我正在努力解决 spring-boot 应用程序的基本配置，并使用 OpenJPA 作为 jpa 实现。基本上我总是以:
原因:org.apache.openjpa.util.MetaDataException:类型“class com.openjpa.example.Customer”尚未增强。
我的配置如下所示:
package com.openjpa.example;
@SpringBootApplication
public class Application extends JpaBaseConfiguration {
protected Application(DataSource dataSource, JpaProperties properties,
ObjectProvider<JtaTransactionManager> jtaTransactionManagerProvider) {
super(dataSource, properties, jtaTransactionManagerProvider);
}
@Override
protected AbstractJpaVendorAdapter createJpaVendorAdapter() {
OpenJpaVendorAdapter jpaVendorAdapter = new OpenJpaVendorAdapter();
jpaVendorAdapter.setShowSql(true);
return jpaVendorAdapter;
}
@Override
protected Map<String, Object> getVendorProperties() {
HashMap<String, Object> map = new HashMap<String, Object>();
map.put("openjpa.Log", "DefaultLevel=TRACE, Tool=INFO, SQL=TRACE, Runtime=TRACE");
map.put("openjpa.jdbc.MappingDefaults", "IndexLogicalForeignKeys=false,IndexDiscriminator=false");
map.put("openjpa.jdbc.SynchronizeMappings", "buildSchema(ForeignKeys=true)");
map.put("openjpa.RuntimeUnenhancedClasses", "supported");
map.put("openjpa.DynamicEnhancementAgent", "false");
map.put("openjpa.weaving", "false");
return map;
}
public static void main(String[] args) {
CustomerRepository repository = SpringApplication.run(Application.class, args).getBean(CustomerRepository.class);
repository.save(new Customer("Richard", "Feynman"));
System.out.println(repository.findAll());
}
}
和pom.xml:
<profiles>
<profile>
<id>static-weaving</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.openjpa</groupId>
<artifactId>openjpa-maven-plugin</artifactId>
<configuration>
<includes>**/openjpa/*.class</includes>
<addDefaultConstructor>true</addDefaultConstructor>
<enforcePropertyRestrictions>true</enforcePropertyRestrictions>
</configuration>
<executions>
<execution>
<id>enhancer</id>
<phase>process-classes</phase>
<goals>
<goal>enhance</goal>
</goals>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.apache.openjpa</groupId>
<artifactId>openjpa</artifactId>
<version>${openjpa.version}</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>load-time-weaving</id>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-instrument</artifactId>
<version>${spring.version}</version>
</dependency>
</dependencies>
<configuration>
<argLine>-javaagent:${settings.localRepository}/org/springframework/spring-instrument/${spring.version}/spring-instrument-${spring.version}.jar</argLine>
</configuration>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-instrument</artifactId>
<version>${spring.version}</version>
</dependency>
</dependencies>
<configuration>
<agent>${settings.localRepository}/org/springframework/spring-instrument/${spring.version}/spring-instrument-${spring.version}.jar</agent>
<agent>${settings.localRepository}/org/apache/openjpa/openjpa/${openjpa.version}/openjpa-${openjpa.version}.jar</agent>
</configuration>
</plugin>
</plugins>
</build>
</profile>
</profiles>
有人知道这里出了什么问题吗？
最佳答案
这是在构建时增强实体类的 pom 条目。这对我有用。 另请注意，您需要 META-INF/persistence.xml 在构建时增强类，而在运行时则不需要。因此您可以在创建 jar 时排除 persistence.xml。
<pluginManagement>
<plugins>
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>org.apache.openjpa</groupId>
<artifactId>openjpa-maven-plugin</artifactId>
<versionRange>2.2.0</versionRange>
<goals>
<goal>enhance</goal>
</goals>
</pluginExecutionFilter>
<action>
<execute />
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
<includes>**/domain/*.class</includes>
<addDefaultConstructor>true</addDefaultConstructor>
<enforcePropertyRestrictions>true</enforcePropertyRestrictions>
</configuration>
</plugin>
</plugins>
</pluginManagement>
<plugins>
.....
<plugin>
<groupId>org.apache.openjpa</groupId>
<artifactId>openjpa-maven-plugin</artifactId>
<version>2.2.0</version>
<configuration>
<includes>**/domain/*.class</includes>
<addDefaultConstructor>true</addDefaultConstructor>
<enforcePropertyRestrictions>true</enforcePropertyRestrictions>
<persistenceXmlFile>${project.basedir}/src/main/resources/META-INF/persistence.xml</persistenceXmlFile>
</configuration>
<executions>
<execution>
<id>enhancer</id>
<phase>process-classes</phase>
<goals>
<goal>enhance</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
关于java - OpenJPA 和 Spring-boot 配置，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/40140463/