《Netkiller Spring Cloud 手札》之 Spring Cloud Consol

時間 2019-11-17

標籤 netkiller spring cloud 手札 consol 欄目 Spring 简体版

原文原文鏈接

Netkiller Spring Cloud 手札

Spring Cloud Cookbook

Mr. Neo Chan, 陳景峯(BG7NYT)

中國廣東省深圳市望海路半島城邦三期 518067 +86 13113668890 <netkiller@msn.com>java

$Id: book.xml 606 2013-05-29 09:52:58Z netkiller $git

轉載請與做者聯繫，轉載時請務必標明文章原始出處和做者信息及本聲明。spring

http://www.netkiller.cnapache
http://netkiller.github.ioapp
http://netkiller.sourceforge.netmaven

8.2. Spring Cloud Consol

8.2.1. Spring Cloud Consul 配置

核心參數ide

配置項						默認值
spring.cloud.consul.enabled	true
spring.cloud.consul.host	localhost
spring.cloud.consul.port	8500

8.2.2. Maven 父項目

<?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>

	<groupId>cn.netkiller</groupId>
	<artifactId>parent</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>pom</packaging>
	<name>demo</name>
	<description>Demo project for Spring Boot</description>
	<url>http://www.netkiller.cn</url>

	<organization>
		<name>Netkiller Spring Cloud 手札</name>
		<url>http://www.netkiller.cn</url>
	</organization>

	<developers>
		<developer>
			<name>Neo</name>
			<email>netkiller@msn.com</email>
			<organization>Netkiller Spring Cloud 手札</organization>
			<organizationUrl>http://www.netkiller.cn</organizationUrl>
			<roles>
				<role>Author</role>
			</roles>
		</developer>
	</developers>

	<!--使用aliyun鏡像 -->
	<repositories>
		<repository>
			<id>alimaven</id>
			<name>Maven Aliyun Mirror</name>
			<url>http://maven.aliyun.com/nexus/content/repositories/central/</url>
			<releases>
				<enabled>true</enabled>
			</releases>
			<snapshots>
				<enabled>false</enabled>
			</snapshots>
		</repository>
	</repositories>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>1.8</java.version>
		<spring-cloud.version>Greenwich.SR1</spring-cloud.version>
	</properties>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.3.RELEASE</version>
		<relativePath />
	</parent>


	<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>
		</dependencies>
	</dependencyManagement>

	<!-- <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-netflix</artifactId> <version>1.3.5.RELEASE</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-config</artifactId> <version>1.3.3.RELEASE</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> -->

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<modules>
		<module>consol-producer</module>
		<module>consol-consumer</module>
		<module>consol-config</module>
		<module>openfeign</module>
	</modules>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>

8.2.3. Consul 服務生產者

8.2.3.1. Maven

<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>cn.netkiller</groupId>
		<artifactId>parent</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</parent>
	<!-- <groupId>cn.netkiller</groupId> -->
	<artifactId>consul-producer</artifactId>
	<!-- <version>0.0.1-SNAPSHOT</version> -->
	<name>consul-producer</name>
	<url>http://www.netkiller.cn</url>
	<description>Spring Cloud Consul Sample</description>
	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>11</java.version>
	</properties>
	<dependencies>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-actuator</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-consul-discovery</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<!-- Only needed at compile time -->
			<optional>true</optional>
		</dependency>

		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<!-- <version>3.8.1</version> -->
			<scope>test</scope>
		</dependency>
	</dependencies>
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<!-- <configuration> <mainClass>cn.netkiller.config.Application</mainClass> </configuration> -->
			</plugin>
			<plugin>
				<artifactId>maven-surefire-plugin</artifactId>
				<configuration>
					<skip>true</skip>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

8.2.3.2. application.properties

server.port=8080
spring.application.name=spring-cloud-consul-producer

spring.cloud.consul.host=192.168.4.217
spring.cloud.consul.port=8500

8.2.3.3. SpringApplication

package cn.netkiller.consul;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

@SpringBootApplication
@EnableDiscoveryClient
public class Application {
	public static void main(String[] args) {
		System.out.println("Hello World!");
		SpringApplication.run(Application.class, args);
	}
}

8.2.3.4. TestController

package cn.netkiller.consul.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class TestController {

	public TestController() {
		// TODO Auto-generated constructor stub
	}

	@GetMapping("/hello")
	public String provider() {
		return "Helloworld!!!";
	}

	@RequestMapping("/hi")
	public String hi(@RequestParam(name = "name") String name) {
		return "hi " + name + "!";
	}

