springboot 2.0 config client 刷新问题

Posted 2021-01-13 louis2015

 

按照下面这个案例练习spring boot 的configure Server 、 config client， 发现修改配置文件后，不能看到刷新的结果。 记录一下解决思路。

https://www.tutorialspoint.com/spring_boot/spring_boot_cloud_configuration_client.htm

 

问题：

手动修改config-client.properties的内容后，刷新 config Server URL:  http://localhost:8888/config-client/default/master, 修改的内容可以被显示过来，

但是刷新config client URL： http://localhost:8080/， 看到的还是修改前的内容。

尝试用postman发消息给http://localhost:8080/refresh， 然后再刷新http://localhost:8080/， 看到的还是修改前的内容。没有变化。

而且Post给http://localhost:8080/refresh，返回的是404错误

解决：

网上一顿搜，发现有的是post给server 有的是post给client，但是都不好使。

尝试一下URL均不好使
http://localhost:8080/refresh
http://localhost:8080/actuator/bus-refresh
http://localhost:8888/actuator/bus-refresh

修改配置文件后，http://localhost:8888/config-client/default/master,可以显示修改的内容，所以很大可能是问题发生在config client。

参照网上的配置，在config client的配置文件中添加暴露endpoint.

management.endpoints.web.exposure.include= *

 

仔细观察config client的log（eclipse的console log）发现这里打印的所以暴露的URL。

2018-10-20 11:49:32.524  INFO 9940 --- [           main] s.b.a.e.w.s.WebMvcEndpointHandlerMapping : Mapped "{[/actuator/threaddump],methods=[GET],produces=[application/vnd.spring-boot.actuator.v2+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.web.servlet.AbstractWebMvcEndpointHandlerMapping$OperationHandler.handle(javax.servlet.http.HttpServletRequest,java.util.Map<java.lang.String, java.lang.String>)
2018-10-20 11:49:32.525  INFO 9940 --- [           main] s.b.a.e.w.s.WebMvcEndpointHandlerMapping : Mapped "{[/actuator/metrics/{requiredMetricName}],methods=[GET],produces=[application/vnd.spring-boot.actuator.v2+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.web.servlet.AbstractWebMvcEndpointHandlerMapping$OperationHandler.handle(javax.servlet.http.HttpServletRequest,java.util.Map<java.lang.String, java.lang.String>)
2018-10-20 11:49:32.526  INFO 9940 --- [           main] s.b.a.e.w.s.WebMvcEndpointHandlerMapping : Mapped "{[/actuator/metrics],methods=[GET],produces=[application/vnd.spring-boot.actuator.v2+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.web.servlet.AbstractWebMvcEndpointHandlerMapping$OperationHandler.handle(javax.servlet.http.HttpServletRequest,java.util.Map<java.lang.String, java.lang.String>)
2018-10-20 11:49:32.526  INFO 9940 --- [           main] s.b.a.e.w.s.WebMvcEndpointHandlerMapping : Mapped "{[/actuator/scheduledtasks],methods=[GET],produces=[application/vnd.spring-boot.actuator.v2+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.web.servlet.AbstractWebMvcEndpointHandlerMapping$OperationHandler.handle(javax.servlet.http.HttpServletRequest,java.util.Map<java.lang.String, java.lang.String>)
2018-10-20 11:49:32.527  INFO 9940 --- [           main] s.b.a.e.w.s.WebMvcEndpointHandlerMapping : Mapped "{[/actuator/httptrace],methods=[GET],produces=[application/vnd.spring-boot.actuator.v2+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.web.servlet.AbstractWebMvcEndpointHandlerMapping$OperationHandler.handle(javax.servlet.http.HttpServletRequest,java.util.Map<java.lang.String, java.lang.String>)
2018-10-20 11:49:32.529  INFO 9940 --- [           main] s.b.a.e.w.s.WebMvcEndpointHandlerMapping : Mapped "{[/actuator/mappings],methods=[GET],produces=[application/vnd.spring-boot.actuator.v2+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.web.servlet.AbstractWebMvcEndpointHandlerMapping$OperationHandler.handle(javax.servlet.http.HttpServletRequest,java.util.Map<java.lang.String, java.lang.String>)
2018-10-20 11:49:32.530  INFO 9940 --- [           main] s.b.a.e.w.s.WebMvcEndpointHandlerMapping : Mapped "{[/actuator/refresh],methods=[POST],produces=[application/vnd.spring-boot.actuator.v2+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.web.servlet.AbstractWebMvcEndpointHandlerMapping$OperationHandler.handle(javax.servlet.http.HttpServletRequest,java.util.Map<java.lang.String, java.lang.String>)
2018-10-20 11:49:32.531  INFO 9940 --- [           main] s.b.a.e.w.s.WebMvcEndpointHandlerMapping : Mapped "{[/actuator/features],methods=[GET],produces=[application/vnd.spring-boot.actuator.v2+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.web.servlet.AbstractWebMvcEndpointHandlerMapping$OperationHandler.handle(javax.servlet.http.HttpServletRequest,java.util.Map<java.lang.String, java.lang.String>)
2018-10-20 11:49:32.535  INFO 9940 --- [           main] s.b.a.e.w.s.WebMvcEndpointHandlerMapping : Mapped "{[/actuator],methods=[GET],produces=[application/vnd.spring-boot.actuator.v2+json || application/json]}" onto protected java.util.Map<java.lang.String, java.util.Map<java.lang.String, org.springframework.boot.actuate.endpoint.web.Link>> org.springframework.boot.actuate.endpoint.web.servlet.WebMvcEndpointHandlerMapping.links(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-10-20 11:49:32.722  INFO 9940 --- [           

Mapped "{[/actuator/refresh],methods=[POST]

所以修改 postman 刷新的URL为： http://localhost:8080/actuator/refresh， 是post消息

再次刷新http://localhost:8080/的时候就看到了更新过的内容。

 

 

Config Server 刷新看到的内容

刷新config client 看到的内容