SpringCloud集成Nacos的使用小结

nacos 注册中心

nacos 是 dubbo 生态系统中重要的注册中心实现，其中 dubbo-registry-nacos 则是 dubbo 融合 nacos 注册中心的实现。

nacos服务安装与启动

安装地址：

• 本文在windows环境测试，下载zip版，解压。
• 配置conf目录下的application.properties文件，配置nacos数据源，端口等。

#*************** spring boot related configurations ***************#
### default web context path:
server.servlet.contextpath=/nacos
### default web server port:
server.port=8848

#*************** network related configurations ***************#
### if prefer hostname over ip for nacos server addresses in cluster.conf:
# nacos.inetutils.prefer-hostname-over-ip=false

### specify local server's ip:
# nacos.inetutils.ip-address=



#*************** config module related configurations ***************#
### if user mysql as datasource:
spring.datasource.platform=mysql

### count of db:
db.num=1

### connect url of db:
db.url.0=jdbc:mysql://127.0.0.1:3306/nacos?servertimezone=utc&characterencoding=utf8
db.user=root
db.password=123456


#*************** naming module related configurations ***************#
### data dispatch task execution period in milliseconds:
# nacos.naming.distro.taskdispatchperiod=200

### data count of batch sync task:
# nacos.naming.distro.batchsynckeycount=1000

### retry delay in milliseconds if sync task failed:
# nacos.naming.distro.syncretrydelay=5000

初始化数据库，脚本位于conf目录下nacos-mysql.sql

启动nacos服务，在cmd中执行bin目录下startup.cmd：

d:\>cd nacos/bin

d:\nacos\bin>startup.cmd

     ,--.
    ,--.'|
  ,--,: : |                      nacos 1.2.1
,`--.'`| ' :            ,---.        running in stand alone mode, all function modules
|  : : | |           '  ,'\  .--.--.  port: 8848
:  |  \ | : ,--.--.   ,---. /  /  | / /  '  pid: 20700
|  : ' '; | /    \  /   \.  ; ,. :| : /`./  console: http://10.118.37.75:8848/nacos/index.html
'  ' ;.  ;.--. .-. | /  / ''  | |: :| : ;_
|  | | \  | \__\/: . ..  ' / '  | .; : \ \  `.   https://nacos.io
'  : | ; .' ," .--.; |'  ; :__|  :  | `----.  \
|  | '`--' / / ,. |'  | '.'|\  \ / / /`--' /
'  : |   ; :  .'  \  :  : `----' '--'.   /
;  |.'   | ,   .-./\  \ /      `--'---'
'---'    `--`---'   `----'

2020-05-07 16:09:06,639 info bean 'org.springframework.security.config.annotation.configuration.objectpostprocessorconfiguration' of type [org.springframework.security.config.annotation.configuration.objectpostprocessorconfiguration$$enhancerbyspringcglib$$d2a494f3] is not eligible for getting processed by all beanpostprocessors (for example: not eligible for auto-proxying)

2020-05-07 16:09:06,713 info bean 'objectpostprocessor' of type [org.springframework.security.config.annotation.configuration.autowirebeanfactoryobjectpostprocessor] is not eligible for getting processed by all beanpostprocessors (for example: not eligible for auto-proxying)

2020-05-07 16:09:06,715 info bean 'org.springframework.security.access.expression.method.defaultmethodsecurityexpressionhandler@2de56eb2' of type [org.springframework.security.access.expression.method.defaultmethodsecurityexpressionhandler] is not eligible for getting processed by all beanpostprocessors (for example: not eligible for auto-proxying)

2020-05-07 16:09:06,717 info bean 'org.springframework.security.config.annotation.method.configuration.globalmethodsecurityconfiguration' of type [org.springframework.security.config.annotation.method.configuration.globalmethodsecurityconfiguration$$enhancerbyspringcglib$$f77937a5] is not eligible for getting processed by all beanpostprocessors (for example: not eligible for auto-proxying)

