maven 编译错误：文件名、目录名或卷标语法不正确

Question

我正在编译我的pom.xml 文件并收到以下编译错误

Failed to execute goal org.apache.maven.plugins:maven-dependency-plugin:2.5.1:copy-dependencies (copy-dependencies) on project ElasticSearchUtility: Error copying artifact from C:\Users\10641516\.m2\repository\org\apache\lucene\lucene-sandbox\7.1.0\lucene-sandbox-7.1.0.jar to D:\Karthikeyan\ElasticSearch\ElasticSearch_Tesing\target\dependency-
    [ERROR] jars\lucene-sandbox-7.1.0.jar: The filename, directory name, or volume label syntax is incorrect

但是需要的.jar文件在指定的路径下。

我创建了两个 java 文件，我的 maven 项目一个是 POJO 类，另一个是 java 主类文件。我想将我的项目制作为一个可执行的 jar 文件，我想使用java -jar 命令在外部运行它。

请找到我的 pom.xml 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">
<modelVersion>4.0.0</modelVersion>
<groupId>ElasticSearchUtility</groupId>
<artifactId>ElasticSearchUtility</artifactId>
<version>1.0.0-SNAPSHOT</version>

<dependencies>
    <dependency>
        <groupId>org.elasticsearch</groupId>
        <artifactId>elasticsearch</artifactId>
        <version>6.1.2</version>
    </dependency>
    <dependency>
        <groupId>org.elasticsearch.client</groupId>
        <artifactId>elasticsearch-rest-high-level-client</artifactId>
        <version>6.1.2</version>
    </dependency>
    <dependency>
        <groupId>org.elasticsearch.client</groupId>
        <artifactId>rest</artifactId>
        <version>5.1.2</version>
    </dependency>

</dependencies>

<build>

        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-eclipse-plugin</artifactId>
                <version>2.9</version>
                <configuration>
                    <downloadSources>true</downloadSources>
                    <downloadJavadocs>false</downloadJavadocs>
                </configuration>
            </plugin>

            <!-- Set a compiler level -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.3.2</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>

            <!-- Make this jar executable -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>**/log4j.properties</exclude>
                    </excludes>
                    <archive>
                        <manifest>
                            <addClasspath>true</addClasspath>
                            <mainClass>ProjectJar.project.App</mainClass>
                            <classpathPrefix>dependency-jars/</classpathPrefix>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>
            <!-- Copy project dependency -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <version>2.5.1</version>
                <executions>
                    <execution>
                        <id>copy-dependencies</id>
                        <phase>package</phase>
                        <goals>
                            <goal>copy-dependencies</goal>
                        </goals>
                        <configuration>
                            <!-- exclude junit, we need runtime dependency only -->
                            <includeScope>runtime</includeScope>
                            <outputDirectory>${project.build.directory}/dependency-
                                jars/</outputDirectory>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
            </plugins>
    </build>
    </projects>

Answer 1

锯断错误信息：

  ... D:\Karthikeyan\ElasticSearch\ElasticSearch_Tesing\target\dependency- 

建议您需要将maven-dependency-plugin的outputDirectory配置更改为：

                    <configuration>
                        <!-- exclude junit, we need runtime dependency only -->
                        <includeScope>runtime</includeScope>
                        <outputDirectory>
                            ${project.build.directory}/dependency-jars/
                        </outputDirectory>
                    </configuration>

去掉中间值的换行符。