SpringCloud项目整合【eureka+ribbon+zuul+hystrix+hystrix dashboard】

分手后的思念是犯贱 2023-07-05 05:30 11阅读 0赞

> 本文不适合没有SpringCloud基础的人学习。  
> 本编文章，是我学习SpringCloud之后自己整理的一个架子。主要用于自己学习  
> 需要源码的同学，关注下面的公众号回复：**xdxcloud**  
> ![在这里插入图片描述][20200214152633546.jpg]

### 服务架构图 ###

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## 1、创建父工程 ##

#### 1-1：创建项目 ####

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#### 1-2：添加pom依赖 ####

<?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>www.xdx97.cloud</groupId>
        <artifactId>xdxcloud</artifactId>
        <packaging>pom</packaging>
        <version>1.0-SNAPSHOT</version>
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <maven.compiler.source>1.8</maven.compiler.source>
            <maven.compiler.target>1.8</maven.compiler.target>
            <springboot.mybatis.version>2.0.1</springboot.mybatis.version>
            <mybatis-plus-boot-starter.version>3.0.2</mybatis-plus-boot-starter.version>
            <springboot.pagehelper.version>1.2.3</springboot.pagehelper.version>
            <log4j.version>1.2.17</log4j.version>
            <lombok.version>1.18.2</lombok.version>
            <druid.version>1.1.10</druid.version>
            <mysql.connector.version>5.1.45</mysql.connector.version>
            <jackson.version>2.10.1</jackson.version>
        </properties>
    
        <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.boot</groupId>
                    <artifactId>spring-boot-starter-parent</artifactId>
                    <version>2.0.0.RELEASE</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
                
                <dependency>
                    <groupId>mysql</groupId>
                    <artifactId>mysql-connector-java</artifactId>
                    <version>${mysql.connector.version}</version>
                </dependency>
                
                <dependency>
                    <groupId>org.mybatis.spring.boot</groupId>
                    <artifactId>mybatis-spring-boot-starter</artifactId>
                    <version>${springboot.mybatis.version}</version>
                </dependency>
                
                <dependency>
                    <groupId>com.baomidou</groupId>
                    <artifactId>mybatis-plus-boot-starter</artifactId>
                    <version>${mybatis-plus-boot-starter.version}</version>
                </dependency>
                
                <dependency>
                    <groupId>com.alibaba</groupId>
                    <artifactId>druid</artifactId>
                    <version>${druid.version}</version>
                </dependency>
                <dependency>
                    <groupId>com.alibaba</groupId>
                    <artifactId>druid-spring-boot-starter</artifactId>
                    <version>1.1.10</version>
                </dependency>
                
                <dependency>
                    <groupId>com.github.pagehelper</groupId>
                    <artifactId>pagehelper-spring-boot-starter</artifactId>
                    <version>${springboot.pagehelper.version}</version>
                </dependency>
                
                <dependency>
                    <groupId>org.projectlombok</groupId>
                    <artifactId>lombok</artifactId>
                    <version>${lombok.version}</version>
                </dependency>
                
                <dependency>
                    <groupId>log4j</groupId>
                    <artifactId>log4j</artifactId>
                    <version>${log4j.version}</version>
                </dependency>
                
                <dependency>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-core</artifactId>
                    <version>${jackson.version}</version>
                </dependency>
                <dependency>
                    <groupId>com.fasterxml.jackson.core</groupId>
                    <artifactId>jackson-databind</artifactId>
                    <version>2.10.1</version>
                </dependency>
            </dependencies>
        </dependencyManagement>
    
    </project>

## 2、搭建配置eureka集群 ##

#### 2-1：创建maven项目（后面创建maven项目都参考这个） ####

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#### 2-3：以上面相同的方式创建， eureka-7002 ####

#### 2-4：配置pom.xml ####

###### 2-4-1: eureka-7001 ######

###### 2-4-2: eureka-7002 ######

#### 2-5、创建启动类 ####

###### 2-5-1: EurekaServer7001 ######

package com.xdx97.cloud;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
    
    @SpringBootApplication
    @EnableEurekaServer
    public class EurekaServer7001 { 
        public static void main(String[] args) { 
            SpringApplication.run(EurekaServer7001.class,args);
        }
    }

