druid报错 – 源码巴士

Springboot 在添加druid配置的时候报错

"C:\Program Files\Java\jdk1.8.0_181\bin\java.exe" -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:52228,suspend=y,server=n -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dspring.jmx.enabled=true -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true -javaagent:C:\Users\WTW\.IntelliJIdea2019.2\system\captureAgent\debugger-agent.jar -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_181\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_181\jre\lib\rt.jar;D:\IDEAworkspace\fleamarket\target\classes;C:\Users\WTW\.m2\repository\org\springframework\boot\spring-boot-starter-security\2.4.2\spring-boot-starter-security-2.4.2.jar;C:\Users\WTW\.m2\repository\org\springframework\boot\spring-boot-starter\2.4.2\spring-boot-starter-2.4.2.jar;C:\Users\WTW\.m2\repository\org\springframework\boot\spring-boot-starter-logging\2.4.2\spring-boot-starter-logging-2.4.2.jar;C:\Users\WTW\.m2\repository\ch\qos\logback\logback-classic\1.2.3\logback-classic-1.2.3.jar;C:\Users\WTW\.m2\repository\ch\qos\logback\logback-core\1.2.3\logback-core-1.2.3.jar;C:\Users\WTW\.m2\repository\org\apache\logging\log4j\log4j-to-slf4j\2.13.3\log4j-to-slf4j-2.13.3.jar;C:\Users\WTW\.m2\repository\org\apache\logging\log4j\log4j-api\2.13.3\log4j-api-2.13.3.jar;C:\Users\WTW\.m2\repository\org\slf4j\jul-to-slf4j\1.7.30\jul-to-slf4j-1.7.30.jar;C:\Users\WTW\.m2\repository\jakarta\annotation\jakarta.annotation-api\1.3.5\jakarta.annotation-api-1.3.5.jar;C:\Users\WTW\.m2\repository\org\yaml\snakeyaml\1.27\snakeyaml-1.27.jar;C:\Users\WTW\.m2\repository\org\springframework\spring-aop\5.3.3\spring-aop-5.3.3.jar;C:\Users\WTW\.m2\repository\org\springframework\spring-beans\5.3.3\spring-beans-5.3.3.jar;C:\Users\WTW\.m2\repository\org\springframework\security\spring-security-config\5.4.2\spring-security-config-5.4.2.jar;C:\Users\WTW\.m2\repository\org\springframework\security\spring-security-core\5.4.2\spring-security-core-5.4.2.jar;C:\Users\WTW\.m2\repository\org\springframework\spring-context\5.3.3\spring-context-5.3.3.jar;C:\Users\WTW\.m2\repository\org\springframework\security\spring-security-web\5.4.2\spring-security-web-5.4.2.jar;C:\Users\WTW\.m2\repository\org\springframework\spring-expression\5.3.3\spring-expression-5.3.3.jar;C:\Users\WTW\.m2\repository\org\springframework\boot\spring-boot-starter-data-jpa\2.4.2\spring-boot-starter-data-jpa-2.4.2.jar;C:\Users\WTW\.m2\repository\org\springframework\boot\spring-boot-starter-aop\2.4.2\spring-boot-starter-aop-2.4.2.jar;C:\Users\WTW\.m2\repository\org\aspectj\aspectjweaver\1.9.6\aspectjweaver-1.9.6.jar;C:\Users\WTW\.m2\repository\jakarta\transaction\jakarta.transaction-api\1.3.3\jakarta.transaction-api-1.3.3.jar;C:\Users\WTW\.m2\repository\jakarta\persistence\jakarta.persistence-api\2.2.3\jakarta.persistence-api-2.2.3.jar;C:\Users\WTW\.m2\repository\org\hibernate\hibernate-core\5.4.27.Final\hibernate-core-5.4.27.Final.jar;C:\Users\WTW\.m2\repository\org\jboss\logging\jboss-logging\3.4.1.Final\jboss-logging-3.4.1.Final.jar;C:\Users\WTW\.m2\repository\org\javassist\javassist\3.27.0-GA\javassist-3.27.0-GA.jar;C:\Users\WTW\.m2\repository\net\bytebuddy\byte-buddy\1.10.19\byte-buddy-1.10.19.jar;C:\Users\WTW\.m2\repository\antlr\antlr\2.7.7\antlr-2.7.7.jar;C:\Users\WTW\.m2\repository\org\jboss\jandex\2.1.3.Final\jandex-2.1.3.Final.jar;C:\Users\WTW\.m2\repository\org\dom4j\dom4j\2.1.3\dom4j-2.1.3.jar;C:\Users\WTW\.m2\repository\org\hibernate\common\hibernate-commons-annotations\5.1.2.Final\hibernate-commons-annotations-5.1.2.Final.jar;C:\Users\WTW\.m2\repository\org\glassfish\jaxb\jaxb-runtime\2.3.3\jaxb-runtime-2.3.3.jar;C:\Users\WTW\.m2\repository\org\glassfish\jaxb\txw2\2.3.3\txw2-2.3.3.jar;C:\Users\WTW\.m2\repository\com\sun\istack\istack-commons-runtime\3.0.11\istack-commons-runtime-3.0.11.jar;C:\Users\WTW\.m2\repository\com\sun\activation\jakarta.activation\1.2.2\jakarta.activation-1.2.2.jar;C:\Users\WTW\.m2\repository\org\springframework\data\spring-data-jpa\2.4.3\spring-data-jpa-2.4.3.jar;C:\Users\WTW\.m2\repository\org\springframework\data\spring-data-commons\2.4.3\spring-data-commons-2.4.3.jar;C:\Users\WTW\.m2\repository\org\springframework\spring-orm\5.3.3\spring-orm-5.3.3.jar;C:\Users\WTW\.m2\repository\org\springframework\spring-tx\5.3.3\spring-tx-5.3.3.jar;C:\Users\WTW\.m2\repository\org\springframework\spring-aspects\5.3.3\spring-aspects-5.3.3.jar;C:\Users\WTW\.m2\repository\org\springframework\boot\spring-boot-starter-jdbc\2.4.2\spring-boot-starter-jdbc-2.4.2.jar;C:\Users\WTW\.m2\repository\com\zaxxer\HikariCP\3.4.5\HikariCP-3.4.5.jar;C:\Users\WTW\.m2\repository\org\springframework\spring-jdbc\5.3.3\spring-jdbc-5.3.3.jar;C:\Users\WTW\.m2\repository\org\springframework\boot\spring-boot-starter-thymeleaf\2.4.2\spring-boot-starter-thymeleaf-2.4.2.jar;C:\Users\WTW\.m2\repository\org\thymeleaf\thymeleaf-spring5\3.0.12.RELEASE\thymeleaf-spring5-3.0.12.RELEASE.jar;C:\Users\WTW\.m2\repository\org\thymeleaf\thymeleaf\3.0.12.RELEASE\thymeleaf-3.0.12.RELEASE.jar;C:\Users\WTW\.m2\repository\org\attoparser\attoparser\2.0.5.RELEASE\attoparser-2.0.5.RELEASE.jar;C:\Users\WTW\.m2\repository\org\unbescape\unbescape\1.1.6.RELEASE\unbescape-1.1.6.RELEASE.jar;C:\Users\WTW\.m2\repository\org\thymeleaf\extras\thymeleaf-extras-java8time\3.0.4.RELEASE\thymeleaf-extras-java8time-3.0.4.RELEASE.jar;C:\Users\WTW\.m2\