Exception in thread "HouseKeeper" java.lang.NullPointerException at org.logicalcobwebs.proxool.HouseKeeperController.getHouseKeeperToRun(HouseKeeperController.java:52) at org.logicalcobwebs.proxool.HouseKeeperThread.run(HouseKeeperThread.java:33…
首先查看是否是端口冲突引起,在日志信息该错误位置往上找,如果再无错误信息,而只有该错误,则原因可能如下: 原因: This is because Proxool is not being shutdown properly. If the JVM stops then Proxool recognises that and shuts down gracefully, but if you redeploy Proxool into some environments (for example,…
前言 1255: 打怪升级(Java),写这个题目程序的时候,控制台提示如下错误: Exception in thread "main" java.lang.NullPointerException at oj1255.Main.input(Main.java:41) at oj1255.Main.<init>(Main.java:24) at oj1255.Main.main(Main.java:52) 然后我调试才发现,这个对象数组居然是null的,这我就不理解了,我明…
1.在window操作系统上,使用eclipse开发工具从hdfs分布式文件系统上下载文件报空指针异常解决方法: log4j:WARN No appenders could be found for logger (org.apache.hadoop.metrics2.lib.MutableMetricsFactory). log4j:WARN Please initialize the log4j system properly. log4j:WARN See http://logging.a…
JAVA错误:Exception in thread "main" java.lang.NullPointerException例如: Exception in thread "main" java.lang.NullPointerException at javax.swing.ImageIcon.<init>(Unknown Source) at chuangti.Example1.CreateJFrame(Example1.java:41) at…
前言: 在http://www.cnblogs.com/wql025/p/4865673.html一文中我曾描述这种异常也提供了解决方式,但效果不太理想,现在用本文的方式,效果显著. 目前此项目只能登录,再打开其他功能模块即出现以下异常: Exception in thread "http-bio-8081-exec-3" java.lang.OutOfMemoryError: PermGen space at java.lang.ClassLoader.defineClass1(Na…
Exception in thread "http-apr-8080-exec-6" java.lang.OutOfMemoryError: PermGen space at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:621) at java.security.SecureClassLoader.defineClass(S…
idea Exception in thread "http-apr-8080-exec-2" java.lang.OutOfMemoryError: PermGen space Vm options -Xms2048m -Xmx2048m -XX:MaxPermSize=4096m -Drebel.spring_plugin=true -Drebel.spring_mvc_plugin=true -Drebel.hibernate_plugin=true …
搭建ReboletricSample的环境: 搭建完成,执行的时候报错: Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/aether/spi/connector/Transfer$State at org.eclipse.aether.connector.wagon.WagonRepositoryConnector$GetTask.run(WagonRepositoryConnector.j…