springcloud--服务发现服务

1. 服务发现服务(microservice-eureka-server)
2. 用户服务提供者(microservice-provider-user)
3. 电影服务消费者(microservice-consumer-movie)

 

工具及软件

• JDK：建议使用 JDK 1.8
• Spring Boot：实验使用 Spring Boot 2.0.7.RELEASE 版本。
• Spring Cloud：实验使用 Spring Cloud Finchley.SR2 版本。
• Maven：实验使用 Maven 3.6.0 构建项目

 

Failed to execute goal org.apache.maven.plugins:maven-archetype-plugin:3.2.0:generate (default-cli) on project standalone-pom: The desired archetype does not exist (org.springframework.boot:spring-boot-starter-parent:2.0.7.RELEASE)

 

    <dependencies>

        <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-archetype-plugin -->
        <dependency>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-archetype-plugin</artifactId>
            <version>3.2.0</version>
        </dependency>

    </dependencies>

　　

Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!

 

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

　　

JAR will be empty - no content was marked for inclusion!

 

springbootapplication注解 不能导入

 

File—>Settings(Ctrl+Alt+S)—>Build—>Build Tools—>Maven

是不是idea的maven仓库和系统配置的maven仓库是不是不相同

pom.xml

<?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>com.lzj1234</groupId>
    <artifactId>findservice</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>

        <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-archetype-plugin -->
        <dependency>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-archetype-plugin</artifactId>
            <version>3.2.0</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-netflix-eureka-server -->
        <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-netflix-eureka-server -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
            <version>3.0.1</version>
        </dependency>



        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <version>2.4.2</version>
        </dependency>


    </dependencies>

    <!-- 引入spring cloud的依赖，不能少，主要用来管理Spring Cloud生态各组件的版本 -->
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Finchley.SR2</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.4.2</version>
            </plugin>
        </plugins>
    </build>


</project>

　　

 

App.java

package com.lzj1234;


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

@SpringBootApplication
@EnableEurekaServer
public class App {

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

　　

resources/application.yml 

server:
  port: 8080
eureka:
  instance:
    hostname: localhost
  client:
    registerWithEureka: false
    fetchRegistry: false
    serviceUrl:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

　　

registerWithEureka: 表示是否需要将自身也加入 Eureka Server 中，默认为 true。当前实例本身就是 Eureka Server，故设置为 false。
fetchRegistry：是否需要从其他 Eureka Server 获取注册信息，默认为 true。本次实验采用的是一个单点 Server，无需同步其他 Server 的注册信息，故设置为 false。
serviceUrl.defaultZone：当前 Eureka Server 的交互地址，多个地址可用 ',' 号隔开。
若有需要自定义配置，如搭建高可用的 Eureka Server，可查看官方文档：https://cloud.spring.io/spring-cloud-netflix/multi/multi_spring-cloud-eureka-server.html

　　

mvn spring-boot:run

 

[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.4.2:run (default-cli) on project findservice: Application finished with exit code: 1 -> [Help 1]
[ERROR]

2021-02-19 14:22:20.229 ERROR 12132 --- [ main] o.s.b.web.embedded.tomcat.TomcatStarter : Error starting Tomcat context. Exception: org.springframework.beans.factory.BeanC
reationException. Message: Error creating bean with name 'formContentFilter' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguratio
n.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.web.
servlet.filter.OrderedFormContentFilter]: Factory method 'formContentFilter' threw exception; nested exception is org.springframework.beans.BeanInstantiationException: Failed to inst
antiate [com.fasterxml.jackson.datatype.jsr310.JavaTimeModule]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: com/fasterxml/jackson/datatype/jsr310
/ser/ZoneIdSerializer

org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embed
ded Tomcat

 

@EnableAutoConfiguration
@SpringBootConfiguration

o.s.b.web.embedded.tomcat.TomcatStarter : Error starting Tomcat context. Exception: org.springframework.beans.factory.BeanCre
ationException. Message: Error creating bean with name 'formContentFilter' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration.cl
ass]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.web.servle
t.filter.OrderedFormContentFilter]: Factory method 'formContentFilter' threw exception; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate
[com.fasterxml.jackson.datatype.jsr310.JavaTimeModule]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: com/fasterxml/jackson/datatype/jsr310/ser/ZoneI
dSerializer

 

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <version>2.4.2</version>
</dependency>

 

java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [NonLoginAuthenticator[StandardEngine[Tomcat].StandardHost[localhost].TomcatE
mbeddedContext[]]]

 

The class hierarchy was loaded from the following locations:

javax.servlet.ServletContext: file:/D:/kaifa/reposmaven/javax/servlet/servlet-api/2.5/servlet-api-2.5.jar

Action:

Correct the classpath of your application so that it contains a single, compatible version of javax.servlet.ServletContext

删除jar包

 

 

 

