我正在尝试为spring项目构建一个带有依赖项的可执行jar。
我的pom:
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.xxx</groupId>
<artifactId>xxx</artifactId>
<version>3.0.x-SNAPSHOT</version>
</parent>
<groupId>com.mindcite</groupId>
<artifactId>mindcite-rdfizer-tool</artifactId>
<version>3.0.4-SNAPSHOT</version>
<packaging>jar</packaging>
<name>compony :: project</name>
<dependencies>
<dependency>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring</artifactId>
<version>2.5.2</version>
</dependency>
</dependencies>
<build>
<sourceDirectory>src</sourceDirectory>
<resources>
<resource>
<directory>conf</directory>
</resource>
</resources>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-eclipse-plugin</artifactId>
<version>2.8</version>
<configuration>
<wtpversion>2.0</wtpversion>
<buildcommands>
<buildcommand>org.eclipse.jdt.core.javabuilder</buildcommand>
<buildCommand>
<name>org.eclipse.ajdt.core.ajbuilder</name>
<arguments>
<aspectPath>org.springframework.aspects</aspectPath>
</arguments>
</buildCommand>
<buildCommand>
<name>org.springframework.ide.eclipse.core.springbuilder</name>
</buildCommand>
</buildcommands>
<additionalProjectnatures>
<projectnature>org.eclipse.jdt.core.javanature</projectnature>
<projectnature>org.springframework.ide.eclipse.core.springnature</projectnature>
</additionalProjectnatures>
</configuration>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>attached</goal>
</goals>
</execution>
</executions>
<configuration>
<descriptors>
<descriptor>assembly/package.xml</descriptor>
</descriptors>
</configuration>
</plugin>
</plugins>
</build>
</project>
我的汇编描述符:
<?xml version="1.0" encoding="UTF-8"?>
<assembly>
<id>full</id>
<formats>
<format>jar</format>
</formats>
<includeBaseDirectory>false</includeBaseDirectory>
<dependencySets>
<dependencySet>
<unpack>false</unpack>
<scope>runtime</scope>
<outputDirectory>lib</outputDirectory>
</dependencySet>
</dependencySets>
<fileSets>
<fileSet>
<directory>${project.build.outputDirectory}</directory>
<outputDirectory>/</outputDirectory>
<useDefaultExcludes>false</useDefaultExcludes>
</fileSet>
<fileSet>
<directory>icons</directory>
<outputDirectory>icons</outputDirectory>
<includes>
<include>**/*</include>
</includes>
</fileSet>
<fileSet>
<directory>conf</directory>
<outputDirectory>conf</outputDirectory>
<includes>
<include>**/*</include>
</includes>
</fileSet>
</fileSets>
</assembly>
当我跑步时我得到例外: 线程“main”中的异常java.lang.NoClassDefFoundError:org / springframework / context / support / ClassPathXmlApplicationContext
我做错了什么?
我不希望maven在lib文件夹外创建一个包含所有依赖jar的jar文件。
答案 0 :(得分:1)
<dependencySets>
<dependencySet>
<unpack>false</unpack>
<scope>runtime</scope>
<outputDirectory>lib</outputDirectory>
</dependencySet>
</dependencySets>
我需要在pom文件中自己创建类路径:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<manifest>
<mainClass>myMainclass</mainClass>
<addClasspath>true</addClasspath>
<classpathPrefix>lib/</classpathPrefix>
</manifest>
<manifestEntries>
<Class-Path>conf/</Class-Path>
</manifestEntries>
</archive>
</configuration>
</plugin>
答案 1 :(得分:0)
添加spring-context依赖项:
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>2.5.2</version>
</dependency>
您还可以在pom.xml顶部的属性中声明spring版本并引用它,例如:
<properties>
<spring.version>2.5.2</spring.version>
</properties>
然后使用:
<version>${spring.version}</version>
答案 2 :(得分:0)
Adi,
您缺少org.springframework.context.support jar
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>2.5.2</version>
</dependency>
答案 3 :(得分:0)
从您提供的汇编描述符中,您明确定义它,它应该生成所有依赖到lib /文件夹。
但是,将库jar放入lib /文件夹是一种非常常见的方法。通常在这种情况下,您将提供一个简单的脚本来启动程序,其中包括lib / *。jar下的所有jar作为类路径。
还有一个替代方案,您可以使用内部定义的类路径生成MANIFEST。
确切的解决方案基本上取决于上下文,很可能取决于您希望如何交付二进制分发。
答案 4 :(得分:0)
ClassNotFoundException
通常意味着有问题的类不在CLASSPATH中。类加载器找不到它。你假设某些东西在CLASSPATH中,但事实并非如此。解决方案是检查您的假设并找出如何在运行时在CLASSPATH中提供所有必需的类。