Question

我正在尝试在Maven项目中使用slf4j进行日志记录。即使在pom文件中添加了slf4j-api和slf4j-simple依赖项后，我也收到以下错误。

错误：

Exception in thread "main" java.lang.NoClassDefFoundError: 
org/apache/log4j/or/RendererMap
at org.apache.log4j.Hierarchy.<init>(Hierarchy.java:97)
at org.apache.log4j.LogManager.<clinit>(LogManager.java:82)
at org.slf4j.impl.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:81)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:358)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:383)

Caused by: java.lang.ClassNotFoundException: org.apache.log4j.or.RendererMap
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 10 more

以下是我的pom文件依赖项。

<properties>
    <scala.compat.version>2.11</scala.compat.version>
    <scala.version>2.11.8</scala.version>
    <spark.version>2.1.2</spark.version>
</properties>

<dependency>
        <groupId>org.scala-lang</groupId>
        <artifactId>scala-library</artifactId>
        <version>${scala.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.scala-lang/scala-reflect -->
<dependency>
        <groupId>org.scala-lang</groupId>
        <artifactId>scala-reflect</artifactId>
        <version>${scala.version}</version>
 </dependency>
 <!-- https://mvnrepository.com/artifact/org.apache.spark/spark-core -->
 <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-core_${scala.compat.version}</artifactId>
        <version>${spark.version}</version>
 </dependency>
 <!-- https://mvnrepository.com/artifact/org.apache.spark/spark-sql -->
 <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-sql_${scala.compat.version}</artifactId>
        <version>${spark.version}</version>
 </dependency>
 <!-- https://mvnrepository.com/artifact/org.apache.spark/spark-hive -->
 <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-hive_${scala.compat.version}</artifactId>
        <version>${spark.version}</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>
 <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-simple -->
 <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-simple</artifactId>
        <version>1.7.25</version>
 </dependency>

我是否还想将其他依赖项添加到pom文件中？

Answer 1

只需添加答案，以防其他人寻找解决方案。

将以下依赖项添加到pom文件中。

<dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>1.7.25</version>
    </dependency>

线程“主”中的异常java.lang.NoClassDefFoundError：org / apache / log4j / or / RendererMap

1 个答案: