标签 [ jersey ] 下的文章:

SSLHandshakeException masked by useless IllegalStateException: Already connected

最近项目运行环境的jdk版本从1.7更新到了1.8,发现一个奇怪的问题。
程序中使用了https访问了外部web server,以前如果证书验证错误会报

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException

但是更新了版本之后,同样的错误却抛出javax.ws.rs.ProcessingException: Already connected这样的异常,感觉非常奇怪,特意去了解了一下,
最后发现这其实是一个jersey的BUG,在2.22.2, 2.23, 3.0这几个版本中得到了修复。

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Tomcat启动报cannot be cast to javax.servlet.ServletContainerInitializer

Jersey + Tomcat启动发生如下错误:

SEVERE: ContainerBase.addChild: start: 
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/token]]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
    at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:663)
    at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1642)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassCastException: org.glassfish.jersey.servlet.init.JerseyServletContainerInitializer cannot be cast to javax.servlet.ServletContainerInitializer
    at org.apache.catalina.startup.ContextConfig.getServletContainerInitializer(ContextConfig.java:1670)
    at org.apache.catalina.startup.ContextConfig.getServletContainerInitializers(ContextConfig.java:1652)
    at org.apache.catalina.startup.ContextConfig.processServletContainerInitializers(ContextConfig.java:1562)
    at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1270)
    at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:878)
    at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:376)
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5322)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    ... 10 more

原因:
tomcat的lib目录下已经存在servlet-api.jar,jersey库的ext目录下也含有一个javax.servlet-api-3.0.1.jar,推测这两个jar包冲突了,可以去掉其中一个。