The method's class, javax.servlet.ServletContext, is available from the following locations:

jar:file:/D:/kaifa/reposmaven/javax/servlet/servlet-api/2.5/servlet-api-2.5.jar!/javax/servlet/ServletContext.class
jar:file:/D:/kaifa/reposmaven/org/apache/tomcat/embed/tomcat-embed-core/9.0.41/tomcat-embed-core-9.0.41.jar!/javax/servlet/ServletContext.class

The class hierarchy was loaded from the following locations:

javax.servlet.ServletContext: file:/D:/kaifa/reposmaven/javax/servlet/servlet-api/2.5/servlet-api-2.5.jar

Action:

Correct the classpath of your application so that it contains a single, compatible version of javax.servlet.ServletContext

[INF

 

Description:

An attempt was made to call a method that does not exist. The attempt was made from the following location:

org.springframework.context.support.GenericApplicationContext.setApplicationStartup(GenericApplicationContext.java:165)

The following method did not exist:

org.springframework.beans.factory.support.DefaultListableBeanFactory.setApplicationStartup(Lorg/springframework/core/metrics/ApplicationStartup;)V

The method's class, org.springframework.beans.factory.support.DefaultListableBeanFactory, is available from the following locations:

jar:file:/D:/kaifa/reposmaven/org/springframework/spring-beans/5.2.1.RELEASE/spring-beans-5.2.1.RELEASE.jar!/org/springframework/beans/factory/support/DefaultListableBeanFactory.cl
ass

The class hierarchy was loaded from the following locations:

org.springframework.beans.factory.support.DefaultListableBeanFactory: file:/D:/kaifa/reposmaven/org/springframework/spring-beans/5.2.1.RELEASE/spring-beans-5.2.1.RELEASE.jar
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory: file:/D:/kaifa/reposmaven/org/springframework/spring-beans/5.2.1.RELEASE/spring-beans-5.2.1.RELEASE.ja
r
org.springframework.beans.factory.support.AbstractBeanFactory: file:/D:/kaifa/reposmaven/org/springframework/spring-beans/5.2.1.RELEASE/spring-beans-5.2.1.RELEASE.jar
org.springframework.beans.factory.support.FactoryBeanRegistrySupport: file:/D:/kaifa/reposmaven/org/springframework/spring-beans/5.2.1.RELEASE/spring-beans-5.2.1.RELEASE.jar
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry: file:/D:/kaifa/reposmaven/org/springframework/spring-beans/5.2.1.RELEASE/spring-beans-5.2.1.RELEASE.jar
org.springframework.core.SimpleAliasRegistry: file:/D:/kaifa/reposmaven/org/springframework/spring-core/5.3.3/spring-core-5.3.3.jar

Action:

Correct the classpath of your application so that it contains a single, compatible version of org.springframework.beans.factory.support.DefaultListableBeanFactory

 

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
    <version>2.2.0.RELEASE</version>
</dependency>

应该是这个依赖包的问题
依赖冲突
可以使用parent标签

　　pom.xml

<?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>2.0.7.RELEASE</version>
        <relativePath/>
    </parent>
    <groupId>com.lzj1234</groupId>
    <artifactId>findservice</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <!-- 引入 Netflix eureka server 依赖 -->
        <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>

    <!-- 引入spring cloud的依赖，不能少，主要用来管理Spring Cloud生态各组件的版本 -->
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Finchley.SR2</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <!-- 添加spring-boot的maven插件，不能少，打jar包时得用 -->
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>
        </plugins>
    </build>

</project>

　　

运行：

mvn spring-boot:run

 

 

 

 

注册微服务至 Eureka Server

更改服务提供者

 添加依赖

pom.xml

<?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>2.0.7.RELEASE</version>
        <relativePath/>
    </parent>
    <groupId>com.lzj1234</groupId>
    <artifactId>microservice-provider-user</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>


        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-jpa -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
<!--            <version>2.4.2</version>-->
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
<!--            <version>2.4.2</version>-->
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
<!--            <version>2.4.2</version>-->
        </dependency>
        <!-- 引入H2数据库，一种内嵌的数据库，语法类似MySQL -->
        <!-- https://mvnrepository.com/artifact/com.h2database/h2 -->
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <version>1.4.200</version>
<!--            <scope>test</scope>-->
        </dependency>
        <!-- 新增依赖 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.18</version>
            <scope>provided</scope>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-test -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
<!--            <version>2.4.2</version>-->
            <scope>test</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-clean-plugin -->
        <dependency>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-clean-plugin</artifactId>
            <version>2.5</version>
        </dependency>

    </dependencies>

    <!-- 引入spring cloud的依赖，不能少，主要用来管理Spring Cloud生态各组件的版本 -->
    <dependencyManagement>
        <dependencies>
            <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-dependencies -->
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Finchley.SR2</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
        </dependencies>
    </dependencyManagement>

    <build>

        <plugins>
            <!-- 添加spring-boot的maven插件，不能少，打jar包时得用 -->
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
<!--                <version>2.4.2</version>-->
            </plugin>
            <plugin>

                <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-compiler-plugin -->

                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.5.1</version>


                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>

    </build>
</project>

　　

