java.lang.IllegalStateException: Failed to load property source from location 'classpath:/application-dev.yml'

时间：2021-03-30 04:18:45

如果你的项目没有配置错误，配置文件名称也正常，还出现这个问题，那一定是你的yml文件编码的问题

先附上一张项目架构图

java.lang.IllegalStateException: Failed to load property source from location 'classpath:/application-dev.yml'

当我启动服务器寻找配置文件的时候，服务器提示这样的错误信息

java.lang.IllegalStateException: Failed to load property source from location 'classpath:/application-dev.yml'

    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:549)

    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.loadForFileExtension(ConfigFileApplicationListener.java:488)

    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:468)

    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.lambda$null$6(ConfigFileApplicationListener.java:450)

    at java.lang.Iterable.forEach(Iterable.java:75)

    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.lambda$load$7(ConfigFileApplicationListener.java:449)

    at java.lang.Iterable.forEach(Iterable.java:75)

    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:446)

    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:336)

    at org.springframework.boot.context.config.ConfigFileApplicationListener.addPropertySources(ConfigFileApplicationListener.java:215)

    at org.springframework.boot.context.config.ConfigFileApplicationListener.postProcessEnvironment(ConfigFileApplicationListener.java:198)

    at org.springframework.boot.context.config.ConfigFileApplicationListener.onApplicationEnvironmentPreparedEvent(ConfigFileApplicationListener.java:185)

    at org.springframework.boot.context.config.ConfigFileApplicationListener.onApplicationEvent(ConfigFileApplicationListener.java:171)

    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:127)

    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:361)

    at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)

    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1258)

    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1246)

    at com.dawn.rockcandy.RockCandyApplication.main(RockCandyApplication.java:11)

Caused by: org.yaml.snakeyaml.error.YAMLException: java.nio.charset.MalformedInputException: Input length = 1

    at org.yaml.snakeyaml.reader.StreamReader.update(StreamReader.java:254)

    at org.yaml.snakeyaml.reader.StreamReader.<init>(StreamReader.java:58)

    at org.yaml.snakeyaml.Yaml.loadAll(Yaml.java:537)

    at org.springframework.beans.factory.config.YamlProcessor.process(YamlProcessor.java:166)

    at org.springframework.beans.factory.config.YamlProcessor.process(YamlProcessor.java:139)

    at org.springframework.boot.env.OriginTrackedYamlLoader.load(OriginTrackedYamlLoader.java:75)

    at org.springframework.boot.env.YamlPropertySourceLoader.load(YamlPropertySourceLoader.java:50)

    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.loadDocuments(ConfigFileApplicationListener.java:567)

    at org.springframework.boot.context.config.ConfigFileApplicationListener$Loader.load(ConfigFileApplicationListener.java:523)

    ... 23 common frames omitted

Caused by: java.nio.charset.MalformedInputException: Input length = 1

    at java.nio.charset.CoderResult.throwException(CoderResult.java:281)

    at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:339)

    at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)

    at java.io.InputStreamReader.read(InputStreamReader.java:184)

    at org.yaml.snakeyaml.reader.UnicodeReader.read(UnicodeReader.java:125)

    at org.yaml.snakeyaml.reader.StreamReader.update(StreamReader.java:223)

    ... 31 common frames omitted

我的application.yml和application-dev.yml是没有配置错误的，而且我的文件名称是完全正常的，编译后的target文件里面也有application-dev.yml，我就很纳闷问题出在哪儿了！

打开target文件，查看application-dev.yml文件，发现这个文件居然是空的，说明这个文件编译失败了！！！

最后找到问题，因为这个文件的编码格式是GBK，项目的编码格式是UTF-8，里面有注释，注释乱码，导致编译失败

1.修改你的编码格式

2.删除注释

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