spring cloud alibaba 2.2.1 入门教程
一：nacos相关
- 先下载nacos 1.3，直接官网下载解压即可
由于我使用的mysql是8.0，默认支持的是5版本，所以需要修改点东西
在解压文件里面新建文件夹如 D:\nacos\plugins\mysql 然后将8版本的java驱动包放进去（linux同理）
2.新建数据库nacos，执行下图中的nacos-mysql.sql 初始化表 ，修改配置文件
在文件末尾加上
spring.datasource.platform=mysql
db.num=1
db.url.0=jdbc:mysql://192.168.1.130:3306/nacos?zeroDateTimeBehavior=convertToNull&serverTimezone=GMT%2B8&useSSL=false&useUnicode=true&characterEncoding=UTF-8
db.user=root
db.password=root
- 直接启动 D:\nacos\bin\startup.cmd 就行了
二： 自定义parents
<?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>2.2.8.RELEASE</version>
</parent>
<groupId>aaa.com.cn</groupId>
<artifactId>spring-cloud-alibaba-parent</artifactId>
<version>2.2.1-RELEASE</version>
<packaging>pom</packaging>
<properties>
<!-- Environment Settings -->
<java.version>1.8</java.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<!-- Spring Settings -->
<spring-boot.version>2.2.8.RELEASE</spring-boot.version>
<spring-cloud.version>Hoxton.SR6</spring-cloud.version>
<spring-cloud-alibaba.version>2.2.1.RELEASE</spring-cloud-alibaba.version>
</properties>
<name>spring-cloud-alibaba-parent</name>
<url>https://www.aaa.com.cn</url>
<inceptionYear>2020-Now</inceptionYear>
<developers>
<developer>
<name>王</name>
<url>https://gitee.com/</url>
<email>672@qq.com</email>
</developer>
</developers>
<organization>
<name>aaa</name>
<url>https://www.aaa.com.cn/</url>
</organization>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>${spring-cloud-alibaba.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<showWarnings>true</showWarnings>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<addMavenDescriptor>false</addMavenDescriptor>
</archive>
</configuration>
<executions>
<execution>
<configuration>
<archive>
<manifest>
<!-- Add directory entries -->
<addDefaultImplementationEntries>true</addDefaultImplementationEntries>
<addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
<addClasspath>true</addClasspath>
</manifest>
</archive>
</configuration>
</execution>
</executions>
</plugin>
<!-- resource -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
</plugin>
<!-- install -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-install-plugin</artifactId>
</plugin>
<!-- clean -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-clean-plugin</artifactId>
</plugin>
<!-- ant -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
</plugin>
<!-- dependency -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
</plugin>
</plugins>
<pluginManagement>
<plugins>
<!-- Java Document Generate -->
<!-- YUI Compressor (CSS/JS压缩) -->
</plugins>
</pluginManagement>
<resources>
<resource>
<directory>src/main/java</directory>
<excludes>
<exclude>**/*.java
src/main/resources
aliyun-repos
Aliyun Repository
http://maven.aliyun.com/nexus/content/groups/public
true
false
然后deploy自己私服就行了
三：简易服务提供者
- 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>aaa.com.cn</groupId>
<artifactId>spring-cloud-alibaba-parent</artifactId>
<version>2.2.1-RELEASE</version>
</parent>
<artifactId>spring-cloud-alibaba-nacos-provider</artifactId>
<version>1.0.0-RELEASE</version>
<packaging>jar</packaging>
<dependencies>
<!-- Spring Boot Begin -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- Spring Boot End -->
<!-- Spring Cloud Begin -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
</dependency>
<!-- Spring Cloud End -->
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<mainClass>aaa.com.cn.Start</mainClass>
<fork>true</fork>
<addResources>true</addResources>
</configuration>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
- 配置文件 bootstrap.properties
# setting
server.port=8000
spring.profiles.active=dev
spring.application.name=provider-A
server.servlet.context-path=/provider
spring.output.ansi.enabled=always
spring.cloud.inetutils.preferred-networks=192.168
spring.cloud.nacos.config.group=${spring.profiles.active}
spring.cloud.nacos.config.server-addr=192.168.1.130:8848
spring.cloud.nacos.discovery.group=DEFAULT_GROUP
spring.cloud.nacos.discovery.server-addr=192.168.1.130:8848
management.endpoints.web.exposure.include=*
- 启动类
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
@SpringBootApplication
@EnableDiscoveryClient
public class Start {
public static void main(String[] args) {
SpringApplication.run(Start.class, args);
}
@Value("${my-version:1.0.0}")
String version;
@RestController
public class IndexController {
@GetMapping(value = "/index/{message}")
public String index(@PathVariable(value = "message") String message) {
return "Hello Nacos Discovery provider 1 => " + version + message;
}
}
}
四：简易服务消费
- 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>aaa.com.cn</groupId>
<artifactId>spring-cloud-alibaba-parent</artifactId>
<version>2.2.1-RELEASE</version>
</parent>
<artifactId>spring-cloud-alibaba-nacos-consumer</artifactId>
<version>1.0.0-RELEASE</version>
<packaging>jar</packaging>
<dependencies>
<!-- Spring Boot Begin -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- Spring Boot End -->
<!-- Spring Cloud Begin -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
</dependency>
<!-- Spring Cloud End -->
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<mainClass>aaa.com.cn.Start</mainClass>
<fork>true</fork>
<addResources>true</addResources>
</configuration>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
- 配置文件bootstrap.properties
# setting
server.port=8001
spring.profiles.active=dev
spring.application.name=consumer-A
server.servlet.context-path=/consumer
spring.output.ansi.enabled=always
spring.cloud.inetutils.preferred-networks=192.168
spring.cloud.nacos.config.group=${spring.profiles.active}
spring.cloud.nacos.config.server-addr=192.168.1.130:8848
spring.cloud.nacos.discovery.group=DEFAULT_GROUP
spring.cloud.nacos.discovery.server-addr=192.168.1.130:8848
management.endpoints.web.exposure.include=*
feign.client.config.default.connectTimeout= 5000
feign.client.config.default.readTimeout= 5000
3.启动类
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.openfeign.EnableFeignClients;
@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
public class Start {
public static void main(String[] args) {
SpringApplication.run(Start.class, args);
}
}
- 接口demo
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.cloud.context.config.annotation.RefreshScope;
@RestController
@RefreshScope//动态刷新 从nacos config获取最新配置数据，不用重启服务
public class NacosConsumerController {
@Autowired
private IEchoService echoService;
@Value("${author:ab}")//nacos config 配置字段
String name;
@Value("${my-version:1.0.0}")
String version;
@GetMapping(value = "/index/hi")
public String index() {
return echoService.index(name + version);
}
}
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
/**
* @author wongH
* @date 2020/1/16 16:32
* @Version 1.0
* @description path调用服务方的根路径，没有则不用写
*/
@FeignClient(value = "provider-A", path = "/provider")
public interface IEchoService {
@GetMapping(value = "/index/{message}")
String index(@PathVariable(value = "message") String message);
}
本地启动试试吧 http://127.0.0.1:8001/consumer/index/hi