添加注解

app.java

package com.src;

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

import java.math.BigDecimal;
import java.util.stream.Stream;

@SpringBootApplication
@EnableEurekaClient
public class App {

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

    @Bean
    ApplicationRunner init(UserRepository repository){
        return args -> {
            User user1 = new User(1L, "account1", "张三", 20, new BigDecimal(100.00));
            User user2 = new User(2L, "account2", "李四", 28, new BigDecimal(180.00));
            User user3 = new User(3L, "account3", "王五", 32, new BigDecimal(280.00));
            Stream.of(user1, user2, user3)
                    .forEach(repository::save);
        };
    }
}

　　

 

配置文件

server:
  # 指定Tomcat端口
  port: 8000
spring:
  application:
    # 给这个服务取名叫做：microservice-provider-user
    name: microservice-provider-user
  jpa:
    # 让hibernate打印执行的SQL
    show-sql: true
logging:
  level:
    root: INFO
    # 配置日志级别，让hibernate打印出执行的SQL参数
    org.hibernate: INFO
    org.hibernate.type.descriptor.sql.BasicBinder: TRACE
    org.hibernate.type.descriptor.sql.BasicExtractor: TRACE

#management:
#  endpoint:
#    health:
#      # 是否展示健康检查详情
#      show-details: always

management:
  endpoints:
    web:
      exposure:
        include: '*'

    health:
      # 是否展示健康检查详情
      show-details: always

# 新增配置
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8080/eureka/
  instance:
    prefer-ip-address: true

　　

简单介绍一下以上配置：

1. eureka.client.serviceUrl.defaultZone：表示 Eureka Server 的交互地址，此前已经在 Eureka Server 中配置该 defaultZone。
2. eureka.instance.prefer-ip-address：表示将自身服务器的 IP 地址注册到 Eureka Server 中。如果不配置或者设置为 false，则将会将服务器的 hostname 注册到 Eureka Server 中。

运行

mvn spring-boot:run

 

更改消费者

pom.xml

<?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>com.shiyanlou</groupId>
    <artifactId>microservice-consumer-movie</artifactId>
    <version>1.0-SNAPSHOT</version>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.7.RELEASE</version>
        <relativePath/>
    </parent>
    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-jpa -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
<!--            <version>2.4.2</version>-->
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
<!--            <version>2.4.2</version>-->
        </dependency>

        <!-- 引入H2数据库，一种内嵌的数据库，语法类似MySQL -->
        <!-- https://mvnrepository.com/artifact/com.h2database/h2 -->
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <version>1.4.200</version>
            <!--            <scope>test</scope>-->
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.18</version>
            <scope>provided</scope>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-test -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
<!--            <version>2.4.2</version>-->
            <scope>test</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-clean-plugin -->
        <dependency>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-clean-plugin</artifactId>
            <version>2.5</version>
        </dependency>
        <!-- 新增依赖 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
    </dependencies>

    <!-- 引入spring cloud的依赖，不能少，主要用来管理Spring Cloud生态各组件的版本 -->
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Finchley.SR2</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
<!--                <version>2.4.2</version>-->
            </plugin>
            <plugin>

                <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-compiler-plugin -->

                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.5.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>


</project>

　　

app.java

package com.shiyanlou;

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


@SpringBootApplication
@EnableEurekaClient
public class App {

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

    @Bean
    public RestTemplate restTemplate(){
        return new RestTemplate();
    }
}

　　配置文件

server:
  port: 8010
spring:
  application:
    name: microservice-consumer-movie
logging:
  level:
    root: INFO
    # 配置日志级别，让hibernate打印出执行的SQL参数
    org.hibernate: INFO
    org.hibernate.type.descriptor.sql.BasicBinder: TRACE
    org.hibernate.type.descriptor.sql.BasicExtractor: TRACE

# 新增配置
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8080/eureka/
  instance:
    prefer-ip-address: true

　　

 

mvn spring-boot:run 

 

2021-02-19 17:40:26.655  INFO 5252 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_MICROSERVICE-CONSUMER-MOVIE/DESKTOP-SRVQTV7:microservice-consumer-movie:8010: registering service...
2021-02-19 17:40:26.701  INFO 5252 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8010 (http) with context path ''
2021-02-19 17:40:26.702  INFO 5252 --- [           main] .s.c.n.e.s.EurekaAutoServiceRegistration : Updating port to 8010
2021-02-19 17:40:26.703  INFO 5252 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_MICROSERVICE-CONSUMER-MOVIE/DESKTOP-SRVQTV7:microservice-consumer-movie:8010 - registration status: 204
2021-02-19 17:40:26.705  INFO 5252 --- [           main] com.shiyanlou.App                        : Started App in 12.194 seconds (JVM running for 14.033)

　　

 

查看注册结果

 

 

第一是学会如何创建一个 Eureka Server，第二是将微服务注册到该 Server 上。但是仍然没有解决一个问题，那就是服务消费者请求服务提供者的时候，地址硬编码问题