SpringCloud集成Nacos的使用小结
作者:以梦为马、不负韶华
这篇文章主要介绍了SpringCloud集成Nacos的使用小结,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面随着小编来一起学习学习吧
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: https://github.com/alibaba/nacos/releases
- 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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