为什么maven编译器不能从depedency中解析类？

Question

Eclipse可以构建这个项目，依赖jar在本地存储库中，编译器列出jar。我正在使用Eclipse Helios和Maven Integration For Eclipse (0.10.2)；

但是它失败了，因为编译器不能从PropertiesEditor -beans-2.5.6.jar中解析出来。

以下是构建过程的完整报告

http://wellingtonpeoplescentre.org.nz/geek/maven-wigout.txt

这是我的POM。

<?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>witerat</groupId>
 <artifactId>iWPC</artifactId>
 <packaging>war</packaging>
 <version>0.0.1-SNAPSHOT</version>
 <name>WPC on the web</name>
 <url>http://wellingtonpeoplescentre.org.nz</url>
 <organization>
  <name>Wellington People's Centre</name>
  <url>http://wellingtonpeoplescentre.org.nz</url>
 </organization>


 <build>
  <defaultGoal>package</defaultGoal>
  <finalName>iBffsdb</finalName>
  <sourceDirectory>src/main/java</sourceDirectory>
  <testSourceDirectory>src/test/java</testSourceDirectory>
  <directory>target</directory>  
  <resources>
   <resource>
    <directory>src/main/resources</directory>
   </resource>
  </resources>
  <testResources>
   <testResource>
    <directory>src/test/resources</directory>
   </testResource>
  </testResources>
  <plugins>
   <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-war-plugin</artifactId>

    <version>2.1-beta-1</version>
    <configuration>
    <overlays>
    <!-- 
      <overlay>      
       <groupId>org.dojotoolkit</groupId>       
       <artifactId>dojo-war</artifactId>
       <targetPath>javascript</targetPath>
      </overlay> -->
      <overlay>
       <groupId>jcivicrm-dao</groupId>
       <artifactId>jcivicrm-dao</artifactId>
       <type>jar</type>
       <targetPath>WEB-INF/classes</targetPath>
      </overlay>
    </overlays>
    <warSourceDirectory>WebContent</warSourceDirectory>
    </configuration>
   </plugin>
   <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>2.3.1</version>
    <configuration>
        <encoding>Cp1252</encoding>


     <verbose>true</verbose>    
     <source>1.6</source>
     <target>1.6</target>
    </configuration>
   </plugin>

