贴一下报错信息

D:\Android\JDK\bin\java.exe "-javaagent:D:\IDEA\IntelliJ IDEA Community Edition 2021.3.2\lib\idea_rt.jar=59350:D:\IDEA\IntelliJ IDEA Community Edition 2021.3.2\bin" -Dfile.encoding=UTF-8 -classpath E:\Code\JA_code\miaosha1\target\classes;C:\Users\\.m2\repository\org\springframework\boot\spring-boot-starter-web\2.0.5.RELEASE\spring-boot-starter-web-2.0.5.RELEASE.jar;C:\Users\\.m2\repository\org\springframework\boot\spring-boot-starter\2.0.5.RELEASE\spring-boot-starter-2.0.5.RELEASE.jar;C:\Users\\.m2\repository\org\springframework\boot\spring-boot\2.0.5.RELEASE\spring-boot-2.0.5.RELEASE.jar;C:\Users\\.m2\repository\org\springframework\boot\spring-boot-autoconfigure\2.0.5.RELEASE\spring-boot-autoconfigure-2.0.5.RELEASE.jar;C:\Users\\.m2\repository\org\springframework\boot\spring-boot-starter-logging\2.0.5.RELEASE\spring-boot-starter-logging-2.0.5.RELEASE.jar;C:\Users\\.m2\repository\ch\qos\logback\logback-classic\1.2.3\logback-classic-1.2.3.jar;C:\Users\\.m2\repository\ch\qos\logback\logback-core\1.2.3\logback-core-1.2.3.jar;C:\Users\\.m2\repository\org\slf4j\slf4j-api\1.7.25\slf4j-api-1.7.25.jar;C:\Users\\.m2\repository\org\apache\logging\log4j\log4j-to-slf4j\2.10.0\log4j-to-slf4j-2.10.0.jar;C:\Users\\.m2\repository\org\apache\logging\log4j\log4j-api\2.10.0\log4j-api-2.10.0.jar;C:\Users\\.m2\repository\org\slf4j\jul-to-slf4j\1.7.25\jul-to-slf4j-1.7.25.jar;C:\Users\\.m2\repository\javax\annotation\javax.annotation-api\1.3.2\javax.annotation-api-1.3.2.jar;C:\Users\\.m2\repository\org\springframework\spring-core\5.0.9.RELEASE\spring-core-5.0.9.RELEASE.jar;C:\Users\\.m2\repository\org\springframework\spring-jcl\5.0.9.RELEASE\spring-jcl-5.0.9.RELEASE.jar;C:\Users\\.m2\repository\org\yaml\snakeyaml\1.19\snakeyaml-1.19.jar;C:\Users\\.m2\repository\org\springframework\boot\spring-boot-starter-json\2.0.5.RELEASE\spring-boot-starter-json-2.0.5.RELEASE.jar;C:\Users\\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.9.6\jackson-databind-2.9.6.jar;C:\Users\\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.9.0\jackson-annotations-2.9.0.jar;C:\Users\\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.9.6\jackson-core-2.9.6.jar;C:\Users\\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.9.6\jackson-datatype-jdk8-2.9.6.jar;C:\Users\\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.9.6\jackson-datatype-jsr310-2.9.6.jar;C:\Users\\.m2\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.9.6\jackson-module-parameter-names-2.9.6.jar;C:\Users\\.m2\repository\org\springframework\boot\spring-boot-starter-tomcat\2.0.5.RELEASE\spring-boot-starter-tomcat-2.0.5.RELEASE.jar;C:\Users\\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\8.5.34\tomcat-embed-core-8.5.34.jar;C:\Users\\.m2\repository\org\apache\tomcat\embed\tomcat-embed-el\8.5.34\tomcat-embed-el-8.5.34.jar;C:\Users\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\8.5.34\tomcat-embed-websocket-8.5.34.jar;C:\Users\\.m2\repository\org\hibernate\validator\hibernate-validator\6.0.12.Final\hibernate-validator-6.0.12.Final.jar;C:\Users\\.m2\repository\javax\validation\validation-api\2.0.1.Final\validation-api-2.0.1.Final.jar;C:\Users\\.m2\repository\org\jboss\logging\jboss-logging\3.3.2.Final\jboss-logging-3.3.2.Final.jar;C:\Users\\.m2\repository\com\fasterxml\classmate\1.3.4\classmate-1.3.4.jar;C:\Users\\.m2\repository\org\springframework\spring-web\5.0.9.RELEASE\spring-web-5.0.9.RELEASE.jar;C:\Users\\.m2\repository\org\springframework\spring-beans\5.0.9.RELEASE\spring-beans-5.0.9.RELEASE.jar;C:\Users\\.m2\repository\org\springframework\spring-webmvc\5.0.9.RELEASE\spring-webmvc-5.0.9.RELEASE.jar;C:\Users\\.m2\repository\org\springframework\spring-aop\5.0.9.RELEASE\spring-aop-5.0.9.RELEASE.jar;C:\Users\\.m2\repository\org\springframework\spring-context\5.0.9.RELEASE\spring-context-5.0.9.RELEASE.jar;C:\Users\\.m2\repository\org\springframework\spring-expression\5.0.9.RELEASE\spring-expression-5.0.9.RELEASE.jar com.miaoshaproject.App
Hello World!

