log4j:ERROR A "org.apache.log4j.DailyRollingFileAppender" object is not assignable to a "org.apache.log4j.Appender" variable.
多个classloader加载log4j时需要设置当前Thread的classloader为你自己的classloader
- Thread.currentThread().setContextClassLoader(classLoader); //for log4j
摘自:org.apache.log4j.helpers.Loader
- /**
- * If running under JDK 1.2 load the specified class using the
- * <code>Thread</code> <code>contextClassLoader</code> if that
- * fails try Class.forname. Under JDK 1.1 only Class.forName is
- * used.
- *
- */
- static public Class loadClass (String clazz) throws ClassNotFoundException {
- // Just call Class.forName(clazz) if we are running under JDK 1.1
- // or if we are instructed to ignore the TCL.
- if(java1 || ignoreTCL) {
- return Class.forName(clazz);
- } else {
- try {
- return getTCL().loadClass(clazz);
- } catch(Throwable e) {
- // we reached here because tcl was null or because of a
- // security exception, or because clazz could not be loaded...
- // In any case we now try one more time
- return Class.forName(clazz);
- }
- }
- log4j:ERROR A "org.apache.log4j.DailyRollingFileAppender" object is not assignable to a "org.apache.log4j.Appender" variable.
- log4j:ERROR The class "org.apache.log4j.Appender" was loaded by
- log4j:ERROR [com.generallycloud.baseio.container.URLDynamicClassLoader@55740540] whereas object of type
- log4j:ERROR "org.apache.log4j.DailyRollingFileAppender" was loaded by [sun.misc.Launcher$AppClassLoader@18b4aac2].
- log4j:ERROR Could not instantiate appender named "main".
- log4j:ERROR A "org.apache.log4j.ConsoleAppender" object is not assignable to a "org.apache.log4j.Appender" variable.
- log4j:ERROR The class "org.apache.log4j.Appender" was loaded by
- log4j:ERROR [com.generallycloud.baseio.container.URLDynamicClassLoader@55740540] whereas object of type
- log4j:ERROR "org.apache.log4j.ConsoleAppender" was loaded by [sun.misc.Launcher$AppClassLoader@18b4aac2].
- log4j:ERROR Could not instantiate appender named "console".
- log4j:WARN No appenders could be found for logger (com.generallycloud.baseio.component.ssl.SSLUtil).
- log4j:WARN Please initialize the log4j system properly.
原文:http://www.cnblogs.com/gifisan/p/6879465.html
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