无法运行 Log4j2 演示 class - 当运行将 class 作为 Java 应用程序时，屏幕上弹出 Java 异常

Question

这是我创建的用于测试 log4j 属性的演示 class

属性文件如给定

请帮助我理解为什么我无法运行 Log4j class

控制台输出

Exception in thread "main" java.lang.ExceptionInInitializerError
Caused by: org.apache.logging.log4j.core.config.ConfigurationException: No type attribute provided for Appender console
    at org.apache.logging.log4j.core.config.properties.PropertiesConfigurationBuilder.createAppender(PropertiesConfigurationBuilder.java:216)
    at org.apache.logging.log4j.core.config.properties.PropertiesConfigurationBuilder.build(PropertiesConfigurationBuilder.java:151)
    at org.apache.logging.log4j.core.config.properties.PropertiesConfigurationFactory.getConfiguration(PropertiesConfigurationFactory.java:56)
    at org.apache.logging.log4j.core.config.properties.PropertiesConfigurationFactory.getConfiguration(PropertiesConfigurationFactory.java:35)
    at org.apache.logging.log4j.core.config.ConfigurationFactory$Factory.getConfiguration(ConfigurationFactory.java:558)
    at org.apache.logging.log4j.core.config.ConfigurationFactory$Factory.getConfiguration(ConfigurationFactory.java:482)
    at org.apache.logging.log4j.core.config.ConfigurationFactory.getConfiguration(ConfigurationFactory.java:322)
    at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:696)
    at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:717)
    at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:272)
    at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:155)
    at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:47)
    at org.apache.logging.log4j.LogManager.getContext(LogManager.java:196)
    at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:599)
    at utilities.Log4j.<clinit>(Log4j.java:8)

Answer 1

看来你不见了；

appender.console.type = 控制台

参见此处示例： https://logging.apache.org/log4j/2.x/manual/configuration.html

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