springcloud微服务-项目搭建

小灰灰 2022-05-08 13:14 427阅读 0赞

前言：

  1.  乐优商城这个视频还可以，于是拿来练练手，我对着视频搭环境一直在service服务模块卡住了，注册中心和网关可以启动，服务模块却一直启动不了，报各种奇怪的错，网上也没有什么好的解决办法，于是我就自己改动了下，不完全按视频的，于是搭建成功了，值得注意的是springcloud的版本不同，配置的也不太一样的。

项目结构：

70

1.创建父工程：

父工程的pom.xml:

（ps:此处我的springcloud的版本是Finchley.SR1，并不是传智视频上的Finchley.RC1，我刚开始用的是RC1，结果发现在service模块的启动一直会报错，不知道有没有人遇到跟我一样的情况。）

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xmlns="http://maven.apache.org/POM/4.0.0"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <modelVersion>4.0.0</modelVersion>
  7.     <groupId>com.leyou.parent</groupId>
  8.     <artifactId>leyou</artifactId>
  9.     <packaging>pom</packaging>
  10.     <version>1.0.0-SNAPSHOT</version>
  11.     <modules>
  12.         <module>ly-registry</module>
  13.         <module>ly-api-gateway</module>
  14.         <module>ly-item</module>
  15.     </modules>
  16.     <parent>
  17.         <groupId>org.springframework.boot</groupId>
  18.         <artifactId>spring-boot-starter-parent</artifactId>
  19.         <version>2.0.2.RELEASE</version>
  20.         <relativePath/> <!-- lookup parent from repository -->
  21.     </parent>
  23.     <properties>
  24.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  25.         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  26.         <java.version>1.8</java.version>
  27.         <spring-cloud.version>Finchley.SR1</spring-cloud.version>
  28.         <mybatis.starter.version>1.3.2</mybatis.starter.version>
  29.         <mapper.starter.version>2.0.2</mapper.starter.version>
  30.         <druid.starter.version>1.1.9</druid.starter.version>
  31.         <mysql.version>5.1.32</mysql.version>
  32.         <pageHelper.starter.version>1.2.3</pageHelper.starter.version>
  33.         <leyou.latest.version>1.0.0-SNAPSHOT</leyou.latest.version>
  34.         <fastDFS.client.version>1.26.1-RELEASE</fastDFS.client.version>
  35.     </properties>
  38.     <dependencyManagement>
  39.         <dependencies>
  40.             <dependency>
  41.                 <groupId>org.springframework.cloud</groupId>
  42.                 <artifactId>spring-cloud-dependencies</artifactId>
  43.                 <version>${spring-cloud.version}</version>
  44.                 <type>pom</type>
  45.                 <scope>import</scope>
  46.             </dependency>
  47.         </dependencies>
  48.     </dependencyManagement>
  49.     <dependencies>
  50.         <dependency>
  51.             <groupId>org.springframework.cloud</groupId>
  52.             <artifactId>spring-cloud-starter-config</artifactId>
  53.         </dependency>
  54.         <dependency>
  55.             <groupId>org.springframework.cloud</groupId>
  56.             <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
  57.         </dependency>
  58.     <!-- mybatis启动器 -->
  59.             <dependency>
  60.                 <groupId>org.mybatis.spring.boot</groupId>
  61.                 <artifactId>mybatis-spring-boot-starter</artifactId>
  62.                 <version>${mybatis.starter.version}</version>
  63.             </dependency>
  64.             <!-- 通用Mapper启动器 -->
  65.             <dependency>
  66.                 <groupId>tk.mybatis</groupId>
  67.                 <artifactId>mapper-spring-boot-starter</artifactId>
  68.                 <version>${mapper.starter.version}</version>
  69.             </dependency>
  70.             <!-- 分页助手启动器 -->
  71.             <dependency>
  72.                 <groupId>com.github.pagehelper</groupId>
  73.                 <artifactId>pagehelper-spring-boot-starter</artifactId>
  74.                 <version>${pageHelper.starter.version}</version>
  75.             </dependency>
  76.             <!-- mysql驱动 -->
  77.             <dependency>
  78.                 <groupId>mysql</groupId>
  79.                 <artifactId>mysql-connector-java</artifactId>
  80.                 <version>${mysql.version}</version>
  81.             </dependency>
  82.             <!--FastDFS客户端-->
  83.             <dependency>
  84.                 <groupId>com.github.tobato</groupId>
  85.                 <artifactId>fastdfs-client</artifactId>
  86.                 <version>${fastDFS.client.version}</version>
  87.             </dependency>
  88.         </dependencies>
  90.     <build>
  91.     <plugins>
  92.         <plugin>
  93.             <groupId>org.springframework.boot</groupId>
  94.             <artifactId>spring-boot-maven-plugin</artifactId>
  95.         </plugin>
  96.     </plugins>
  97.     </build>
  99.     <repositories>
  100.     <repository>
  101.         <id>spring-milestones</id>
  102.         <name>Spring Milestones</name>
  103.         <url>https://repo.spring.io/milestone</url>
  104.         <snapshots>
  105.             <enabled>false</enabled>
  106.         </snapshots>
  107.     </repository>
  108.     </repositories>
  110. </project>