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###### 2-5-1: 同理创建 EurekaServer7002 ######

#### 2-6 配置域名映射 ####

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在末尾加上下面的代码，然后保存。

127.0.0.1 eureka7001.com
    127.0.0.1 eureka7002.com

#### 2-7: 创建 application.yml ####

###### 2-7-1: 7001 application.yml ######

server:
        port: 7001
    
    eureka:
        instance:
            hostname: eureka7001.com   # eureka服务端的实例名称
        client:
            register-with-eureka: false #false表示不向注册中心注册自己
            fetch-registry: false #false表示自己端就是注册中心，我的职责就是维护服务实例，并不需要去检索服务
            service-url:
                #defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/ # 单机版 设置Eureka Server交互地址查询服务与注册服务
                defaultZone: http://eureka7002.com:7002/eureka/    # 集群版 设置Eureka Server交互地址查询服务与注册服务

###### 2-7-2: 7001 application.yml ######

server:
        port: 7002
    
    eureka:
        instance:
            hostname: eureka7002.com   # eureka服务端的实例名称
        client:
            register-with-eureka: false #false表示不向注册中心注册自己
            fetch-registry: false #false表示自己端就是注册中心，我的职责就是维护服务实例，并不需要去检索服务
            service-url:
                #defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/ # 设置Eureka Server交互地址查询服务与注册服务
                defaultZone: http://eureka7001.com:7001/eureka/    # 集群版 设置Eureka Server交互地址查询服务与注册服务

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 10]

#### 2-8 测试 eureka 集群 ####

###### 2-8-1 启动两个 eureka 服务 ######

###### 2-8-2 访问 http://eureka7001.com:7001/ ######

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 11]

## 3、创建公共API部分 ##

#### 3-1：使用上面的方法创建一个maven项目，项目名 cloud-api ####

#### 3-2：pom 依赖 ####

#### 3-3：创建User实体 ####

**这里我使用了，lombok、MybatisPlus、@JsonFormat 插件，上面 maven 已经引入了**

package com.xdx97.cloud.entitys;
    
    import com.baomidou.mybatisplus.annotation.TableId;
    import com.fasterxml.jackson.annotation.JsonFormat;
    import lombok.Data;
    import lombok.experimental.Accessors;
    
    import java.io.Serializable;
    import java.util.Date;
    
    @Data
    @Accessors(chain = true)
    public class User implements Serializable { 
        /** * 用户id */
        @TableId
        private String userId;
    
        /** * 用户名 */
        private String userName;
    
        /** * 用户手机号 */
        private String userPhone;
    
        /** * 角色id */
        private String roleId;
    
        /** * 用户密码 */
        private String userPassword;
    
        /** * 加密盐 */
        private String salt;
    
        /** * openid */
        private String openid;
    
        /** * 用户状态:1启用0停用 */
        private Byte userStatus;
    
        /** * 头像路径 */
        private String headImgPath;
    
        /** * 创建时间 */
        @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss",timezone = "GMT+8")
        private Date gmtCreate;
    
        /** * 修改时间 */
        @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss",timezone = "GMT+8")
        private Date gmtModified;
    
        /** * 创建人 */
        private String userCreate;
    
        /** * 修改人 */
        private String userModified;
    
        private static final long serialVersionUID = 1L;
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 12]

## 4、创建 一个数据库 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 13]

CREATE TABLE `user` (
      `user_id` char(18) NOT NULL COMMENT '用户id',
      `user_name` varchar(50) NOT NULL COMMENT '用户名',
      `user_phone` varchar(20) NOT NULL COMMENT '用户手机号',
      `role_id` char(18) NOT NULL COMMENT '角色id',
      `user_password` char(40) NOT NULL COMMENT '用户密码',
      `salt` char(10) NOT NULL COMMENT '加密盐',
      `openid` varchar(50) NOT NULL DEFAULT '' COMMENT 'openid',
      `user_status` tinyint(4) NOT NULL COMMENT '用户状态:1启用0停用',
      `head_img_path` varchar(100) NOT NULL DEFAULT '' COMMENT '头像路径',
      `gmt_create` datetime NOT NULL COMMENT '创建时间',
      `gmt_modified` datetime DEFAULT NULL COMMENT '修改时间',
      `user_create` char(18) NOT NULL COMMENT '创建人',
      `user_modified` char(18) DEFAULT NULL COMMENT '修改人',
      PRIMARY KEY (`user_id`) USING BTREE,
      KEY `id` (`user_name`,`user_phone`) USING BTREE
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC COMMENT='用户表';