2020-05-07 16:09:06,721 info bean 'methodsecuritymetadatasource' of type [org.springframework.security.access.method.delegatingmethodsecuritymetadatasource] is not eligible for getting processed by all beanpostprocessors (for example: not eligible for auto-proxying)

2020-05-07 16:09:07,176 info tomcat initialized with port(s): 8848 (http)

2020-05-07 16:09:07,280 info root webapplicationcontext: initialization completed in 2308 ms

2020-05-07 16:09:16,998 info initializing executorservice 'applicationtaskexecutor'

2020-05-07 16:09:17,138 info adding welcome page: class path resource [static/index.html]

2020-05-07 16:09:17,390 info creating filter chain: ant [pattern='/**'], []

2020-05-07 16:09:17,418 info creating filter chain: any request, [org.springframework.security.web.context.request.async.webasyncmanagerintegrationfilter@163d04ff, org.springframework.security.web.context.securitycontextpersistencefilter@1698fc68, org.springframework.security.web.header.headerwriterfilter@56a4479a, org.springframework.security.web.csrf.csrffilter@565b064f, org.springframework.security.web.authentication.logout.logoutfilter@53d1b9b3, org.springframework.security.web.savedrequest.requestcacheawarefilter@207b8649, org.springframework.security.web.servletapi.securitycontextholderawarerequestfilter@57eda880, org.springframework.security.web.authentication.anonymousauthenticationfilter@7c209437, org.springframework.security.web.session.sessionmanagementfilter@20a8a64e, org.springframework.security.web.access.exceptiontranslationfilter@73163d48]

2020-05-07 16:09:17,502 info exposing 2 endpoint(s) beneath base path '/actuator'

2020-05-07 16:09:17,528 info initializing executorservice 'taskscheduler'

2020-05-07 16:09:17,639 info tomcat started on port(s): 8848 (http) with context path '/nacos'

2020-05-07 16:09:17,645 info nacos logs files: d:\nacos\logs\

2020-05-07 16:09:17,646 info nacos conf files: d:\nacos\conf\

2020-05-07 16:09:17,646 info nacos data files: d:\nacos\data\

2020-05-07 16:09:17,646 info nacos started successfully in stand alone mode.

2020-05-07 16:09:17,851 info initializing servlet 'dispatcherservlet'

2020-05-07 16:09:17,858 info completed initialization in 6 ms

nacos平台

访问路径：http://localhost:8848/nacos

可以新建多个环境，项目中通过命名空间映射相应的环境配置

spring:
 profiles:
  active: dev
 datasource:
  driverclassname: com.mysql.cj.jdbc.driver
  jdbc-url: jdbc:mysql://106.13.181.6:3306/demo
  username: root
  password: 123456

新增配置后发布

springcloud项目配置

依赖配置

<dependency>
   <groupid>com.alibaba.cloud</groupid>
   <artifactid>spring-cloud-starter-alibaba-nacos-discovery</artifactid>
   <version>2.1.1.release</version>
 </dependency>
 <dependency>
   <groupid>com.alibaba.cloud</groupid>
   <artifactid>spring-cloud-starter-alibaba-nacos-config</artifactid>
   <version>2.1.1.release</version>
 </dependency>

通过bootstrap.yml配置启动，bootstrap-dev.yml配置文件如下：

spring:
 application:
  name: demo
 cloud:
  nacos:
   server-addr: 127.0.0.1:8848
   config:
    namespace: 9c6b8156-d045-463d-8fe6-4658ce78d0cc
    file-extension: yml

启动类配置

package com.example.demo;

import org.springframework.boot.springapplication;
import org.springframework.boot.autoconfigure.springbootapplication;
import org.springframework.cloud.client.discovery.enablediscoveryclient;

@springbootapplication
@enablediscoveryclient
public class demoapplication {

  public static void main(string[] args) {
    springapplication.run(demoapplication.class, args);
  }
}

