利用SpringCloud搭建一个最简单的微服务框架

刺骨的言语ヽ痛彻心扉 2022-03-15 15:17 285阅读 0赞

# [利用SpringCloud搭建一个最简单的微服务框架][SpringCloud] #

# 1.微服务 #

微服务主要包含服务注册，服务发现，服务路由，服务配置，服务熔断，服务降级等一系列的服务，而Spring Cloud为我们提供了个一整套的服务；

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本例子为你提供了最简单的一个服务发现例子，包含服务注册发现spingCloudEurekaServer、服务配置中心spingCloudConfServer、以及一个app应用springCloudApp

# 2.服务注册与发现 #

**spingCloudEurekaServer**

pom.xml

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Application.java

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1.  package com.caicongyang.eureka;  
2.    
3.  import org.springframework.boot.SpringApplication;  
4.  import org.springframework.boot.autoconfigure.SpringBootApplication;  
5.  import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;  
6.    
7.  /\*\* 
8.   \* Spring could EurekaServer程序主入口 
9.   \*  
10.  \* @author Administrator 
11.  \* 
12.  \*/  
13. @SpringBootApplication  
14. @EnableEurekaServer  
15. public class Application \{  
16.     public static void main(String\[\] args) \{  
17.         SpringApplication.run(Application.class, args);  
18.     \}  
19. \}

application.yml  （可用properties替代）

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1.  server:   
2.        port: 9999  
3.  eureka:  
4.         instance:   
5.             hostname: 127.0.0.1  
6.         client:   
7.              registerWithEureka: false  
8.              fetchRegistry: false  
9.              serviceUrl:   
10.                      defaultZone: http://$\{eureka.instance.hostname\}:$\{server.port\}/eureka/

# 3.服务配置（全局配置中心） #

pom.xml

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1.  <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
2.      xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">  
3.      <modelVersion>4.0.0</modelVersion>  
4.      <groupId>com.caicongyang</groupId>  
5.      <artifactId>spingCloudConfServer</artifactId>  
6.      <version>0.0.1-SNAPSHOT</version>  
7.    
8.      <parent>  
9.          <groupId>org.springframework.cloud</groupId>  
10.         <artifactId>spring-cloud-starter-parent</artifactId>  
11.         <version>Angel.SR6</version>  
12.     </parent>  
13.     <dependencies>  
14.         <dependency>  
15.             <groupId>org.springframework.cloud</groupId>  
16.             <artifactId>spring-cloud-config-server</artifactId>  
17.         </dependency>  
18.           
19.         <dependency>  
20.             <groupId>org.springframework.cloud</groupId>  
21.             <artifactId>spring-cloud-starter-eureka</artifactId>  
22.         </dependency>  
23.         <dependency>  
24.             <groupId>org.springframework.boot</groupId>  
25.             <artifactId>spring-boot-starter-test</artifactId>  
26.             <scope>test</scope>  
27.         </dependency>  
28.     </dependencies>  
29.   
30.     <build>  
31.         <plugins>  
32.             <plugin>  
33.                 <groupId>org.springframework.boot</groupId>  
34.                 <artifactId>spring-boot-maven-plugin</artifactId>  
35.             </plugin>  
36.         </plugins>  
37.         <defaultGoal>compile</defaultGoal>  
38.     </build>  
39. </project>

application.java

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1.  package com.caiconyang.conf;  
2.    
3.  import org.springframework.boot.SpringApplication;  
4.  import org.springframework.boot.autoconfigure.SpringBootApplication;  
5.  import org.springframework.cloud.config.server.EnableConfigServer;  
6.    
7.  /\*\* 
8.   \* Spring could conf程序主入口 
9.   \* @author Administrator 
10.  \* 
11.  \*/  
12. @SpringBootApplication  
13. @EnableConfigServer  
14. public class Application \{  
15.     public static void main(String\[\] args) \{     
16.         SpringApplication.run(Application.class,args);     
17.     \}     
18. \}

application.properties

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1.  server.port=8888  
2.  \#\# App配置文件所在git地址  
3.  spring.cloud.config.server.git.uri=https://git.oschina.net/caicongyang/springCloudConfigRepo.git  
4.  spring.cloud.config.server.git.searchPaths=repo  
5.  spring.application.name=spingCloudConfServer

