SpringBoot: Could not resolve placeholder 'XXXX' in value ${XXXX}

在通过SpringBoot读取配置文件信息时,读取失败抛出异常.

java.lang.IllegalStateException: Failed to load ApplicationContextat org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:125)at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:108)at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:190)at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:132)at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:246)at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:227)at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289)at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291)at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:246)at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)at org.junit.runners.ParentRunner.run(ParentRunner.java:363)at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)at org.junit.runner.JUnitCore.run(JUnitCore.java:137)at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'emailConfig': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'mail.host' in value "${mail.host}"at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:380)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1411)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:592)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:849)at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877)at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775)at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)at org.springframework.boot.SpringApplication.run(SpringApplication.java:316)at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:127)at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99)at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:117)... 24 more
Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'mail.host' in value "${mail.host}"at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:172)at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:124)at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:237)at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:211)at org.springframework.context.support.PropertySourcesPlaceholderConfigurer.lambda$processProperties$0(PropertySourcesPlaceholderConfigurer.java:175)at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:851)at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1188)at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1167)at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:593)at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90)at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:374)... 40 more

大概是原因没有获得配置文件中的属性信息.
属性文件

# Email config
api.aliyun.email.mail.host=smtp.aliyun.com
api.aliyun.email.mail.transport.protocol=smtp
api.aliyun.email.mail.service.address=XXX@aliyun.com
api.aliyun.email.mail.service.password=XXXX

原因,自己在写获取属性路径时,@ConfigurationProperties注解没有指向配置文件的最后一级.

@Component
@PropertySource("classpath:config/api.properties")
@ConfigurationProperties(prefix="api.aliyun.email")
@Data
public class EmailConfig {@Value("${mail.host}")private String mailHost;@Value("${mail.transport.protocol}")private String mailTransportProtocol;@Value("${mail.service.address}")private String mailServiceAddress;@Value("${mail.service.password}")private String mailServicePassword;
}

这里@ConfigurationProperties中,prefix只是指向了一部分属性前缀信息,剩余的想通过@Value来指向.

修改为
删除@ConfigurationProperties注解,并在@Value中指向配置属性

@Component
@PropertySource("classpath:config/api.properties")
@Data
public class EmailConfig {@Value("${api.aliyun.email.mail.host}")private String mailHost;@Value("${api.aliyun.email.mail.transport.protocol}")private String mailTransportProtocol;@Value("${api.aliyun.email.mail.service.address}")private String mailServiceAddress;@Value("${api.aliyun.email.mail.service.password}")private String mailServicePassword;
}

SpringBoot: Could not resolve placeholder 'XXXX' in value ${XXXX}相关推荐

Springboot Could not resolve placeholder ‘spring.data.mongodb.database’ in value “${spring.data.mong
Springboot Could not resolve placeholder 'spring.data.mongodb.database' in value "${spring.data ...
【解决方法汇总】SpringBoot项目报错 Could not resolve placeholder ‘‘ in value “${}“
SpringBoot项目启动报错 Could not resolve placeholder 'show.tips.text' in value "${show.tips.text}&quo ...
SpringBoot启动报错Could not resolve placeholder ‘XXX.XXX‘ in value
SpringBoot启动项目时报错: Exception encountered during context initialization - cancelling refresh attempt: ...
springboot启动错误 Could not resolve placeholder
Could not resolve placeholder 'spring.datasource.druid.initialSize' in value "${spring.datasour ...
springboot启动突然报错Could not resolve placeholder 'spring.datasource.driver-class-name'
之前好好的项目,今天启动突然报错Could not resolve placeholder 'spring.datasource.driver-class-name' 按照网友的方法,添加了 @Pro ...
Could not resolve placeholder ‘project.version‘ in value “${project.version}”
使用版本: SpringBoot:2.1.18.RELEASESpringCloud: Greenwich.SR6SpringCloud Alibaba: 2.1.2.RELEASEjasypt-sp ...
Could not resolve placeholder 占位符不能被解析
Could not resolve placeholder 'active.logging.path' in value "${active.logging.path}" spri ...
SpringCloud读取Nacos配置中心报错：Could not resolve placeholder ‘xxx’ in value ‘${xxx}
hello,我是灰小猿,一个超会写bug的程序员! 近期在写一个spring cloud Alibaba读取Nacos配置中心远程配置文件的内容时,出现了几个比较坑的bug,在此记录一下,帮大家避避坑 ...
查看提供者的端口时报Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder ‘server.port‘
@Value("${server.port}")private String port; @Value("${server.port}") 表示获取属性文件ym ...

SpringBoot: Could not resolve placeholder 'XXXX' in value ${XXXX}

SpringBoot: Could not resolve placeholder 'XXXX' in value ${XXXX}相关推荐

最新文章

热门文章