2.创建 Eureka注册中心

模块结构：

70 1

pom.xml:

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0"
  3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <parent>
  6.         <artifactId>leyou</artifactId>
  7.         <groupId>com.leyou.parent</groupId>
  8.         <version>1.0.0-SNAPSHOT</version>
  9.     </parent>
  10.     <modelVersion>4.0.0</modelVersion>
  12.     <groupId>com.leyou.common</groupId>
  13.     <artifactId>ly-registry</artifactId>
  14.     <version>1.0.0-SNAPSHOT</version>
  16.     <dependencies>
  17.         <dependency>
  18.             <groupId>org.springframework.cloud</groupId>
  19.             <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
  20.         </dependency>
  21.     </dependencies>
  23. </project>

创建启动类：LyRegistry

  1. package com.leyou;
  3. import org.springframework.boot.SpringApplication;
  4. import org.springframework.boot.autoconfigure.SpringBootApplication;
  5. import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
  7. /**
  8.  * @author: Lucifer
  9.  * @create: 2018-10-12 01:14
  10.  * @description:
  11.  **/
  12. @SpringBootApplication
  13. @EnableEurekaServer
  14. public class LyRegistry {
  15.      public static void main(String[] args) {
  16.          SpringApplication.run(LyRegistry.class, args);
  17.      }
  18. }

application.yml：

ps:

这里的MySQL连接信息的url建议后面加上：useUnicode=true&characterEncoding=utf8,完整的:jdbc:mysql://localhost:3306/heima?useUnicode=true&characterEncoding=utf8,如果不加的话，后面你会遇到坑的，在数据库执行增加的时候。

  1. server:
  2.   port: 10086
  3. spring:
  4.   application:
  5.     name: ly-registry
  6.   datasource:
  7.     url: jdbc:mysql://localhost:3306/heima?useUnicode=true&characterEncoding=utf8
  8.     username: root
  9.     password: 123456
  10.     hikari:
  11.       maximum-pool-size: 30
  12.       minimum-idle: 10
  13. eureka:
  14.   client:
  15.     fetchRegistry: false
  16.     registerWithEureka: false
  17.     serviceUrl:
  18.       defaultZone: http://127.0.0.1:${server.port}/eureka
  19.   server:
  20.     enableSelfPreservation: false # 关闭自我保护
  21.     evictionIntervalTimerInMs: 5000 # 每隔5秒进行一次服务列表清理

run启动类，如图：成功启动Eureka注册中心

70 2

3.创建Zuul网关

70 3

pom.xml:

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0"
  3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <parent>
  6.         <artifactId>leyou</artifactId>
  7.         <groupId>com.leyou.parent</groupId>
  8.         <version>1.0.0-SNAPSHOT</version>
  9.     </parent>
  10.     <modelVersion>4.0.0</modelVersion>
  12.     <groupId>com.leyou.common</groupId>
  13.     <artifactId>ly-api-gateway</artifactId>
  14.     <version>1.0.0-SNAPSHOT</version>
  16.     <dependencies>
  17.         <dependency>
  18.             <groupId>org.springframework.cloud</groupId>
  19.             <artifactId>spring-cloud-starter-netflix-zuul</artifactId>
  20.         </dependency>
  21.         <dependency>
  22.             <groupId>org.springframework.cloud</groupId>
  23.             <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
  24.         </dependency>
  25.         <!--是springboot提供的微服务检测接口，默认对外提供几个接口：/info-->
  26.         <dependency>
  27.             <groupId>org.springframework.boot</groupId>
  28.             <artifactId>spring-boot-starter-actuator</artifactId>
  29.         </dependency>
  30.     </dependencies>
  31. </project>

启动类：LyApiGateway

  1. package com.leyou;
  3. import org.springframework.boot.SpringApplication;
  4. import org.springframework.boot.autoconfigure.SpringBootApplication;
  5. import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
  6. import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
  8. /**
  9.  * @author: Lucifer
  10.  * @create: 2018-10-12 01:32
  11.  * @description:
  12.  **/
  13. @SpringBootApplication
  14. @EnableDiscoveryClient
  15. @EnableZuulProxy
  16. public class LyApiGateway {
  17.     public static void main(String[] args) {
  18.         SpringApplication.run(LyApiGateway.class, args);
  19.     }
  20. }

网关的配置文件：application.yml: 

