Question

下面是出现问题的完整详细信息文件，我不确定我是否正确初始化了Appender 这是我的log4j.properties

# Set root logger level to Info.
log4j.rootLogger=INFO, A1, HDFS

# A1 is set to be a ConsoleAppender.#
log4j.appender.A1=org.apache.log4j.ConsoleAppender

# A1 uses PatternLayout.
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%-4r %d{dd MMM yyyy HH:mm:ss,SSS} [%t] %-5p %c %x - %m%n



log4j.appender.HDFS=com.abcd.util.HDFSFileAppender 
log4j.appender.HDFS.filepath=log/myapp.log
log4j.appender.HDFS.layout=org.apache.log4j.PatternLayout
log4j.appender.rollingFile.layout.ConversionPattern=%-4r %d{dd MMM yyyy HH:mm:ss,SSS} [%t] %-5p %c %x - %m%n

这是我的错误跟踪

log4j：ERROR无法实例化类 [com.abcd.util.HDFSFileAppender]。 java.lang.InstantiationException： com.abcd.util.HDFSFileAppender位于 java.lang.Class.newInstance（Class.java:427）在 org.apache.log4j.helpers.OptionConverter.instantiateByClassName（OptionConverter.java:337）在 org.apache.log4j.helpers.OptionConverter.instantiateByKey（OptionConverter.java:124）在 org.apache.log4j.PropertyConfigurator.parseAppender（PropertyConfigurator.java:785）在 org.apache.log4j.PropertyConfigurator.parseCategory（PropertyConfigurator.java:768）在 org.apache.log4j.PropertyConfigurator.configureRootCategory（PropertyConfigurator.java:648）在 org.apache.log4j.PropertyConfigurator.doConfigure（PropertyConfigurator.java:514）在 org.apache.log4j.PropertyConfigurator.doConfigure（PropertyConfigurator.java:580）在 org.apache.log4j.helpers.OptionConverter.selectAndConfigure（OptionConverter.java:526）在org.apache.log4j.LogManager。（LogManager.java:127）在 org.slf4j.impl.Log4jLoggerFactory。（Log4jLoggerFactory.java:66）在 org.slf4j.impl.StaticLoggerBinder。（StaticLoggerBinder.java:72）在 org.slf4j.impl.StaticLoggerBinder。（StaticLoggerBinder.java:45）在org.slf4j.LoggerFactory.bind（LoggerFactory.java:150）处 org.slf4j.LoggerFactory.performInitialization（LoggerFactory.java:124）在org.slf4j.LoggerFactory.getILoggerFactory（LoggerFactory.java:412）在org.slf4j.LoggerFactory.getLogger（LoggerFactory.java:357）处 org.slf4j.LoggerFactory.getLogger（LoggerFactory.java:383）位于 com.abcd.Application。（Application.java:8）由以下原因引起： java.lang.NoSuchMethodException： com.abcd.util.HDFSFileAppender。（）在 java.lang.Class.getConstructor0（Class.java:3082）在 java.lang.Class.newInstance（Class.java:412）...还有18个

这是我创建的我的Appender

    public class HDFSFileAppender extends AppenderSkeleton {
    private String filepath = null;
    private Layout layout = null;

    public HDFSFileAppender(String filePath, Layout layout) {

        this.filepath = filePath;
        this.layout = layout;
    }
...............

实例化自定义Appender时获取“ log4j：ERROR无法实例化附加程序”

0 个答案: