完整的配置文件以下：

<?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>
    <groupId>com.forezp</groupId>
    <artifactId>config-client</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>config-client</name>
    <description>Demo project for Spring Boot</description>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.retry</groupId>
            <artifactId>spring-retry</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</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-aop</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</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-bus-amqp</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
    </dependencies>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Dalston.RC1</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>
    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>
</project>复制代码

在配置文件application.properties中加上RabbitMq的配置，包括RabbitMq的地址、端口，用户名、密码，代码以下：

spring.rabbitmq.host=localhost
spring.rabbitmq.port=5672
# spring.rabbitmq.username=
# spring.rabbitmq.password=复制代码

若是rabbitmq有用户名密码，输入便可。

依次启动eureka-server、confg-cserver,启动两个config-client，端口为：888一、8882。

访问http://localhost:8881/hi 或者http://localhost:8882/hi 浏览器显示

另外，/bus/refresh接口能够指定服务，即便用”destination”参数，好比 “/bus/refresh?destination=customers:**” 即刷新服务名为customers的全部服务，无论ip。

架构代码以下:

Spring Cloud大型企业分布式微服务云构建的B2B2C电子商务平台源码请加企鹅求求：一零三八七七四六二六