  1. server:
  2.   port: 10010
  3. spring:
  4.   application:
  5.     name: api-gateway
  6.   datasource:
  7.     url: jdbc:mysql://localhost:3306/heima
  8.     username: root
  9.     password: 123456
  10.     hikari:
  11.       maximum-pool-size: 30
  12.       minimum-idle: 10
  13. eureka:
  14.   client:
  15.     serviceUrl:
  16.       defaultZone: http://127.0.0.1:10086/eureka
  17.     registryFetchIntervalSeconds: 5
  18.   instance:
  19.     preferIpAddress: true
  20.     ipAddress: 127.0.0.1
  21.     instanceId: ${spring.application.name}:${server.port}
  22. zuul:
  23.   prefix: /api # 添加路由前缀
  24.   retryable: true
  25. ribbon:
  26.   ConnectTimeout: 250 # 连接超时时间(ms)
  27.   ReadTimeout: 2000 # 通信超时时间(ms)
  28.   OkToRetryOnAllOperations: true # 是否对所有操作重试
  29.   MaxAutoRetriesNextServer: 1 # 同一服务不同实例的重试次数
  30.   MaxAutoRetries: 1 # 同一实例的重试次数
  31. hystrix:
  32.   command:
  33.     default:
  34.       execution:
  35.         isolation:
  36.           thread:
  37.             timeoutInMillisecond: 10000 # 熔断超时时长：10000ms

run启动类：如图：成功运行

70 4

4.创建商品微服务

在ly-item中创建两个子工程：

  • ly-item-interface：主要是对外暴露的接口及相关实体类
  • ly-item-service：所有业务逻辑及内部使用接口

70 5

pom.xml: 

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0"
  3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <parent>
  6.         <artifactId>ly-item</artifactId>
  7.         <groupId>com.leyou.service</groupId>
  8.         <version>1.0.0-SNAPSHOT</version>
  9.     </parent>
  10.     <modelVersion>4.0.0</modelVersion>
  12.     <groupId>com.leyou.service</groupId>
  13.     <artifactId>ly-item-service</artifactId>
  14.     <version>1.0.0-SNAPSHOT</version>
  16.     <dependencies>
  17.         <!--Eureka客户端-->
  18.         <dependency>
  19.             <groupId>org.springframework.cloud</groupId>
  20.             <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
  21.         </dependency>
  22.         <!--web启动器-->
  23.         <dependency>
  24.             <groupId>org.springframework.boot</groupId>
  25.             <artifactId>spring-boot-starter-web</artifactId>
  26.         </dependency>
  27.         <!-- mybatis启动器 -->
  28.         <dependency>
  29.             <groupId>org.mybatis.spring.boot</groupId>
  30.             <artifactId>mybatis-spring-boot-starter</artifactId>
  31.             <version>${mybatis.starter.version}</version>
  32.         </dependency>
  33.         <!-- 通用Mapper启动器 -->
  34.         <dependency>
  35.             <groupId>tk.mybatis</groupId>
  36.             <artifactId>mapper-spring-boot-starter</artifactId>
  37.             <version>${mapper.starter.version}</version>
  38.         </dependency>
  39.         <!-- 分页助手启动器 -->
  40.         <dependency>
  41.             <groupId>com.github.pagehelper</groupId>
  42.             <artifactId>pagehelper-spring-boot-starter</artifactId>
  43.             <version>${pageHelper.starter.version}</version>
  44.         </dependency>
  45.         <!-- mysql驱动 -->
  46.         <dependency>
  47.             <groupId>mysql</groupId>
  48.             <artifactId>mysql-connector-java</artifactId>
  49.             <version>${mysql.version}</version>
  50.         </dependency>
  51.         <dependency>
  52.             <groupId>com.leyou.service</groupId>
  53.             <artifactId>ly-item-interface</artifactId>
  54.             <version>${leyou.latest.version}</version>
  55.         </dependency>
  56.         <dependency>
  57.             <groupId>org.springframework.boot</groupId>
  58.             <artifactId>spring-boot-starter-actuator</artifactId>
  59.         </dependency>
  60.     </dependencies>
  61. </project>

启动类：LyItemService

  1. package com.leyou;
  3. import org.springframework.boot.SpringApplication;
  4. import org.springframework.boot.autoconfigure.SpringBootApplication;
  5. import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
  7. /**
  8.  * @author: Lucifer
  9.  * @create: 2018-10-12 01:38
  10.  * @description:
  11.  **/
  12. @SpringBootApplication
  13. @EnableDiscoveryClient
  14. public class LyItemService {
  15.     public static void main(String[] args) {
  16.         SpringApplication.run(LyItemService.class, args);
  17.     }
  18. }

配置文件：application.yml: 

  1. server:
  2.   port: 8081
  3. spring:
  4.   application:
  5.     name: item-service
  6.   datasource:
  7.     url: jdbc:mysql://localhost:3306/heima
  8.     username: root
  9.     password: 123456
  10.     hikari:
  11.       maximum-pool-size: 30
  12.       minimum-idle: 10
  13. eureka:
  14.   client:
  15.     serviceUrl:
  16.       defaultZone: http://127.0.0.1:10086/eureka
  17.   instance:
  18.     leaseRenewalIntervalInSeconds: 5 # 每隔5秒发送一次心跳
  19.     leaseExpirationDurationInSeconds: 10 # 10秒不发送就过期
  20.     preferIpAddress: true
  21.     ipAddress: 127.0.0.1
  22.     instanceId: ${spring.application.name}:${server.port}

run启动类：如图，成功运行

70 6

然后访问浏览器http://127.0.0.1:10086/，如图：

70 7

服务成功注册！！！！

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