java.nio.charset.MalformedInputException: Input length = 1或Input length = 2

---

问题复现

C:\Users\jmw\.jdks\openjdk-20\bin\java.exe -Dvisualvm.id=1801712690404600 -XX:TieredStopAtLevel=1 -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dspring.jmx.enabled=true -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true -javaagent:D:\tools\ideaIU-2022.2.win\lib\idea_rt.jar=53438:D:\tools\ideaIU-2022.2.win\bin -Dfile.encoding=UTF-8 -classpath 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jar;D:\work\maven\repo\commons-dbutils\commons-dbutils\1.7\commons-dbutils-1.7.jar;D:\work\maven\repo\com\sun\jna\jna\3.0.9\jna-3.0.9.jar;D:\work\maven\repo\com\alibaba\fastjson\1.2.76\fastjson-1.2.76.jar;D:\work\maven\repo\org\yaml\snakeyaml\1.33\snakeyaml-1.33.jar;D:\work\maven\repo\org\jdom\jdom\2.0.2\jdom-2.0.2.jar;D:\work\maven\repo\cn\hutool\hutool-all\5.7.19\hutool-all-5.7.19.jar;D:\work\maven\repo\javax\xml\jaxb-impl\2.1\jaxb-impl-2.1.jar;D:\work\maven\repo\javax\xml\bind\jaxb-api\2.1\jaxb-api-2.1.jar;D:\work\maven\repo\javax\xml\stream\stax-api\1.0-2\stax-api-1.0-2.jar;D:\work\maven\repo\javax\xml\ws\jaxws-api\2.3.1\jaxws-api-2.3.1.jar;D:\work\maven\repo\javax\annotation\javax.annotation-api\1.3.2\javax.annotation-api-1.3.2.jar;D:\work\maven\repo\javax\jws\javax.jws-api\1.1\javax.jws-api-1.1.jar;D:\work\maven\repo\com\sun\xml\bind\jaxb-core\2.3.0.1\jaxb-core-2.3.0.1.jar;D:\work\maven\repo\javax\xml\soap\javax.xml.soap-api\1.4.0\javax.xml.soap-api-1.4.0.jar;D:\work\maven\repo\javax\activation\activation\1.1.1\activation-1.1.1.jar;D:\work\maven\repo\org\apache-extras\beanshell\bsh\2.0b6\bsh-2.0b6.jar;D:\work\maven\repo\bsf\bsf\2.4.0\bsf-2.4.0.jar;D:\work\maven\repo\commons-logging\commons-logging\1.0.4\commons-logging-1.0.4.jar;D:\work\maven\repo\org\projectlombok\lombok\1.18.26\lombok-1.18.26.jar;D:\work\maven\repo\com\github\xiaoymin\knife4j-openapi3-jakarta-spring-boot-starter\4.0.0\knife4j-openapi3-jakarta-spring-boot-starter-4.0.0.jar;D:\work\maven\repo\com\github\xiaoymin\knife4j-core\4.0.0\knife4j-core-4.0.0.jar;D:\work\maven\repo\com\github\xiaoymin\knife4j-openapi3-ui\4.0.0\knife4j-openapi3-ui-4.0.0.jar;D:\work\maven\repo\org\springdoc\springdoc-openapi-starter-common\2.0.0\springdoc-openapi-starter-common-2.0.0.jar;D:\work\maven\repo\io\swagger\core\v3\swagger-core-jakarta\2.2.7\swagger-core-jakarta-2.2.7.jar;D:\work\maven\repo\jakarta\validation\jakarta.validation-api\3.0.2\jakarta.validation-api-3.0.2.jar;D:\work\maven\repo\org\springdoc\springdoc-openapi-starter-webflux-ui\2.0.0\springdoc-openapi-starter-webflux-ui-2.0.0.jar;D:\work\maven\repo\org\springdoc\springdoc-openapi-starter-webflux-api\2.0.0\springdoc-openapi-starter-webflux-api-2.0.0.jar;D:\work\maven\repo\org\springframework\spring-webflux\6.0.2\spring-webflux-6.0.2.jar;D:\work\maven\repo\io\projectreactor\reactor-core\3.5.0\reactor-core-3.5.0.jar;D:\work\maven\repo\org\reactivestreams\reactive-streams\1.0.4\reactive-streams-1.0.4.jar;D:\work\maven\repo\org\webjars\swagger-ui\4.15.5\swagger-ui-4.15.5.jar;D:\work\maven\repo\org\webjars\webjars-locator-core\0.52\webjars-locator-core-0.52.jar;D:\work\maven\repo\io\github\classgraph\classgraph\4.8.149\classgraph-4.8.149.jar;D:\work\maven\repo\org\springdoc\springdoc-openapi-starter-webmvc-ui\2.0.0\springdoc-openapi-starter-webmvc-ui-2.0.0.jar;D:\work\maven\repo\org\springdoc\springdoc-openapi-starter-webmvc-api\2.0.0\springdoc-openapi-starter-webmvc-api-2.0.0.jar;D:\work\maven\repo\io\swagger\core\v3\swagger-annotations-jakarta\2.2.7\swagger-annotations-jakarta-2.2.7.jar;D:\work\maven\repo\io\swagger\core\v3\swagger-models-jakarta\2.2.7\swagger-models-jakarta-2.2.7.jar;D:\work\maven\repo\com\baomidou\mybatis-plus-boot-starter\3.4.1\mybatis-plus-boot-starter-3.4.1.jar;D:\work\maven\repo\com\baomidou\mybatis-plus\3.4.1\mybatis-plus-3.4.1.jar;D:\work\maven\repo\org\springframework\boot\spring-boot-autoconfigure\3.0.0\spring-boot-autoconfigure-3.0.0.jar;D:\work\maven\repo\org\springframework\boot\spring-boot-starter-jdbc\3.0.0\spring-boot-starter-jdbc-3.0.0.jar;D:\work\maven\repo\com\zaxxer\HikariCP\5.0.1\HikariCP-5.0.1.jar;D:\work\maven\repo\org\springframework\spring-jdbc\6.0.2\spring-jdbc-6.0.2.jar;D:\work\maven\repo\org\springframework\spring-tx\6.0.2\spring-tx-6.0.2.jar;D:\work\maven\repo\com\baomidou\mybatis-plus-generator\3.4.1\mybatis-plus-generator-3.4.1.jar;D:\work\maven\repo\com\baomidou\mybatis-plus-extension\3.4.1\mybatis-plus-extension-3.4.1.jar;D:\work\maven\repo\com\baomidou\mybatis-plus-core\3.4.1\mybatis-plus-core-3.4.1.jar;D:\work\maven\repo\com\baomidou\mybatis-plus-annotation\3.4.1\mybatis-plus-annotation-3.4.1.jar;D:\work\maven\repo\com\github\jsqlparser\jsqlparser\3.2\jsqlparser-3.2.jar;D:\work\maven\repo\org\mybatis\mybatis\3.5.6\mybatis-3.5.6.jar;D:\work\maven\repo\org\mybatis\mybatis-spring\2.0.5\mybatis-spring-2.0.5.jar;D:\work\maven\repo\org\springframework\boot\spring-boot-starter-security\3.0.0\spring-boot-starter-security-3.0.0.jar;D:\work\maven\repo\org\springframework\spring-aop\6.0.2\spring-aop-6.0.2.jar;D:\work\maven\repo\org\springframework\security\spring-security-config\6.0.0\spring-security-config-6.0.0.jar;D:\work\maven\repo\org\springframework\security\spring-security-core\6.0.0\spring-security-core-6.0.0.jar;D:\work\maven\repo\org\springframework\security\spring-security-crypto\6.0.0\spring-security-crypto-6.0.0.jar;D:\work\maven\repo\org\springframework\security\spring-security-web\6.0.0\spring-security-web-6.0.0.jar;D:\work\maven\repo\org\sp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com.cn.jmw.RegressionSearchTree
16:20:37.775 [main] ERROR org.springframework.boot.SpringApplication - Application run failed
org.yaml.snakeyaml.error.YAMLException: java.nio.charset.MalformedInputException: Input length = 1
	at org.yaml.snakeyaml.reader.StreamReader.update(StreamReader.java:211)
	at org.yaml.snakeyaml.reader.StreamReader.ensureEnoughData(StreamReader.java:169)
	at org.yaml.snakeyaml.reader.StreamReader.ensureEnoughData(StreamReader.java:164)
	at org.yaml.snakeyaml.reader.StreamReader.peek(StreamReader.java:119)
	at org.yaml.snakeyaml.scanner.ScannerImpl.scanToNextToken(ScannerImpl.java:1229)
	at org.yaml.snakeyaml.scanner.ScannerImpl.fetchMoreTokens(ScannerImpl.java:345)
	at org.yaml.snakeyaml.scanner.ScannerImpl.checkToken(ScannerImpl.java:263)
	at org.yaml.snakeyaml.parser.ParserImpl$ParseImplicitDocumentStart.produce(ParserImpl.java:235)
	at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:185)
	at org.yaml.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:175)
	at org.yaml.snakeyaml.composer.Composer.checkNode(Composer.java:112)
	at org.yaml.snakeyaml.constructor.BaseConstructor.checkData(BaseConstructor.java:155)
	at org.yaml.snakeyaml.Yaml$1.hasNext(Yaml.java:494)
	at org.springframework.beans.factory.config.YamlProcessor.process(YamlProcessor.java:198)
	at org.springframework.beans.factory.config.YamlProcessor.process(YamlProcessor.java:166)
	at org.springframework.boot.env.OriginTrackedYamlLoader.load(OriginTrackedYamlLoader.java:83)
	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:95)
	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:115)
	at org.springframework.boot.context.config.ConfigDataEnvironment.processInitial(ConfigDataEnvironment.java:242)
	at org.springframework.boot.context.config.ConfigDataEnvironment.processAndApply(ConfigDataEnvironment.java:229)
	at org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor.postProcessEnvironment(ConfigDataEnvironmentPostProcessor.java:96)
	at org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor.postProcessEnvironment(ConfigDataEnvironmentPostProcessor.java:89)
	at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEnvironmentPreparedEvent(EnvironmentPostProcessorApplicationListener.java:109)
	at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEvent(EnvironmentPostProcessorApplicationListener.java:94)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:131)
	at org.springframework.boot.context.event.EventPublishingRunListener.multicastInitialEvent(EventPublishingRunListener.java:136)
	at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:81)
	at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared$2(SpringApplicationRunListeners.java:64)
	at java.base/java.lang.Iterable.forEach(Iterable.java:75)
	at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:118)
	at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:112)
	at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:63)
	at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:352)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1302)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1291)
	at com.cn.jmw.RegressionSearchTree.main(RegressionSearchTree.java:16)
Caused by: java.nio.charset.MalformedInputException: Input length = 1
	at java.base/java.nio.charset.CoderResult.throwException(CoderResult.java:274)
	at java.base/sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:388)
	at java.base/sun.nio.cs.StreamDecoder.lockedRead(StreamDecoder.java:219)
	at java.base/sun.nio.cs.StreamDecoder.read(StreamDecoder.java:173)
	at java.base/java.io.InputStreamReader.read(InputStreamReader.java:189)
	at org.yaml.snakeyaml.reader.UnicodeReader.read(UnicodeReader.java:118)
	at org.yaml.snakeyaml.reader.StreamReader.update(StreamReader.java:176)
	... 44 common frames omitted

Process finished with exit code 1

1.原因

是因为配置文件里面有中文或者是你的编码格式不正确导致

2.解决方案

2.1 干掉yml中的中文相关字符包括注释中的

改变你的编码格式改为UTF-8，如果还不行，那就是你的配置文件里面有汉字，注释也算，你可以把你所有配置文件看一下，把汉字去掉就ok了。是你项目启动时加载的配置文件。
这招百试百灵基本。

2.2 就是得用中文，或者必须有注释

File -> Settings -> File Encodings
全部修改UTF-8

2.3 如果上面那个都没法解决你的问题，终极方案maven.compiler.encoding

如果是聚合项目就在最高级父类POM加入

编译时的编码 这里就是你运行项目，会给你的文件进行编码
UTF-8

3 运行项目

如有错误欢迎指正