# 4.App #

pom.xml

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1.  <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">  
2.    <modelVersion>4.0.0</modelVersion>  
3.    <groupId>com.caicongyang</groupId>  
4.    <artifactId>springCloudApp</artifactId>  
5.    <version>0.0.1-SNAPSHOT</version>  
6.      
7.      <parent>  
8.          <groupId>org.springframework.cloud</groupId>  
9.          <artifactId>spring-cloud-starter-parent</artifactId>  
10.         <version>Angel.SR6</version>  
11.     </parent>  
12.   <properties>  
13.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  
14.         <java.version>1.7</java.version>  
15.         <java.encoding>UTF-8</java.encoding>  
16.         <springfox.swagger.version>2.2.2</springfox.swagger.version>  
17.     </properties>  
18.   <dependencies>  
19.         <dependency>  
20.             <groupId>org.springframework.boot</groupId>  
21.             <artifactId>spring-boot-starter-web</artifactId>  
22.         </dependency>  
23.           
24.         <dependency>  
25.             <groupId>org.springframework.boot</groupId>  
26.             <artifactId>spring-boot-starter-actuator</artifactId>  
27.         </dependency>  
28.         <dependency>  
29.             <groupId>org.springframework.cloud</groupId>  
30.             <artifactId>spring-cloud-starter-config</artifactId>  
31.         </dependency>  
32.           
33.         <dependency>  
34.             <groupId>org.springframework.cloud</groupId>  
35.             <artifactId>spring-cloud-starter-eureka</artifactId>  
36.         </dependency>  
37.               
38.         <dependency>  
39.             <groupId>org.springframework.cloud</groupId>  
40.             <artifactId>spring-cloud-starter-hystrix</artifactId>  
41.         </dependency>  
42.   
43.         <dependency>  
44.             <groupId>org.springframework.boot</groupId>  
45.             <artifactId>spring-boot-starter-test</artifactId>  
46.             <scope>test</scope>  
47.         </dependency>  
48.         <dependency>  
49.             <groupId>io.springfox</groupId>  
50.             <artifactId>springfox-swagger2</artifactId>  
51.             <version>$\{springfox.swagger.version\}</version>  
52.         </dependency>  
53.         <dependency>  
54.             <groupId>io.springfox</groupId>  
55.             <artifactId>springfox-swagger-ui</artifactId>  
56.             <version>$\{springfox.swagger.version\}</version>  
57.         </dependency>  
58.     </dependencies>  
59.       
60.     
61.   <build>  
62.         <finalName>spingcould</finalName>  
63.         <plugins>  
64.             <plugin>  
65.                 <groupId>org.apache.maven.plugins</groupId>  
66.                 <artifactId>maven-compiler-plugin</artifactId>  
67.                 <configuration>  
68.                     <source>$\{java.version\}</source>  
69.                     <target>$\{java.version\}</target>  
70.                     <encoding>$\{java.encoding\}</encoding>  
71.                     <showWarnings>true</showWarnings>  
72.                 </configuration>  
73.             </plugin>  
74.         </plugins>  
75.     </build>  
76.     
77.     
78. </project>

Application.java

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1.  package com.caicongyang.springCloudApp.main;  
2.    
3.  import org.springframework.boot.SpringApplication;  
4.  import org.springframework.boot.autoconfigure.EnableAutoConfiguration;  
5.  import org.springframework.cloud.client.discovery.EnableDiscoveryClient;  
6.  import org.springframework.context.annotation.ComponentScan;  
7.  import org.springframework.context.annotation.Configuration;  
8.    
9.  /\*\* 
10.  \* Spring could web程序主入口 
11.  \* @author Administrator 
12.  \* 
13.  \*/  
14. @Configuration//配置控制    
15. @EnableAutoConfiguration//启用自动配置    
16. @ComponentScan(value=\{"com.caicongyang.springCloudApp"\})//组件扫描    
17. @EnableDiscoveryClient  
18. public class Application \{  
19.     public static void main(String\[\] args) \{     
20.         //第一个简单的应用，     
21.         SpringApplication.run(Application.class,args);     
22.     \}     
23. \}

SwaggerConfig.java

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1.  package com.caicongyang.springCloudApp.conf;  
2.    
3.  import org.springframework.beans.factory.annotation.Value;  
4.  import org.springframework.context.annotation.Bean;  
5.  import org.springframework.context.annotation.Configuration;  
6.    
7.  import springfox.documentation.service.ApiInfo;  
8.  import springfox.documentation.spi.DocumentationType;  
9.  import springfox.documentation.spring.web.plugins.Docket;  
10. import springfox.documentation.swagger2.annotations.EnableSwagger2;  
11.   
12. /\*\* 
13.  \* 
14.  \* @author caicongyang1 
15.  \* @version id: SwaggerConfig, v 0.1 16/4/22 下午4:12 caicongyang1 Exp $$ 
16.  \*/  
17. @Configuration  
18. @EnableSwagger2  
19. public class SwaggerConfig \{  
20.   
21.     @Value("$\{swagger.ui.enable\}") //该配置项在配置中心管理  
22.     private boolean environmentSpecificBooleanFlag;  
23.       
24.     @Bean  
25.     public Docket docketFactory() \{  
26.         return new Docket(DocumentationType.SWAGGER\_2).apiInfo(  
27.            new ApiInfo("接口文档", "SpingCloud web接口列表", "1.0", "", "", "", "")).enable(environmentSpecificBooleanFlag);  
28.     \}  
29. \}

application.properties

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1.  server.port=8080  
2.  spring.cloud.config.uri=http://127.0.0.1:8888  
3.  spring.cloud.config.name=springCloudApp  
4.  spring.cloud.config.profile=$\{config.profile:dev\}  
5.  \#service discovery url  
6.  eureka.client.serviceUrl.defaultZone=http://localhost:9999/eureka/  
7.  \#service name  
8.  spring.application.name=springCloudApp

#    5.测试与验证 #

顺序启动服务注册发现spingCloudEurekaServer、服务配置中心spingCloudConfServer、以及一个app应用springCloudApp

测试与验证

1.访问http://localhost:9999/eureka/  app是否已经注册上来

2.访问 http://localhost:8080/swagger-ui.html 是否正常访问，如果正常访问说明争取读取到config配置中心的swagger.ui.enable配置项

# 6.源码： #

以上所有源码：

https://git.oschina.net/caicongyang/springcloud.git

[SpringCloud]: https://www.cnblogs.com/cxxjohnson/p/7689537.html
[Center]: /images/20220315/ce2415f7e6884eef8c7fb9785c56dd8a.png
[view plain]: http://blog.csdn.net/caicongyang/article/details/52974406#