Caused by: org.hibernate.boot.archive.spi.ArchiveException: Could not build ClassFile异常怎么解决

在启动springboot的时候，启动报错，一开始日志错误是

ERROR 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:155)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:540)
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:316)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248)
	at com.wandaph.AppRun.main(AppRun.java:20)

报

Unable to start embedded Tomcat

最后日志错误定格在以下日志

Caused by: org.hibernate.boot.archive.spi.ArchiveException: Could not build ClassFile
	at org.hibernate.boot.archive.scan.spi.ClassFileArchiveEntryHandler.toClassFile(ClassFileArchiveEntryHandler.java:64)
	at org.hibernate.boot.archive.scan.spi.ClassFileArchiveEntryHandler.handleEntry(ClassFileArchiveEntryHandler.java:47)
	at org.hibernate.boot.archive.internal.ExplodedArchiveDescriptor.processDirectory(ExplodedArchiveDescriptor.java:143)
	at org.hibernate.boot.archive.internal.ExplodedArchiveDescriptor.processDirectory(ExplodedArchiveDescriptor.java:118)
	at org.hibernate.boot.archive.internal.ExplodedArchiveDescriptor.processDirectory(ExplodedArchiveDescriptor.java:118)
	at org.hibernate.boot.archive.internal.ExplodedArchiveDescriptor.processDirectory(ExplodedArchiveDescriptor.java:118)
	at org.hibernate.boot.archive.internal.ExplodedArchiveDescriptor.processDirectory(ExplodedArchiveDescriptor.java:118)
	at org.hibernate.boot.archive.internal.ExplodedArchiveDescriptor.processDirectory(ExplodedArchiveDescriptor.java:118)
	at org.hibernate.boot.archive.internal.ExplodedArchiveDescriptor.processDirectory(ExplodedArchiveDescriptor.java:118)
	at org.hibernate.boot.archive.internal.ExplodedArchiveDescriptor.visitArchive(ExplodedArchiveDescriptor.java:54)
	at org.hibernate.boot.archive.scan.spi.AbstractScannerImpl.scan(AbstractScannerImpl.java:47)
	at org.hibernate.boot.model.process.internal.ScanningCoordinator.coordinateScan(ScanningCoordinator.java:76)
	at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.prepare(MetadataBuildingProcess.java:99)
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.<init>(EntityManagerFactoryBuilderImpl.java:232)
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.<init>(EntityManagerFactoryBuilderImpl.java:167)
	at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:51)
	at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365)
	at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:390)
	at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:377)
	at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1804)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1741)
	... 98 common frames omitted
Caused by: java.io.IOException: invalid constant type: 18
	at javassist.bytecode.ConstPool.readOne(ConstPool.java:1090)
	at javassist.bytecode.ConstPool.read(ConstPool.java:1033)
	at javassist.bytecode.ConstPool.<init>(ConstPool.java:149)
	at javassist.bytecode.ClassFile.read(ClassFile.java:737)
	at javassist.bytecode.ClassFile.<init>(ClassFile.java:108)
	at org.hibernate.boot.archive.scan.spi.ClassFileArchiveEntryHandler.toClassFile(ClassFileArchiveEntryHandler.java:61)
	... 119 common frames omitted

原因是你的javassist冲突的问题，可以用idea查看依赖到底是哪个包引起javassist，然后在pom里的相关项目里加上exclusion，

如下

    <dependency>
            <groupId>***</groupId>
            <artifactId>***</artifactId>
            <version>***</version>
            <exclusions>
                <!-- 排除javassist-->
                <exclusion>
                    <groupId>javassist</groupId>
                    <artifactId>javassist</artifactId>
                </exclusion>
            </exclusions>
    </dependency>