由于maven失败而无法通过命令行进行ant构建。我可以毫无问题地在eclipse中构建，但是当尝试通过命令行执行时，Maven阻塞并返回以下错误:
java.lang.NoSuchMethodError:org.apache.maven.artifact.ant.DependenciesTask.setPathType (Ljava/lang/String;)
设置了环境变量M2、M2_HOME和JAVA_HOME。一切似乎都是应该的，但我似乎无法弄清楚eclipse在哪里填补了空白，当涉及到任何依赖方法或库时。
POM文件<?xml version="1.0" encoding="UTF-8"?>
<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>
<groupId>com.company.webapp</groupId>
<artifactId>V6</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>company Web Site</name>
<properties>
<maven.compiler.target>1.6</maven.compiler.target>
<maven.compiler.source>1.6</maven.compiler.source>
<spring.version>3.2.4.RELEASE</spring.version>
<servlet-api.version>3.0.1</servlet-api.version>
<jaxb-api.version>2.1</jaxb-api.version>
<spring-hateoas.version>0.7.0.RELEASE</spring-hateoas.version>
<junit.version>4.11</junit.version>
<spring-mvctest.version>1.0.0.M2</spring-mvctest.version>
<httpclient.version>4.3.3</httpclient.version>
<jstl.version>1.2</jstl.version>
<jersey-client.version>1.8</jersey-client.version>
<jackson-mapper-asl.version>1.9.13</jackson-mapper-asl.version>
<jackson-core.version>2.4.0</jackson-core.version>
<jackson-databind.version>2.4.3</jackson-databind.version>
<logback-spring.version>1.0-SNAPSHOT</logback-spring.version>
<logback-classic.version>1.0.13</logback-classic.version>
<slf4j.version>1.7.5</slf4j.version>
<company-ws-util.version>1.1.5-SNAPSHOT</company-ws-util.version>
<company-util-misc.version>1.2.31-SNAPSHOT</company-util-misc.version>
<company-util-cache.version>1.4.7-SNAPSHOT</company-util-cache.version>
<java-mail.version>1.4</java-mail.version>
<commons-lang3.version>3.1</commons-lang3.version>
</properties>
<dependencies>
<!-- Spring 3 dependencies -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-oxm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>${httpclient.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${commons-lang3.version}</version>
</dependency>
<!-- Java Mail API -->
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
<version>${java-mail.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>${servlet-api.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>${jstl.version}</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-client</artifactId>
<version>${jersey-client.version}</version>
</dependency>
<!-- Jackson JSON Mapper -->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>${jackson-mapper-asl.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson-databind.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${jackson-core.version}</version>
</dependency>
<!-- Internal Libraries -->
<dependency>
<groupId>com.company.util</groupId>
<artifactId>company-util-misc</artifactId>
<version>${company-util-misc.version}</version>
</dependency>
<dependency>
<groupId>com.company.ws.util</groupId>
<artifactId>company-ws-util</artifactId>
<version>${company-ws-util.version}</version>
</dependency>
<dependency>
<groupId>com.company.util</groupId>
<artifactId>company-util-cache</artifactId>
<version>${company-util-cache.version}</version>
</dependency>
<!-- Logging -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>${logback-classic.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<!-- Test scope -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
<version>${junit.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>properties-maven-plugin</artifactId>
<version>1.0-alpha-2</version>
<executions>
<execution>
<phase>initialize</phase>
<goals>
<goal>read-project-properties</goal>
</goals>
<configuration>
<files>
<file>${basedir}/build/@mvn@/mvn.build.properties</file>
</files>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.4</version>
<configuration>
<webResources>
<resource>
<directory>${basedir}/build/${VERSION}</directory>
</resource>
</webResources>
<webappDirectory>${basedir}/build/${VERSION}</webappDirectory>
</configuration>
</plugin>
</plugins>
<directory>build/target</directory>
<finalName>${WARFILE}</finalName>
</build>
</project>
完整错误堆栈:
[echo] MVN BUILD (MAVEN):
[echo] --------------------------
[mkdir] Skipping C:"PATH"build@mvn@ because it already exists.
[propertyfile] Updating property file: C:"PATH"build@mvn@mvn.build.properties
Property "quickbuild" has not been set
[echo] Executing maven build on Developer machine (other machine)
parsing buildfile jar:file:/C:/Apps/ANT/apache-ant-1.9.5/lib/maven-artifact-ant-2.0.4-dep.jar!/org/apache/maven/artifact/ant/antlib.xml with URI = jar:file:/C:/Apps/ANT/apache-ant-1.9.5/lib/maven-artifact-ant-2.0.4-dep.jar!/org/apache/maven/artifact/ant/antlib.xml from a zip file
[antcall] Exiting C:"PATH"build.xml.
