[英]Trying to set up Java DB: “Class Not Found: JDBC driver org.apache.derby.jdbc.EmbeddedDriver could not be loaded”
[英]Configuration error. Class [org.apache.derby.jdbc.EmbeddedDriver] not found while connecting to DB
我正在使用命令mvn exec:java
从cmd
运行我的应用程序。我的 Persistence.xml 属性是:
<properties>
<property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.EmbeddedDriver" />
<property name="javax.persistence.jdbc.url" value="jdbc:derby:DB;create=true" />
<property name="javax.persistence.jdbc.user" value="test" />
<property name="javax.persistence.jdbc.password" value="test" />
<!-- EclipseLink should create the database schema automatically -->
<property name="eclipselink.ddl-generation" value="create-tables" />
<property name="eclipselink.ddl-generation.output-mode"
value="database" />
<property name="connection.autocommit" value="false"/>
</properties>
我的 pom.xml 依赖项和构建属性是:-
<dependencies>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>eclipselink</artifactId>
<version>2.5.0</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.connectors</groupId>
<artifactId>jersey-grizzly-connector</artifactId>
<version>2.16</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-grizzly2-http</artifactId>
<version>2.16</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-grizzly2-servlet</artifactId>
<version>2.16</version>
</dependency>
<dependency>
<groupId>org.glassfish.grizzly</groupId>
<artifactId>grizzly-framework</artifactId>
<version>2.3.18</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5.1</version>
<inherited>true</inherited>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<executions>
<execution>
<goals>
<goal>java</goal>
</goals>
</execution>
</executions>
<configuration>
<mainClass>com.example.Main</mainClass>
</configuration>
</plugin>
</plugins>
</build>
如果在eclipse
使用run as java application
运行主类,它运行良好,但使用命令mvn exec:java
会给出配置错误的错误。 找不到类 [org.apache.derby.jdbc.EmbeddedDriver]。
对于任何在使用 Derby 时遇到问题的人:现在(从版本10.15.2.0 开始),他们的驱动程序是org.apache.derby.iapi.jdbc.AutoloadedDriver
。
您的pom.xml
中缺少带有Derby
驱动程序的库。 尝试在 pom.xml 中添加:
<dependency>
<groupId>org.apache.derby</groupId>
<artifactId>derbyclient</artifactId>
<version>10.11.1.1</version>
</dependency>
在 Eclipse 中它正在运行可能是因为您手动将驱动程序添加到类路径。
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