Application run failed .ParserException: while parsing a block mapping in 'reader'

[root@ecm-8cc1 logs]# tail -f -n 1000 sys-error.log
17:26:46.060 [main] ERROR o.s.b.SpringApplication - [reportFailure,870] - Application run failed
org.yaml.snakeyaml.parser.ParserException: while parsing a block mapping
in 'reader', line 2, column 1:
jxd:
^
expected <block end>, but found '<block mapping start>'
in 'reader', line 28, column 3:
servlet:
^

at org.yaml.snakeyaml.parser.ParserImpl$ParseBlockMappingKey.produce(ParserImpl.java:617)
at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:165)
at org.yaml.snakeyaml.comments.CommentEventsCollector$1.peek(CommentEventsCollector.java:59)
at org.yaml.snakeyaml.comments.CommentEventsCollector$1.peek(CommentEventsCollector.java:45)
at org.yaml.snakeyaml.comments.CommentEventsCollector.collectEvents(CommentEventsCollector.java:140)
at org.yaml.snakeyaml.comments.CommentEventsCollector.collectEvents(CommentEventsCollector.java:119)
at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:292)
at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:195)
at org.yaml.snakeyaml.composer.Composer.composeValueNode(Composer.java:313)
at org.yaml.snakeyaml.composer.Composer.composeMappingChildren(Composer.java:304)
at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:288)
at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:195)
at org.yaml.snakeyaml.composer.Composer.getNode(Composer.java:115)
at org.yaml.snakeyaml.constructor.BaseConstructor.getData(BaseConstructor.java:135)
at org.springframework.boot.env.OriginTrackedYamlLoader$OriginTrackingConstructor.getData(OriginTrackedYamlLoader.java:103)
at org.yaml.snakeyaml.Yaml$1.next(Yaml.java:512)
at org.springframework.beans.factory.config.YamlProcessor.process(YamlProcessor.java:199)
at org.springframework.beans.factory.config.YamlProcessor.process(YamlProcessor.java:166)
at org.springframework.boot.env.OriginTrackedYamlLoader.load(OriginTrackedYamlLoader.java:88)
at org.springframework.boot.env.YamlPropertySourceLoader.load(YamlPropertySourceLoader.java:50)
at org.springframework.boot.context.config.StandardConfigDataLoader.load(StandardConfigDataLoader.java:54)
at org.springframework.boot.context.config.StandardConfigDataLoader.load(StandardConfigDataLoader.java:36)
at org.springframework.boot.context.config.ConfigDataLoaders.load(ConfigDataLoaders.java:107)
at org.springframework.boot.context.config.ConfigDataImporter.load(ConfigDataImporter.java:128)
at org.springframework.boot.context.config.ConfigDataImporter.resolveAndLoad(ConfigDataImporter.java:86)
at org.springframework.boot.context.config.ConfigDataEnvironmentContributors.withProcessedImports(ConfigDataEnvironmentContributors.java:116)
at org.springframework.boot.context.config.ConfigDataEnvironment.processInitial(ConfigDataEnvironment.java:240)
at org.springframework.boot.context.config.ConfigDataEnvironment.processAndApply(ConfigDataEnvironment.java:227)
at org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor.postProcessEnvironment(ConfigDataEnvironmentPostProcessor.java:102)
at org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor.postProcessEnvironment(ConfigDataEnvironmentPostProcessor.java:94)
at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEnvironmentPreparedEvent(EnvironmentPostProcessorApplicationListener.java:102)
at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEvent(EnvironmentPostProcessorApplicationListener.java:87)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:178)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:171)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:145)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:133)
at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:82)
at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared$2(SpringApplicationRunListeners.java:63)
at java.util.ArrayList.forEach(ArrayList.java:1259)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:117)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:111)
at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:62)
at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:379)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:337)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1370)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1359)
at com.jxd.JxdApplication.main(JxdApplication.java:25)
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.loader.MainMethodRunner.run(MainMethodRunner.java:49)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:108)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88)

解决方案： application.yml 参数属性，缩进格式有问题，要保证空2个，多一个少一个都有问题。