Question

我正在尝试构建我的pom.xml，以便在运行“mvn install＆＃39;”时自动创建数据库架构。我正在使用＆＃34; maven-cayenne-plugin＆＃34;去做这个。这是插件被调用（在集成测试阶段），因为我可以看到输出。但是mojo失败了，除了:(我用-e和-X标志来看这个）。

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

（如果我尝试使用EmbeddedDriver，我会得到相同的内容，无论我是否包含＆＃39; derbyclient＆＃39;或仅仅是＆＃39; derby＆＃39;作为我的依赖项。）

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>

这也需要一个有效的cayenne＆＃34; datamap.map.xml＆＃34;文件（在src / main / resources中），这是我之前制作的文件：

<?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＆＃39; org.apache.derby.jdbc.ClientDriver＆＃39; （刚刚从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：使用pom.xml（参见答案和评论）：

<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>

Answer 1

要确保在插件执行期间（与代码编译期间相比）可以使用Derby驱动程序，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>

Derby JDBC驱动程序在集成范围内的依赖范围（cayenne）

1 个答案: