[application.properties] 선언 오류

구성 클래스 [com.example.coinprice.CoinPriceApplication] 구문 분석 실패, 중첩 예외는 java.io.FileNotFoundException입니다. 클래스 경로 리소스 [application.properties]가 존재하지 않기 때문에 열 수 없습니다.

해결법1 maven clean > reload

실패

해결법2 종속성 오류 수정

<dependency>
    <groupId>javax.validation</groupId>
    <artifactId>validation-api</artifactId>
    <version>2.0.1.Final</version>
</dependency>

당연히 실패~

해결법3 프로퍼티스 확장자 yml -> properties 수정 오류 더많이남 다시 yml

해결법4

1초성공

해결법5

application.properties > .yml 바꿔줌 다른 에러 뜸

20221109:10:17:18.218 [restartedMain] ERROR  Application run failed
org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [com.example.coinprice.CoinPriceApplication]; nested exception is java.io.FileNotFoundException: class path resource [application.properties] cannot be opened because it does not exist
	at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:188)
	at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:331)
	at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:247)
	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:311)
	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:112)
	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:746)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:564)
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:308)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295)
	at com.example.coinprice.CoinPriceApplication.main(CoinPriceApplication.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:498)
	at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
Caused by: java.io.FileNotFoundException: class path resource [application.properties] cannot be opened because it does not exist
	at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:199)
	at org.springframework.core.io.support.EncodedResource.getInputStream(EncodedResource.java:159)
	at org.springframework.core.io.support.PropertiesLoaderUtils.fillProperties(PropertiesLoaderUtils.java:110)
	at org.springframework.core.io.support.PropertiesLoaderUtils.fillProperties(PropertiesLoaderUtils.java:81)
	at org.springframework.core.io.support.PropertiesLoaderUtils.loadProperties(PropertiesLoaderUtils.java:67)
	at org.springframework.core.io.support.ResourcePropertySource.<init>(ResourcePropertySource.java:67)
	at org.springframework.core.io.support.DefaultPropertySourceFactory.createPropertySource(DefaultPropertySourceFactory.java:37)
	at org.springframework.context.annotation.ConfigurationClassParser.processPropertySource(ConfigurationClassParser.java:462)
	at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:279)
	at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:249)
	at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:198)
	at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:303)
	at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:249)
	at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:206)
	at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:174)
	... 18 common frames omitted