我正在转换基于JdbcTemplate的项目以使用Spring Data。我得到了＃34;而不是托管类型：...＆＃34;其他人描述的错误。这通常表明Spring Data没有找到实体类。但是，我认为我已经正确设置了，并且我不确定乳清是否会收到此错误。
我的基本数据配置是
package spittr.config;
import javax.inject.Inject;
import javax.sql.DataSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.core.JdbcOperations;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.context.annotation.Import;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.orm.jpa.vendor.Database;
import org.springframework.orm.jpa.JpaVendorAdapter;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor;
import org.springframework.context.annotation.ComponentScan;
import javax.persistence.EntityManagerFactory;
@Configuration
@Import(DataSourceConfig.class)
@EnableJpaRepositories("spittr.data")
public class DataConfig {
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource, JpaVendorAdapter jpaVendorAdapter) {
LocalContainerEntityManagerFactoryBean emf = new LocalContainerEntityManagerFactoryBean();
emf.setDataSource(dataSource);
emf.setPersistenceUnitName("spittr");
emf.setJpaVendorAdapter(jpaVendorAdapter);
emf.setPackagesToScan("spittr");
return emf;
}
@Bean
public JpaVendorAdapter jpaVendorAdapter() {
HibernateJpaVendorAdapter adapter = new HibernateJpaVendorAdapter();
adapter.setDatabase(Database.MYSQL);
adapter.setShowSql(true);
adapter.setGenerateDdl(false);
adapter.setDatabasePlatform("org.hibernate.dialect.MySQLDialect");
return adapter;
}
@Configuration
@EnableTransactionManagement
public static class TransactionConfig {
@Inject
private EntityManagerFactory emf;
@Bean
public PlatformTransactionManager transactionManager() {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(emf);
return transactionManager;
}
}
@Bean
public PersistenceExceptionTranslationPostProcessor exceptionTranslation(){
return new PersistenceExceptionTranslationPostProcessor();
}
@Bean
public JdbcOperations jdbcTemplate(DataSource dataSource) {
return new JdbcTemplate(dataSource);
}
}
Spitter实体类位于包spittr：
中package spittr;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;
import org.hibernate.validator.constraints.Email;
import org.hibernate.validator.constraints.ScriptAssert;
@ScriptAssert(
lang = "javascript",
script = "_this.confirmPassword != null && _this.confirmPassword.equals(_this.password)",
message = "spitter.password.mismatch.message")
public class Spitter {
private Long id;
@NotNull
@Size(min=5, max=16, message="{username.size}")
private String username;
@NotNull
@Size(min=5, max=25, message="{password.size}")
private String password;
private String confirmPassword;
@NotNull
@Size(min=2, max=30, message="{firstName.size}")
private String firstName;
@NotNull
@Size(min=2, max=30, message="{lastName.size}")
private String lastName;
@NotNull
@Email
private String email;
public Spitter() {}
public Spitter(String username, String password, String confirmPassword, String firstName, String lastName, String email) {
this(null, username, password, confirmPassword, firstName, lastName, email);
}
public Spitter(Long id, String username, String password, String confirmPassword, String firstName, String lastName, String email) {
this.id = id;
this.username = username;
this.password = password;
this.firstName = firstName;
this.lastName = lastName;
this.email = email;
}
// setters/getters...
}
SpitterDao位于spittr.data包中：
package spittr.data;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Modifying;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.query.Param;
import spittr.Spitter;
public interface SpitterDao extends JpaRepository<Spitter, Long> {
public Spitter findByUsername(String username);
@Modifying
@Query("UPDATE Spitter s SET s.password = :pwd WHERE s.username = :uname")
public void saveSpitterPassword(@Param("pwd") String password,
@Param("uname") String username);
}
我也有一个单独的服务层，但我不认为这会导致问题。我的服务层由以下两个文件定义：
package spittr.data;
// Interface for SpitterServiceImpl, The Service layer
// implemented in SpitterServiceImpl.java
import spittr.Spitter;
public interface SpitterService {
public Spitter save(Spitter spitter);
public Spitter createSpitter(Spitter spitter);
public Spitter findByUsername(String username);
}
和
package spittr.data;
import spittr.Spitter;
import javax.inject.Inject;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
@Service
@Transactional(readOnly = true)
public class SpitterServiceImpl implements SpitterService {
@Inject SpitterDao spitterDao;
@Override
@Transactional(readOnly = false)
public Spitter save(Spitter spitter) {
return spitterDao.save(spitter);
}
@Override
@Transactional(readOnly = false)
public Spitter createSpitter(Spitter spitter) {
Spitter savedSpitter = spitterDao.save(spitter);
spitterDao.saveSpitterPassword(savedSpitter.getPassword(), savedSpitter.getUsername());
return savedSpitter;
}
@Override
public Spitter findByUsername(String username) {
return spitterDao.findByUsername(username);
}
}
我得到的实际例外是
SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'spitterServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: spittr.data.SpitterDao spittr.data.SpitterServiceImpl.spitterDao; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'spitterDao': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalArgumentException: Not an managed type: class spittr.Spitter
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:293)
....
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: spittr.data.SpitterDao spittr.data.SpitterServiceImpl.spitterDao; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'spitterDao': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalArgumentException: Not an managed type: class spittr.Spitter
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:509)
...
Caused by: java.lang.IllegalArgumentException: Not an managed type: class spittr.Spitter
at org.hibernate.ejb.metamodel.MetamodelImpl.managedType(MetamodelImpl.java:169)
...
答案 0 :(得分：0)
您忘记使用@Entity注释Spitter类。您想要使用JPA / Hibernate保留的每个Type / Class都必须使用此注释进行保护。
所以Exception说：
PS。你必须使用@Id注释id字段，并且可能使用某种类型@@GeneratedValue
@Entity
public class Spitter {
@Id
private Long id;
...
}