Failed to load property source from location 'classpath:/application.yml'

来源：互联网发布：天眼查官网软件下载编辑：程序博客网时间：2024/05/22 13:08

今天尝试着从 yml 文件读取数据加载到 JavaBean对象中报错：

14:12:20.559 [main] ERROR org.springframework.boot.SpringApplication - Application startup failedjava.lang.IllegalStateException: Failed to load property source from location 'classpath:/application.yml'at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.loadIntoGroup(ConfigFileApplicationListener.java:476)at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:465)at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:386)at org.springframework.boot.context.config.ConfigFileApplicationListener.addPropertySources(ConfigFileApplicationListener.java:225)at org.springframework.boot.context.config.ConfigFileApplicationListener.postProcessEnvironment(ConfigFileApplicationListener.java:195)at org.springframework.boot.context.config.ConfigFileApplicationListener.onApplicationEnvironmentPreparedEvent(ConfigFileApplicationListener.java:182)at org.springframework.boot.context.config.ConfigFileApplicationListener.onApplicationEvent(ConfigFileApplicationListener.java:168)at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:122)at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:74)at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:54)at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:325)at org.springframework.boot.SpringApplication.run(SpringApplication.java:296)at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118)at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107)at testSpringBoot.Application.main(Application.java:14)Caused by: org.yaml.snakeyaml.scanner.ScannerException: mapping values are not allowed here in 'reader', line 2, column 9:     servers:            ^at org.yaml.snakeyaml.scanner.ScannerImpl.fetchValue(ScannerImpl.java:871)at org.yaml.snakeyaml.scanner.ScannerImpl.fetchMoreTokens(ScannerImpl.java:360)at org.yaml.snakeyaml.scanner.ScannerImpl.checkToken(ScannerImpl.java:226)at org.yaml.snakeyaml.parser.ParserImpl$ParseBlockMappingKey.produce(ParserImpl.java:557)at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:157)at org.yaml.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:147)at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:224)at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:155)at org.yaml.snakeyaml.composer.Composer.composeDocument(Composer.java:122)at org.yaml.snakeyaml.composer.Composer.getNode(Composer.java:84)at org.yaml.snakeyaml.constructor.BaseConstructor.getData(BaseConstructor.java:104)at org.yaml.snakeyaml.Yaml$1.next(Yaml.java:471)at org.springframework.beans.factory.config.YamlProcessor.process(YamlProcessor.java:160)at org.springframework.beans.factory.config.YamlProcessor.process(YamlProcessor.java:138)at org.springframework.boot.env.YamlPropertySourceLoader$Processor.process(YamlPropertySourceLoader.java:101)at org.springframework.boot.env.YamlPropertySourceLoader.load(YamlPropertySourceLoader.java:58)at org.springframework.boot.env.PropertySourcesLoader.load(PropertySourcesLoader.java:127)at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.doLoadIntoGroup(ConfigFileApplicationListener.java:490)at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.loadIntoGroup(ConfigFileApplicationListener.java:473)... 17 common frames omitted

最终原因居然是： yml文件的注释是 # 而不是 //

错误写法：

my:  // 注释 servers:  - dev.bar.com  - foo.bar.com  - jiaobuchong.com

正确写法：

my:  # 注释 servers:  - dev.bar.com  - foo.bar.com  - jiaobuchong.com

总结：大意了，类似错误要检查该文件的内容格式是否错误。

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