repository\org\springframework\boot\spring-boot-starter-websocket\2.4.2\spring-boot-starter-websocket-2.4.2.jar;C:\Users\WTW\.m2\repository\org\springframework\spring-messaging\5.3.3\spring-messaging-5.3.3.jar;C:\Users\WTW\.m2\repository\org\springframework\spring-websocket\5.3.3\spring-websocket-5.3.3.jar;C:\Users\WTW\.m2\repository\org\springframework\boot\spring-boot-starter-web\2.4.2\spring-boot-starter-web-2.4.2.jar;C:\Users\WTW\.m2\repository\org\springframework\boot\spring-boot-starter-json\2.4.2\spring-boot-starter-json-2.4.2.jar;C:\Users\WTW\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.11.4\jackson-databind-2.11.4.jar;C:\Users\WTW\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.11.4\jackson-core-2.11.4.jar;C:\Users\WTW\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.11.4\jackson-datatype-jdk8-2.11.4.jar;C:\Users\WTW\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.11.4\jackson-datatype-jsr310-2.11.4.jar;C:\Users\WTW\.m2\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.11.4\jackson-module-parameter-names-2.11.4.jar;C:\Users\WTW\.m2\repository\org\springframework\boot\spring-boot-starter-tomcat\2.4.2\spring-boot-starter-tomcat-2.4.2.jar;C:\Users\WTW\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\9.0.41\tomcat-embed-core-9.0.41.jar;C:\Users\WTW\.m2\repository\org\glassfish\jakarta.el\3.0.3\jakarta.el-3.0.3.jar;C:\Users\WTW\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\9.0.41\tomcat-embed-websocket-9.0.41.jar;C:\Users\WTW\.m2\repository\org\springframework\spring-web\5.3.3\spring-web-5.3.3.jar;C:\Users\WTW\.m2\repository\org\springframework\spring-webmvc\5.3.3\spring-webmvc-5.3.3.jar;C:\Users\WTW\.m2\repository\org\mybatis\spring\boot\mybatis-spring-boot-starter\2.1.4\mybatis-spring-boot-starter-2.1.4.jar;C:\Users\WTW\.m2\repository\org\mybatis\spring\boot\mybatis-spring-boot-autoconfigure\2.1.4\mybatis-spring-boot-autoconfigure-2.1.4.jar;C:\Users\WTW\.m2\repository\org\mybatis\mybatis\3.5.6\mybatis-3.5.6.jar;C:\Users\WTW\.m2\repository\org\mybatis\mybatis-spring\2.0.6\mybatis-spring-2.0.6.jar;C:\Users\WTW\.m2\repository\jakarta\xml\bind\jakarta.xml.bind-api\2.3.3\jakarta.xml.bind-api-2.3.3.jar;C:\Users\WTW\.m2\repository\jakarta\activation\jakarta.activation-api\1.2.2\jakarta.activation-api-1.2.2.jar;C:\Users\WTW\.m2\repository\org\springframework\spring-core\5.3.3\spring-core-5.3.3.jar;C:\Users\WTW\.m2\repository\org\springframework\spring-jcl\5.3.3\spring-jcl-5.3.3.jar;C:\Users\WTW\.m2\repository\org\springframework\boot\spring-boot-autoconfigure\2.4.2\spring-boot-autoconfigure-2.4.2.jar;C:\Users\WTW\.m2\repository\org\springframework\boot\spring-boot\2.4.2\spring-boot-2.4.2.jar;C:\Users\WTW\.m2\repository\mysql\mysql-connector-java\8.0.22\mysql-connector-java-8.0.22.jar;C:\Users\WTW\.m2\repository\io\springfox\springfox-swagger2\2.6.1\springfox-swagger2-2.6.1.jar;C:\Users\WTW\.m2\repository\io\swagger\swagger-annotations\1.5.10\swagger-annotations-1.5.10.jar;C:\Users\WTW\.m2\repository\io\swagger\swagger-models\1.5.10\swagger-models-1.5.10.jar;C:\Users\WTW\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.11.4\jackson-annotations-2.11.4.jar;C:\Users\WTW\.m2\repository\io\springfox\springfox-spi\2.6.1\springfox-spi-2.6.1.jar;C:\Users\WTW\.m2\repository\io\springfox\springfox-core\2.6.1\springfox-core-2.6.1.jar;C:\Users\WTW\.m2\repository\io\springfox\springfox-schema\2.6.1\springfox-schema-2.6.1.jar;C:\Users\WTW\.m2\repository\io\springfox\springfox-swagger-common\2.6.1\springfox-swagger-common-2.6.1.jar;C:\Users\WTW\.m2\repository\io\springfox\springfox-spring-web\2.6.1\springfox-spring-web-2.6.1.jar;C:\Users\WTW\.m2\repository\com\google\guava\guava\18.0\guava-18.0.jar;C:\Users\WTW\.m2\repository\com\fasterxml\classmate\1.5.1\classmate-1.5.1.jar;C:\Users\WTW\.m2\repository\org\slf4j\slf4j-api\1.7.30\slf4j-api-1.7.30.jar;C:\Users\WTW\.m2\repository\org\springframework\plugin\spring-plugin-core\1.2.0.RELEASE\spring-plugin-core-1.2.0.RELEASE.jar;C:\Users\WTW\.m2\repository\org\springframework\plugin\spring-plugin-metadata\1.2.0.RELEASE\spring-plugin-metadata-1.2.0.RELEASE.jar;C:\Users\WTW\.m2\repository\org\mapstruct\mapstruct\1.0.0.Final\mapstruct-1.0.0.Final.jar;C:\Users\WTW\.m2\repository\io\springfox\springfox-swagger-ui\2.6.1\springfox-swagger-ui-2.6.1.jar;C:\Users\WTW\.m2\repository\javax\inject\javax.inject\1\javax.inject-1.jar;C:\Users\WTW\.m2\repository\com\github\pagehelper\pagehelper-spring-boot-starter\1.2.10\pagehelper-spring-boot-starter-1.2.10.jar;C:\Users\WTW\.m2\repository\com\github\pagehelper\pagehelper-spring-boot-autoconfigure\1.2.10\pagehelper-spring-boot-autoconfigure-1.2.10.jar;C:\Users\WTW\.m2\repository\com\github\pagehelper\pagehelper\5.1.8\pagehelper-5.1.8.jar;C:\Users\WTW\.m2\repository\com\github\jsqlparser\jsqlparser\1.2\jsqlparser-1.2.jar;C:\Users\WTW\.m2\repository\com\alibaba\druid\1.2.4\druid-1.2.4.jar;C:\Users\WTW\.m2\repository\javax\annotation\javax.annotation-api\1.3.2\javax.annotation-api-1.3.2.jar;C:\Users\WTW\.m2\repository\com\alibaba\druid-spring-boot-starter\1.2.4\druid-spring-boot-starter-1.2.4.jar;C:\Users\WTW\.m2\repository\org\mybatis\generator\mybatis-generator-core\1.3.3\mybatis-generator-core-1.3.3.jar;D:\IntelliJ IDEA 2019.2.1\lib\idea_rt.jar" com.FleamarketApplication
Connected to the target VM, address: '127.0.0.1:52228', transport: 'socket'

