idea 学习springboot项目时 配置启动失败了 报错搜了很多都不能解决

Question

开始汇报一个这个错误
java.lang.ClassNotFoundException: java.lang.reflect.InaccessibleObjectException

at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[na:1.8.0_191]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_191]
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) ~[na:1.8.0_191]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_191]
at java.lang.Class.forName0(Native Method) ~[na:1.8.0_191]
at java.lang.Class.forName(Class.java:264) ~[na:1.8.0_191]
at org.apache.tomcat.util.compat.Jre9Compat.<clinit>(Jre9Compat.java:88) ~[tomcat-embed-core-9.0.35.jar:9.0.35]
at org.apache.tomcat.util.compat.JreCompat.<clinit>(JreCompat.java:50) [tomcat-embed-core-9.0.35.jar:9.0.35]
at org.apache.catalina.startup.Tomcat.<clinit>(Tomcat.java:1276) [tomcat-embed-core-9.0.35.jar:9.0.35]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:177) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:176) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:158) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:544) [spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at com.paperx.bgserver.BgserverApplication.main(BgserverApplication.java:20) [classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_191]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_191]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_191]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_191]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.3.0.RELEASE.jar:2.3.0.RELEASE]

中间又报一个这个错误无法启动
ava.lang.TypeNotPresentException: Type javax.validation.ValidationException not present

at sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:117) ~[na:1.8.0_191]
at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:125) ~[na:1.8.0_191]
at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49) ~[na:1.8.0_191]
at sun.reflect.generics.visitor.Reifier.reifyTypeArguments(Reifier.java:68) ~[na:1.8.0_191]
at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:138) ~[na:1.8.0_191]
at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49) ~[na:1.8.0_191]
at sun.reflect.generics.repository.ClassRepository.getSuperclass(ClassRepository.java:90) ~[na:1.8.0_191]
at java.lang.Class.getGenericSuperclass(Class.java:777) ~[na:1.8.0_191]
at org.springframework.core.ResolvableType.getSuperType(ResolvableType.java:467) ~[spring-core-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.core.ResolvableType.as(ResolvableType.java:456) ~[spring-core-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.core.ResolvableType.forClass(ResolvableType.java:1041) ~[spring-core-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.boot.diagnostics.AbstractFailureAnalyzer.getCauseType(AbstractFailureAnalyzer.java:56) ~[spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.diagnostics.AbstractFailureAnalyzer.analyze(AbstractFailureAnalyzer.java:33) ~[spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.diagnostics.FailureAnalyzers.analyze(FailureAnalyzers.java:111) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.diagnostics.FailureAnalyzers.reportException(FailureAnalyzers.java:104) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.reportFailure(SpringApplication.java:827) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.handleRunFailure(SpringApplication.java:812) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:325) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at com.paperx.bgserver.BgserverApplication.main(BgserverApplication.java:20) [classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_191]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_191]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_191]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_191]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.3.0.RELEASE.jar:2.3.0.RELEASE]

Answer 1

这个没法回答，最好把pom贴出来，这样方便分析

Answer 2

请问楼主解决了吗？我也遇到了第一个错误

Answer 3

如果是由spring官方下载的项目，尝试按以下步骤修正：

1. 设置项目的JDK。
2. 在pom.xml上点右键 -> maven -> reimport 重新导入maven依赖(或在控制台中执行mvn install)
3. 删除target文件夹