Spring Data JPA(openjpa) 报错：has not been?报错
直接使用openjpa没有问题
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
version="2.0">
<persistence-unit name="myjpa" transaction-type="RESOURCE_LOCAL">
<provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider>
<class>com.pp.jpa.openjpa.User</class>
<properties>
<property name="openjpa.ConnectionURL" value="jdbc:mysql:///jpa"/>
<property name="openjpa.ConnectionDriverName" value="com.mysql.jdbc.Driver"/>
<property name="openjpa.ConnectionUserName" value="root"/>
<property name="openjpa.ConnectionPassword" value="admin123"/>
</properties>
</persistence-unit>
</persistence>
<dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.40</version> </dependency> <dependency> <groupId>org.apache.openjpa</groupId> <artifactId>openjpa-all</artifactId> <version>2.4.1</version> </dependency>
<dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-jpa</artifactId> <version>1.10.4.RELEASE</version> </dependency> <dependency> <groupId>org.apache.openjpa</groupId> <artifactId>openjpa-all</artifactId> <version>2.4.1</version> </dependency>
package com.pp.jpa.spring.openjpa;
import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.OpenJpaVendorAdapter;
import org.springframework.transaction.PlatformTransactionManager;
import com.mysql.jdbc.jdbc2.optional.MysqlDataSource;
@Configuration
public class JpaConfig {
@Bean
public DataSource createDataSource() {
MysqlDataSource ds = new MysqlDataSource();
ds.setURL("jdbc:mysql:///jpa");
ds.setUser("root");
ds.setPassword("admin123");
return ds;
}
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource) {
OpenJpaVendorAdapter vendorAdapter = new OpenJpaVendorAdapter();
vendorAdapter.setShowSql(true);
LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
factory.setJpaVendorAdapter(vendorAdapter);
factory.setPackagesToScan("com.pp.jpa.spring.openjpa");
factory.setDataSource(dataSource);
return factory;
}
@Bean
public PlatformTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
JpaTransactionManager txManager = new JpaTransactionManager();
txManager.setEntityManagerFactory(entityManagerFactory);
return txManager;
}
}
package com.pp.jpa.spring.openjpa;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name="user2")
public class User {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private Integer uid;
@Column
private String name;
public Integer getUid() {
return uid;
}
public void setUid(Integer uid) {
this.uid = uid;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String toString() {
return "User [uid=" + uid + ", name=" + name + "]";
}
public User(String name) {
this.name = name;
}
public User(){}
}
<p>
<br>
</p>
<p>
<br>
</p>
package com.pp.jpa.spring.openjpa;
import org.springframework.data.repository.CrudRepository;
public interface UserRepository extends CrudRepository<User, Integer> {
}
package com.pp.jpa.spring.openjpa;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.transaction.annotation.EnableTransactionManagement;
@EnableTransactionManagement
@EnableJpaRepositories
@ComponentScan
public class App {
public static void main( String[] args ) {
AnnotationConfigApplicationContext context = null;
context = new AnnotationConfigApplicationContext(App.class);
System.out.println(context.getBean(UserRepository.class));
context.close();
}
}
运行后，直接报错：
Caused by: <openjpa-2.4.1-r422266:1730418 fatal user error> org.apache.openjpa.util.MetaDataException: The type "class com.pp.jpa.spring.openjpa.User" has not been enhanced. at org.apache.openjpa.meta.ClassMetaData.resolveMeta(ClassMetaData.java:1834) at org.apache.openjpa.meta.ClassMetaData.resolve(ClassMetaData.java:1808) at org.apache.openjpa.meta.MetaDataRepository.processBuffer(MetaDataRepository.java:829) at org.apache.openjpa.meta.MetaDataRepository.resolveMeta(MetaDataRepository.java:726) at org.apache.openjpa.meta.MetaDataRepository.resolve(MetaDataRepository.java:650) at org.apache.openjpa.meta.MetaDataRepository.getMetaDataInternal(MetaDataRepository.java:418) at org.apache.openjpa.meta.MetaDataRepository.getMetaData(MetaDataRepository.java:389) at org.apache.openjpa.persistence.meta.MetamodelImpl.<init>(MetamodelImpl.java:86) at org.apache.openjpa.persistence.EntityManagerFactoryImpl.getMetamodel(EntityManagerFactoryImpl.java:348) at org.apache.openjpa.persistence.EntityManagerFactoryImpl.getMetamodel(EntityManagerFactoryImpl.java:59) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.invokeProxyMethod(AbstractEntityManagerFactoryBean.java:407) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean$ManagedEntityManagerFactoryInvocationHandler.invoke(AbstractEntityManagerFactoryBean.java:560) at com.sun.proxy.$Proxy15.getMetamodel(Unknown Source) at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.getMetamodels(JpaMetamodelMappingContextFactoryBean.java:90) at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:56) at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:26) at org.springframework.beans.factory.config.AbstractFactoryBean.afterPropertiesSet(AbstractFactoryBean.java:134) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1641) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1578) ... 11 more网上说，openjpa要配置运行时增强，但是，我直接用openjpa的时候，为啥不报错。
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https://developer.aliyun.com/profile/5yerqm5bn5yqg?spm=a2c6h.12873639.0.0.6eae304abcjaIB
TheChangeRoutineConsumedPKclasswasnotaddedtothepersistence.xmlandihadturnedoffautomaticclassscanning.
Addingtheclasstothepersistence.xmlfixedtheproblem
< persistence - unit ...> ... < class > au . com . combined . domain . changeroutine . ChangeRoutineConsumedPK </ class > ... </ persistence - unit >
要么开启自动扫描，要么扫描范围主动加入这个bean
参阅：
http://stackoverflow.com/questions/19042416/the-type-class-has-not-been-enhanced-jpa-exception
引用来自“jspp”的评论
TheChangeRoutineConsumedPKclasswasnotaddedtothepersistence.xmlandihadturnedoffautomaticclassscanning.
Addingtheclasstothepersistence.xmlfixedtheproblem
< persistence - unit ...> ... < class > au . com . combined . domain . changeroutine . ChangeRoutineConsumedPK </ class > ... </ persistence - unit >
要么开启自动扫描，要么扫描范围主动加入这个bean
参阅：
http://stackoverflow.com/questions/19042416/the-type-class-has-not-been-enhanced-jpa-exception
2020-06-08 21:13:18赞同 展开评论
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