SpringCloud Alibaba入门教程（详细）

淩亂°似流年 2023-02-16 12:03 212阅读 0赞

Provider：

pom.xml

<parent>
    		<groupId>org.springframework.boot</groupId>
    		<artifactId>spring-boot-starter-parent</artifactId>
    		<version>2.0.6.RELEASE</version>
    	</parent>
    
    
    	<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>0.2.1.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.springframework.cloud</groupId>
    			<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
    		</dependency>
    		
    		
    	    <dependency>
    	        <groupId>org.springframework.cloud</groupId>
    	        <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
    	    </dependency>
        
        
    	</dependencies>
    
    	<build>
    		<finalName>SpringCloudAlibabaProvider</finalName>
    		<plugins>
    			<plugin>
    				<groupId>org.springframework.boot</groupId>
    				<artifactId>spring-boot-maven-plugin</artifactId>
    			</plugin>
    		</plugins>
    	</build>

bootstrap.properties

# 这里的应用名对应 Nacos Config 中的 Data ID，
    spring.application.name=MyNacosProvider
    # 指定配置名为 MyNacosProvider 的配置文件,下面配置是后缀
    spring.cloud.nacos.config.file-extension=yaml
    # 注册中心 的地址
    spring.cloud.nacos.config.server-addr=127.0.0.1:8848

启动类：

import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
    
    @SpringBootApplication
    @EnableDiscoveryClient
    public class StartApplication {
    
    	public static void main(String[] args) {
    		SpringApplication.run(StartApplication.class, args);
    	}
    
    }

Controller：

import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.context.ConfigurableApplicationContext;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    @RestController
    public class TestController {
    
    	@Autowired
    	private ConfigurableApplicationContext ctx;
    	
    	@RequestMapping("/test/{id}")
    	public String getMsg(@PathVariable Integer id) {
    		return "msg "+ id + " >> " + ctx.getEnvironment().getProperty("server.port");
    	}
    }

Nacos配置信息：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3Zpc2lvbjU4MzkzNDA2MQ_size_16_color_FFFFFF_t_70][]

如果做负载需要建多个Data ID

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3Zpc2lvbjU4MzkzNDA2MQ_size_16_color_FFFFFF_t_70 1][]

================================================================================================

Consumer：

<parent>
    		<groupId>org.springframework.boot</groupId>
    		<artifactId>spring-boot-starter-parent</artifactId>
    		<version>2.0.6.RELEASE</version>
    	</parent>
    
    
    	<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>0.2.1.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.springframework.cloud</groupId>
    			<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
    		</dependency>
    		
    		<dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-openfeign</artifactId>
            </dependency>
    
    		
    		<dependency>
    			<groupId>org.springframework.cloud</groupId>
    			<artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
    		</dependency>
    
    
    	</dependencies>
    
    
    	<build>
    		<finalName>SpringCloudAlibabaConsumerTest</finalName>
    		<plugins>
    			<plugin>
    				<groupId>org.springframework.boot</groupId>
    				<artifactId>spring-boot-maven-plugin</artifactId>
    			</plugin>
    		</plugins>
    	</build>

bootstrap.properties

# 这里的应用名对应 Nacos Config 中的 Data ID，
    spring.application.name=MyNacosFrontendConfig
    # 指定配置名为 MyNacosFrontendConfig 的配置文件,下面配置是后缀
    spring.cloud.nacos.config.file-extension=yaml
    # 注册中心 的地址
    spring.cloud.nacos.config.server-addr=127.0.0.1:8848
    
    #spring.cloud.nacos.discovery.server-addr=192.168.220.128:8848
    
    #4、限流监控中心
    #spring.cloud.sentinel.transport.dashboard=192.168.220.128:8080
    #spring.cloud.sentinel.eager=true

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 StartApplication {
    
    	public static void main(String[] args) {
    		SpringApplication.run(StartApplication.class, args);
    	}
    
    }

Feign：

import org.springframework.cloud.openfeign.FeignClient;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.RequestMapping;
    
    @FeignClient(value="MyNacosProvider")
    public interface ProviderFeign {
    
    	@RequestMapping("/test/{id}")
    	public String getMsg(@PathVariable Integer id);
    }

Controller：

import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    import com.jacky.feign.ProviderFeign;
    
    @RestController
    public class FrontendController {
    	
    	@Autowired
    	private ProviderFeign providerFeign;
    	
    	@RequestMapping("/ftest/{id}")
    	public String getMsg(@PathVariable Integer id) {
    		return "frontend: "+providerFeign.getMsg(id);
    	}
    }

Nacos配置信息：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3Zpc2lvbjU4MzkzNDA2MQ_size_16_color_FFFFFF_t_70 2][]

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