搭建springcloud的demo之Eureka服务注册和发现(二)

Dear 丶 2022-03-11 08:26 112阅读 0赞

**2.Eureka服务注册和发现**  
**Eureka**是Netflix的一个子模块,也是核心模块之一,Eureka是一个基于REST的服务,用于定位服务,以实现云端中间层服务发现和故障转移,服务注册与发现对于微服务架构来说是非常重要的,有了服务发现与注册,只需要使用服务的标识符,就可以访问到服务,而不需要修改服务调用的配置文件了,功能类似于dubbo的注册中心,比如**Zookeeper**;

Eureka采用了C-S的设计架构,Eureka Server 作为服务注册功能的服务器,他是服务注册中心;

而系统中的其他微服务,使用**Eureka**的客户端连接到Eureka Server并维持心跳连接,这样系统的维护人员可以通过**Eureka Server**来监控系统中各个微服务是否正常运行,**SpringCloud**的一些其他模块(比如**Zuul**)就可以通过**Eureka Server** 来发现系统中的其他微服务,并执行相关的逻辑;

**Eureka包含两个组件:Eureka Server和Eureka Client;**  
**Eureka Server提供服务注册服务**  
各个节点启动后,会在**Eureka Server**中进行注册,这样Eureka Server中的服务注册中将会存储所有可用服务节点的信息,服务节点的信息可以在界面中直观的看到;

**Eureka Client**是一个Java客户端,用于简化**Eureka Server**的交互,客户端同时也具备一个内置的,使用轮询(**round-robin**)负载算啊的负载均衡器,在应用启动后,将会向**Eureka Server**发送心跳(默认周期为30秒).如果**Eureka Server**在多个心跳周期内没有接收到某个节点的心态,**Eureka Server**将会从服务注册表中把这个服务节点移除(默认90秒);

**Eureka的三大角色:**

**1. Eureka Server提供服务注册和发现;  
2. Service Provider 服务提供方将自身服务注册到Eureka,从而使服务消费方能够找到;  
3. Service Consumer服务消费方从Eureka获取注册服务列表,从而能够消费服务;**

**2.1新建一个microservicecloud-provider-dept-7001(Eureka服务注册中心Module)**  
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**边写pom.xml文件**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 1]

**编写application.yml**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 2]

server:
      port: 7001
      
    eureka: 
      instance:
        hostname: localhost         #eureka服务端的实例名称
      client:
        register-with-eureka: false #false表示不想注册中心注册自己
        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/ # 设置与Eureka server交互的地址查询服务和注册服务

新增加一个新组件的步骤(这里不属于操作,属于一点小笔记而已)  
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**新建EurekaServer7001\_App.java启动类**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 4]

package com.yt.springcloud;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.SpringBootConfiguration;
    import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
    import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
    
    @EnableAutoConfiguration
    @SpringBootConfiguration
    @EnableEurekaServer //EurekaServer服务器端启动类,接受其他微服务注册进来
    public class EurekaServer7001_App {
    	
    	public static void main(String[] args) {
    		SpringApplication.run(EurekaServer7001_App.class, args);
    	}
    
    }

**启动EurekaServer7001\_App 访问路径:[http://localhost:7001/][http_localhost_7001]**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 5]  
**将microservicecloud-provider-dept-8001项目注册到Eureka**  
**修改microservicecloud-provider-dept-8001项目的pom.xml文件(在之前的pom.xml基础之上添加了两个依赖)**

<dependency>
      		<groupId>org.springframework.cloud</groupId>
      		<artifactId>spring-cloud-starter-eureka</artifactId>
      	</dependency>
      	<dependency>
      		<groupId>org.springframework.cloud</groupId>
      		<artifactId>spring-cloud-starter-config</artifactId>
      	</dependency>

