Spring Cloud 配置客户端未从配置服务器中选择值

Posted 2023-02-16

【中文标题】Spring Cloud 配置客户端未从配置服务器中选择值

【英文标题】：Spring Cloud config client not picking values from Config server

【发布时间】：2020-07-23 03:25:41

【问题描述】：

我的配置客户端没有从配置中选择属性值 服务器。

http://localhost:8888/customer_service/default 

Config 服务器端点为 Config 客户端返回正确的值，

    "name": "customer_service",
    "profiles": [
        "default"
    ],
    "label": null,
    "version": "c7648db5662dc65aeaad9c91abbf58b41010be7c",
    "state": null,
    "propertySources": [
        
            "name": "https://github.com/prasadrpm/MicroService_config.git/customer_service.properties",
            "source": 
                "customer.config.location": "XXXX",
                "customer.config.name": "YYYY"
            
        
    ]

配置客户端 bootstrap.properties

server.port=8080
spring.application.name=customer_service

spring.cloud.config.enabled=true
spring.cloud.config.name=config_server
spring.cloud.config.uri=http://localhost:8888

配置客户端日志

2020-04-10 16:47:00.725  INFO 14976 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8888
2020-04-10 16:47:03.267  INFO 14976 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Located environment: name=config_server, profiles=[default], label=null, version=c7648db5662dc65aeaad9c91abbf58b41010be7c, state=null
2020-04-10 16:47:03.269  INFO 14976 --- [           main] b.c.PropertySourceBootstrapConfiguration : Located property source: [BootstrapPropertySource name='bootstrapProperties-configClient']
2020-04-10 16:47:03.280  INFO 14976 --- [           main] com.customer.CustomerServiceApplication  : No active profile set, falling back to default profiles: default
...
2020-04-10 16:47:05.164  INFO 14976 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 1860 ms
2020-04-10 16:47:05.549  WARN 14976 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'customerController': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'customer.config.location' in value "$customer.config.location"
2020-04-10 16:47:05.552  INFO 14976 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2020-04-10 16:47:05.577  INFO 14976 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-04-10 16:47:05.595 ERROR 14976 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'customerController': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'customer.config.location' in value "$customer.config.location"
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:405) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]

【参考方案1】：

返回正确属性/配置的 URL 是：localhost:8888/customer_service/default

客户端应用程序正在根据以下数据查询属性：

c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8888
c.c.c.ConfigServicePropertySourceLocator : Located environment: name=config_server, profiles=[default], label=null, version=c7648db5662dc65aeaad9c91abbf58b41010be7c, state=null
b.c.PropertySourceBootstrapConfiguration : Located property source: [BootstrapPropertySource name='bootstrapProperties-configClient']
com.customer.CustomerServiceApplication  : No active profile set, falling back to default profiles: default
...

所以，实际上，客户端应用程序正在调用：

localhost:8888/config_server/default 

所以，有两种解决方案：

删除 bootstrap.properties 中的 spring.cloud.config.name=config_server 属性，您的应用程序应该能够获取属性。 将spring.cloud.config.name 的值更新为customer_service 服务。但是如果你没有明确提供spring.cloud.config.name，那么客户端将使用spring.application.name作为spring.cloud.config.name的默认值。

【参考方案2】：

您在这里使用了什么注释？ 这样就可以轻松找回了。

@Value("$customer.config.location")
    private String someOtherProperty;

不需要

spring.cloud.config.name=config_server

【讨论】：

我只是使用完全相同的注释。 @Value("$customer.config.location") 私有字符串位置；

@Arunprasad 你能分享你试图检索它的控制器的 sn-p 吗？