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目录什么是Bus搭建RabbitMQ服务实现自动配置刷新指定服务刷新配置集成WEBhook实现自动刷新什么是Bus 0.解释 https://spring.io/projects/s
0.解释
实现配置刷新原理
0.下载rabbitmq安装包 [可以直接使用Docker安装更方便] 官方安装包下载:Https://www.rabbitmq.com/install-rpm.html#downloads
[注意:][这里安装包只能用于Centos7.x系统]
1.将rabbitmq安装包上传到linux系统中
erlang-22.0.7-1.el7.x86_64.rpm
rabbitmq-server-3.7.18-1.el7.noarch.rpm
2.安装Erlang依赖包
rpm -ivh erlang-22.0.7-1.el7.x86_64.rpm
3.安装RabbitMQ安装包(需要联网)
yum install -y rabbitmq-server-3.7.18-1.el7.noarch.rpm
注意:默认安装完成后配置文件模板在:/usr/share/doc/rabbitmq-server-3.7.18/rabbitmq.config.example目录中,需要将配置文件复制到/etc/rabbitmq/目录中,并修改名称为rabbitmq.config
4.复制配置文件
cp /usr/share/doc/rabbitmq-server-3.7.18/rabbitmq.config.example /etc/rabbitmq/rabbitmq.config
5.查看配置文件位置
ls /etc/rabbitmq/rabbitmq.config
6.修改配置文件(参见下图:)
vim /etc/rabbitmq/rabbitmq.config
将上图中配置文件中红色部分去掉%%
,以及最后的,
逗号 修改为下图:
7.执行如下命令,启动rabbitmq中的插件管理
rabbitmq-plugins enable rabbitmq_management
出现如下说明:
Enabling plugins on node rabbit@localhost:
rabbitmq_management
The following plugins have been configured:
rabbitmq_management
rabbitmq_management_agent
rabbitmq_web_dispatch
Applying plugin configuration to rabbit@localhost...
The following plugins have been enabled:
rabbitmq_management
rabbitmq_management_agent
rabbitmq_web_dispatch
set 3 plugins.
Offline change; changes will take effect at broker restart.
8.启动RabbitMQ的服务
systemctl start rabbitmq-server
systemctl restart rabbitmq-server
systemctl stop rabbitmq-server
9.查看服务状态(见下图:)
systemctl status rabbitmq-server
● rabbitmq-server.service - RabbitMQ broker
Loaded: loaded (/usr/lib/systemd/system/rabbitmq-server.service; disabled; vendor preset: disabled)
Active: active (running) since 三 2019-09-25 22:26:35 CST; 7s aGo
Main PID: 2904 (beam.smp)
Status: “Initialized”
CGroup: /system.slice/rabbitmq-server.service
├─2904 /usr/lib64/erlang/erts-10.4.4/bin/beam.smp -W w -A 64 -MBas ageffcbf -MHas ageffcbf -
MBlmbcs…
├─3220 erl_child_setup 32768
├─3243 inet_gethost 4
└─3244 inet_gethost 4
…
10.关闭防火墙服务
systemctl disable firewalld
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
systemctl stop firewalld
11.访问web管理界面
http://10.15.0.8:15672/
12.登录管理界面
username: guest
passWord: guest
13.MQ服务搭建成功
1.在所有项目中引入bus依赖
<!--引入bus依赖-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-bus-amqp</artifactId>
</dependency>
2.配置统一配置中心连接到mq
spring.rabbitmq.host=localhost #连接主机
spring.rabbitmq.port=5672 #连接mq端口
spring.rabbitmq.username=user #连接mq用户名
spring.rabbitmq.password=password #连接mq密码
3.远端配置中加入连接mq配置
4.启动统一配置中心服务 正常启动
5.启动客户端服务 加入bus组件之后客户端启动报错原因springcloud中默认链接不到远程服务器不会报错,但是在使用bus消息总线时必须开启连接远程服务失败报错
spring.cloud.config.fail-fast=true
6.修改远程配置后在配置中心服务通过执行post接口刷新配置 curl -X POST http://localhost:7878/actuator/bus-refresh
7.通过上述配置就实现了配置统一刷新
1.说明
2.指定服务刷新配置实现
[注意:][configclient代表刷新服务的唯一标识]
1.配置webhooks
内网穿透可以使用natapp进行穿透,本地一个穿透免费穿透,https://natapp.cn/ 步骤非常简单。然后将穿透的地址放入到所需地址栏即可。
2.解决400错误问题
@Component
public class UrlFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
HttpServletRequest httpServletRequest = (HttpServletRequest)request;
HttpServletResponse httpServletResponse = (HttpServletResponse)response;
String url = new String(httpServletRequest.getRequestURI());
//只过滤/actuator/bus-refresh请求
if (!url.endsWith("/bus-refresh")) {
chain.doFilter(request, response);
return;
}
//获取原始的body
String body = readAsChars(httpServletRequest);
System.out.println("original body: "+ body);
//使用HttpServletRequest包装原始请求达到修改post请求中body内容的目的
CustometRequestWrapper requestWrapper = new CustometRequestWrapper(httpServletRequest);
chain.doFilter(requestWrapper, response);
public void destroy() {
private class CustometRequestWrapper extends HttpServletRequestWrapper {
public CustometRequestWrapper(HttpServletRequest request) {
super(request);
@Override
public ServletInputStream getInputStream() throws IOException {
byte[] bytes = new byte[0];
ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bytes);
return new ServletInputStream() {
@Override
public boolean isFinished() {
return byteArrayInputStream.read() == -1 ? true:false;
}
public boolean isReady() {
return false;
public void setReadListener(ReadListener readListener) {
public int read() throws IOException {
return byteArrayInputStream.read();
};
public static String readAsChars(HttpServletRequest request)
{
BufferedReader br = null;
StringBuilder sb = new StringBuilder("");
try
{
br = request.getReader();
String str;
while ((str = br.readLine()) != null)
{
sb.append(str);
}
br.close();
catch (IOException e)
e.printStackTrace();
finally
if (null != br)
try
{
br.close();
catch (IOException e)
e.printStackTrace();
return sb.toString();
}
到此这篇关于SpringCloud Bus组件的使用的文章就介绍到这了,更多相关SpringCloud Bus组件内容请搜索编程网以前的文章或继续浏览下面的相关文章希望大家以后多多支持编程网!
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本文标题: SpringCloud Bus组件的使用配置详解
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