java在两个不同的持久化单元中使用相同的实体
我有两个数据库(dababase_sales_1和dababase_sales_2)和同一个表“sales” 我创建了实体“Sales”(com.model.Sales)
然后是2个持久性单元:
<persistence-unit name="sales_1_PU" transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<class>com.model.Sales</class>
<class>com.model.SalesPK</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<shared-cache-mode>NONE</shared-cache-mode>
<properties>
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost/dababase_sales_1"/>
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
<property name="javax.persistence.jdbc.user" value="myuser"/>
<property name="javax.persistence.jdbc.password" value="mypasswrod"/>
<property name="eclipselink.jdbc.batch-writing" value="JDBC"/>
<property name="eclipselink.jdbc.batch-writing.size" value="1000"/>
<property name="eclipselink.jdbc.cache-statements" value="false"/>
<property name="eclipselink.cache.shared.default" value="false"/>
<property name="eclipselink.logging.level" value="OFF" />
</properties>
</persistence-unit>
<persistence-unit name="sales_2_PU" transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<class>com.model.Sales</class>
<class>com.model.SalesPK</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<shared-cache-mode>NONE</shared-cache-mode>
<properties>
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost/dababase_sales_2"/>
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
<property name="javax.persistence.jdbc.user" value="myuser"/>
<property name="javax.persistence.jdbc.password" value="mypasswrod"/>
<property name="eclipselink.jdbc.batch-writing" value="JDBC"/>
<property name="eclipselink.jdbc.batch-writing.size" value="1000"/>
<property name="eclipselink.jdbc.cache-statements" value="false"/>
<property name="eclipselink.cache.shared.default" value="false"/>
<property name="eclipselink.logging.level" value="OFF" />
</properties>
</persistence-unit>
这是我的POM
<build>
<plugins>
<plugin>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<phase>install</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/lib</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>3.2.0</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>lib/</classpathPrefix>
<mainClass>${mainClass}</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
但当我使用maven编译时,我会遇到以下错误:
无法执行目标组织。阿帕奇。专家插件:maven编译器插件:3.1:project MyProject上的compile(默认编译):致命错误编译:java。lang.RuntimeException:javax。注释。处理。FilerException:尝试为com类型重新创建文件。模型SalesPK->;[帮助1]
我试图移除
<exclude-unlisted-classes>true</exclude-unlisted-classes>
但什么都没有。。 我不明白为什么
共 (0) 个答案