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我使用彈簧+ SpringDataJPA +具有以下xml配置休眠： JpaContext.xml：春數據JPA
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd">
<context:annotation-config />
<context:component-scan base-package="orgProfiles"/>
<jpa:repositories base-package="orgProfiles.repository" />
<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitName" value="punit"/>
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="true" />
</bean>
</property>
<property name="jpaPropertyMap">
<map>
<entry key="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect"/>
<entry key="hibernate.hbm2ddl.auto" value="update" />
<entry key="hibernate.format_sql" value="true" />
</map>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/orgprofiles?autoReconnect=true" />
<property name="username" value="root" />
<property name="password" value="" />
</bean>
</beans>
的persistence.xml：
<persistence xmlns="http://java.sun.com/xml/ns/persitence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="punit">
</persistence-unit>
</persistence>
我想用java註釋配置替換所有這些xml文件.Spring Data JPA註釋庫配置是這樣的：
http://docs.spring.io/spring-data/jpa/docs/current/reference/html/#jpa.java-config
但我沒有用Hibernate配置它。項目代碼在這裏：https://github.com/sudeepcv/basics-in-java-blogspot
我在這裏發現了一些有用的博客：http：//www.baeldung.com/2011/12/13/the-persistence-layer-with-spring-3- 1和jpa /＃javaconfig
但是我怎樣才能整合這個spring datajpa？
這裏是我的配置：
package com.app.config;
import java.util.Properties;
import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.JpaVendorAdapter;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.PlatformTransactionManager;
@ComponentScan("com.app")
public class PersistenceJPAConfig {
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setDataSource(dataSource());
em.setPackagesToScan(new String[] { "com.app.model" });
JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
em.setJpaVendorAdapter(vendorAdapter);
em.setJpaProperties(additionalProperties());
return em;
}
@Bean
public DataSource dataSource(){
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName("com.mysql.jdbc.Driver");
// dataSource.setUrl("jdbc:mysql://localhost:3306/spring_jpa");
dataSource.setUrl("jdbc:mysql://localhost:3306/users?autoReconnect=true");
dataSource.setUsername("root");
dataSource.setPassword("");
return dataSource;
}
@Bean
public PlatformTransactionManager transactionManager(EntityManagerFactory emf){
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(emf);
return transactionManager;
}
@Bean
public PersistenceExceptionTranslationPostProcessor exceptionTranslation(){
return new PersistenceExceptionTranslationPostProcessor();
}
Properties additionalProperties() {
Properties properties = new Properties();
// "create-drop"
properties.setProperty("hibernate.hbm2ddl.auto","create-drop");
properties.setProperty("hibernate.dialect", "org.hibernate.dialect.MySQL5Dialect");
return properties;
}
}
package com.app;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.app.config.PersistenceJPAConfig;
import com.app.model.Users;
import com.app.repository.UserRepository;
@Component
@Service
@Transactional
public class SpringConsoleapp {
@Autowired
private static UserRepository userRepository;
public static void main(String[] args) throws Exception{
// ApplicationContext ctx = new ClassPathXmlApplicationContext("jpaContext.xml", "applicationContext.xml");
// ApplicationContext ctx = new AnnotationConfigApplicationContext(HelloWorldConfig.class);
// ApplicationContext ctx = new AnnotationConfigApplicationContext(ApplicationConfig.class);
ApplicationContext ctx = new AnnotationConfigApplicationContext(PersistenceJPAConfig.class);
// HelloWorld helloWorld = ctx.getBean(HelloWorld.class);
//
// helloWorld.setMessage("Hello World!");
// helloWorld.getMessage();
Users userone=new Users();
// userone.setId(1l);
userone.setUname("unameabcc");
userone.setPassword("password");
// System.out.println("id"+userone.getId());
System.out.println("uname:"+userone.getUname());
System.out.println("password:"+userone.getPassword());
try {
userRepository.save(userone);
} catch (Exception e) {
// TODO Auto-generated catch block
System.out.println("something wrong:");
e.printStackTrace();
}
}
}
用戶模型：
package com.app.model;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name="users")
public class Users {
@Id
@GeneratedValue
private Long id;
private String uname;
private String password;
public Long getId() {
return id;
}
public String getPassword() {
return password;
}
public String getUname() {
return uname;
}
public void setId(Long id) {
this.id = id;
}
public void setPassword(String password) {
this.password = password;
}
public void setUname(String uname) {
this.uname = uname;
}
}
當我運行的主類;遇到此錯誤：
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Oct 28, 2014 3:01:47 PM org.hibernate.annotations.common.Version <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {4.0.1.Final}
Oct 28, 2014 3:01:47 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {4.1.9.Final}
Oct 28, 2014 3:01:47 PM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
Oct 28, 2014 3:01:47 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
Oct 28, 2014 3:01:47 PM org.hibernate.ejb.Ejb3Configuration configure
INFO: HHH000204: Processing PersistenceUnitInfo [
name: default
...]
Oct 28, 2014 3:01:47 PM org.hibernate.service.jdbc.connections.internal.ConnectionProviderInitiator instantiateExplicitConnectionProvider
INFO: HHH000130: Instantiating explicit connection provider: org.hibernate.ejb.connection.InjectedDataSourceConnectionProvider
Oct 28, 2014 3:01:48 PM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect
Oct 28, 2014 3:01:48 PM org.hibernate.engine.transaction.internal.TransactionFactoryInitiator initiateService
INFO: HHH000268: Transaction strategy: org.hibernate.engine.transaction.internal.jdbc.JdbcTransactionFactory
Oct 28, 2014 3:01:48 PM org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory <init>
INFO: HHH000397: Using ASTQueryTranslatorFactory
Oct 28, 2014 3:01:48 PM org.hibernate.tool.hbm2ddl.SchemaExport execute
INFO: HHH000227: Running hbm2ddl schema export
Oct 28, 2014 3:01:48 PM org.hibernate.tool.hbm2ddl.SchemaExport execute
INFO: HHH000230: Schema export complete
uname:unameabccjava.lang.NullPointerException
password:password
something wrong:
at com.app.SpringConsoleapp.main(SpringConsoleapp.java:54)