标签: consoleappender

是否有可能以编程方式清除Visual Studio OUTPUT窗口？例如,名为DebugView的SysInternal调试器应用程序具有名为DBGVIEWCLEAR .. 的特定命令,它清除日志窗口.

请不要说:右键单击,清除窗口..用鼠标.我知道,但那不是我追求的.

我遇到了log4j的问题ConsoleAppender:

如果我像这样初始化它:

ConsoleAppender ca = new ConsoleAppender();
ca.setLayout(new PatternLayout(PatternLayout.TTCC_CONVERSION_PATTERN));

它会出错并打破日志记录.

错误输出:

log4j:ERROR没有名为[null]的appender的输出流或文件集.

如果我像这样初始化它工作正常:

ConsoleAppender ca = new ConsoleAppender(new PatternLayout(PatternLayout.TTCC_CONVERSION_PATTERN));

有没有人遇到过这个问题？我无法在Bugzilla存储库中找到它,但如果它实际上是一个问题,那将是非常明显的!

也许我在找错了地方？

相关代码:

import org.apache.log4j.*;

public class ConsoleAppenderIssue {
private static Logger logger = Logger.getLogger(ConsoleAppenderIssue.class);

public static void main(String [] args) {
    ConsoleAppender ca = new ConsoleAppender();
    ca.setLayout(new PatternLayout(PatternLayout.TTCC_CONVERSION_PATTERN));

    logger.addAppender(ca);

    logger.info("log something");

}

}

我想使用Groovy DSL配置Logback.该文件非常简单:

import ch.qos.logback.classic.encoder.PatternLayoutEncoder
import ch.qos.logback.core.ConsoleAppender
import static ch.qos.logback.classic.Level.DEBUG
import static ch.qos.logback.classic.Level.INFO

appender("stdout", ConsoleAppender) {
    encoder(PatternLayoutEncoder) {
        pattern = "%d %p [%c] - <%m>%n"
    }
}

root(INFO, ["stdout"])

我使用Gradle构建我的应用程序并使用jettyRun运行它.我收到以下错误:

Failed to instantiate [ch.qos.logback.classic.LoggerContext]
Reported exception:
org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast object 'ch.qos.logback.core.ConsoleAppender[null]' with class 'ch.qos.logback.core.ConsoleAppender' to class 'ch.qos.logback.core.Appender'
    at  org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.castToType(DefaultTypeTransformation.java:360)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.castToType(ScriptBytecodeAdapter.java:599)
at ch.qos.logback.classic.gaffer.ConfigurationDelegate.appender(ConfigurationDelegate.groovy:119)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
at org.codehaus.groovy.runtime.metaclass.MixinInstanceMetaMethod.invoke(MixinInstanceMetaMethod.java:53)
at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoMetaMethodSiteNoUnwrapNoCoerce.invoke(PogoMetaMethodSite.java:308)
at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.callCurrent(PogoMetaMethodSite.java:52)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:46)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:133)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:149)

但是,当我切换到等效的XML配置时,一切正常.我究竟做错了什么？

使用Logback 1.0.0.尝试使用Logback 1.0.3.

My application logging crashes during maven build in the tests. This is the log4j2.xml what I have in the src/test/resources:

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="INFO">
    <Appenders>
        <Console name="stdout" target="SYSTEM_OUT">
            <PatternLayout pattern="MyApp: %d{yyyy-MM-dd HH:mm:ss,SSS} %5p [%t] %c{1.} - %m%n" />
        </Console>
    </Appenders>

    <Loggers>
        <Logger name="com.my.app" level="info" additivity="false">
            <Appender-ref ref="stdout"/>
        </Logger>
        <Root level="error">
            <Appender-ref ref="stdout"/>
        </Root>
    </Loggers>
</Configuration>

And I get this exception during test during build:

2017-11-23 15:12:28,371 main ERROR An exception occurred processing Appender stdout java.lang.NullPointerException
    at org.apache.logging.log4j.core.impl.ThrowableProxy.toExtendedStackTrace(ThrowableProxy.java:671)
    at org.apache.logging.log4j.core.impl.ThrowableProxy.<init>(ThrowableProxy.java:138) …