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版本要求

SpringBoot、OpenFeign和Zipkin都要求2.1.*

核心代碼

• jar包引入

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.2.RELEASE</version>
</parent>
<dependencies>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        <version>0.2.2.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
    </dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
    <groupId>com.jgspx</groupId>
    <artifactId>openfeign-msg-service-api</artifactId>
    <version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
    <groupId>com.jgspx</groupId>
    <artifactId>openfeign-user-service-api</artifactId>
    <version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-zipkin</artifactId>
    <version>2.1.0.RELEASE</version>
</dependency>
<dependency>
    <groupId>com.google.guava</groupId>
    <artifactId>guava</artifactId>
    <version>18.0</version>
</dependency>
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-openfeign</artifactId>
    <version>2.1.0.RELEASE</version>
</dependency>
</dependencies>

• 相關(guān)配置

spring:
  cloud:
    nacos:
      discovery:
        server-addr: 10.211.55.16:8848
        #feign客戶端的命名必須使用中劃線，不能使用下劃線
  application:
    name: zipkin-user-service
  zipkin:
    base-url: http://127.0.0.1:9411/
  ###全部采集
  # 抽樣率，默認(rèn)是0.1（90%的數(shù)據(jù)會被丟棄）
  # 這邊為了測試方便，將其設(shè)置為1.0，即所有的數(shù)據(jù)都會上報給zipkin
  sleuth:
    sampler:
      probability: 1.0

效果展示

a、成功鏈路信息：

• 項目中獲取鏈路信息：

request.getHeader("X-B3-TraceId")+",spanid:"+ request.getHeader("X-B3-SpanId")

• 每一個都是服務(wù)端，如果調(diào)用其他的話會有客戶端的鏈路

  
  

b、失敗鏈路信息：

• 錯誤信息里可以看到具體的錯誤

"tags": {
      "error": "Request processing failed; nested exception is java.lang.ArithmeticException: / by zero",
      "http.method": "GET",
      "http.path": "/sendmsg",
      "mvc.controller.class": "MsgServiceImpl",
      "mvc.controller.method": "sendMsg"
    },

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