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 6]  
**修改microservicecloud-provider-dept-8001项目的application.yml文件(在之前的application.yml基础之上添加了eureka)**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 7]

server:
      port: 8001                                         # 当前微服务的端口
      
    mybatis:
      config-location: classpath:mybatis/mybatis.cfg.xml # mybatis配置文件所在路径
      type-aliases-package: com.yt.springcloud.entity    # 所有饿entity实体类所在包
      mapper-locations:
      - classpath:mybatis/mapper/**/*.xml                # mapper映射文件
    
    spring:
      application:
       name: microservicecloud-dept                      # 对外暴露的微服务的名字(很重要)
      datasource:
       type: com.alibaba.druid.pool.DruidDataSource      # 当前数据源操作类型
       driver-class-name: org.gjt.mm.mysql.Driver        # mysql驱动包
       url: jdbc:mysql://localhost:3306/cloudDB01        # 数据库名称
       username: root
       password: hannong
       dbcp2:
        min-idle: 5                                      # 数据库连接池的最小维持连接数 
        initial-size: 5                                  # 初始化连接数
        max-total: 5                                     # 最大连接数
        max-wait-millis: 200                             # 等待连接获取的最大超时时间
        
    eureka:
       client:   #客户端注册进eureka服务列表内
        service-url:
          defaultZone: http://localhost:7001/eureka      #去注册中心的地址

**修改microservicecloud-provider-dept-8001项目的DeptProvider8001\_App启动类(添加一个注解@EnableEurekaClient)**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 8]

package com.yt.springcloud;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    
    @SpringBootApplication
    @EnableEurekaClient//本服务启动后会自动注册进eureka服务中
    public class DeptProvider8001_App {
    	
    	public static void main(String[] args) {
    		SpringApplication.run(DeptProvider8001_App.class, args);
    	}
    
    }

**先启动microservicecloud-provider-dept-7001的启动类,再启动microservicecloud-provider-dept-8001的启动类**  
**访问路径:[http://localhost:7001/][http_localhost_7001]**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 9]  
**主机名称:服务名称修改**  
**修改microservicecloud-provider-dept-8001项目工程的application.yml**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 10]

**修改之后,再重新启动microservicecloud-provider-dept-7001的启动类,再启动microservicecloud-provider-dept-8001的启动类**  
**修改前**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 11]  
**修改后**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 12]  
**访问信息有IP信息提示**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 13]

**修改前**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 14]  
**修改后**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 15]  
**微服务info内容详细信息**  
**1.修改microservicecloud-provider-dept-8001项目工程的pom.xml文件**![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 16]

<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>com.yt.springcloud</groupId>
        <artifactId>microservicecloud</artifactId>
        <version>0.0.1-SNAPSHOT</version>
      </parent>
      
      <artifactId>microservicecloud-provider-dept-8001</artifactId>
      
      <dependencies>
      
      
      	<dependency>
      		<groupId>com.yt.springcloud</groupId> 
      		<artifactId>microservicecloud-api</artifactId>
      		<version>${project.version}</version>
      	</dependency>
      	
      	 
      	<dependency>
      		<groupId>junit</groupId>
      		<artifactId>junit</artifactId>
      	</dependency>
      	
      	 
      	<dependency>
      		<groupId>mysql</groupId>
      		<artifactId>mysql-connector-java</artifactId>
      	</dependency>
      	
      	 
      	<dependency>
      		<groupId>com.alibaba</groupId>
      		<artifactId>druid</artifactId>
      	</dependency>
      	
      	 
      	<dependency>
      		<groupId>org.mybatis.spring.boot</groupId>
      		<artifactId>mybatis-spring-boot-starter</artifactId>
      	</dependency>
      	
      	 
      	<dependency>
      		<groupId>org.springframework.boot</groupId>
      		<artifactId>spring-boot-starter-jetty</artifactId>
      	</dependency>
      	
      	 
      	<dependency>
      		<groupId>org.springframework.boot</groupId>
      		<artifactId>spring-boot-starter-web</artifactId>
      	</dependency>
      	
      	 
      	<dependency>
      		<groupId>org.springframework.boot</groupId>
      		<artifactId>spring-boot-starter-test</artifactId>
      	</dependency>
      	
      	
      	 