数据源配置

package com.example.demo.config;
import com.baomidou.mybatisplus.extension.plugins.paginationinterceptor;
import com.baomidou.mybatisplus.extension.spring.mybatissqlsessionfactorybean;
import org.apache.ibatis.plugin.interceptor;
import org.mybatis.spring.mapper.mapperscannerconfigurer;
import org.slf4j.logger;
import org.slf4j.loggerfactory;
import org.springframework.beans.factory.annotation.qualifier;
import org.springframework.boot.context.properties.configurationproperties;
import org.springframework.boot.jdbc.datasourcebuilder;
import org.springframework.context.annotation.bean;
import org.springframework.context.annotation.configuration;
import org.springframework.core.io.support.pathmatchingresourcepatternresolver;
import javax.sql.datasource;

@configuration
public class sqlsessionconfig {

  private logger logger = loggerfactory.getlogger(sqlsessionconfig.class);

  @bean("datasource")
  @configurationproperties(prefix="spring.datasource")
  public datasource masterdatasource() {
    return datasourcebuilder.create().build();
  }

  @bean("mysqlsessionfactorybean")
  public mybatissqlsessionfactorybean createsqlsessionfactory(@qualifier("datasource") datasource datasource,
                                @qualifier("paginationinterceptor") paginationinterceptor paginationinterceptor) {
    // mybatissqlsessionfactory
    mybatissqlsessionfactorybean sqlsessionfactorybean = null;
    try {
      // 实例sessionfactory
      sqlsessionfactorybean = new mybatissqlsessionfactorybean();
      // 配置数据源
      sqlsessionfactorybean.setdatasource(datasource);
      // 设置 mybatis-plus 分页插件
      interceptor [] plugins = {paginationinterceptor};
      sqlsessionfactorybean.setplugins(plugins);
      // 加载mybatis配置文件
      pathmatchingresourcepatternresolver resourcepatternresolver = new pathmatchingresourcepatternresolver();
      sqlsessionfactorybean.setmapperlocations(resourcepatternresolver.getresources("classpath*:mapper/*.xml"));
    } catch (exception e) {
      logger.error("创建sqlsession连接工厂错误：{}", e.getmessage());
    }
    return sqlsessionfactorybean;
  }

  @bean
  public mapperscannerconfigurer mygetmapperscannerconfigurer() {
    mapperscannerconfigurer mymapperscannerconfigurer = new mapperscannerconfigurer();
    mymapperscannerconfigurer.setbasepackage("com.example.demo.mapper");
    mymapperscannerconfigurer.setsqlsessionfactorybeanname("mysqlsessionfactorybean");
    return mymapperscannerconfigurer;
  }
}

controller

package com.example.demo.controller;
import com.baomidou.mybatisplus.extension.plugins.pagination.page;
import com.example.demo.bean.userdto;
import com.example.demo.constants.sexenum;
import com.example.demo.entity.user;
import com.example.demo.service.userservice;
import org.springframework.beans.factory.annotation.autowired;
import org.springframework.web.bind.annotation.requestbody;
import org.springframework.web.bind.annotation.requestmapping;
import org.springframework.web.bind.annotation.requestmethod;
import org.springframework.web.bind.annotation.restcontroller;
import java.time.localdatetime;
import java.util.list;

@restcontroller
@requestmapping(value = "/demo")
public class usercontroller {

  @autowired
  private userservice userservice;

  @requestmapping(value = "/create", method = requestmethod.post)
  public string create(@requestbody userdto userdto){
    user user = new user();
    user.setname(userdto.getname());
    user.setphone(userdto.getphone());
    user.setcreatetime(localdatetime.now());
    user.setenable(true);
    user.setversion(1l);
    user.setsex(sexenum.getsexenum(userdto.getsex()));
    userservice.insert(user);
    return "ok";
  }
}

