Config Server无法从GitHub拉取department-service.properties文件求助

Config Server无法从GitHub拉取department-service.properties文件，直接将数据库配置放入Department服务的application.properties时，服务能正常启动；但通过Config Server加载配置时，启动失败，提示无法配置DataSource，未指定url属性且无法确定合适的驱动类。

运行DepartmentApplication报错日志 #

2023-12-01T19:17:03.348+01:00  INFO 2376 --- [           main] c.e.department.DepartmentApplication     : Starting DepartmentApplication using Java 17.0.7 with PID 2376 (C:\Users\manar\OneDrive\Bureau\MicroService\springboot-microservice\department\department\target\classes started by manar in C:\Users\manar\OneDrive\Bureau\MicroService\springboot-microservice)
2023-12-01T19:17:03.350+01:00  INFO 2376 --- [           main] c.e.department.DepartmentApplication     : No active profile set, falling back to 1 default profile: "default"
2023-12-01T19:17:04.457+01:00  INFO 2376 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2023-12-01T19:17:04.617+01:00  INFO 2376 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 152 ms. Found 1 JPA repository interfaces.
2023-12-01T19:17:04.852+01:00  INFO 2376 --- [           main] o.s.cloud.context.scope.GenericScope     : BeanFactory id=d32c8bce-0098-31bc-a3cb-f680f42d88e3
2023-12-01T19:17:04.995+01:00  INFO 2376 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.client.loadbalancer.reactive.LoadBalancerBeanPostProcessorAutoConfiguration' of type [org.springframework.cloud.client.loadbalancer.reactive.LoadBalancerBeanPostProcessorAutoConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2023-12-01T19:17:04.996+01:00  INFO 2376 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.client.loadbalancer.reactive.LoadBalancerBeanPostProcessorAutoConfiguration$ReactorDeferringLoadBalancerFilterConfig' of type [org.springframework.cloud.client.loadbalancer.reactive.LoadBalancerBeanPostProcessorAutoConfiguration$ReactorDeferringLoadBalancerFilterConfig] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2023-12-01T19:17:04.997+01:00  INFO 2376 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'reactorDeferringLoadBalancerExchangeFilterFunction' of type [org.springframework.cloud.client.loadbalancer.reactive.DeferringLoadBalancerExchangeFilterFunction] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2023-12-01T19:17:05.339+01:00  INFO 2376 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2023-12-01T19:17:05.350+01:00  INFO 2376 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2023-12-01T19:17:05.351+01:00  INFO 2376 --- [           main] o.apache.catalina.core.StandardEngine    : Starting Servlet engine: [Apache Tomcat/10.1.15]
2023-12-01T19:17:05.450+01:00  INFO 2376 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2023-12-01T19:17:05.451+01:00  INFO 2376 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 2066 ms
2023-12-01T19:17:05.643+01:00  WARN 2376 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'dataSourceScriptDatabaseInitializer' defined in class path resource [org/springframework/boot/autoconfigure/sql/init/DataSourceInitializationConfiguration.class]: Unsatisfied dependency expressed through method 'dataSourceScriptDatabaseInitializer' parameter 0: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception with message: Failed to determine a suitable driver class
2023-12-01T19:17:05.645+01:00  INFO 2376 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2023-12-01T19:17:05.701+01:00  INFO 2376 --- [           main] .s.b.a.l.ConditionEvaluationReportLogger : 

Error starting ApplicationContext. To display the condition evaluation report re-run your application with 'debug' enabled.
2023-12-01T19:17:05.719+01:00 ERROR 2376 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

Reason: Failed to determine a suitable driver class


Action:

Consider the following:
    If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
    If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).


Process finished with exit code 1

Config Server配置 #

application.properties文件 #

spring.application.name=config-server
server.port=8888
eureka.instance.client.serverUrl.defaultZone=http://localhost:8761/eureka/
spring.cloud.config.server.git.uri=https://github.com/Mana1r/config-server-repo
spring.cloud.config.server.git.clone-on-start=true
spring.cloud.config.server.git.default-label=main

pom.xml文件 #

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.2.0</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>config-server</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>config-server</name>
    <description>Demo project for Spring Boot config-server</description>
    <properties>
        <java.version>17</java.version>
        <spring-cloud.version>2023.0.0-RC1</spring-cloud.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-config-server</artifactId>
        </dependency>
        <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-test</artifactId>
            <scope>test</scope>
        </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>
    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

</project>

ConfigServerApplication启动类 #

package com.example.configserver;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.config.server.EnableConfigServer;

@SpringBootApplication
@EnableConfigServer
public class ConfigServerApplication {

    public static void main(String[] args) {

        SpringApplication.run(ConfigServerApplication.class, args);

    }

}

Department服务配置 #

application.properties文件 #

spring.application.name=department-service
spring.config.import=optional:configserver:http://localhost:8888

pom.xml文件 #

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.2.0</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>department</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>department</name>
    <description>Spring Boot</description>
    <properties>
        <java.version>17</java.version>
        <spring-cloud.version>2023.0.0-RC1</spring-cloud.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>

        <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-data-jpa</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-openfeign</artifactId>
        </dependency>
        <dependency>
            <groupId>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </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>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>
    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

</project>

排查与解决方案 #

1. 验证Config Server配置获取能力 #

启动Config Server后，访问http://localhost:8888/department-service/default，确认是否能返回GitHub仓库中department-service.properties的完整配置：

• 若返回404或空内容，检查仓库地址是否正确、分支名是否匹配、网络连接是否正常
• 私有仓库需添加GitHub用户名和token到Config Server的application.properties：

  spring.cloud.config.server.git.username=你的GitHub用户名
  spring.cloud.config.server.git.password=你的GitHub访问令牌
  

2. 修正Department服务的配置依赖 #

当前使用optional:configserver会导致Config Server不可用时服务继续启动，缺少数据库配置必然报错。改为强制依赖：

spring.config.import=configserver:http://localhost:8888

3. 检查GitHub配置文件完整性 #

确保department-service.properties包含完整数据库配置：

spring.datasource.url=jdbc:mysql://localhost:3306/你的数据库名
spring.datasource.username=数据库用户名
spring.datasource.password=数据库密码
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.jpa.hibernate.ddl-auto=update

4. 切换到稳定版本依赖 #

当前使用的Spring Cloud 2023.0.0-RC1是候选版本，存在兼容性风险，改为稳定版：

• 修改pom.xml中spring-cloud.version为2022.0.4
• 移除repositories中的Spring Milestones仓库，使用Maven中央仓库

内容的提问来源于stack exchange，提问作者Manar