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java.lang.ClassNotFoundException: org.apache.logging.log4j.util.ReflectionUtil

SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory]
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/logging/log4j/util/ReflectionUtilat org.apache.logging.slf4j.Log4jLoggerFactory.getContext(Log4jLoggerFactory.java:42)at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:46)at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:29)at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:358)at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:155)at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java:132)at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:273)at org.apache.pdfbox.pdmodel.PDDocument.<clinit>(PDDocument.java:98)at pdf2excel.PDFToExcelConverter.main(PDFToExcelConverter.java:47)
Caused by: java.lang.ClassNotFoundException: org.apache.logging.log4j.util.ReflectionUtilat java.net.URLClassLoader.findClass(URLClassLoader.java:387)at java.lang.ClassLoader.loadClass(ClassLoader.java:418)at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)at java.lang.ClassLoader.loadClass(ClassLoader.java:351)... 9 more

也不知道更新到哪里去了，呼。。。

        <!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-api -->
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-api</artifactId>
            <version>3.0.0-beta2</version>
        </dependency>