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>