Spring Cloud Openfeign Spring cloud openfeign is not working if the URL have spEL expressions

Getting below issue while using the feign client. Seems the spring cloud openfeign not able to evaluate the spEL expressions.

2019-08-07 06:21:45.273 ERROR main SpringApplication - Application run failed
java.lang.IllegalArgumentException: https://localhost:#{8280 + 12}/accountservice is malformed
        at org.springframework.cloud.openfeign.FeignClientsRegistrar.getUrl(FeignClientsRegistrar.java:116)
        at org.springframework.cloud.openfeign.FeignClientsRegistrar.getUrl(FeignClientsRegistrar.java:300)
        at org.springframework.cloud.openfeign.FeignClientsRegistrar.registerFeignClient(FeignClientsRegistrar.java:231)
        at org.springframework.cloud.openfeign.FeignClientsRegistrar.registerFeignClients(FeignClientsRegistrar.java:219)
        at org.springframework.cloud.openfeign.FeignClientsRegistrar.registerBeanDefinitions(FeignClientsRegistrar.java:144)
        at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.lambda$loadBeanDefinitionsFromRegistrars$1(ConfigurationClassBeanDefinitionReader.java:364)
        at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader$$Lambda$177/1332691311.accept(Unknown Source)
        at java.util.LinkedHashMap.forEach(LinkedHashMap.java:676)
        at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsFromRegistrars(ConfigurationClassBeanDefinitionReader.java:363)
        at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:145)
        at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:117)
        at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:327)
        at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:232)
        at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:275)
        at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:95)
        at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:705)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:531)
        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140)
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:742)
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:389)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:311)
        at com.castlight.service.core.SpringApplicationInitializer.start(SpringApplicationInitializer.java:37)
        at com.castlight.segmentservice.Application.main(Application.java:10)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:497)
        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:47)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:86)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:50)
        at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51)
Caused by: java.net.MalformedURLException: For input string: "#{8280 + 12}"
        at java.net.URL.<init>(URL.java:620)
        at java.net.URL.<init>(URL.java:483)
        at java.net.URL.<init>(URL.java:432)
        at org.springframework.cloud.openfeign.FeignClientsRegistrar.getUrl(FeignClientsRegistrar.java:113)
        ... 30 common frames omitted
Caused by: java.lang.NumberFormatException: For input string: "#{8280 + 12}"
        at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
        at java.lang.Integer.parseInt(Integer.java:569)
        at java.lang.Integer.parseInt(Integer.java:615)
        at java.net.URLStreamHandler.parseURL(URLStreamHandler.java:216)
        at java.net.URL.<init>(URL.java:615)
        ... 33 common frames omitted

Comment From: TYsewyn

Can you provide a complete, minimal, verifiable sample that reproduces the problem? It should be available as a GitHub (or similar) project or attached to this issue as a zip file.

Comment From: spring-projects-issues

If you would like us to look at this issue, please provide the requested information. If the information is not provided within the next 7 days this issue will be closed.

Comment From: spring-projects-issues

Closing due to lack of requested feedback. If you would like us to look at this issue, please provide the requested information and we will re-open the issue.

Comment From: trajano

It looks similar to the issue I am facing... https://stackoverflow.com/questions/66278338/how-do-i-get-spel-expressions-to-work-in-a-beanpostprocessor-that-is-application

I am unable to create an MVCE with Spring Boot though. However, I did created it for plain Spring Web with Tomcat, https://github.com/trajano/spring-beanpostproc-mvce it may help in diagnosing the issue, but likely it's a problem on Spring itself rather than this component. I opened up https://github.com/spring-projects/spring-framework/issues/26571 to track it.