启动项目

2020-05-08 15:37:26.384 info 12544 --- [      main] trationdelegate$beanpostprocessorchecker : bean 'org.springframework.cloud.autoconfigure.configurationpropertiesrebinderautoconfiguration' of type [org.springframework.cloud.autoconfigure.configurationpropertiesrebinderautoconfiguration$$enhancerbyspringcglib$$9ea5255e] is not eligible for getting processed by all beanpostprocessors (for example: not eligible for auto-proxying)

 .  ____     _      __ _ _
 /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/ ___)| |_)| | | | | || (_| | ) ) ) )
 ' |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: spring boot ::    (v2.2.6.release)

2020-05-08 15:37:26.601 info 12544 --- [      main] c.a.c.n.c.nacospropertysourcebuilder   : loading nacos data, dataid: 'demo', group: 'default_group', data: spring:
 profiles:
  active: dev
 datasource:
  driverclassname: com.mysql.cj.jdbc.driver
  jdbc-url: jdbc:mysql://106.13.181.6:3306/demo
  username: root
  password: 123456
2020-05-08 15:37:26.608 warn 12544 --- [      main] c.a.c.n.c.nacospropertysourcebuilder   : ignore the empty nacos configuration and get it based on dataid[demo.yml] & group[default_group]
2020-05-08 15:37:26.612 warn 12544 --- [      main] c.a.c.n.c.nacospropertysourcebuilder   : ignore the empty nacos configuration and get it based on dataid[demo-dev.yml] & group[default_group]
2020-05-08 15:37:26.612 info 12544 --- [      main] b.c.propertysourcebootstrapconfiguration : located property source: compositepropertysource {name='nacos', propertysources=[nacospropertysource {name='demo-dev.yml'}, nacospropertysource {name='demo.yml'}, nacospropertysource {name='demo'}]}
2020-05-08 15:37:26.616 info 12544 --- [      main] com.example.demo.demoapplication     : the following profiles are active: dev
2020-05-08 15:37:26.984 warn 12544 --- [      main] o.m.s.mapper.classpathmapperscanner   : skipping mapperfactorybean with name 'usermapper' and 'com.example.demo.mapper.usermapper' mapperinterface. bean already defined with the same name!
2020-05-08 15:37:26.984 warn 12544 --- [      main] o.m.s.mapper.classpathmapperscanner   : no mybatis mapper was found in '[com.example.demo.mapper]' package. please check your configuration.
2020-05-08 15:37:26.985 info 12544 --- [      main] o.s.c.a.configurationclasspostprocessor : cannot enhance @configuration bean definition 'sqlsessionconfig' since its singleton instance has been created too early. the typical cause is a non-static @bean method with a beandefinitionregistrypostprocessor return type: consider declaring such methods as 'static'.
2020-05-08 15:37:27.004 info 12544 --- [      main] o.s.cloud.context.scope.genericscope   : beanfactory id=118dc0e1-e30f-3c3e-b857-cf20ba8b4123
2020-05-08 15:37:27.131 info 12544 --- [      main] trationdelegate$beanpostprocessorchecker : bean 'org.springframework.cloud.autoconfigure.configurationpropertiesrebinderautoconfiguration' of type [org.springframework.cloud.autoconfigure.configurationpropertiesrebinderautoconfiguration$$enhancerbyspringcglib$$9ea5255e] is not eligible for getting processed by all beanpostprocessors (for example: not eligible for auto-proxying)
