大数据开发中遇到的错误 java.lang.RuntimeException: java.io.IOException: invalid constant type: 18

版本打包时竟然遇到这种错误

严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
java.lang.RuntimeException: java.io.IOException: invalid constant type: 18
 at javassist.CtClassType.getClassFile2(CtClassType.java:204)
 at javassist.CtClassType.subtypeOf(CtClassType.java:304)
 at javassist.CtClassType.subtypeOf(CtClassType.java:319)
 at javassist.compiler.MemberResolver.compareSignature(MemberResolver.java:248)
 at javassist.compiler.MemberResolver.lookupMethod(MemberResolver.java:120)
 at javassist.compiler.MemberResolver.lookupMethod(MemberResolver.java:97)
 at javassist.compiler.TypeChecker.atMethodCallCore(TypeChecker.java:711)
 at javassist.compiler.TypeChecker.atCallExpr(TypeChecker.java:688)
 at javassist.compiler.JvstTypeChecker.atCallExpr(JvstTypeChecker.java:157)
 at javassist.compiler.ast.CallExpr.accept(CallExpr.java:46)
 at javassist.compiler.CodeGen.doTypeCheck(CodeGen.java:242)
 at javassist.compiler.CodeGen.atStmnt(CodeGen.java:330)
 at javassist.compiler.ast.Stmnt.accept(Stmnt.java:50)
 at javassist.compiler.CodeGen.atStmnt(CodeGen.java:351)
 at javassist.compiler.ast.Stmnt.accept(Stmnt.java:50)
 at javassist.compiler.CodeGen.atIfStmnt(CodeGen.java:391)
 at javassist.compiler.CodeGen.atStmnt(CodeGen.java:355)
 at javassist.compiler.ast.Stmnt.accept(Stmnt.java:50)
 at javassist.compiler.CodeGen.atStmnt(CodeGen.java:351)
 at javassist.compiler.ast.Stmnt.accept(Stmnt.java:50)
 at javassist.compiler.MemberCodeGen.atTryStmnt(MemberCodeGen.java:204)
 at javassist.compiler.CodeGen.atStmnt(CodeGen.java:367)
 at javassist.compiler.ast.Stmnt.accept(Stmnt.java:50)
 at javassist.compiler.CodeGen.atStmnt(CodeGen.java:351)
 at javassist.compiler.ast.Stmnt.accept(Stmnt.java:50)
 at javassist.compiler.CodeGen.atMethodBody(CodeGen.java:292)
 at javassist.compiler.CodeGen.atMethodDecl(CodeGen.java:274)
 at javassist.compiler.ast.MethodDecl.accept(MethodDecl.java:44)
 at javassist.compiler.Javac.compileMethod(Javac.java:169)
 at javassist.compiler.Javac.compile(Javac.java:95)
 at javassist.CtNewMethod.make(CtNewMethod.java:74)
 at javassist.CtNewMethod.make(CtNewMethod.java:45)
 at com.alibaba.dubbo.common.bytecode.ClassGenerator.toClass(ClassGenerator.java:318)
 at com.alibaba.dubbo.common.bytecode.Wrapper.makeWrapper(Wrapper.java:346)
 at com.alibaba.dubbo.common.bytecode.Wrapper.getWrapper(Wrapper.java:89)
 at com.alibaba.dubbo.config.ServiceConfig.doExportUrlsFor1Protocol(ServiceConfig.java:426)
 at com.alibaba.dubbo.config.ServiceConfig.doExportUrls(ServiceConfig.java:281)
 at com.alibaba.dubbo.config.ServiceConfig.doExport(ServiceConfig.java:242)
 at com.alibaba.dubbo.config.ServiceConfig.export(ServiceConfig.java:143)
 at com.alibaba.dubbo.config.spring.ServiceBean.onApplicationEvent(ServiceBean.java:109)
 at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:96)
 at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:334)
 at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:948)
 at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
 at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:389)
 at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:294)
 at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112)
 at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5016)
 at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5528)
 at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
 at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1575)
 at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1565)
 at java.util.concurrent.FutureTask.run(FutureTask.java:266)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
 at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: invalid constant type: 18
 at javassist.bytecode.ConstPool.readOne(ConstPool.java:1113)
 at javassist.bytecode.ConstPool.read(ConstPool.java:1056)
 at javassist.bytecode.ConstPool.(ConstPool.java:150)
 at javassist.bytecode.ClassFile.read(ClassFile.java:765)
 at javassist.bytecode.ClassFile.(ClassFile.java:109)
 at javassist.CtClassType.getClassFile2(CtClassType.java:191)
... 55 more

网上查了下解决方案，我在这里笔记一下

问题分析

1. 根据异常日志中dubbo调用javassist编译字节码出错，定位javassist版本问题；

2. 由于同样的dubbo项目在jdk6下没有问题，当前项目使用的jdk8，所以应该是jdk8和javassist冲突；

3. 将dubbo引入的javassist-3.15.0-GA去掉，引入更高版本直到javassist-3.18.0-GA项目可以正常启动。

解决步骤

1.把repository下的javassist3.18.1包删除
2.项目pom文件增加包

maven中需要增加的包：

   
            com.alibaba
            dubbo
            2.8.4
            
                
                    spring
                    org.springframework
                
            
        
    
            org.javassist
            javassist
            3.20.0-GA