本文共 3555 字，大约阅读时间需要 11 分钟。

1、服务追踪组件zipkin

Spring Cloud Sleuth集成了zipkin组件

2、构建server-zipkin

从spring Cloud为F版本开始，已经不需要自己构建Zipkin Server了，只需要下载jar运行即可。

命令：java -jar zipkin-server-2.12.9-exec.jar

D:\Users\chengyq>c:C:\>java -jar zipkin-server-2.12.9-exec.jar

http://localhost:9411

3、构建server-x

3.1 pom.xml

   
       
    
     4.0.0
        
    
     com.cntaiping.tpa
        
    
     server-x
        
    
     0.0.1-SNAPSHOT
        
    
     jar
        
    
     server-x
        
    
     Demo project for Spring Boot
        
            
     
      com.cntaiping.tpa
             
     
      cloud
             
     
      1.0-SNAPSHOT
         
        
            
                 
      
       org.springframework.boot
                  
      
       spring-boot-starter-web
              
             
                 
      
       org.springframework.cloud
                  
      
       spring-cloud-starter-zipkin
              
         
    
   

3.2 application.properties

server.port=7201spring.zipkin.base-url=http://localhost:9411spring.application.name=server-x

3.3 Application类

package com.cntaiping.tpa.serverx;import brave.sampler.Sampler;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.context.annotation.Bean;import org.springframework.web.client.RestTemplate;@SpringBootApplicationpublic class ServerXApplication {    public static void main(String[] args) {        SpringApplication.run(ServerXApplication.class, args);    }    @Bean    public RestTemplate getRestTemplate(){        return new RestTemplate();    }    @Bean    public Sampler defaultSampler() {        return Sampler.ALWAYS_SAMPLE;    }}

3.4 控制器

package com.cntaiping.tpa.serverx.controller;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;import org.springframework.web.client.RestTemplate;import java.util.logging.Level;@RestControllerpublic class XController {    private Logger logger = LoggerFactory.getLogger(getClass());    @Autowired    private RestTemplate restTemplate;    @RequestMapping("/hello")    public String hello(){        logger.info("calling trace server-x ");        return restTemplate.getForObject("http://localhost:7202/info", String.class);    }    @RequestMapping("/info")    public String info(){        logger.info("calling trace server-x ");        return "i'm server-x";    }}

4、构建server-y

构建server-y与构建构建server-x过程相同，不同的项目文件如下

4.1 application.properties

server.port=7202spring.zipkin.base-url=http://localhost:9411spring.application.name=server-y

4.2 控制器

package com.cntaiping.tpa.servery.controller;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;import org.springframework.web.client.RestTemplate;@RestControllerpublic class YController {    private Logger logger = LoggerFactory.getLogger(getClass());    @Autowired    private RestTemplate restTemplate;    @RequestMapping("/hello")    public String hello(){        logger.info("calling trace server-y ");        return restTemplate.getForObject("http://localhost:7201/info", String.class);    }    @RequestMapping("/info")    public String info(){        logger.info("calling trace server-y ");        return "i'm server-y";    }}

5、运行效果

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