  </plugins>
 </build>
 <repositories>
  <repository>
   <id>snapshots-local</id>
   <name>snaps</name>
   <url>http://localhost:12120/nexus-webapp-1.7.1/content/repositories/snapshots/</url>
   <releases>
    <enabled>false</enabled>
   </releases>
   <snapshots>
     <enabled>true</enabled>
    <updatePolicy>always</updatePolicy>
    <checksumPolicy>warn</checksumPolicy>
   </snapshots>
  </repository>
 </repositories>
 <dependencies>
  <dependency>
   <groupId>jcivicrm-dao</groupId>
   <artifactId>jcivicrm-dao</artifactId>
   <version>0.0.1-SNAPSHOT</version>
  </dependency><dependency>
   <groupId>JCivicrm-platform</groupId>
   <artifactId>JCivicrm-platform</artifactId>
   <version>0.0.1-SNAPSHOT</version>
  </dependency><dependency>
   <groupId>JCiviCRM</groupId>
   <artifactId>JCiviCRM</artifactId>
   <version>0.0.1-SNAPSHOT</version>
  </dependency><dependency>
   <groupId>nz.org.wpc.user.security</groupId>
   <artifactId>nz.org.wpc.user.security</artifactId>
   <version>0.0.1-SNAPSHOT</version>
    </dependency><dependency>
   <groupId>com.h2database</groupId>
   <artifactId>h2</artifactId>
   <version>1.1.111</version>
  </dependency><dependency>
   <groupId>commons-collections</groupId>
   <artifactId>commons-collections</artifactId>
   <version>3.2.1</version>
  </dependency><dependency>
   <groupId>commons-dbcp</groupId>
   <artifactId>commons-dbcp</artifactId>
   <version>1.2.2</version>
  </dependency><dependency>
   <groupId>javax.servlet</groupId>
   <artifactId>servlet-api</artifactId>
   <version>2.4</version> 
   <scope>provided</scope>
  </dependency><dependency>
   <groupId>javax</groupId>
   <artifactId>mail</artifactId>
   <version>1.5</version>
   <scope>system</scope>
   <systemPath>c:\sun\sdk\lib\mail.jar</systemPath>
  </dependency><dependency>
   <groupId>javax.transaction</groupId>
   <artifactId>jta</artifactId>
   <version>1.0.1B</version>
  </dependency><dependency>
   <groupId>junit</groupId>
   <artifactId>junit</artifactId>
   <version>3.8.2</version>
   <scope>system</scope>
   <systemPath>C:\dev\eclipse\plugins\org.junit_3.8.2.v20080602-1318\junit.jar</systemPath>
  </dependency><dependency>
     <groupId>net.sf.ehcache</groupId>
     <artifactId>ehcache</artifactId>
     <version>1.6.0</version>
    </dependency><dependency>
   <groupId>net.sf.json-lib</groupId>
   <artifactId>json-lib-ext-spring</artifactId>
   <version>1.0.2</version>
  </dependency><dependency>
     <groupId>org.aspectj</groupId>
     <artifactId>aspectjrt</artifactId>
     <version>1.5.4</version>
     <scope>runtime</scope>
  </dependency><dependency>
   <groupId>org.springframework</groupId>
   <artifactId>spring-orm</artifactId>
   <version>2.5.6</version>
  </dependency><dependency>
   <groupId>org.springframework</groupId>
   <artifactId>spring-webmvc</artifactId>
   <version>2.5.6</version>
  </dependency><dependency>
   <groupId>org.springframework</groupId>
   <artifactId>spring-context-support</artifactId>
   <version>2.5.6</version>
  </dependency><dependency>
   <groupId>org.springframework</groupId>
   <artifactId>spring-jdbc</artifactId>
   <version>2.5.6</version>
  </dependency><dependency>
   <groupId>org.springframework.security</groupId>
   <artifactId>spring-security-core</artifactId>
   <version>2.0.4</version>
   <exclusions>
    <exclusion>
     <groupId>org.springframework</groupId>
     <artifactId>spring-aop</artifactId>
    </exclusion><exclusion>
     <groupId>org.springframework</groupId>
     <artifactId>spring-support</artifactId>
    </exclusion><exclusion>
     <groupId>org.springframework</groupId>
     <artifactId>spring-remoting</artifactId>
    </exclusion>
   </exclusions>
  </dependency><dependency>
   <groupId>org.springframework</groupId>
   <artifactId>spring-aop</artifactId>
   <version>2.5.6</version>
  </dependency><dependency>
   <groupId>org.springframework.security</groupId>
   <artifactId>spring-security-acl</artifactId>
   <version>2.0.4</version>
  </dependency><dependency>
     <groupId>org.springframework.security</groupId>
     <artifactId>spring-security-core-tiger</artifactId>
     <version>2.0.4</version>
    </dependency><dependency>
     <groupId>org.springframework.security</groupId>
     <artifactId>spring-security-taglibs</artifactId>
     <version>2.0.5.RELEASE</version>
    </dependency><dependency>
   <groupId>org.springframework</groupId>
   <artifactId>spring-beans</artifactId>
   <version>2.5.6</version>
   <type>jar</type>
   <scope>compile</scope>
  </dependency><dependency>
   <groupId>velocity</groupId>
   <artifactId>velocity</artifactId>
   <version>1.4</version>
  </dependency><dependency>
   <groupId>org.hibernate</groupId>
   <artifactId>hibernate</artifactId>
   <version>3.2.6.ga</version>
   <type>jar</type>
   <scope>compile</scope>
  </dependency>
 </dependencies>

 <distributionManagement>
  <repository>
   <id>releases-local</id>
   <name>releases</name>
   <url>http://localhost:12120/nexus-webapp-1.7.1/content/repositories/releases/</url>
  </repository>
  <snapshotRepository>
   <id>snapshot-local</id>
   <name>snaps</name>
   <url>http://localhost:12120/nexus-webapp-1.7.1/content/repositories/snapshots/</url>
  </snapshotRepository>
 </distributionManagement>
</project>

Answer 1

是的，m2eclipse是一个老版本，或者包含几个bug。

你好，你遇到了同样的问题，我已经纠结了20多个小时。m2eclipse插件在其属性中包含了J2SE 1.5编译器，即使您在pom.xml中指定了正确的编译器，它也经常会中断。

create your own command: 
1) right click on project
2) Run as 
3) Run as maven build (5-th one)
4) on configuration panel specify your goals (site / test / clean)
5) **on JRE panel specify your JRE 1.6**
6) save your command as e.g. "maven site JDK 6"
7) run everything using your customs commands ("maven site JDK 6"), not built in commands. 

以下是我的其他技巧1)使用您自己的maven，而不是在m2eclipse中构建，您可以在m2eclipse首选项中切换到它

2)将存储库位置从愚蠢的C:\Users\current_user-m2\repository更改为D:\repository或不带~或任何其他特殊字母的任何其他正常路径

3)在恐慌前，用自己的maven检查控制台中的所有内容。例如，我的命令如下

mvn site
mvn install 
mvn tomcat:redeploy 

在控制台上工作得很好，但在eclipse内部却失败了。这意味着m2eclipse参数是错误的，您应该设置自己的参数。

4)不要依赖上下文命令(右键单击- run as - maven test / site / build)在run as - maven内置菜单中创建自己的命令，选择正确的JRE版本(在我的例子中是1.7)，并添加任何额外的参数。不要忘了给这个命令起个名字，比如："maven tomcat:redeploy JDK7“-这将给你一个很好的机会运行你想要的任何东西，并且不会面临90%的m2eclipse问题和bug。

另外，我在maven 2和m2eclipse上挣扎了20多个小时。希望我的技巧对某些人有用。