• 简介

Zipkin是一个分布式跟踪系统，Sleuth负责为服务之间的调用提供链路追踪，而Zipkin用于收集在微服务体系结构中延迟问题排除所需的定时数据。通俗来说就是收集各微服务应用的接口调用过程所消耗的时间数据，方便开发人员快速定位解决接口性能问题。

• 相应依赖

spring-cloud-starter-zipkin中已包含了spring-cloud-starter-sleuth与spring-cloud-sleuth-zipkin的依赖，所以使用sleuth-zipkin的SpringCloud项目只需添加spring-cloud-starter-zipkin依赖即可

• 快速开始

根模块

• pom.xml

      <parent>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-parent</artifactId>
          <version>2.0.1.RELEASE</version>
      </parent>
  
      <properties>
          <zipkin-version>2.11.8</zipkin-version>
      </properties>
  
      <dependencyManagement>
          <dependencies>
              <dependency>
                  <groupId>org.springframework.cloud</groupId>
                  <artifactId>spring-cloud-starter-zipkin</artifactId>
                  <version>2.0.1.RELEASE</version>
              </dependency>
              <dependency>
                  <groupId>io.zipkin.java</groupId>
                  <artifactId>zipkin-server</artifactId>
                  <version>${zipkin-version}</version>
              </dependency>
              <dependency>
                  <groupId>io.zipkin.java</groupId>
                  <artifactId>zipkin-autoconfigure-ui</artifactId>
                  <version>${zipkin-version}</version>
              </dependency>
          </dependencies>
      </dependencyManagement>
  

cloud-zipkin模块

• pom.xml

  <dependencies>
     <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
     </dependency>
     <dependency>
         <groupId>org.springframework.cloud</groupId>
         <artifactId>spring-cloud-starter-zipkin</artifactId>
     </dependency>
     <dependency>
         <groupId>io.zipkin.java</groupId>
         <artifactId>zipkin-server</artifactId>
     </dependency>
     <dependency>
         <groupId>io.zipkin.java</groupId>
         <artifactId>zipkin-autoconfigure-ui</artifactId>
     </dependency>
  </dependencies>
  

• ZipkinApplication.java

   import org.springframework.boot.SpringApplication;
   import org.springframework.boot.autoconfigure.SpringBootApplication;
   import zipkin2.server.internal.EnableZipkinServer;
   
   @SpringBootApplication
   @EnableZipkinServer
   public class ZipkinApplication {
       public static void main(String[] args) {
           SpringApplication.run(ZipkinApplication.class);
       }
   }
  

• application.xml

  server:
    port: 9411
    #port: 9000
  spring:
     application:
       name: zipkin
     #zipkin:
       #base-url: http://localhost:9000/
  management:
     metrics:
       web:
         server:
         #避免访问zipkin页面报java.lang.IllegalArgumentException
           auto-time-requests: false
  

cloud-consumer模块

• pom.xml

  <dependencies>
       <dependency>
           <groupId>org.springframework.cloud</groupId>
           <artifactId>spring-cloud-starter-zipkin</artifactId>
       </dependency>
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-web</artifactId>
       </dependency>
  </dependencies>
  

• ConsumerApplication.java

  import org.springframework.boot.SpringApplication;
  import org.springframework.boot.autoconfigure.SpringBootApplication;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.RestController;
  
  @SpringBootApplication
  @RestController
  public class ConsumerApplication {
      public static void main(String[] args) {
          SpringApplication.run(ConsumerApplication.class);
      }
  
      @GetMapping("/index")
      public String index() {
          return "index";
      }
  }
  

• application.yml

  server:
    port: 9999
  spring:
    application:
      name: consumer
    sleuth:
      sampler:
        probability: 1.0   #2.0后percentage改为probability
  

执行结果

访问消费者接口http://localhost:9999/index，在刷新zipkin页面便可发现consumer服务已添加到Service Name选择框，点击下侧服务名上的蓝色框即可查看该次接口调用的详细信息。
注:若不调用相应接口对应的服务名不会显示到选择框，一开始还以为自己配置错了。

Demo Github url:https://github.com/Wilson-He/spring-cloud-zipkin-demo