      	<dependency>
      		<groupId>org.springframework</groupId>
      		<artifactId>springloaded</artifactId>
      	</dependency>
      	<dependency>
      		<groupId>org.springframework.boot</groupId>
      		<artifactId>spring-boot-devtools</artifactId>
      	</dependency>
      	
      	 
      	<dependency>
      		<groupId>org.springframework.cloud</groupId>
      		<artifactId>spring-cloud-starter-eureka</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-actuator</artifactId>
      	</dependency>
      	
      </dependencies>
      
    </project>

**2.修改总父工程microservicecloud的pom.xml添加构建build信息**  
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<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>com.yt.springcloud</groupId>
      <artifactId>microservicecloud</artifactId>
      <version>0.0.1-SNAPSHOT</version>
      <packaging>pom</packaging>
      
     <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>
     	<junit.version>4.12</junit.version>
     	<log4j.version>1.2.17</log4j.version>
     	<lombok.version>1.16.18</lombok.version>
     </properties>
     
     <dependencyManagement>
     	<dependencies>
     		
     		
     		 <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Dalston.SR1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            
            
     		 <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>1.5.9.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            
            
     		 <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.0.4</version>
            </dependency>
            
            
     		 <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>1.1.8</version>
            </dependency>
            
             
     		 <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>1.3.0</version>
            </dependency>
            
             
     		 <dependency>
                <groupId>ch.qos.logback</groupId>
                <artifactId>logback-core</artifactId>
                <version>1.2.3</version>
            </dependency>
            
            
     		 <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>${junit.version}</version>
                <scope>test</scope>
            </dependency>
            
             
     		 <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>${log4j.version}</version>
            </dependency>
            
     	</dependencies>
     
     </dependencyManagement>
     
     <build>
     	<finalName>microservicecloud</finalName>
     	<resources>
     		<resource>
     			<directory>src/main/resources</directory>
     			<filtering>true</filtering>
     		</resource>
     	</resources>
     	<plugins>
     		<plugin>
     			<groupId>org.apache.maven.plugins</groupId>
     			<artifactId>maven-resources-plugin</artifactId>
     			<configuration>
     				<delimiters>
     					<delimit>$</delimit>
     				</delimiters>
     			</configuration>
     		</plugin>
     	</plugins>
     </build>
      
      
     <modules>
     	<module>microservicecloud-api</module>
     	<module>microservicecloud-provider-dept-8001</module>
     	<module>microservicecloud-consumer-dept-80</module>
     	<module>microservicecloud-provider-dept-7001</module>
     	<module>demo</module>
     	<module>demp</module>
     </modules>
    </project>

**3.修改microservicecloud-provider-dept-8001项目工程的application文件**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 18]

**修改前**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 19]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 20]  
**修改后**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 21]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 22]  
**修改后**  
对于注册进eureka里面的微服务,可以通过服务发现来活的该服务的信息;  
**修改microservicecloud-provider-dept-8001工程的DeptController**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 23]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 24]

package com.yt.springcloud.controller;
    
    import java.util.List;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.cloud.client.ServiceInstance;
    import org.springframework.cloud.client.discovery.DiscoveryClient;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.RequestBody;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.RestController;
    
    import com.yt.springcloud.entity.Dept;
    import com.yt.springcloud.service.impl.DeptService;
    
    @RestController//整合了responceBody+Controller
    public class DeptController {
    	
    	@Autowired
    	private DeptService deptService;
    	
    	/**
    	 * 当前微服务的信息
    	 */
    	@Autowired
    	private DiscoveryClient client;
    	
    	@RequestMapping(value="/dept/add",method=RequestMethod.POST)
    	public boolean add(@RequestBody Dept dept) {
    		return deptService.add(dept);
    	}
    	
    	@RequestMapping(value="/dept/get/{id}",method=RequestMethod.GET)
    	public Dept get(@PathVariable("id") Long id) {
    		return deptService.get(id);
    	}
    	
    	@RequestMapping(value="/dept/list",method=RequestMethod.GET)
    	public List<Dept> list() {
    		return deptService.list();
    	}
    	
    	@RequestMapping(value="/dept/discovery",method=RequestMethod.GET)
    	public Object discovery() {
    		
    		List<String> list=client.getServices();//得到所有的微服务
    		System.err.println("***********"+list);
    		
    		List<ServiceInstance> serList=client.getInstances("MICROSERVICECLOUD-DEPT");//找一个叫做部门的微服务
    		for(ServiceInstance element:serList) {//然后输出这个微服务的相关信息(info信息的描述)
    			System.err.println(element.getServiceId()+"\t"+element.getHost()+"\t"+element.getPort()+"\t"+element.getUri());
    		}
    		
    		return this.client;
    	}
    	
    	
    	
    }

**DeptProvider8001\_App主启动类(添加一个注解@EnableDiscoveryClient)**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 25]

package com.yt.springcloud;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
    import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    
    @SpringBootApplication
    @EnableEurekaClient//本服务启动后会自动注册进eureka服务中
    @EnableDiscoveryClient//服务发现
    public class DeptProvider8001_App {
    	
    	public static void main(String[] args) {
    		SpringApplication.run(DeptProvider8001_App.class, args);
    	}
    
    }

**自测调用是否成功(先启动7001项目工程,再启动8001项目工程,测试路径:[http://localhost:8001/dept/discovery][http_localhost_8001_dept_discovery])**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 26]  
\*\*修改microservicecloud-consumer-dept-80工程的DeptController\_Consumer(添加一个调用提供者的信息方法) \*\*  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 27]

package com.yt.springcloud.controller;
    
    import java.util.List;
    
    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 org.springframework.web.client.RestTemplate;
    
    import com.yt.springcloud.entity.Dept;
    
    @RestController
    public class DeptController_consumer {
    	
    	private static final String REST_URL_PREFIX="http://localhost:8001";
    	
    	/**
    	 * 使用RestTemplate访问restful接口非常的简单粗暴无脑
    	 * (url,requestMap,ResponseBean.class)这三个参数分别代表
    	 * REST请求地址,请求参数,HTTP响应转换被转换成的对象类型
    	 */
    	@Autowired
    	private RestTemplate restTemplate;
    	
    	@RequestMapping(value="/consumer/dept/add")
    	public boolean add(Dept dept) {
    		return restTemplate.postForObject(REST_URL_PREFIX+"/dept/add", dept, boolean.class);
    	}
    	
    	@RequestMapping(value="/consumer/dept/get/{id}")
    	public Dept get(@PathVariable("id") Long id) {
    		return restTemplate.getForObject(REST_URL_PREFIX+"/dept/get/"+id, Dept.class);
    	}
    	
    	@SuppressWarnings("unchecked")
    	@RequestMapping(value="/consumer/dept/list")
    	public List<Dept> list(Dept dept) {
    		return restTemplate.getForObject(REST_URL_PREFIX+"/dept/list", List.class);
    	}
    	
    	@RequestMapping(value="/consumer/dept/discovery")
    	public Object discovery(Dept dept) {
    		return restTemplate.getForObject(REST_URL_PREFIX+"/dept/discovery", Object.class);
    	}
    
    }

**启动80,7001,8001等三个项目工程**  
**消费者访问路径:[http://localhost/consumer/dept/discovery][http_localhost_consumer_dept_discovery]**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 28]

## 总结 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1YW50aW5nXw_size_16_color_FFFFFF_t_70 29]

翻译于尚硅谷周阳老师:[https://www.bilibili.com/video/av22613028?from=search&seid=11377756339718254280][https_www.bilibili.com_video_av22613028_from_search_seid_11377756339718254280]

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[http_localhost_7001]: http://localhost:7001/
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[http_localhost_8001_dept_discovery]: http://localhost:8001/dept/discovery
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[http_localhost_consumer_dept_discovery]: http://localhost/consumer/dept/discovery
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[https_www.bilibili.com_video_av22613028_from_search_seid_11377756339718254280]: https://www.bilibili.com/video/av22613028?from=search&seid=11377756339718254280