关于java.lang.reflect.InvocationTargetException。

问题描述：

一个上线稳定运行很久了的项目，由于需求变更开发新功能需要引入新的maven依赖，开发过程及windows7中的Tomcat8运行均正常，但是部署至Linux正式环境后调用方法抛出异常，新增 jwt 相关依赖。

异常日志：

java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at com.jfinal.aop.Invocation.invoke(Invocation.java:87)
at com.jfinal.core.ActionHandler.handle(ActionHandler.java:74)
at com.jfinal.core.JFinalFilter.doFilter(JFinalFilter.java:74)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1152)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1539)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1495)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.jfinal.aop.Invocation.invoke(Invocation.java:73)
... 20 more
Caused by: java.lang.NoSuchFieldError: USE_DEFAULTS
at com.fasterxml.jackson.annotation.JsonInclude$Value.<clinit>(JsonInclude.java:204)
at com.fasterxml.jackson.databind.cfg.MapperConfig.<clinit>(MapperConfig.java:44)
at com.fasterxml.jackson.databind.ObjectMapper.<init>(ObjectMapper.java:558)
at com.fasterxml.jackson.databind.ObjectMapper.<init>(ObjectMapper.java:474)
at com.auth0.jwt.JWTCreator.<init>(JWTCreator.java:33)
at com.auth0.jwt.JWTCreator.<init>(JWTCreator.java:24)
at com.auth0.jwt.JWTCreator$Builder.sign(JWTCreator.java:311)
at com.zhengxin.tools.JwtToken.createToken(JwtToken.java:41)
at com.zhengxin.controller.AdminController.getXJDToken(AdminController.java:67)
at com.zhengxin.controller.AdminController.login(AdminController.java:50)
... 25 more

解决方案：

根据 java.lang.NoSuchFieldError 异常定位jar冲突，通过maven过滤找到所有相关依赖，然后检查部署war中lib的jar，发现jackson-annotations、jackson-core、jackson-databind 的jar存在高低两个版本，按照惯例保留高版本，上线ok，问题解决

参考资料：

https://blog.csdn.net/haifeng_cool/article/details/77196411

转载于:https://www.cnblogs.com/fusheng8923/p/9773471.html

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