执行mapreduce报错java.lang.Exception: java.lang.RuntimeException: java.lang.NoSuchMethodException: com.web.visit.main.ClickVist$VisitMapper.<init>(), 原因是map类和reduce没有加static修饰,因为hadoop在调用map和reduce类时采用的反射调用,内部类不是静态的,没有获取到内部类的实例 解决方法 1.在内部类加上static修饰 2.将…
场景:将Eclipse的可以运行的项目转到IDEA发现一个奇怪的错误 今天用IDEA2018.1运行SpringBoot项目报错如下: Error:java: Internal compiler error: java.lang.Exception: java.lang.NoClassDefFoundError: org/springframework/boot/configurationprocessor/metadata/ConfigurationMetadata at org.eclips…
错误信息: java.lang.Exception: java.lang.ArrayIndexOutOfBoundsException: 1    at org.apache.hadoop.mapred.LocalJobRunner$Job.runTasks(LocalJobRunner.java:492)    at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:552)Caused by: java.l…
通过Android Studio编译器获取SHA1 第一步.打开Android Studio的Terminal工具 第二步.输入命令:keytool -v -list -keystore keystore文件路径,然后提示 keytool 错误: java.lang.Exception: 密钥库文件不存在: keystore 于是上网百度,参考:http://blog.csdn.net/zhangxing52077/article/details/53997893 很简单:只需要在Termina…
[2013-12-06 11:06:21,715] [C3P0PooledConnectionPoolManager[identityToken->2tl0n98y1iwg7cbdzzq7a|719f1f]-HelperThread-#2] DEBUG - com.mchange.v2.c3p0.impl.NewPooledConnection@484c6b closed by a client. java.lang.Exception: DEBUG -- CLOSE BY CLIENT STA…
java.lang.Exception: No runnable methods at org.junit.runners.BlockJUnit4ClassRunner.validateInstanceMethods(BlockJUnit4ClassRunner.java:169) at org.junit.runners.BlockJUnit4ClassRunner.collectInitializationErrors(BlockJUnit4ClassRunner.java:104) at …
2010-5-18 22:00:38 org.apache.catalina.core.AprLifecycleListener lifecycleEvent 信息: The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jdk1.6.0_10…
在CMD命令行中启动运行startup.bat,启运程序总是闪退,查看日志发现如下错误: 26-Jan-2016 18:12:34.463 SEVERE [main] org.apache.coyote.AbstractProtocol.init Failed to initialize end point associated with ProtocolHandler ["ajp-apr-8009"] java.lang.Exception: Socket bind failed:…
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space解决方法 问题描述 Exception in thread "main" java.lang.OutOfMemoryError: Java heap space 解决方案[转] 一直都知道可以设置jvm heap大小,一直用eclipse写/调试java程序.一直用命令行or console加参数跑程序.现象:在eclipse的…
需要修改三个端口号:%apache_tomcat6%/conf/server.xml 四月 11, 2014 11:39:25 上午 org.apache.catalina.core.AprLifecycleListener init信息: Loaded APR based Apache Tomcat Native library 1.1.22.四月 11, 2014 11:39:25 上午 org.apache.catalina.core.AprLifecycleListener init信息…