我正在尝试开发一个maven插件,该插件使用项目的资源文件,将其用作插件。我将suggestion实现到我的maven-plugin项目中并且构建得很好。但是,当我清洁&构建我使用该插件的项目,我得到了这个例外:
“无法执行目标 sample.plugin:maven-plugin:1.0-SNAPSHOT:convertproperties(默认值)on project temp:无法检索组件配置器 包含项目依赖关系以配置mojo sample.plugin:行家-插件:1.0-SNAPSHOT:convertproperties: java.util.NoSuchElementException 角色:org.codehaus.plexus.component.configurator.ComponentConfigurator roleHint:include-project-dependencies“
maven-plugin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">
<modelVersion>4.0.0</modelVersion>
<groupId>sample.plugin</groupId>
<artifactId>maven-plugin</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>maven-plugin</packaging>
<name>maven-plugin</name>
<dependencies>
<dependency>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-utils</artifactId>
<version>[1.5.0, 1.5.1 ]</version>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-plugin-api</artifactId>
<version>2.0.9</version>
</dependency>
<dependency>
<groupId>org.apache.maven.plugin-tools</groupId>
<artifactId>maven-plugin-annotations</artifactId>
<version>3.2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.9.3</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.3</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20090211</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>1.4</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-project</artifactId>
<version>2.0.9</version>
<exclusions>
<exclusion>
<artifactId>maven-artifact</artifactId>
<groupId>org.apache.maven</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-model</artifactId>
<version>2.0.9</version>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-core</artifactId>
<version>2.0.9</version>
<exclusions>
<exclusion>
<artifactId>maven-artifact</artifactId>
<groupId>org.apache.maven</groupId>
</exclusion>
<exclusion>
<artifactId>maven-repository-metadata</artifactId>
<groupId>org.apache.maven</groupId>
</exclusion>
<exclusion>
<artifactId>wagon-provider-api</artifactId>
<groupId>org.apache.maven.wagon</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-artifact</artifactId>
<version>3.0</version>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-repository-metadata</artifactId>
<version>2.0.9</version>
</dependency>
<dependency>
<groupId>org.apache.maven.wagon</groupId>
<artifactId>wagon-provider-api</artifactId>
<version>1.0-beta-2</version>
</dependency>
</dependencies>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>descriptor</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-plugin-plugin</artifactId>
<version>2.3</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.4</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
我的项目使用maven-plugin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">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mycompany</groupId>
<artifactId>temp</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>temp</name>
<properties>
<endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.9.3</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.3</version>
</dependency>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-web-api</artifactId>
<version>6.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20090211</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>sample.plugin</groupId>
<artifactId>maven-plugin</artifactId>
<version>1.0-SNAPSHOT</version>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>convertproperties</goal>
</goals>
</execution>
</executions>
<configuration>
<sourcePath>/lang</sourcePath>
<destinationPath>lang_json</destinationPath>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<additionalClasspathElements>
<additionalClasspathElement>src\main\webapp\lang</additionalClasspathElement>
</additionalClasspathElements>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
<compilerArguments>
<endorseddirs>${endorsed.dir}</endorseddirs>
</compilerArguments>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.1.1</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.1</version>
<executions>
<execution>
<phase>validate</phase>
<goals>
<goal>copy</goal>
</goals>
<configuration>
<outputDirectory>${endorsed.dir}</outputDirectory>
<silent>true</silent>
<artifactItems>
<artifactItem>
<groupId>javax</groupId>
<artifactId>javaee-endorsed-api</artifactId>
<version>6.0</version>
<type>jar</type>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
<resources>
<resource>
<directory>src/main/resources</directory>
</resource>
</resources>
</build>
</project>
任何帮助都非常有用,谢谢。
答案 0 :(得分:1)
我找到了一个非常好的解决方案来使用maven-plugin中的项目资源。 首先,我放弃使用suggestion。 我的插件的目的是转换一些资源(.properties)文件并将它们保存到项目中存储jsp页面的位置。因此,第一步是复制所需的资源文件,并通过使用另一个名为“maven-antrun-plugin”的maven-plugin将其重命名为:
<plugin>
<artifactId>maven-antrun-plugin</artifactId>
<executions>
<execution>
<id>CopyLanguagePropertiesAsJson</id>
<phase>compile</phase>
<configuration>
<tasks>
<copy file="${basedir}\src\main\resources\x.properties"
tofile="${basedir}\src\main\webapp\x\y.z" />
</tasks>
</configuration>
<goals>
<goal>run</goal>
</goals>
</execution>
</executions>
</plugin>
在该移动之后,我将打开的属性文件和目标文件作为变量键入“file”发送到我的插件中并转换属性文件并存储到转换后的文件中==&gt; x.properties - &gt; y.z 我说开了,因为maven的工作就像tihs一样;在构建时打开为某些maven-plugins设置为变量的文件,并发送那些作为这些文件的引用的对象。 maven-plugin可以通过这种方式更改这些文件。
像这样:
<plugin>
<groupId>group.id</groupId>
<artifactId>artifact-id</artifactId>
<version>x.x.x</version>
<configuration>
<properties>
<file>${basedir}\src\main\resources\x.properties</file>
</properties>
<convertedFiles>
<file>${basedir}\src\main\webapp\x\y.z</file>
</jsons>
</convertedFiles>
</plugin>
这些文件是在我的插件的代码(类扩展AbstractMojo)中获取的,如下所示:
/**
* @parameter
*/
private File[] properties;
/**
* @parameter
*/
private File[] convertedFiles;
这些步骤完全实现了将.properties文件转换为另一个文件并存储在项目某处的目标。
此外,我遇到了一个异常,它告诉在使用它的项目的构建时间执行maven-plugin时找不到某些类。这是因为无法在当前项目的构建时找到所需的maven-plugin jar文件。解决方法是使用名为“maven-assembly-plugin”的插件来构建你的maven-plugin的jar,包括你的maven-plugin使用的依赖jar库。 maven-plugin的pom文件中插件的配置:
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
<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>
</plugin>
如果在某些情况下,插件无法按照描述编译你的jar,可能是因为你的maven-plugin中没有包含一个主类。因为使用这种将所有jar文件编译成一个的插件的原因是要单独执行当前项目的jar本身,不需要运行时的任何其他类(构建独立的jar文件)。因此,只需创建一个使用maven-plugin类的主类(类扩展AbstractMojo)并尝试再次编译。成功编译后你可以删除你的主类,它会在没有主类的情况下再次成功构建你的maven-plugin。
如果这篇文章对某人有用,我将非常高兴。