tomcat7-maven-plugin extraDependency似乎没有被加载

Question

我一直在使用tomcat7-maven-plugin.我想运行我的webapp,它使用嵌入式tomcat连接到PostgreSQL数据库.这是我的POM文件的相关部分:

<plugin>
    <groupId>org.apache.tomcat.maven</groupId>
    <artifactId>tomcat7-maven-plugin</artifactId>
    <version>2.0-SNAPSHOT</version>
    <executions>
        <execution>
            <id>tomcat-run</id>
            <goals>
                <goal>exec-war-only</goal>
            </goals>
            <phase>package</phase>
            <configuration>
                <path>/</path>
                <attachArtifactClassifierType>war</attachArtifactClassifierType>
                <enableNaming>true</enableNaming>
                <extraDependencies>
                    <extraDependency>
                        <groupId>postgresql</groupId>
                        <artifactId>postgresql</artifactId>
                        <version>8.4-701.jdbc4</version>
                    </extraDependency>
                </extraDependencies>
            </configuration>
       </execution>
   </executions>

执行tomcat7:运行失败

Caused by: java.lang.ClassNotFoundException: org.postgresql.Driver
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:230)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:236)
... 29 more

依赖本身是正确的(http://repo1.maven.org/maven2/postgresql/postgresql/8.4-701.jdbc4/).

我使用Maven 3.

Answer 1

参数extraDependencies不适用于运行mojo :-).请参阅此处的参数:http://tomcat.apache.org/maven-plugin-2.0-SNAPSHOT/tomcat7-maven-plugin/run-mojo.html.此参数用于exec-war参见目的http://tomcat.apache.org/maven-plugin-2.0-SNAPSHOT/executable-war-jar.html.要添加您的jdbc驱动程序,只需:

<plugin>
    <groupId>org.apache.tomcat.maven</groupId>
    <artifactId>tomcat7-maven-plugin</artifactId>
    <version>2.0-SNAPSHOT</version>
    <dependencies>
      <dependency>
       <groupId>postgresql</groupId>
       <artifactId>postgresql</artifactId>
       <version>8.4-701.jdbc4</version>
      </dependency>
    </dependencies>
</plugin>

HTH :-)