dependencies.dependency.version‘缺少错误

Question

我正在尝试使用apache创建一个包。当我运行mvn clean install命令时，它会给出以下错误：

javax.servlet:servlet-api.jar缺少dependencies.dependency.version‘

我已将‘servlet-api.jar’放置在项目的资源文件夹中。

有人能告诉我把那个jar文件放在哪里吗？

更新:这是我的pom.xml

    <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">

 <parent>
   <artifactId>felix-parent</artifactId>
   <groupId>org.apache.felix</groupId>
   <version>2.1</version>
   <relativePath>../pom/pom.xml</relativePath>
 </parent>

 <modelVersion>4.0.0</modelVersion>

 <artifactId>maven-bundle-plugin</artifactId>
 <version>2.4.1-SNAPSHOT</version>
 <packaging>maven-plugin</packaging>

 <name>Maven Bundle Plugin</name>
 <description>
  Provides a maven plugin that supports creating an OSGi bundle
  from the contents of the compilation classpath along with its
  resources and dependencies. Plus a zillion other features.
  The plugin uses the Bnd tool (http://www.aqute.biz/Code/Bnd)
 </description>

 <scm>
  <connection>scm:svn:http://svn.apache.org/repos/asf/felix/trunk/bundleplugin</connection>
  <developerConnection>scm:svn:https://svn.apache.org/repos/asf/felix/trunk/bundleplugin</developerConnection>
  <url>http://svn.apache.org/repos/asf/felix/trunk/bundleplugin</url>
 </scm>

 <build>
  <plugins>
   <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <configuration>
     <source>1.5</source>
     <target>1.5</target>
    </configuration>
   </plugin>
  </plugins>
 </build>

 <dependencies>
        <!-- Provided APIs -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
        </dependency>

    </dependencies>

 <reporting>
  <plugins>
   <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-plugin-plugin</artifactId>
    <version>3.2</version>
   </plugin>
   <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-changes-plugin</artifactId>
    <version>2.9</version>
    <configuration>
     <component>12311143</component>
     <versionPrefix>maven-bundle-plugin-</versionPrefix>
     <statusIds>Resolved,Closed</statusIds>
     <maxEntries>1000</maxEntries>
     <issueManagementSystems>
      <issueManagementSystem>JIRA</issueManagementSystem>
     </issueManagementSystems>
     <useJql>true</useJql>
    </configuration>
   </plugin>
  </plugins>
 </reporting>

</project>

谢谢安德森

Answer 1

您还没有在version中添加dependency标记。

<dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>1.0.0</version>   //Add the version.
</dependency>

Answer 2

我犯了同样的错误，原因略有不同。

我的项目使用依赖关系管理(由于某种原因有2个<dependencyManagement>部分)，并且有许多模块和子模块。

最高层pom有：

    <dependencyManagement>
        <dependency>
            <groupId>org.apache.spark</groupId>
            <artifactId>spark-core_2.10</artifactId>
            <version>${spark.version}</version>
        </dependency>
    </dependencyManagement>

分层次pom

    <dependencyManagement>
        <dependency>
            <groupId>org.apache.spark</groupId>
            <artifactId>spark-core_2.10</artifactId>
            <scope>provided</scope>
        </dependency>
    </dependencyManagement>

叶荚

    <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-core_2.10</artifactId>
    </dependency>

为了解决这个问题，我从中间级别的pom中删除了<dependencyManagement>部分，并将叶pom更改为

    <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-core_2.10</artifactId>
        <scope>provided</scope>
    </dependency>

Answer 3

消息非常清楚:在pom的dependencies元素中，有一个带有javax.servlet:servlet-api.jar的dependency元素。在这个dependency元素中，必须有一个version元素，但是您没有提供它。

<dependencies>
    <!-- Provided APIs -->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>

        <!-- missing version here: -->
        <version>3.0</version>
    </dependency>
</dependencies>

请注意，3.0只是一个例子。提供正确的版本。