2020-05-08 15:37:27.302 info 12544 --- [      main] o.s.b.w.embedded.tomcat.tomcatwebserver : tomcat initialized with port(s): 8080 (http)
2020-05-08 15:37:27.309 info 12544 --- [      main] o.a.coyote.http11.http11nioprotocol   : initializing protocolhandler ["http-nio-8080"]
2020-05-08 15:37:27.309 info 12544 --- [      main] o.apache.catalina.core.standardservice  : starting service [tomcat]
2020-05-08 15:37:27.309 info 12544 --- [      main] org.apache.catalina.core.standardengine : starting servlet engine: [apache tomcat/9.0.33]
2020-05-08 15:37:27.434 info 12544 --- [      main] o.a.c.c.c.[tomcat].[localhost].[/]    : initializing spring embedded webapplicationcontext
2020-05-08 15:37:27.435 info 12544 --- [      main] o.s.web.context.contextloader      : root webapplicationcontext: initialization completed in 810 ms
 _ _  |_ _ _|_. ___ _ |  _ 
| | |\/|_)(_| | |_\ |_)||_|_\ 
   /        |     
            3.3.1 
2020-05-08 15:37:27.822 warn 12544 --- [      main] c.n.c.sources.urlconfigurationsource   : no urls will be polled as dynamic configuration sources.
2020-05-08 15:37:27.823 info 12544 --- [      main] c.n.c.sources.urlconfigurationsource   : to enable urls as dynamic configuration sources, define system property archaius.configurationsource.additionalurls or make config.properties available on classpath.
2020-05-08 15:37:27.825 warn 12544 --- [      main] c.n.c.sources.urlconfigurationsource   : no urls will be polled as dynamic configuration sources.
2020-05-08 15:37:27.826 info 12544 --- [      main] c.n.c.sources.urlconfigurationsource   : to enable urls as dynamic configuration sources, define system property archaius.configurationsource.additionalurls or make config.properties available on classpath.
2020-05-08 15:37:27.951 info 12544 --- [      main] o.s.s.concurrent.threadpooltaskexecutor : initializing executorservice 'applicationtaskexecutor'
2020-05-08 15:37:28.151 info 12544 --- [      main] o.s.s.c.threadpooltaskscheduler     : initializing executorservice
2020-05-08 15:37:28.391 info 12544 --- [      main] o.a.coyote.http11.http11nioprotocol   : starting protocolhandler ["http-nio-8080"]
2020-05-08 15:37:28.409 info 12544 --- [      main] o.s.b.w.embedded.tomcat.tomcatwebserver : tomcat started on port(s): 8080 (http) with context path ''
2020-05-08 15:37:28.549 info 12544 --- [      main] c.a.c.n.registry.nacosserviceregistry  : nacos registry, default_group demo 10.118.37.75:8080 register finished
2020-05-08 15:37:28.618 info 12544 --- [      main] com.example.demo.demoapplication     : started demoapplication in 2.941 seconds (jvm running for 3.791)
2020-05-08 15:37:33.589 info 12544 --- [nio-8080-exec-2] o.a.c.c.c.[tomcat].[localhost].[/]    : initializing spring dispatcherservlet 'dispatcherservlet'
2020-05-08 15:37:33.590 info 12544 --- [nio-8080-exec-2] o.s.web.servlet.dispatcherservlet    : initializing servlet 'dispatcherservlet'
2020-05-08 15:37:33.597 info 12544 --- [nio-8080-exec-2] o.s.web.servlet.dispatcherservlet    : completed initialization in 5 ms
2020-05-08 15:37:33.663 info 12544 --- [nio-8080-exec-2] com.example.demo.config.logaspect    : 

