log4j日志文件出错_log4g error was "cannot find module 'datefile-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_52827180/article/details/115658421

本文档展示了如何处理Maven项目中docx4j库的依赖排除，避免了slf4j的日志实现冲突，并引入了slf4j-nop作为无操作日志实现。同时，对log4j的配置进行了调整，提供了两种日志级别（WARN）和输出目的地（控制台和文件），确保了测试期间的日志管理。

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1.maven依赖问题

  <dependency>
            <groupId>org.docx4j</groupId>
            <artifactId>docx4j</artifactId>
            <version>6.1.2</version>
            <exclusions>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-log4j12</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-simple</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>log4j</groupId>
                    <artifactId>log4j</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-nop</artifactId>
             <version>1.7.2</version>
         </dependency>


        <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.25</version>
        </dependency>

2.log4j的properties问题
将log4j的properties文件改为下面代码

# Configure logging for testing: optionally with log file
log4j.rootLogger= WARN,stdout
# log4j.rootLogger=WARN,?stdout,?logfile

log4j.appender.stdout= org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout= org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern= ? %d ? %p ? [%c] ? - ? %m%n

log4j.appender.logfile= org.apache.log4j.FileAppender
log4j.appender.logfile.File= target/spring.log
log4j.appender.logfile.layout= org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern= ? %d ? %p ? [%c] ? - ? %m%n