在运行时初始化 Log4j

[代码] log4j.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
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<log4j:configuration xmlns:log4j="; debug="true">
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<appender name="consoleAppender"
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class="org.apache.log4j.ConsoleAppender">
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<param name="Threshold" value="DEBUG" />
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<layout class="org.apache.log4j.PatternLayout">
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<param name="ConversionPattern" value="%d %-5p [%c]-[%L] %m%n" />
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</layout>
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</appender>
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<appender name="fileAppender"
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class="org.apache.log4j.RollingFileAppender">
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<param name="Threshold" value="DEBUG" />
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<param name="File" value="C:/log4jFiles/myapp.log"/>
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<layout class="org.apache.log4j.PatternLayout">
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<param name="ConversionPattern" value="%d %-5p [%c]-[%L] %m%n" />
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</layout>
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</appender>
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<root>
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<priority value ="debug" />
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<appender-ref ref="fileAppender" />
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<appender-ref ref="consoleAppender" />
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</root>
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</log4j:configuration>
[代码] 初始化方法
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import org.apache.log4j.BasicConfigurator;
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import org.apache.log4j.xml.DOMConfigurator;
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String configPath = "C:/log4jFiles/log4j.xml";
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BasicConfigurator.resetConfiguration();
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DOMConfigurator.configure(configPath);
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DOMConfigurator.configureAndWatch(configPath);