“线程中的异常”;“主要”;java.lang.NoClassDefFoundError:com/fasterxml/jackson/databind/ObjectMapper在maven上
我有一个简单的maven应用程序 这是我的pom文件“线程中的异常”;“主要”;java.lang.NoClassDefFoundError:com/fasterxml/jackson/databind/ObjectMapper在maven上,java,maven,Java,Maven,我有一个简单的maven应用程序 这是我的pom文件 <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">
<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>example</groupId>
<artifactId>myapp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>ojminitiator</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.10.1</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.10.1</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.dataformat</groupId>
<artifactId>jackson-dataformat-xml</artifactId>
<version>2.10.1</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.10.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>3.1.0</version>
<configuration>
<defaultGoal>install</defaultGoal>
<sourceDirectory>src</sourceDirectory>
<archive>
<manifest>
<mainClass>org.example.App</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
</project>
您正在使用
maven-jar-plugin
创建一个具有依赖项的jar
我想您应该使用maven汇编插件
要做到这一点,请进行更改
<artifactId>maven-jar-plugin</artifactId>
我曾试图删除线从pom,然后建立它,但仍然得到相同的error@RajarshiDas:我相信这个答案是正确的,您构建jar的方式不包括依赖项。如果你按照建议修改使用过的插件,它应该可以工作。在构建之后,我只能看到一个jar文件,没有其他jar文件,并通过删除来尝试它。确保它正确地绑定到构建阶段。看一看问题。是的,我已经在我的答案中添加了这个。
Exception in thread "main" java.lang.NoClassDefFoundError: com/fasterxml/jackson/databind/ObjectMapper
at telstra.ojminitiator.App.RestCall(App.java:35)
at telstra.ojminitiator.App.main(App.java:28)
Caused by: java.lang.ClassNotFoundException: com.fasterxml.jackson.databind.ObjectMapper
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 2 more
<artifactId>maven-jar-plugin</artifactId>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<id>make-assembly</id> <!-- this is used for inheritance merges -->
<phase>package</phase> <!-- bind to the packaging phase -->
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
java -jar target/myApp-jar-with-dependencies.jar