springcloud fegin和rabbot分别实现微服务

其他 2019-04-27 16:10:55 阅读次数: 0

下面我们开始实战演练 网上关于spring cloud 的资源非常多 我是根据我的学习经验 来写这篇文章 希望 帮到 你们

第一课 rabbot 实现 微服务

这里要创建 三个项目

一 项目注册中心 eureka

  1. 项目目录结构
    在这里插入图片描述
    1. yml 文件编译
server:
   port: 8815 
  
eureka:
  client:
    serviceUrl:
      defaultZone: http://192.168.88.200:12345/eureka/

security:
  basic:
    enabled: false

spring: 
  application:
    name: service-fregin-server
feign:
  hystrix:
    enabled:  true  # 开启 Feign 对 Hystrix 的支持
  compression:
    request:
      enabled:  true   # 开启对 request 请求压缩
      mime-types:
        - text/xml
        - application/xml
        - application/json    # 指定压缩格式
      min-request-size: 2048  # 压缩的最小阀值，默认 2048，超过2048 （字节） 进行压缩。

    response:
      enabled:  true  # 开启对 response 的压缩
  1. pom 导入
<?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>2.1.4.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.example</groupId>
	<artifactId>discSystem-3</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>discSystem-3</name>
	<description>Demo project for Spring Boot</description>

	<properties>
		<java.version>1.8</java.version>
		<spring-cloud.version>Greenwich.SR1</spring-cloud.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
	

		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-config-server</artifactId>
		</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	

	</dependencies>

	<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>

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

</project>
  1. 启动类
package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

import rx.annotations.Experimental;



@SpringBootApplication
@EnableEurekaServer   //该注解表明为eureka服务，又可以联合多个服务为集群，对外提供服务注册以及发现功能
public class DiscSystem3Application {

	public static void main(String[] args) {
		SpringApplication.run(DiscSystem3Application.class, args);
	}

}
  1. 启动项目
    6.在这里插入图片描述
    注册中心编译完毕

二 . 基于ribbot 的微服务架构
spring cloud 可以任意转换谁是提供者 谁是接受者 这里方便大家理解 我特别区分一下

  1. 提供者目录结构在这里插入图片描述

  2. 提供者 yml

server:
   port: 8813 
  
eureka:
  client:
    serviceUrl:
      defaultZone: http://192.168.88.200:12345/eureka/

security:
  basic:
    enabled: false

spring: 
  application:
    name: service-client
  1. 提供者 pom
<?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>2.1.4.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.example</groupId>
	<artifactId>demo-1</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>demo-1</name>
	<description>Demo project for Spring Boot</description>

	<properties>
		<java.version>1.8</java.version>
		<spring-cloud.version>Greenwich.SR1</spring-cloud.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-config</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
			<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-config-server</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
		</dependency>

		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<scope>runtime</scope>
		</dependency>
	</dependencies>

	<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>

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

</project>
  1. 启动类
package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.context.annotation.ComponentScan;

@SpringBootApplication
@EnableEurekaClient
@ComponentScan(basePackages = {"com.example"})
public class Demo1Application {

	public static void main(String[] args) {
		SpringApplication.run(Demo1Application.class, args);
	}

}
  1. 提供服务controller
package com.example.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;


@CrossOrigin
@Controller
public class ServiceController {

	
	 @RequestMapping(value = "/hello")
	    @ResponseBody
	    public String hello() {
	        String s="测试开源框架GET请求连通乱码问题"+"这是service层：port="+"8813";
	        return s ;
	    }


}
  1. 提供者启动成功 会在注册中心 生成一条注册记录
    在这里插入图片描述
  2. 提供者访问资源(成功访问)
    在这里插入图片描述
  3. 定义消费者（目录结构 和前面一样）
  4. yml 编译
server:
   port: 8810 
  
eureka:
  client:
    serviceUrl:
      defaultZone: http://192.168.88.200:12345/eureka/

security:
  basic:
    enabled: false

spring: 
  application:
    name: service-produce
  1. pom
<?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>2.1.4.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.example</groupId>
	<artifactId>discSystem-4</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>discSystem-4</name>
	<description>Demo project for Spring Boot</description>

	<properties>
		<java.version>1.8</java.version>
		<spring-cloud.version>Greenwich.SR1</spring-cloud.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-thymeleaf</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-config-server</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
		</dependency>
        <dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>


		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<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>

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

</project>
  1. 启动类
package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;

@SpringBootApplication
@EnableEurekaClient
public class DiscSystem4Application {
	@Bean
	@LoadBalanced	//Ribbon负载均衡
	public RestTemplate restTemplate(){
		return new RestTemplate();
	}

	public static void main(String[] args) {
		SpringApplication.run(DiscSystem4Application.class, args);
	}

}
  1. 消费者controller
package com.example.demo;


import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@Controller
public class ClientController {
	
	@Autowired
	public RestTemplate restTemplate;

    @RequestMapping(value = "getHello")
    @ResponseBody
    public String getCus(){
        
        String url="http://service-client:8813/hello";
		
		//返回值类型和我们的业务返回值一致
		return restTemplate.getForObject(url, String.class);
    }

}
  1. 启动成功
    在这里插入图片描述
  2. 提供者 和消费者定义成功 测试
    在这里插入图片描述

上面是第一种 微服务架构

文章太长 我会在下篇文长 写第二种微服务架构
欢迎大家加qq群一起学习 只为大家一起交流 1018954756

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