SpringCloud集成Nacos的使用小结
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2022-06-24 22:26:00
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...
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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