BUILD FAILED
C:"PATH"build.xml:349: The following error occurred while executing this line:
C:"PATH"build.xml:279: The following error occurred while executing this line:
C:"PATH"antimportsmvn.xml:46: Maven sub-build has failed! Error in trycatch block:
EXCEPTION BEGIN
C:"PATH"antimportsmvn.xml:38: java.lang.NoSuchMethodError: org.apache.maven.artifact.ant.DependenciesTask.setPathType(Ljava/lang/String;)V{line.separator}EXCEPTION END
at org.apache.tools.ant.taskdefs.Exit.execute(Exit.java:164)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
at net.sf.antcontrib.logic.TryCatchTask$CatchBlock.execute(TryCatchTask.java:137)
at net.sf.antcontrib.logic.TryCatchTask.execute(TryCatchTask.java:225)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
at net.sf.antcontrib.logic.IfTask.execute(IfTask.java:217)
at sun.reflect.GeneratedMethodAccessor16.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.TaskAdapter.execute(TaskAdapter.java:155)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.taskdefs.MacroInstance.execute(MacroInstance.java:396)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
at net.sf.antcontrib.logic.IfTask.execute(IfTask.java:197)
at sun.reflect.GeneratedMethodAccessor16.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.TaskAdapter.execute(TaskAdapter.java:155)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:435)
at org.apache.tools.ant.Target.performTasks(Target.java:456)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1405)
at org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:38)
at org.apache.tools.ant.Project.executeTargets(Project.java:1260)
at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:441)
at org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:105)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:435)
at org.apache.tools.ant.Target.performTasks(Target.java:456)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1405)
at org.apache.tools.ant.Project.executeTarget(Project.java:1376)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1260)
at org.apache.tools.ant.Main.runBuild(Main.java:853)
at org.apache.tools.ant.Main.startAnt(Main.java:235)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:285)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:112)
正如在注释中提到的，在Eclipse中使用的Maven Ant任务的版本与在命令行中使用的版本之间存在差异。Eclipse似乎使用了该库的新版本，其中存在方法DependenciesTask.setPathType(String)，而命令行依赖于旧版本。
通过检查首选项页面，您可以获得更多关于Eclipse正在使用哪个版本的Ant任务的信息。尝试导航到Window -> Preferences -> Ant -> Runtime，并查看Classpath选项卡中的外部库。
另一方面，从Ant构建的输出:
[echo] Executing maven build on Developer machine (other machine)
parsing buildfile jar:file:/C:/Apps/ANT/apache-ant-1.9.5/lib/maven-artifact-ant-2.0.4-dep.jar!/org/apache/maven/artifact/ant/antlib.xml with URI = jar:file:/C:/Apps/ANT/apache-ant-1.9.5/lib/maven-artifact-ant-2.0.4-dep.jar!/org/apache/maven/artifact/ant/antlib.xml from a zip file
命令行显然使用的是2.0.4版本，它位于Ant主目录的lib文件夹中。查看此页面，最新版本为2.1.3，其中包含缺失的方法。因此，将Ant lib目录中的版本更新为最新版本是有意义的(请查看项目页面上的下载链接)。
您总是可以对eclipse使用的settings.xml运行maven(使用"-s ")
我们可以通过在debug move中运行maven得到更多的描述:在运行maven时使用"-X"
好吧，下面是具体的问题和解决方案…
我对几件事感到困惑。最初，我不清楚maven-ant-tasks和maven-artifact-ant是同一个库，我认为我需要安装maven-ant-tasks，但最初的响应澄清了这一点。其次，在研究如何更新(或安装)maven-ant-tasks时，我发现这已经在我的配置中发生了，并且由于正确的方法早在2.1.2就出现了，我可以看到我们系统中的以下配置是正确的，并且问题不应该发生
我的项目配置代码:
<taskdef resource="org/apache/maven/artifact/ant/antlib.xml" uri="antlib:org.apache.maven.artifact.ant">
<classpath>
<pathelement location="${basedir}/ant/lib/maven-ant-tasks-2.1.3.jar"/>
</classpath>
</taskdef>
文档支持此操作:http://maven.apache.org/ant-tasks/installation.html(代码略有不同，但目的和结果相同)
唉，问题还在发生……在对eclipse构建输出和命令行输出进行-verbose转储和比较之后，我可以看到唯一的区别是命令行试图调用这两个文件，而当它这样做时，只加载了两个所需的方法。
查看eclipse的ant目录后，我注意到maven-ant-tasks库根本不在那里，所以我试着从我自己的安装中删除它，瞧!我本以为是多态结果，但显然不是这样的。