im的http登录接口请求，概率性出现错误

kuma27

app登录的时候接口有报错，app会提示网络出错，log 如下
22-Apr-2020 17:03:32.927 警告 [http-nio-8080-exec-6] com.mchange.v2.c3p0.impl.NewPooledConnection.handleThrowable [c3p0] A PooledConnection that has already signalled a Connection error is still in use!
22-Apr-2020 17:03:32.927 警告 [http-nio-8080-exec-6] com.mchange.v2.c3p0.impl.NewPooledConnection.handleThrowable [c3p0] Another error has occurred [ com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Communications link failure during rollback(). Transaction resolution unknown. ] which will not be reported to listeners!
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Communications link failure during rollback(). Transaction resolution unknown.

2 楼: kuma27

{"success":false,"returnValue":"java.lang.NullPointerException:null\n (DBShell.java:556 - com.eva.framework.dbpool.DBShell.update()\n (DBShell.java:440 - com.eva.framework.dbpool.DBShell.update()\n (MyControllerJSON.java:387 - com.x52im.rainbowchat.MyControllerJSON.authrizationLogin()\n (MyControllerJSON.java:149 - com.x52im.rainbowchat.MyControllerJSON.dispatch()\n (HttpController.java:139 - com.eva.framework.HttpController.process()\n (HttpController.java:94 - com.eva.framework.HttpController.service()\n (HttpServlet.java:741 - javax.servlet.http.HttpServlet.service()\n (ApplicationFilterChain.java:231 - org.apache.catalina.core.ApplicationFilterChain.internalDoFilter()\n (ApplicationFilterChain.java:166 - org.apache.catalina.core.ApplicationFilterChain.doFilter()\n (WsFilter.java:53 - org.apache.tomcat.websocket.server.WsFilter.doFilter()\n (ApplicationFilterChain.java:193 - org.apache.catalina.core.ApplicationFilterChain.internalDoFilter()\n (ApplicationFilterChain.java:166 - org.apache.catalina.core.ApplicationFilterChain.doFilter()\n (CORSFilter.java:169 - com.thetransactioncompany.cors.CORSFilter.doFilter()\n (CORSFilter.java:232 - com.thetransactioncompany.cors.CORSFilter.doFilter()\n (ApplicationFilterChain.java:193 - org.apache.catalina.core.ApplicationFilterChain.internalDoFilter()\n (ApplicationFilterChain.java:166 - org.apache.catalina.core.ApplicationFilterChain.doFilter()\n (StandardWrapperValve.java:202 - org.apache.catalina.core.StandardWrapperValve.invoke()\n (StandardContextValve.java:96 - org.apache.catalina.core.StandardContextValve.invoke()\n (AuthenticatorBase.java:541 - org.apache.catalina.authenticator.AuthenticatorBase.invoke()\n (StandardHostValve.java:139 - org.apache.catalina.core.StandardHostValve.invoke()\n (ErrorReportValve.java:92 - org.apache.catalina.valves.ErrorReportValve.invoke()\n (AbstractAccessLogValve.java:688 - org.apache.catalina.valves.AbstractAccessLogValve.invoke()\n (StandardEngineValve.java:74 - org.apache.catalina.core.StandardEngineValve.invoke()\n (CoyoteAdapter.java:343 - org.apache.catalina.connector.CoyoteAdapter.service()\n (Http11Processor.java:367 - org.apache.coyote.http11.Http11Processor.service()\n (AbstractProcessorLight.java:65 - org.apache.coyote.AbstractProcessorLight.process()\n (AbstractProtocol.java:868 - org.apache.coyote.AbstractProtocol$ConnectionHandler.process()\n (NioEndpoint.java:1639 - org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun()\n (SocketProcessorBase.java:49 - org.apache.tomcat.util.net.SocketProcessorBase.run()\n (null:-1 - java.util.concurrent.ThreadPoolExecutor.runWorker()\n (null:-1 - java.util.concurrent.ThreadPoolExecutor$Worker.run()\n (TaskThread.java:61 - org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run()\n (null:-1 - java.lang.Thread.run()\n"}