测试

2020-05-08 16:05:13.994 info 12544 --- [nio-8080-exec-4] com.example.demo.config.logaspect    : 
 请求信息：
【请求地址】：/demo/create
【请求头】：content-type = application/json, user-agent = postmanruntime/7.24.0, accept = */*, postman-token = fc010815-8e7b-4e11-9fed-3d061f388faf, host = localhost:8080, accept-encoding = gzip, deflate, br, connection = keep-alive, content-length = 49
【请求方法】：string com.example.demo.controller.usercontroller.create(userdto)
【请求参数】：[userdto(id=null, name=zhangsan, phone=17751033130, sex=1)]
2020-05-08 16:05:14.004 warn 12544 --- [nio-8080-exec-4] com.zaxxer.hikari.pool.poolbase     : hikaripool-1 - failed to validate connection com.mysql.cj.jdbc.connectionimpl@2bacd020 (no operations allowed after connection closed.). possibly consider using a shorter maxlifetime value.
2020-05-08 16:05:14.008 warn 12544 --- [nio-8080-exec-4] com.zaxxer.hikari.pool.poolbase     : hikaripool-1 - failed to validate connection com.mysql.cj.jdbc.connectionimpl@5283f4ad (no operations allowed after connection closed.). possibly consider using a shorter maxlifetime value.
2020-05-08 16:05:14.009 warn 12544 --- [nio-8080-exec-4] com.zaxxer.hikari.pool.poolbase     : hikaripool-1 - failed to validate connection com.mysql.cj.jdbc.connectionimpl@1fe3130d (no operations allowed after connection closed.). possibly consider using a shorter maxlifetime value.
2020-05-08 16:05:14.010 warn 12544 --- [nio-8080-exec-4] com.zaxxer.hikari.pool.poolbase     : hikaripool-1 - failed to validate connection com.mysql.cj.jdbc.connectionimpl@11977567 (no operations allowed after connection closed.). possibly consider using a shorter maxlifetime value.
2020-05-08 16:05:14.011 warn 12544 --- [nio-8080-exec-4] com.zaxxer.hikari.pool.poolbase     : hikaripool-1 - failed to validate connection com.mysql.cj.jdbc.connectionimpl@641256c2 (no operations allowed after connection closed.). possibly consider using a shorter maxlifetime value.
2020-05-08 16:05:14.013 warn 12544 --- [nio-8080-exec-4] com.zaxxer.hikari.pool.poolbase     : hikaripool-1 - failed to validate connection com.mysql.cj.jdbc.connectionimpl@29f9f071 (no operations allowed after connection closed.). possibly consider using a shorter maxlifetime value.
2020-05-08 16:05:14.015 warn 12544 --- [nio-8080-exec-4] com.zaxxer.hikari.pool.poolbase     : hikaripool-1 - failed to validate connection com.mysql.cj.jdbc.connectionimpl@2e05f538 (no operations allowed after connection closed.). possibly consider using a shorter maxlifetime value.
2020-05-08 16:05:14.016 warn 12544 --- [nio-8080-exec-4] com.zaxxer.hikari.pool.poolbase     : hikaripool-1 - failed to validate connection com.mysql.cj.jdbc.connectionimpl@41391d2 (no operations allowed after connection closed.). possibly consider using a shorter maxlifetime value.
2020-05-08 16:05:14.017 warn 12544 --- [nio-8080-exec-4] com.zaxxer.hikari.pool.poolbase     : hikaripool-1 - failed to validate connection com.mysql.cj.jdbc.connectionimpl@72c163d4 (no operations allowed after connection closed.). possibly consider using a shorter maxlifetime value.
2020-05-08 16:05:14.019 warn 12544 --- [nio-8080-exec-4] com.zaxxer.hikari.pool.poolbase     : hikaripool-1 - failed to validate connection com.mysql.cj.jdbc.connectionimpl@145d7f85 (no operations allowed after connection closed.). possibly consider using a shorter maxlifetime value.
2020-05-08 16:05:14.545 debug 12544 --- [nio-8080-exec-4] c.example.demo.mapper.usermapper.insert : ==> preparing: insert into user ( name, sex, phone, create_time, enable, version ) values ( ?, ?, ?, ?, ?, ? ) 
2020-05-08 16:05:14.548 debug 12544 --- [nio-8080-exec-4] c.example.demo.mapper.usermapper.insert : ==> parameters: zhangsan(string), man(string), 17751033130(string), 2020-05-08t16:05:13.995(localdatetime), true(boolean), 1(long)
2020-05-08 16:05:14.686 debug 12544 --- [nio-8080-exec-4] c.example.demo.mapper.usermapper.insert : <==  updates: 1
2020-05-08 16:05:14.697 info 12544 --- [nio-8080-exec-4] com.example.demo.config.logaspect    : 
 执行结果：
【响应结果】："ok"
【执行耗时】：701毫秒

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