1 Exception in thread "pool-1-thread-1" java.lang.RuntimeException: java.io.IOException: invalid constant type: 18 2 at javassist.CtClassType.getClassFile2(CtClassType.java:204) 3 at javassist.CtClassType.subtypeOf(CtClassType.java:304) 4 at javassist.CtClassType.subtypeOf(CtClassType.java:319) 5 at javassist.compiler.MemberResolver.compareSignature(MemberResolver.java:248) 6 at javassist.compiler.MemberResolver.lookupMethod(MemberResolver.java:120) 7 at javassist.compiler.MemberResolver.lookupMethod(MemberResolver.java:97) 8 at javassist.compiler.TypeChecker.atMethodCallCore(TypeChecker.java:711) 9 at javassist.compiler.TypeChecker.atCallExpr(TypeChecker.java:688) 10 at javassist.compiler.JvstTypeChecker.atCallExpr(JvstTypeChecker.java:157) 11 at javassist.compiler.ast.CallExpr.accept(CallExpr.java:46) 12 at javassist.compiler.JvstTypeChecker.atCastToWrapper(JvstTypeChecker.java:126) 13 at javassist.compiler.JvstTypeChecker.atCastExpr(JvstTypeChecker.java:98) 14 at javassist.compiler.ast.CastExpr.accept(CastExpr.java:55) 15 at javassist.compiler.CodeGen.doTypeCheck(CodeGen.java:242) 16 at javassist.compiler.CodeGen.compileExpr(CodeGen.java:229) 17 at javassist.compiler.CodeGen.atReturnStmnt2(CodeGen.java:598) 18 at javassist.compiler.JvstCodeGen.atReturnStmnt(JvstCodeGen.java:425) 19 at javassist.compiler.CodeGen.atStmnt(CodeGen.java:363) 20 at javassist.compiler.ast.Stmnt.accept(Stmnt.java:50) 21 at javassist.compiler.CodeGen.atStmnt(CodeGen.java:351) 22 at javassist.compiler.ast.Stmnt.accept(Stmnt.java:50) 23 at javassist.compiler.CodeGen.atIfStmnt(CodeGen.java:391) 24 at javassist.compiler.CodeGen.atStmnt(CodeGen.java:355) 25 at javassist.compiler.ast.Stmnt.accept(Stmnt.java:50) 26 at javassist.compiler.CodeGen.atStmnt(CodeGen.java:351) 27 at javassist.compiler.ast.Stmnt.accept(Stmnt.java:50) 28 at javassist.compiler.MemberCodeGen.atTryStmnt(MemberCodeGen.java:204) 29 at javassist.compiler.CodeGen.atStmnt(CodeGen.java:367) 30 at javassist.compiler.ast.Stmnt.accept(Stmnt.java:50) 31 at javassist.compiler.CodeGen.atStmnt(CodeGen.java:351) 32 at javassist.compiler.ast.Stmnt.accept(Stmnt.java:50) 33 at javassist.compiler.CodeGen.atMethodBody(CodeGen.java:292) 34 at javassist.compiler.CodeGen.atMethodDecl(CodeGen.java:274) 35 at javassist.compiler.ast.MethodDecl.accept(MethodDecl.java:44) 36 at javassist.compiler.Javac.compileMethod(Javac.java:169) 37 at javassist.compiler.Javac.compile(Javac.java:95) 38 at javassist.CtNewMethod.make(CtNewMethod.java:74) 39 at javassist.CtNewMethod.make(CtNewMethod.java:45) 40 at com.alibaba.dubbo.common.bytecode.ClassGenerator.toClass(ClassGenerator.java:318) 41 at com.alibaba.dubbo.common.bytecode.Wrapper.makeWrapper(Wrapper.java:346) 42 at com.alibaba.dubbo.common.bytecode.Wrapper.getWrapper(Wrapper.java:89) 43 at com.alibaba.dubbo.rpc.proxy.javassist.JavassistProxyFactory.getInvoker(JavassistProxyFactory.java:40) 44 at com.alibaba.dubbo.rpc.proxy.wrapper.StubProxyFactoryWrapper.getInvoker(StubProxyFactoryWrapper.java:104) 45 at com.alibaba.dubbo.rpc.ProxyFactory$Adpative.getInvoker(ProxyFactory$Adpative.java) 46 at com.alibaba.dubbo.config.ServiceConfig.exportLocal(ServiceConfig.java:507) 47 at com.alibaba.dubbo.config.ServiceConfig.doExportUrlsFor1Protocol(ServiceConfig.java:465) 48 at com.alibaba.dubbo.config.ServiceConfig.doExportUrls(ServiceConfig.java:281) 49 at com.alibaba.dubbo.config.ServiceConfig.doExport(ServiceConfig.java:242) 50 at com.alibaba.dubbo.config.ServiceConfig.export(ServiceConfig.java:143) 51 at com.alibaba.dubbo.config.spring.ServiceBean.onApplicationEvent(ServiceBean.java:109) 52 at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:166) 53 at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:138) 54 at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:383) 55 at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:337) 56 at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:882) 57 at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:545) 58 at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) 59 at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:93) 60 at banniu.app.logistics.AppLogisticsMain$1.run(AppLogisticsMain.java:30) 61 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 62 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 63 at java.lang.Thread.run(Thread.java:745) 64 Caused by: java.io.IOException: invalid constant type: 18 65 at javassist.bytecode.ConstPool.readOne(ConstPool.java:1113) 66 at javassist.bytecode.ConstPool.read(ConstPool.java:1056) 67 at javassist.bytecode.ConstPool.<init>(ConstPool.java:150) 68 at javassist.bytecode.ClassFile.read(ClassFile.java:765) 69 at javassist.bytecode.ClassFile.<init>(ClassFile.java:109) 70 at javassist.CtClassType.getClassFile2(CtClassType.java:191) 71 ... 61 more
报错信息如上图所示 , 这个是由于dubbo2.5.3使用的org.javassist的包版本是3.15.0-GA , 但是我服务器上面的jdk版本是1.8的 , 结果导致不兼容 ,
原因：javassist 3.18以下的版本不支持在JDK1.8下运行，详情点击.
解决方法有两个：
1 使用JDK1.7或者以下版本.
2 升级javassist 到3.18或以上版本.
我的建议是使用第二种方法 , 毕竟大家现在都趋向于升级jdk到1.8以上
附上我的解决方式
