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我正在尝试构建我的 pom.xml,以便在运行“mvn install”时可以自动创建我的数据库模式。我正在使用“maven-cayenne-plugin”来做到这一点。这是插件被调用(在集成测试阶段),我可以看到输出。但是 mojo 失败了,但有一个例外:(我使用 -e 和 -X 标志来查看这个)。

java.lang.ClassNotFoundException: org.apache.derby.jdbc.ClientDriver

(如果我尝试使用 EmbeddedDriver 以及是否包含“derbyclient”或仅包含“derby”作为我的依赖项,我会得到相同的结果)。

这是一个应该复制问题的 pom.xml。我在 Windows 上使用 MVN 3。[ Apache Maven 3.0.4 (r1232337; 2012-01-17 08:44:56+0000)]

<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>myproject</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.cayenne.plugins</groupId>
                <artifactId>maven-cayenne-modeler-plugin</artifactId>
                <version>3.2M1</version>
            </plugin>
            <plugin>
                <groupId>org.apache.cayenne.plugins</groupId>
                <artifactId>maven-cayenne-plugin</artifactId>
                <version>3.2M1</version>
                <executions>
                    <execution>
                        <id>cgen</id>
                        <configuration>
                            <superPkg>com.mycompany.model.generated</superPkg>
                            <map>${project.build.sourceDirectory}/../resources/datamap.map.xml</map>
                            <destDir>${project.build.sourceDirectory}</destDir>
                        </configuration>
                        <goals>
                            <goal>cgen</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>cdbgen</id>
                        <configuration>
                            <map>${project.build.sourceDirectory}/../resources/datamap.map.xml</map>
                            <driver>org.apache.derby.jdbc.ClientDriver</driver>
                            <url>jdbc:derby:memory:tracedb;create=true</url>
                            <username>test</username>
                        </configuration>
                        <goals>
                            <goal>cdbgen</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
    <dependencies>
<dependency>
            <groupId>org.apache.derby</groupId>
            <artifactId>derbyclient</artifactId>
            <version>10.10.1.1</version>
            <scope>compile</scope>
        </dependency>

    </dependencies>
</project>

这还需要一个有效的 cayenne“datamap.map.xml”文件(在 src/main/resources 中),这是我之前制作的一个:

<?xml version="1.0" encoding="utf-8"?>
<data-map xmlns="http://cayenne.apache.org/schema/3.0/modelMap"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://cayenne.apache.org/schema/3.0/modelMap http://cayenne.apache.org/schema/3.0/modelMap.xsd"
     project-version="6">
    <db-entity name="TEST">
        <db-attribute name="ID" type="INTEGER" isPrimaryKey="true" isMandatory="true"/>
    </db-entity>
</data-map>

编辑:

添加更多信息。

derbyclient-10.10.1.1.jar 确实包含类“org.apache.derby.jdbc.ClientDriver”(只是从 Netbeans 扩展了 JAR)。

-X 标志似乎表明 CLASSPATH 正确引用了 JAR:

[DEBUG]   (f) classpathElements = [<PROJECT-PATH>\mvn\target\classes, <HOME-DIR>\.m2\repository\org\apache\derby\derbyclient\10.10.1.1\derbyclient-10.10.1.1.jar]

解决方案:工作 pom.xml (请参阅答案和我的评论):

<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>myproject</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.cayenne.plugins</groupId>
                <artifactId>maven-cayenne-modeler-plugin</artifactId>
                <version>3.2M1</version>
            </plugin>
            <plugin>
                <groupId>org.apache.cayenne.plugins</groupId>
                <artifactId>maven-cayenne-plugin</artifactId>
                <version>3.2M1</version>
<dependencies>
      <dependency>
        <groupId>org.apache.derby</groupId>
        <artifactId>derby</artifactId>
        <version>10.10.1.1</version>
      </dependency>
   </dependencies>
                <executions>
                    <execution>
                        <id>cgen</id>
                        <configuration>
                            <superPkg>com.mycompany.model.generated</superPkg>
                            <map>${project.build.sourceDirectory}/../resources/datamap.map.xml</map>
                            <destDir>${project.build.sourceDirectory}</destDir>
                        </configuration>
                        <goals>
                            <goal>cgen</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>cdbgen</id>
                <configuration>
                            <map>${project.build.sourceDirectory}/../resources/datamap.map.xml</map>
                            <driver>org.apache.derby.jdbc.EmbeddedDriver</driver>
                            <url>jdbc:derby:memory:tracedb;create=true</url>
                            <username>test</username>
                        </configuration>
                        <goals>
                            <goal>cdbgen</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
    <dependencies>
<dependency>
            <groupId>org.apache.derby</groupId>
            <artifactId>derbyclient</artifactId>
            <version>10.10.1.1</version>
            <scope>compile</scope>
        </dependency>

    </dependencies>
</project>
4

1 回答 1

6

为确保 Derby 驱动程序在插件执行期间(相对于代码编译期间)可用,您需要将其添加为插件本身的依赖项:

<plugin>
   <groupId>org.apache.cayenne.plugins</groupId>
   <artifactId>maven-cayenne-plugin</artifactId>
   <version>3.2M1</version>
   <dependencies>
      <dependency>
        <groupId>org.apache.derby</groupId>
        <artifactId>derbyclient</artifactId>
        <version>10.10.1.1</version>
      </dependency>
   </dependencies>
   ....
</plugin>
于 2013-08-23T16:53:30.357 回答