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.0.5.RELEASE)

2022-03-07 21:18:27.880  INFO 17844 --- [           main] com.miaoshaproject.App                   : Starting App on LAPTOP-2FGA23RD with PID 17844 (E:\Code\JA_code\miaosha1\target\classes started by  in E:\Code\JA_code\miaosha1)
2022-03-07 21:18:27.882  INFO 17844 --- [           main] com.miaoshaproject.App                   : No active profile set, falling back to default profiles: default
2022-03-07 21:18:27.923  INFO 17844 --- [           main] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@477b4cdf: startup date [Mon Mar 07 21:18:27 CST 2022]; root of context hierarchy
2022-03-07 21:18:28.664 ERROR 17844 --- [           main] o.s.boot.SpringApplication               : Application run failed

java.lang.IllegalStateException: Cannot load configuration class: org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration
	at org.springframework.context.annotation.ConfigurationClassPostProcessor.enhanceConfigurationClasses(ConfigurationClassPostProcessor.java:414) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanFactory(ConfigurationClassPostProcessor.java:254) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:282) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:126) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:694) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:532) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:780) ~[spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:412) ~[spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:333) ~[spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1277) ~[spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1265) ~[spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at com.miaoshaproject.App.main(App.java:24) ~[classes/:na]
Caused by: java.lang.ExceptionInInitializerError: null
	at org.springframework.context.annotation.ConfigurationClassEnhancer.newEnhancer(ConfigurationClassEnhancer.java:122) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.context.annotation.ConfigurationClassEnhancer.enhance(ConfigurationClassEnhancer.java:110) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.context.annotation.ConfigurationClassPostProcessor.enhanceConfigurationClasses(ConfigurationClassPostProcessor.java:403) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	... 12 common frames omitted
Caused by: org.springframework.cglib.core.CodeGenerationException: java.lang.reflect.InaccessibleObjectException-->Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @33f88ab
	at org.springframework.cglib.core.ReflectUtils.defineClass(ReflectUtils.java:464) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.cglib.core.AbstractClassGenerator.generate(AbstractClassGenerator.java:336) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:93) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:91) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.cglib.core.internal.LoadingCache$2.call(LoadingCache.java:54) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
	at org.springframework.cglib.core.internal.LoadingCache.createEntry(LoadingCache.java:61) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.cglib.core.internal.LoadingCache.get(LoadingCache.java:34) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData.get(AbstractClassGenerator.java:116) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:291) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.cglib.core.KeyFactory$Generator.create(KeyFactory.java:221) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.cglib.core.KeyFactory.create(KeyFactory.java:174) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.cglib.core.KeyFactory.create(KeyFactory.java:153) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.cglib.proxy.Enhancer.<clinit>(Enhancer.java:73) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	... 15 common frames omitted
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @33f88ab
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:357) ~[na:na]
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297) ~[na:na]
	at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199) ~[na:na]
	at java.base/java.lang.reflect.Method.setAccessible(Method.java:193) ~[na:na]
	at org.springframework.cglib.core.ReflectUtils$1.run(ReflectUtils.java:61) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:554) ~[na:na]
	at org.springframework.cglib.core.ReflectUtils.<clinit>(ReflectUtils.java:52) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.cglib.core.KeyFactory$Generator.generateClass(KeyFactory.java:243) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.cglib.core.AbstractClassGenerator.generate(AbstractClassGenerator.java:329) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	... 27 common frames omitted

2022-03-07 21:18:28.667  INFO 17844 --- [           main] ConfigServletWebServerApplicationContext : Closing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@477b4cdf: startup date [Mon Mar 07 21:18:27 CST 2022]; root of context hierarchy

进程已结束,退出代码1

查询了很多结果，有说要改pom.xml文件的，有说要核对springboot版本和mybatis版本的，但是首先我们要核对Java的版本！之前我一直使用Java16然后无法运行，直到我改回了Java1.8才可以正确运行，一定要注意！