运行Jar（Maven项目）后，我得到以下内容：
java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
错误是在变量声明中引起的：
private static final Logger logger = LoggerFactory.getLogger("name.log");
导致此错误是因为我需要向项目classPath添加一个slf4j实现（这是我在搜索数小时后所理解的）
我在线阅读的解决方案建议在Pom中添加一个依赖项，它应该解决它。嗯，由于某种原因，它对我不起作用。
由于它是一个Maven项目，我的pom.xml看起来像这样：
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.13</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.7.13</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.13</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.1.3</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.1.3</version>
</dependency>
可能相关：当我在Netbeans（IDE）中运行项目时，它会完美记录;但是一旦我构建并尝试运行jar，就会抛出上面提到的异常。
我很感激帮助。
答案 0 :(得分：-2)
它与此问题无关，但只保留一个slf4实现，例如SLF4J-简单。
现在关于丢失的LoggerFactory。在应用程序服务器外部运行时，必须通过显式类路径或在生成的jar（胖子）中嵌入所需的jar存档来提供库。
对于前一个选项，可以在命令行或jar清单中完成。
下面是一张pom，显示了清单的使用和fatjar的生成：
mvn clean编译antrun：运行-Pclass-antrun
mvn clean package antrun：run -Pjar-antrun
mvn clean package antrun：run -Pfatjar
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>dummy-slf4j</groupId>
<artifactId>dummy-slf4j</artifactId>
<version>0.0.1-SNAPSHOT</version>
<properties>
<main.class>dummy.App</main.class>
<jdk.version>1.6</jdk.version>
<project.encoding>UTF-8</project.encoding>
<project.build.sourceEncoding>${project.encoding}</project.build.sourceEncoding>
<project.reporting.outputEncoding>${project.encoding}</project.reporting.outputEncoding>
<maven.compiler.source>${jdk.version}</maven.compiler.source>
<maven.compiler.target>${jdk.version}</maven.compiler.target>
<maven.compiler.compilerVersion>${jdk.version}</maven.compiler.compilerVersion>
<maven.compiler.fork>true</maven.compiler.fork>
<maven.compiler.verbose>true</maven.compiler.verbose>
<maven.compiler.optimize>true</maven.compiler.optimize>
<maven.compiler.debug>true</maven.compiler.debug>
<maven.jar.plugin.version>2.6</maven.jar.plugin.version>
<maven.assembly.plugin.version>2.6</maven.assembly.plugin.version>
<maven.dependency.plugin.version>2.10</maven.dependency.plugin.version>
<maven.antrun.plugin.version>1.8</maven.antrun.plugin.version>
</properties>
<dependencies>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.7.13</version>
</dependency>
</dependencies>
<build>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>${maven.jar.plugin.version}</version>
<configuration>
<archive>
<manifest>
<mainClass>${main.class}</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
<plugin>
<artifactId>maven-antrun-plugin</artifactId>
<version>${maven.antrun.plugin.version}</version>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<version>${maven.assembly.plugin.version}</version>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>${main.class}</mainClass>
</manifest>
</archive>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-dependency-plugin</artifactId>
<version>${maven.dependency.plugin.version}</version>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<includeScope>runtime</includeScope>
<outputDirectory>${project.build.directory}/lib/</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
</build>
<profiles>
<profile>
<id>jar-antrun</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>lib/</classpathPrefix>
</manifest>
</archive>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<configuration>
<target>
<java fork="true"
jar="${project.build.directory}/${project.build.finalName}.jar" />
</target>
</configuration>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>class-antrun</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<configuration>
<target>
<java fork="true" classname="${main.class}">
<classpath refid="maven.compile.classpath" />
</java>
</target>
</configuration>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>fatjar</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<configuration>
<target>
<java fork="true"
jar="${project.build.directory}/${project.build.finalName}-jar-with-dependencies.jar" />
</target>
</configuration>
</plugin>
</plugins>
</build>
</profile>
</profiles>
</project>
使用主应用程序：
package dummy;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class App {
private static final Logger logger = LoggerFactory.getLogger(App.class);
public static void main(String[] args) {
logger.info("toto");
}
}
更新：为fatjar添加个人资料