## 5、 创建服务提供方 ##

#### 5-1：创建一个Maven项目， 项目名： cloud-user-8001 ####

#### 5-2：pom依赖 ####

#### 5-3：配置 yml 文件 ####

server:
      port: 8001
    
    mybatis:
      type-aliases-package: com.xdx97.cloud.entitys         # 所有Entity别名类所在包
      mapper-locations: classpath*:mappers/**/*Mapper.xml   # mapper映射文件 - classpath:mybatis/mapper/**/*.xml
    
    
    spring:
        application:
          name: xdxcloud-user
        datasource:
          type: com.alibaba.druid.pool.DruidDataSource
          driver-class-name: com.mysql.jdbc.Driver
          url: jdbc:mysql://localhost:3306/xdx_cloud?useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&useSSL=false
          username: root
          password: 123456
          dbcp2:
            min-idle: 5 # 数据库连接池最小维持连接数
            initial-size: 5 # 初始连接数
            max-total: 5 # 最大连接数
            max-wait-millis: 200 # 等待链接获取的最大超时时间
    
    # 将服务注册进eureka
    eureka:
      client:
        service-url:
          defaultZone: http://eureka7001.com:7001/eureka,http://eureka7002.com:7002/eureka    # 设置Eureka Server交互地址查询服务与注册服务
      instance:
        instance-id: xdxcloud-user8001-hystrix     # 修改注册到eureka服务的名称
        prefer-ip-address: true # 访问路径可以显示ip
    
    
    # 配置info信息
    info:
      app.name: xdxcloud
      company.name: www.xdx97.com
      build.artifactId: $project.artifactId$
      build.version: $project.version$

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 14]

#### 5-4：配置启动类 ####

package com.xdx97.cloud;
    
    import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.boot.web.servlet.ServletRegistrationBean;
    import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
    import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
    import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    import org.springframework.context.annotation.Bean;
    
    @SpringBootApplication
    @EnableEurekaClient             // 本服务启动后会自动注册进eureka
    @EnableDiscoveryClient          // 服务发现
    @EnableCircuitBreaker           //
    public class UserApp8001 { 
        public static void main(String[] args) { 
    
            SpringApplication.run(UserApp8001.class,args);
        }
        @Bean
        public ServletRegistrationBean getServlet() { 
            HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
            ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
            registrationBean.setLoadOnStartup(1);
            registrationBean.addUrlMappings("/hystrix.stream");
            registrationBean.setName("HystrixMetricsStreamServlet");
            return registrationBean;
        }
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 15]

#### 5-5：配置一个基本的查询 ####

###### 5-5-1：配置 mapper ######

package com.xdx97.cloud.mapper;
    
    import com.baomidou.mybatisplus.core.mapper.BaseMapper;
    import com.xdx97.cloud.entitys.User;
    import org.apache.ibatis.annotations.Mapper;
    
    /** * 继承这个BaseMapper是MybatisPlus的功能 */
    @Mapper
    public interface UserMapper extends BaseMapper<User> { 
    
    }

**因为我这里只需要2个简单查询方法，我直接用MybatisPlus完成就好了**

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
    <mapper namespace="com.xdx97.cloud.mapper.UserMapper">
    
    </mapper>

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###### 5-5-2：配置 service ######

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 17]  
**UserService**

package com.xdx97.cloud.service;
    
    import com.xdx97.cloud.entitys.User;
    
    import java.util.List;
    
    public interface UserService { 
    
        List<User> selectList();
    
        User getById(String id);
    }

**UserServiceImpl**

package com.xdx97.cloud.service.impl;
    
    import com.xdx97.cloud.entitys.User;
    import com.xdx97.cloud.mapper.UserMapper;
    import com.xdx97.cloud.service.UserService;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    import java.util.List;
    
    @Service
    public class UserServiceImpl implements UserService { 
    
        @Autowired
        private UserMapper userMapper;
    
        @Override
        public List<User> selectList() { 
    
            List<User> xUsers = userMapper.selectList(null);
            System.out.println("我是 8001号服务");
            return xUsers;
        }
    
        @Override
        public User getById(String id) { 
    
            User user = userMapper.selectById(id);
            return user;
        }
    }

###### 5-5-2：配置 controller ######

package com.xdx97.cloud.controller;
    
    
    import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
    import com.xdx97.cloud.entitys.User;
    import com.xdx97.cloud.service.impl.UserServiceImpl;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.*;
    
    import java.util.List;
    
    @RestController
    public class UserController { 
    
        @Autowired
        private UserServiceImpl userServiceImpl;
    
        @GetMapping("/user/list")
        public List<User> list(){ 
            return userServiceImpl.selectList();
        }
    
        /** * @HystrixCommand * 这是 hystrix的一个服务容错处理，当然该方法异常的时候，就去调用 processHystrix_Get 方法 */
        @GetMapping("/user/getById/{id}")
        @HystrixCommand(fallbackMethod = "processHystrix_Get")
        public User getById(@PathVariable("id")  String id){ 
            System.out.println("id = " + id);
            User user = userServiceImpl.getById(id);
            if (user == null){ 
                throw new  RuntimeException("测试异常！");
            }
            return user;
        }
    
    
       public User processHystrix_Get(@PathVariable("id") String id) { 
            System.out.println("进入异常了~~~~");
            User user = new User().setUserName("报错了，出异常了!!!");
            return user;
        }
    }

###### 5-5-3：测试 ######

**1、先启动两个eureka，再启动8001服务**

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 18]  
**2、我们来测试一下hysrix的熔断服务，也就是当访问出现了异常的时候，我现在的数据库只有一个id=1的数据**  
![在这里插入图片描述][20200213202107479.png]

![在这里插入图片描述][20200213202142432.png]

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## 6、创建zuul路由网关 ##

#### 6-1: 创建一个maven项目： cloud-zuul-9527 ####

#### 6-2：pom依赖 ####

#### 6-3：配置yml文件 ####

server:
        port: 9527
    
    spring:
      application:
        name:  xdx-cloud-zuul
    
    eureka:
        instance:
          instance-id: gateway-9527.com
          prefer-ip-address: true
        client:
            service-url:
                #defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/ # 单机版 设置Eureka Server交互地址查询服务与注册服务
                defaultZone: http://eureka7002.com:7002/eureka/,http://eureka7002.com:7002/eureka/
    
    zuul:
      routes:
        myuser.serviceId: xdxcloud-user
        myuser.path: /myuser/**
      #ignored-services: xdxcloud-user # 不允许使用真实的微服务名访问 单个
      ignored-services: "*"               # 不允许使用真实的微服务名访问 全部
      prefix: /xdx                          # 设置同一访问前缀
    
    # 配置info信息
    info:
      app.name: xdxcloud
      company.name: www.xdx97.com
      build.artifactId: $project.artifactId$
      build.version: $project.version$

#### 6-4：配置域名映射 ####

127.0.0.1 myzuul.com

#### 6-5：配置启动类 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 20]

package com.xdx97.cloud;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
    import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
    
    @SpringBootApplication(exclude = { DataSourceAutoConfiguration.class})
    @EnableZuulProxy
    public class ZuulApp_9527 { 
        public static void main(String[] args) { 
            SpringApplication.run(ZuulApp_9527.class, args);
        }
    }

#### 6-6：测试 ####

**按照下面顺序依次打开**  
![在这里插入图片描述][20200213210502840.png]

**http://myzuul.com:9527/xdx/myuser/user/getById/1**

![在这里插入图片描述][20200213210527481.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 21]

## 7、使用zuul配置【服务降级】 ##

> 服务降级: 简单理解当某个服务挂掉的时候，给出一个应急措施

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 22]

**UserFallback**

package com.xdx97.cloud.fallback;
    
    import org.springframework.cloud.netflix.zuul.filters.route.FallbackProvider;
    import org.springframework.http.HttpHeaders;
    import org.springframework.http.HttpStatus;
    import org.springframework.http.MediaType;
    import org.springframework.http.client.ClientHttpResponse;
    import org.springframework.stereotype.Component;
    
    import java.io.ByteArrayInputStream;
    import java.io.IOException;
    import java.io.InputStream;
    
    @Component
    public class UserFallback implements FallbackProvider { 
        @Override
        public String getRoute() { 
            // 对所有微服务降级
    		return "*";
            // 仅对指定的微服务进行降级
            // return "XDXCLOUD-USER";
        }
    
        @Override
        public ClientHttpResponse fallbackResponse(String route, Throwable cause) { 
            System.out.println("route = " + route);
    
            return new ClientHttpResponse() { 
                @Override
                public HttpStatus getStatusCode() throws IOException { 
                    // 返回状态常量
                    return HttpStatus.SERVICE_UNAVAILABLE;
                }
    
                @Override
                public int getRawStatusCode() throws IOException { 
                    // 返回状态码，这里为503
                    return HttpStatus.SERVICE_UNAVAILABLE.value();
                }
    
                @Override
                public String getStatusText() throws IOException { 
                    // 返回状态码对应的状态短语，这里为"Service Unavailable"
                    return HttpStatus.SERVICE_UNAVAILABLE.getReasonPhrase();
                }
    
                @Override
                public void close() {  }
    
                @Override
                public InputStream getBody() throws IOException { 
                    // 设置降级信息
                    // String msg = "fallback:" + ConsumerFallback.this.getRoute();
                    String msg = "fallback:" + route;
                    return new ByteArrayInputStream(msg.getBytes());
                }
    
                @Override
                public HttpHeaders getHeaders() { 
                    // 设置降级响应头信息
                    HttpHeaders headers = new HttpHeaders();
                    headers.setContentType(MediaType.APPLICATION_JSON);
                    return headers;
                }
            };
        }
    }

#### 测试 ####

**1、开启所有服务，然后访问**

http://myzuul.com:9527/xdx/myuser/user/getById/1

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 23]

**2、然后我们关闭 8001 服务再次访问**

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 24]

## 8、在配置一个服务的提供方做负载均衡 ##

#### 8-1：创建一个Maven项目：cloud-user-8002 ####

**把cloud-user-8001的全部内容复制到8002**

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 25]

**做如下修改：**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 26]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 27]

**测试：依次启动程序**  
![在这里插入图片描述][20200213221638740.png]  
**反复访问这个地址，去控制台发现是轮询调用8001和8002服务（zuul采用ribbon的负载均衡，默认是轮询算法）**  
![在这里插入图片描述][20200213221820404.png]

## 9、创建Hyscrix Dashboard 监控 ##

#### 9-1：创建一个Maven项目：cloud-hysrix-dashboard-9001 ####

#### 9-2：pom依赖 ####

#### 9-3：application.yml ####

server:
        port: 9001

#### 9-4：启动类 ####

package com.xdx97.cloud;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
    import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
    
    @SpringBootApplication(exclude = { DataSourceAutoConfiguration.class})
    @EnableHystrixDashboard
    public class HystrixDashboardApp { 
        public static void main(String[] args) { 
            SpringApplication.run(HystrixDashboardApp.class, args);
        }
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 28]

#### 9-4：测试 ####

**1、依次开启下面的服务**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 29]

**2、访问 http://localhost:9001/hystrix 看到下面的截图，表示开启成功**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 30]

**3、http://127.0.0.1:8001/hystrix.stream**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 31]

**4、然后我们再访问 http://myzuul.com:9527/xdx/myuser/user/getById/1**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 32]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 33]  
**5、如果想要监控某个接口，需要在接口上配置 @HystrixCommand 注解**

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1RvbXdpbGRib2Fy_size_16_color_FFFFFF_t_70 34]

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[20200213202107479.png]: https://img-blog.csdnimg.cn/20200213202107479.png
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