问题：
Maven-为什么在“mvn清理”之后，我需要在“mvn包”之前执行“Maven更新项目”？
公羊喜
我正在做一些测试，我想知道为什么在执行命令mvn clean后，我需要执行“Maven”
在运行“Maven”之前，我的项目似乎没有正确编译我的项目
- 我正在使用Eclipse，并通过“run as”运行命令{mvn clean}和{mvn package}
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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.project</groupId>
<artifactId>myProject</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<jmockit.version>0.0.1</jmockit.version>
</properties>
<build>
<testSourceDirectory>src/test/java/junit</testSourceDirectory>
<resources>
<resource>
<directory>src/main/java</directory>
<excludes>
<exclude>**/*.java</exclude>
</excludes>
</resource>
</resources>
<testResources>
<testResource>
<directory>src/test/java/selenium</directory>
<excludes>
<exclude>**/*.java</exclude>
</excludes>
</testResource>
</testResources>
<pluginManagement>
<plugins>
<!-- Need Java 5, which is the default since v2.3 of the maven-compiler-plugin. -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5.1</version>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.2</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
<warSourceExcludes>src/main/resources/conf_development</warSourceExcludes>
<webResources>
<resource>
<directory>src/main/resources/conf_production</directory>
<targetPath>WEB-INF/classes/</targetPath>
<includes>
<include>**/*</include>
</includes>
</resource>
<resource>
<directory>src/main/resources/conf</directory>
<targetPath>WEB-INF/classes/</targetPath>
<includes>
<include>**/*</include>
</includes>
</resource>
</webResources>
</configuration>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<argLine>
-javaagent:"${settings.localRepository}"/mockit/jmockit/${jmockit.version}/jmockit-${jmockit.version}.jar
</argLine>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>asm</groupId>
<artifactId>asm</artifactId>
<version>1.5.3</version>
</dependency>
<dependency>
<groupId>bouncycastle</groupId>
<artifactId>bcprov-jdk14</artifactId>
<version>140</version>
</dependency>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1</version>
</dependency>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0-oracle-thin-extras</artifactId>
<version>0.9.0.2</version>
</dependency>
<dependency>
<groupId>commons-betwixt</groupId>
<artifactId>commons-betwixt</artifactId>
<version>0.7</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-email</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache-core</artifactId>
<version>2.4.2</version>
</dependency>
<dependency>
<groupId>com.googlecode.ehcache-spring-annotations</groupId>
<artifactId>ehcache-spring-annotations</artifactId>
<version>1.1.3</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-annotations</artifactId>
<version>3.4.0.GA</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>3.4.0.GA</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>3.3.2.GA</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.1.2</version>
</dependency>
<dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.4</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>2.5.6</version>
</dependency>
<dependency>
<groupId>net.fckeditor</groupId>
<artifactId>java-core</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>backport-util-concurrent</groupId>
<artifactId>backport-util-concurrent</artifactId>
<version>3.1</version>
</dependency>
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc14</artifactId>
<version>10.2.0.1.0</version>
</dependency>
<dependency>
<groupId>com.ibm.icu</groupId>
<artifactId>icu4j</artifactId>
<version>3.8</version>
</dependency>
<dependency>
<groupId>mockit</groupId>
<artifactId>jmockit</artifactId>
<version>${jmockit.version}</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.0</version>
</dependency>
<dependency>
<groupId>com.lowagie</groupId>
<artifactId>itext</artifactId>
<version>2.1.0</version>
</dependency>
<dependency>
<groupId>atg.taglib.json</groupId>
<artifactId>json-taglib</artifactId>
<version>0.4.1</version>
</dependency>
<dependency>
<groupId>commons-httpclient</groupId>
<artifactId>commons-httpclient</artifactId>
<version>3.1</version>
</dependency>
<dependency>
<groupId>net.sourceforge.jexcelapi</groupId>
<artifactId>jxl</artifactId>
<version>2.6</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>1.8.5</version>
</dependency>
<dependency>
<groupId>org.quartz-scheduler</groupId>
<artifactId>quartz</artifactId>
<version>1.8.4</version>
</dependency>
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-server</artifactId>
<version>2.25.0</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring</artifactId>
<version>2.5.6.SEC03</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-agent</artifactId>
<version>2.5.6.SEC03</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>2.5.6.SEC03</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-config-browser-plugin</artifactId>
<version>2.2.1</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-convention-plugin</artifactId>
<version>2.2.1</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-core</artifactId>
<version>2.2.1</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-jasperreports-plugin</artifactId>
<version>2.2.1</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-jfreechart-plugin</artifactId>
<version>2.2.1</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-json-plugin</artifactId>
<version>2.2.1</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-spring-plugin</artifactId>
<version>2.2.1</version>
</dependency>
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity</artifactId>
<version>1.6.3</version>
</dependency>
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity-tools</artifactId>
<version>1.3</version>
</dependency>
<dependency>
<groupId>com.yahoo.platform.yui</groupId>
<artifactId>yuicompressor</artifactId>
<version>2.4.6</version>
</dependency>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>net.sf.jodreports</groupId>
<artifactId>jodreports</artifactId>
<version>2.4.0</version>
</dependency>
<dependency>
<groupId>org.springframework.ws</groupId>
<artifactId>spring-oxm</artifactId>
<version>1.5.9</version>
</dependency>
<dependency>
<groupId>org.springframework.ws</groupId>
<artifactId>spring-ws-core</artifactId>
<version>1.5.9</version>
</dependency>
<dependency>
<groupId>org.springframework.ws</groupId>
<artifactId>spring-oxm-tiger</artifactId>
<version>1.5.9</version>
</dependency>
<dependency>
<groupId>org.springframework.ws</groupId>
<artifactId>spring-ws-core-tiger</artifactId>
<version>1.5.9</version>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.1</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-xjc</artifactId>
<version>2.1</version>
</dependency>
<dependency>
<groupId>org.apache.ws.commons.axiom
</groupId>
<artifactId>axiom-api</artifactId>
<version>1.2.5</version>
</dependency>
<dependency>
<groupId>org.apache.ws.commons.axiom
</groupId>
<artifactId>axiom-impl</artifactId>
<version>1.2.5</version>
</dependency>
<dependency>
<groupId>javax.xml</groupId>
<artifactId>jaxrpc-api</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>org.seleniumhq.selenium.client-drivers</groupId>
<artifactId>selenium-java-client-driver</artifactId>
<version>1.0.1</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
</dependency>
<dependency>
<groupId>org.acegisecurity</groupId>
<artifactId>acegi-security</artifactId>
<version>1.0.7</version>
</dependency>
<dependency>
<groupId>citizen</groupId>
<artifactId>citizen</artifactId>
<version>citizen</version>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.4</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jasperreports</groupId>
<artifactId>jasperreports</artifactId>
<version>3.5.3</version>
</dependency>
</dependencies>
</project>
错误：
（记住有错误的库是一个内部库，在“Maven”之后工作正常
[INFO] Compiling 2595 source files to C:\Users\user\Documents\Dev\workspace\project\target\classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] C:\Users\user\Documents\Dev\workspace\project\src\main\java\com\project\jobs\citizen\model\service\CitizenService.java:[38
,34] cannot access org.apache.axis.client.Service
class file for org.apache.axis.client.Service not found
Resolution2Locator r2 = new Resolution2Locator ();
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2:09.448s
[INFO] Finished at: Fri Mar 22 11:55:14 BRT 2013
[INFO] Final Memory: 25M/274M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile (default-compile) on project project: Compilation failure
[ERROR] C:\Users\user\Documents\Dev\workspace\project
\src\main\java\com\project\jobs\citizen\model\service\CitizenService.java:[38
,34] cannot access org.apache.axis.client.Service
[ERROR] class file for org.apache.axis.client.Service not found
[ERROR] Resolution2Locator r2 = new Resolution2Locator();
[ERROR] -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile (default-compile) on project u
nico: Compilation failure
C:\Users\user\Documents\Dev\workspace\project\src\main\java\com\project\jobs\citizen\model\service\CitizenService.java:[38,34] can
not access org.apache.axis.client.Service
class file for org.apache.axis.client.Service not found
Resolution2Locator r2 = new Resolution2Locator ();
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:213)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.CompilationFailureException: Compilation failure
C:\Users\user\Documents\Dev\workspace\project\src\main\java\com\project\jobs\citizen\model\service\CitizenService.java:[38,34] can
not access org.apache.axis.client.Service
class file for org.apache.axis.client.Service not found
Resolution2Locator r2 = new Resolution2Locator ();
at org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:729)
at org.apache.maven.plugin.CompilerMojo.execute(CompilerMojo.java:128)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
... 19 more
[ERROR]
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
共有3个答案
锺离飞鸣
它将更新文件如果任何新的更新avialable.you可以使用maven安装后maven清洁
徐学潞
EclipseM2e插件（这是一个简化）读取POM文件并将其转换为Eclipse的指令，以便Eclipse能够完成它的任务。因为Eclipse一直处于控制之中，所以您的视图得到了正确的更新，一切都非常顺利。m2e不支持一些更高级的带有插件的Maven操作，因此这些操作不会发生。一些简单的东西，比如类路径与Maven的工作方式不同——m2e无论如何都使用“测试”类路径，因为Eclipse无法预测您想要运行什么。
另一方面，执行“运行方式”
我通常会远离“跑步作为”
如果你只是想开发一个Maven项目，我发现m2e集成工作得很好。我使用Jenkins为我处理打包和部署，所以我只使用Eclipse来编辑和测试我的代码。
张德佑
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