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1. springcloud 啟動 config-client 報錯：

java.lang.ClassNotFoundException: org.springframework.integration.config.HandlerMethodArgumentResolversHolder at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_45]at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_45]at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~ [na:1.8.0_45]at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_45]... 26 common frames omitted

2. 原因：使用的 pom 版本要為 2.0.3 。我原本是使用的 2.1.6 。

<parent> 改為： <parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.0.3.RELEASE</version><relativePath/></parent>

?完整 pom 為：

<?xml version="1.0" encoding="UTF-8"?> <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"><modelVersion>4.0.0</modelVersion><groupId>com.config</groupId><artifactId>config-client</artifactId><version>0.0.1-SNAPSHOT</version><name>config-client</name><description>配置文件管理 client</description><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.0.3.RELEASE</version><relativePath/></parent><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding><java.version>1.8</java.version><spring-cloud.version>Finchley.RELEASE</spring-cloud.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><!--消息總線--><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-bus-amqp</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId></dependency><!--注冊服務到 注冊中心，作為 Eureka 客戶端--><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-client</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-config</artifactId></dependency></dependencies><dependencyManagement><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

3.重啟工程，啟動成功：

總結

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