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( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
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 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v2.4.2)

2021-02-06 13:58:31.688  INFO 14428 --- [           main] com.FleamarketApplication                : Starting FleamarketApplication using Java 1.8.0_181 on DESKTOP-SNVFE7L with PID 14428 (D:\IDEAworkspace\fleamarket\target\classes started by WTW in D:\IDEAworkspace\fleamarket)
2021-02-06 13:58:31.692  INFO 14428 --- [           main] com.FleamarketApplication                : The following profiles are active: dev
2021-02-06 13:58:36.470  INFO 14428 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2021-02-06 13:58:38.963  INFO 14428 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 2483 ms. Found 0 JPA repository interfaces.
2021-02-06 13:58:39.493  INFO 14428 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler@2f19ab6' of type [org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2021-02-06 13:58:39.499  INFO 14428 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'methodSecurityMetadataSource' of type [org.springframework.security.access.method.DelegatingMethodSecurityMetadataSource] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2021-02-06 13:58:39.859  INFO 14428 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2021-02-06 13:58:39.875  INFO 14428 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2021-02-06 13:58:39.875  INFO 14428 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.41]
2021-02-06 13:58:40.115  INFO 14428 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2021-02-06 13:58:40.115  INFO 14428 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 8366 ms
2021-02-06 13:58:40.122 ERROR 14428 --- [           main] o.s.b.web.embedded.tomcat.TomcatStarter  : Error starting Tomcat context. Exception: org.springframework.beans.factory.BeanCreationException. Message: Error creating bean with name 'druidConfiguration': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.datasource.initialSize' in value "${spring.datasource.initialSize}"
2021-02-06 13:58:40.163  INFO 14428 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2021-02-06 13:58:40.181  WARN 14428 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
2021-02-06 13:58:40.196  INFO 14428 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2021-02-06 13:58:40.232 ERROR 14428 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:162) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:582) ~[spring-context-5.3.3.jar:5.3.3]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) [spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) [spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) [spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1311) [spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1300) [spring-boot-2.4.2.jar:2.4.2]
	at com.FleamarketApplication.main(FleamarketApplication.java:10) [classes/:na]
Caused by: org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
	at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:142) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:451) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:200) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:181) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:159) ~[spring-boot-2.4.2.jar:2.4.2]
	... 9 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'druidConfiguration': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.datasource.initialSize' in value "${spring.datasource.initialSize}"
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:405) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1415) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:608) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:410) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1179) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:571) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:213) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.boot.web.servlet.ServletContextInitializerBeans.getOrderedBeansOfType(ServletContextInitializerBeans.java:212) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.web.servlet.ServletContextInitializerBeans.getOrderedBeansOfType(ServletContextInitializerBeans.java:203) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.web.servlet.ServletContextInitializerBeans.addServletContextInitializerBeans(ServletContextInitializerBeans.java:97) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.web.servlet.ServletContextInitializerBeans.<init>(ServletContextInitializerBeans.java:86) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.getServletContextInitializerBeans(ServletWebServerApplicationContext.java:259) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.selfInitialize(ServletWebServerApplicationContext.java:233) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.springframework.boot.web.embedded.tomcat.TomcatStarter.onStartup(TomcatStarter.java:53) ~[spring-boot-2.4.2.jar:2.4.2]
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5166) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266) ~[na:1.8.0_181]
	at java.util.concurrent.FutureTask.run(FutureTask.java) ~[na:1.8.0_181]
	at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) ~[na:1.8.0_181]
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:843) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266) ~[na:1.8.0_181]
	at java.util.concurrent.FutureTask.run(FutureTask.java) ~[na:1.8.0_181]
	at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) ~[na:1.8.0_181]
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.StandardService.startInternal(StandardService.java:434) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) ~[spring-boot-2.4.2.jar:2.4.2]
	... 14 common frames omitted
Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.datasource.initialSize' in value "${spring.datasource.initialSize}"
	at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:178) ~[spring-core-5.3.3.jar:5.3.3]
	at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:124) ~[spring-core-5.3.3.jar:5.3.3]
	at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:239) ~[spring-core-5.3.3.jar:5.3.3]
	at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:210) ~[spring-core-5.3.3.jar:5.3.3]
	at org.springframework.context.support.PropertySourcesPlaceholderConfigurer.lambda$processProperties$0(PropertySourcesPlaceholderConfigurer.java:175) ~[spring-context-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:936) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1321) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) ~[spring-beans-5.3.3.jar:5.3.3]
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) ~[spring-beans-5.3.3.jar:5.3.3]
	... 63 common frames omitted

Disconnected from the target VM, address: '127.0.0.1:52228', transport: 'socket'

Process finished with exit code 1

第一眼注意到

Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.datasource.initialSize' in value "${spring.datasource.initialSize}"

因为此处的spring.datasource.initialSize与application-dev.yml内的配置字段不符
将DruidConfiguration内对应的注解改成对应druid配置字段

原文链接：https://blog.csdn.net/weixin_43238731/article/details/113724882