Spring Cloud Alibaba 组件急速入门

谁践踏了优雅 2021-10-13 16:18 253阅读 0赞

# 快速开始 #

docker 搭建各种环境资料：\[必学docker容器技术\]([https://www.e404e.cn/][https_www.e404e.cn])

*  **Clone 项目 --这是注册中心先下载 window  和Linux版本 我使用的是Linux**

git clone https://github.com/nacos-group/nacos-k8s.git

下载完成解压启动即可---存放的目录是自定义的

Linux 进入 /usr/local/nacos/nacos/bin

\---启动命令 sh startup.sh -m standalone

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyMDgyNzAx_size_16_color_FFFFFF_t_70][]

生产者
    
    package com.alibaba;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
    
    
    /**
     * 启动类
     * @author huangxiangxiang
     * @version 2.0.0
     * @createTime 2019年08月15日 15:44:00
     */
    
    @EnableDiscoveryClient
    @SpringBootApplication
    public class AlibabaAPP {
        public static void main(String[] args) {
            SpringApplication.run(AlibabaAPP.class, args);
        }
    
    
    
    
        }

package com.alibaba.services;
    
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    
    /**
     * 接口
     */
    public interface ServiceA {
    
    
        //接口要加映射注解  --不然报错
    
        @GetMapping("/hello")
        public String hello(@RequestParam String name);
    }

package com.alibaba.services.ServiceImpl;
    
    import com.alibaba.services.ServiceA;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.RestController;
    
    /**
     * 实现类
     * @author huangxiangxiang
     * @version 2.0.0
     * @createTime 2019年08月15日 17:42:00
     */
    
    
    @RestController              //必须加@RestController  注解不加就报错 实现类 ----因为通过远程调用的
    public class ServiceAImpl implements ServiceA {
    
        public String hello(@RequestParam String name) {
            return "hello远程调用" + name;
        }
    }

配置文件  bootstrap.properties

spring.application.name=alibaba-server
    
    server.port=8070
    
    spring.cloud.nacos.discovery.server-addr=192.168.220.128:8848

--------------------

消费者

package com.alibaba;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
    import org.springframework.cloud.openfeign.EnableFeignClients;
    
    
    /**
     * 启动类
     *
     * @author huangxiangxiang
     * @version 2.0.0
     * @createTime 2019年08月15日 15:47:00
     */
    
    @SpringBootApplication
    @EnableDiscoveryClient
    @EnableFeignClients
    public class ClientApp {
    
    
        public static void main(String[] args) {
            SpringApplication.run(ClientApp.class, args);
        }
    
    
    }

package com.alibaba.fegin;
    
    import com.alibaba.services.ServiceA;
    import org.springframework.cloud.openfeign.FeignClient;
    
    /**
     * AlibabaCloud远程调用 单一接口要加影射 不然报错
     */
    
    @FeignClient("alibaba-server")
    public interface ClientFegin extends ServiceA {
    
    
        /**
         * 伪代码
         * ---加影射 （@requestMapper("/getName")）
         * public String getName(String name)
         */
    }

package com.alibaba.controller;
    
    import com.alibaba.fegin.ClientFegin;
    import lombok.extern.slf4j.Slf4j;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    
    /**
     * 消费Controller
     */
    @Slf4j
    @RestController
    public class TestController {
    
        @Autowired
        ClientFegin client;
    
        @GetMapping("/test")
        public String test() {
            String result = client.hello("didi");
            return "Return : " + result;
        }
    }

配置文件  bootstrap.properties

spring.application.name=alibaba-client
    
    server.port=9000
    
    spring.cloud.nacos.discovery.server-addr=192.168.220.128:8848

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">
        <parent>
            <artifactId>alibaba-server-merber</artifactId>
            <groupId>com.alibaba</groupId>
            <version>1.0-SNAPSHOT</version>
        </parent>
        <modelVersion>4.0.0</modelVersion>
    
        <artifactId>alibaba-server</artifactId>
    
    
    
        <dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Finchley.SR1</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                    <version>0.2.2.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>
    
    
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-openfeign</artifactId>
            </dependency>
    
    
        </dependencies>
    
    </project>

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyMDgyNzAx_size_16_color_FFFFFF_t_70]: /images/20211013/83f005e027d4472581aff8ea4eea452d.png