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Add lesson 15
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‎spring-cloud/README.md

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@@ -195,7 +195,7 @@ Spring Cloud 系列课程致力于以实战的方式覆盖 Spring Cloud 的功
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* 本章小结（10分钟）
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* 问答互动（20分钟）
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### 第十五节 分布式应用跟踪
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### [第十五节 分布式应用跟踪](https://segmentfault.com/l/1500000011386721/play) ([课件]((https://github.com/mercyblitz/segmentfault-lessons/tree/master/spring-cloud/lesson-14))) [[问答](https://segmentfault.com/l/1500000011386721/d/1560000012512486)]
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* 受众群体：具备一定的`Java`服务端编程经验更佳
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‎spring-cloud/lesson-15/Dapper.pdf

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‎spring-cloud/lesson-15/README.md

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# [Spring Cloud 分布式应用跟踪](https://segmentfault.com/l/1500000011386721)
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SpanID : 阶段性 ID，比如一次 RPC 有可能多 Span
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TraceID：一次 RPC 只有一个 TraceID
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## 整合 Spring Cloud Sleuth
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### 增加依赖
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```xml
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<!-- 整合 Spring Cloud Sleuth -->
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-starter-sleuth</artifactId>
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</dependency>
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```
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## Zipkin 整合
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### 新增 Zipkin 服务器
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#### 增加 Maven 依赖
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```xml
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<!-- Zipkin Server 整合 -->
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<dependency>
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<groupId>io.zipkin.java</groupId>
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<artifactId>zipkin-server</artifactId>
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</dependency>
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<!-- Zipkin Server UI 整合 -->
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<dependency>
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<groupId>io.zipkin.java</groupId>
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<artifactId>zipkin-autoconfigure-ui</artifactId>
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</dependency>
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```
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#### 激活 Zipkin 服务器
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HTTP 方式采集
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```java
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package com.segumentfault.spring.cloud.lesson15;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import zipkin.server.EnableZipkinServer;
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/**
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* Zipkin 服务器应用
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*
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* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
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* @since 0.0.1
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*/
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@SpringBootApplication
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@EnableZipkinServer
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public class ZipkinServerApplication {
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public static void main(String[] args) {
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SpringApplication.run(ZipkinServerApplication.class, args);
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}
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}
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```
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#### 配置 Zipkin 服务器
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```properties
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## 应用元信息
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## Zipkin 服务器应用名称
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spring.application.name = zipkin-server
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## Zipkin 服务器服务端口
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server.port = 20000
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## 管理端口安全失效
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management.security.enabled = false
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```
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### 整合 ZipKin 客户端
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#### 改造 `user-service-client`
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HTTP 方式上报
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##### 增加 Maven 依赖
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```xml
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<!-- 整合 Spring Cloud Zipkin -->
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-starter-zipkin</artifactId>
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</dependency>
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```
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##### 配置：连接 zipkin 服务器
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```properties
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## Zipkin 配置
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### 配置 Zipkin 服务器
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zipkin.server.host = localhost
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zipkin.server.port = 20000
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spring.zipkin.base-url = http://${zipkin.server.host}:${zipkin.server.port}
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```
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#### 改造 `user-service-provider`
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##### 增加 Maven 依赖
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```xml
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<!-- 整合 Spring Cloud Zipkin -->
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-starter-zipkin</artifactId>
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</dependency>
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```
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##### 配置：连接 zipkin 服务器
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```properties
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## Zipkin 配置
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### 配置 Zipkin 服务器
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zipkin.server.host = localhost
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zipkin.server.port = 20000
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spring.zipkin.base-url = http://${zipkin.server.host}:${zipkin.server.port}
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```
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### 改造Zipkin 服务器：使用 Stream 方式订阅
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#### 增加 Maven 依赖
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```xml
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<!-- zipkin 整合 Spring Cloud Sleuth Stream -->
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-sleuth-zipkin-stream</artifactId>
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</dependency>
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<!-- 整合 Spring Cloud Stream Binder Rabbit MQ -->
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-stream-binder-rabbit</artifactId>
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</dependency>
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```
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#### 替换激活注解：`@EnableZipkinStreamServer`
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Stream 方式采集
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```java
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package com.segumentfault.spring.cloud.lesson15.zipkin.server;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.springframework.cloud.sleuth.zipkin.stream.EnableZipkinStreamServer;
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/**
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* Zipkin 服务器应用
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*
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* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
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* @since 0.0.1
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*/
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@SpringBootApplication
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//@EnableZipkinServer
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@EnableZipkinStreamServer
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public class ZipkinServerApplication {
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public static void main(String[] args) {
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SpringApplication.run(ZipkinServerApplication.class, args);
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}
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}
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```
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### 改造 `user-service-client`
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#### 增加 Maven 依赖
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Stream 方式上报
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```xml
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<!-- 整合 Spring Cloud Sleuth -->
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-starter-sleuth</artifactId>
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</dependency>
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<!-- 整合 Spring Cloud Sleuth Stream -->
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-sleuth-stream</artifactId>
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</dependency>
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<!-- 整合 Spring Cloud Stream Binder Rabbit MQ -->
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-stream-binder-rabbit</artifactId>
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</dependency>
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```
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> 注意应移除 `spring-cloud-starter-zipkin` 依赖
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### 改造 `user-service-provider`
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#### 增加 Maven 依赖
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Stream 方式上报
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```xml
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<!-- 整合 Spring Cloud Sleuth -->
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-starter-sleuth</artifactId>
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</dependency>
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<!-- 整合 Spring Cloud Sleuth Stream -->
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-sleuth-stream</artifactId>
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</dependency>
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<!-- 整合 Spring Cloud Stream Binder Rabbit MQ -->
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-stream-binder-rabbit</artifactId>
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</dependency>
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```
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> 注意应移除 `spring-cloud-starter-zipkin` 依赖

‎spring-cloud/lesson-15/[课件] Spring Cloud 分布式应用跟踪.pdf

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‎spring-cloud/lesson-15/spring-cloud-lesson-15/.gitignore

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target/
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!.mvn/wrapper/maven-wrapper.jar
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### STS ###
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.apt_generated
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.classpath
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.factorypath
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.project
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.settings
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.springBeans
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### IntelliJ IDEA ###
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.idea
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*.iws
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*.iml
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*.ipr
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### NetBeans ###
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nbproject/private/
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build/
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nbbuild/
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dist/
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nbdist/
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.nb-gradle/

‎spring-cloud/lesson-15/spring-cloud-lesson-15/config-server/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>spring-cloud-lesson-15</artifactId>
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<groupId>com.segumentfault</groupId>
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<version>0.0.1-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>config-server</artifactId>
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<dependencies>
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<!-- 依赖 Spring Cloud Config Server -->
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-config-server</artifactId>
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</dependency>
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<!-- 依赖 Spring Cloud Netflix Eureka -->
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-starter-eureka</artifactId>
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</dependency>
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</dependencies>
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</project>

‎spring-cloud/lesson-15/spring-cloud-lesson-15/config-server/src/main/java/com/segumentfault/spring/cloud/lesson15/config/server/ConfigServerApplication.java

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package com.segumentfault.spring.cloud.lesson15.config.server;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
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import org.springframework.cloud.config.server.EnableConfigServer;
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/**
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* 配置服务器应用
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*
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* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
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* @since 1.0.0
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*/
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@EnableConfigServer
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@EnableDiscoveryClient
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@SpringBootApplication
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public class ConfigServerApplication {
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public static void main(String[] args) {
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SpringApplication.run(ConfigServerApplication.class, args);
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}
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}

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