}

8.2.4. Consul 服務消費者

8.2.4.1. Maven

<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>cn.netkiller</groupId>
		<artifactId>parent</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</parent>
	<groupId>cn.netkiller</groupId>
	<artifactId>consul-consumer</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>consul-consumer</name>
	<url>http://www.netkiller.cn</url>
	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>11</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-consul-discovery</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>3.8.1</version>
			<scope>test</scope>
		</dependency>
	</dependencies>
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<!-- <configuration> <mainClass>cn.netkiller.config.Application</mainClass> </configuration> -->
			</plugin>
			<plugin>
				<artifactId>maven-surefire-plugin</artifactId>
				<configuration>
					<skip>true</skip>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

8.2.4.2. application.properties

server.port=8082
spring.application.name=spring-cloud-consul-consumer

spring.cloud.consul.host=192.168.4.217
spring.cloud.consul.port=8500
#設置不須要註冊到 consul 中
spring.cloud.consul.discovery.register=false

8.2.4.3. SpringApplication

package cn.netkiller.consul.consumer;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Application {
	public static void main(String[] args) {
		System.out.println("Consol Consumer!");
		SpringApplication.run(Application.class, args);
	}
}

8.2.4.4. TestController

package cn.netkiller.consul.consumer;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalancerClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
public class TestController {

	public ConsumerController() {
		// TODO Auto-generated constructor stub
	}

	@Autowired
	private LoadBalancerClient loadBalancerClient;
	@Autowired
	private DiscoveryClient discoveryClient;

	/**
	 * 獲取全部服務
	 */
	@RequestMapping("/services")
	public Object services() {
		return discoveryClient.getInstances("spring-cloud-consul-producer");
	}

	/**
	 * 從全部服務中選擇一個服務（輪詢）
	 */
	@RequestMapping("/discover")
	public Object discover() {
		return loadBalancerClient.choose("spring-cloud-consul-producer").getUri().toString();
	}

	@RequestMapping("/call")
	public String call() {
		ServiceInstance serviceInstance = loadBalancerClient.choose("spring-cloud-consul-producer");
		System.out.println("服務地址：" + serviceInstance.getUri());
		System.out.println("服務名稱：" + serviceInstance.getServiceId());

		String callServiceResult = new RestTemplate().getForObject(serviceInstance.getUri().toString() + "/hello", String.class);
		System.out.println(callServiceResult);
		return callServiceResult;
	}
}

8.2.5. Openfeign

8.2.5.1. Maven

<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>cn.netkiller</groupId>
		<artifactId>parent</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</parent>
	<groupId>cn.netkiller</groupId>
	<artifactId>openfeign</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>openfeign</name>
	<url>http://www.netkiller.cn</url>
	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>11</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-consul-discovery</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-openfeign</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>3.8.1</version>
			<scope>test</scope>
		</dependency>
	</dependencies>
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<!-- <configuration> <mainClass>cn.netkiller.config.Application</mainClass> </configuration> -->
			</plugin>
			<plugin>
				<artifactId>maven-surefire-plugin</artifactId>
				<configuration>
					<skip>true</skip>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

8.2.5.2. application.properties

server.port=8083
spring.application.name=spring-cloud-consul-openfeign

spring.cloud.consul.host=192.168.4.217
spring.cloud.consul.port=8500

spring.cloud.consul.discovery.register=false

8.2.5.3. SpringApplication

package cn.netkiller.openfeign;

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 Application {
	public static void main(String[] args) {
		System.out.println("openfeign!");
		SpringApplication.run(Application.class, args);
	}
}

8.2.5.4. Feign 接口

package cn.netkiller.openfeign;

import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

@FeignClient(value = "spring-cloud-consul-producer", fallback = FeignFallback.class)
public interface TestFeign {
	@RequestMapping(value = "/hi", method = RequestMethod.GET)
	String hi(@RequestParam(value = "name") String name);
}

package cn.netkiller.openfeign;

public class FeignFallback implements TestFeign {
	@Override
	public String hi(String name) {
		return "sorry,熔斷介入";
	}

}

8.2.5.5. TestController

package cn.netkiller.openfeign;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class TestController {
	@Autowired
	TestFeign testFeign;

	@RequestMapping("/feign")
	public String testFeign(@RequestParam(name = "name") String name) {
		return testFeign.hi(name);
	}
}

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