1.昨天下午开始尝试做整合,整合完运行项目一直报错
2019-04-16 16:50:30.206 ERROR 10876 --- [ main] o.s.c.a.nacos.NacosConfigProperties : create config service error!properties=NacosConfigProperties{serverAddr='null', encode='null', group='DEFAULT_GROUP', sharedDataids='null', refreshableDataids='null', prefix='null', fileExtension='properties', timeout=3000, endpoint='null', namespace='null', accessKey='null', secretKey='null', contextPath='null', clusterName='null', name='null', activeProfiles=[]},e=,
com.alibaba.nacos.api.exception.NacosException: null
at com.alibaba.nacos.api.config.ConfigFactory.createConfigService(ConfigFactory.java:45) ~[nacos-api-0.6.2.jar:na]
at com.alibaba.nacos.api.NacosFactory.createConfigService(NacosFactory.java:41) ~[nacos-api-0.6.2.jar:na]
at org.springframework.cloud.alibaba.nacos.NacosConfigProperties.configServiceInstance(NacosConfigProperties.java:347) ~[spring-cloud-alibaba-nacos-config-0.2.1.RELEASE.jar:0.2.1.RELEASE]
at org.springframework.cloud.alibaba.nacos.client.NacosPropertySourceLocator.locate(NacosPropertySourceLocator.java:63) [spring-cloud-alibaba-nacos-config-0.2.1.RELEASE.jar:0.2.1.RELEASE]
at org.springframework.cloud.bootstrap.config.PropertySourceBootstrapConfiguration.initialize(PropertySourceBootstrapConfiguration.java:94) [spring-cloud-context-2.0.2.RELEASE.jar:2.0.2.RELEASE]
at org.springframework.boot.SpringApplication.applyInitializers(SpringApplication.java:628) [spring-boot-2.0.6.RELEASE.jar:2.0.6.RELEASE]
at org.springframework.boot.SpringApplication.prepareContext(SpringApplication.java:364) [spring-boot-2.0.6.RELEASE.jar:2.0.6.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:305) [spring-boot-2.0.6.RELEASE.jar:2.0.6.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1242) [spring-boot-2.0.6.RELEASE.jar:2.0.6.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1230) [spring-boot-2.0.6.RELEASE.jar:2.0.6.RELEASE]
at com.gfyw.client.ClientApplication.main(ClientApplication.java:19) [classes/:na]
通过上网查,找到一个感觉靠谱的解决方法,大致意思是说是springboot加载配置文件的问题,要把项目的配置文件” application.properties”的nacos配置写入” bootstrap.properties”中。
文章地址: https://blog.csdn.net/wk52525/article/details/88547069
一通操作之后,错是不报了,但是注册中心还是没注册上……这个给我愁的,后来发现可能是springboot和springcloud的对应版本问题。
springboot和springcloud的对应版本:https://spring.io/projects/spring-cloud
2.关于nacos注册中心的maven坐标:
3.Pom文件:
<?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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.nacos</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>nacos</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Finchley.SR2</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>0.2.1.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.2</version>
<optional>true</optional>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
1.创建一个springboot项目,作为服务提供方
2.配置文件: application.properties
#注册服务名
spring.application.name=test-nacos-server
#端口号
server.port=8001
#nacos地址
spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
3.启动类
package com.nacos.demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
@SpringBootApplication
@EnableDiscoveryClient
public class NacosApplication {
public static void main(String[] args) {
SpringApplication.run(NacosApplication.class, args);
}
@RestController
static class TestController {
@GetMapping("/test")
public String hello(@RequestParam String msg) {
String res = "这是啥?" + msg;
System.out.println(res);
return res;
}
}
}
@EnableDiscoveryClient:开启服务注册发现
4.启动:
2019-04-16 14:31:06.662 INFO 3848 --- [ main] o.s.c.a.n.registry.NacosServiceRegistry : nacos registry, alibaba-nacos-discovery-server 192.168.99.1:8001 register finished
控制台出现此内容,说明注册成功
5.idea启动多个服务实例(简单粗暴):
①.
②.
③.启动项目:
④.启动完成后修改application.properties文件中的端口号。修改完端口号之后再启动一次项目(之前启动的项目不要关闭)
⑤.两个实例启动完成,进入nacos看一眼,没啥毛病
1.创建一个springboot项目,作为服务消费方
2.配置文件: application.properties
#注册服务名
spring.application.name=test-nacos-client
#端口号
server.port=9000
#nacos地址
spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
3.启动类:
package com.nacos.demo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalancerClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
@SpringBootApplication
@EnableDiscoveryClient
public class NacosClientApplication {
public static void main(String[] args) {
SpringApplication.run(NacosClientApplication.class, args);
}
@RestController
static class TestController {
@Autowired
LoadBalancerClient loadBalancerClient;
@GetMapping("/test")
public String test() {
/*springcloud common的负载均衡接口,提供服务名实现服务调用*/
ServiceInstance serviceInstance = loadBalancerClient.choose("test-nacos-server");
String url = serviceInstance.getUri()+"/test?msg=nacos";
RestTemplate restTemplate = new RestTemplate();
String result = restTemplate.getForObject(url, String.class);
String msg = url + "---- return : " + result;
System.out.println(msg);
return msg;
}
}
}
4.启动
5.进入nacos,再看一眼是否注册上
三.用postman或其他工具测一下
版权说明 : 本文为转载文章, 版权归原作者所有 版权申明
原文链接 : https://blog.csdn.net/Very666/article/details/89336148
内容来源于网络,如有侵权,请联系作者删除!