Log4j2

Question

我正在尝试按照非常简单的 log4j 配置来尝试理解该库。我已将文件放入主包的子包中

Main Package
  |
  |__Logging Package <-  XML file is here

log4jxml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration debug="true"
    xmlns:log4j='http://jakarta.apache.org/log4j/'>

    <appender name="console" class="org.apache.log4j.ConsoleAppender">
        <layout class="org.apache.log4j.PatternLayout">
        <param name="ConversionPattern" 
          value="%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n" />
        </layout>
    </appender>

    <root>
        <level value="DEBUG" />
        <appender-ref ref="console" />
    </root>

</log4j:configuration>

当我在 IntelliJ 中执行我的程序时，我得到了所需的日志，但是如果我创建一个 jar 文件并执行它，我开始收到以下 log4j2 初始化错误。

ERROR StatusLogger Unrecognized format specifier [d]
ERROR StatusLogger Unrecognized conversion specifier [d] starting at position 16
 in conversion pattern.
ERROR StatusLogger Unrecognized format specifier [thread]
ERROR StatusLogger Unrecognized conversion specifier [thread] starting at positi
on 25 in conversion pattern.
ERROR StatusLogger Unrecognized format specifier [level]
ERROR StatusLogger Unrecognized conversion specifier [level] starting at positio
n 35 in conversion pattern.
ERROR StatusLogger Unrecognized format specifier [logger]
ERROR StatusLogger Unrecognized conversion specifier [logger] starting at positi
on 47 in conversion pattern.
ERROR StatusLogger Unrecognized format specifier [msg]
ERROR StatusLogger Unrecognized conversion specifier [msg] starting at position
54 in conversion pattern.
ERROR StatusLogger Unrecognized format specifier [n]
ERROR StatusLogger Unrecognized conversion specifier [n] starting at position 56
 in conversion pattern.

然后对于我的应用程序中的每个日志，log4j 都会吐出我在配置中指定的模式，就像屏幕上显示的那样，没有任何其他信息。

我在 Windows 7 桌面上使用以下 log4j 依赖项。

<dependency>
          <groupId>org.apache.logging.log4j</groupId>
          <artifactId>log4j-api</artifactId>
          <version>2.4.1</version>
      </dependency>
      <dependency>
          <groupId>org.apache.logging.log4j</groupId>
          <artifactId>log4j-core</artifactId>
          <version>2.4.1</version>
      </dependency>

我在 pom.xml

中为 Java 版本配置了以下内容

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
 </properties>

Answer 1

您的配置适用于 Log4j 1.x，而不是 2.x。

Log4j2 - 不支持的参数

Log4j2 - Unsupported Parameters

java

logging

log4j