Spring数据JPA配置 [英] Spring data JPA configuration
本文介绍了Spring数据JPA配置的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我最近正在使用 Spring Data JPA 开发一个 Spring Web 应用程序
I'm working on a spring web application using Spring Data JPA lately
我遇到了persistanceConfiguration的问题
I'm having problems with the persistanceConfiguration
@Configuration
@EnableTransactionManagement
@PropertySource({ "/resources/hibernate.properties" })
@EnableJpaRepositories(basePackages = "com.servmed.repositories")
public class PersistenceConfig {
@Autowired
private Environment env;
Properties jpaProperties() {
return new Properties() {
{
setProperty("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
setProperty("hibernate.dialect", env.getProperty("hibernate.dialect")); //allows Hibernate to generate SQL optimized for a particular relational database.
setProperty("hibernate.show_sql",env.getProperty("hibernate.show_sql"));
}
};
}
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory()
{
HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
vendorAdapter.setGenerateDdl(true);
vendorAdapter.setShowSql(true);
LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
factory.setDataSource(dataSource());
factory.setJpaVendorAdapter(vendorAdapter);
factory.setJpaProperties(jpaProperties());
factory.setPackagesToScan("com.servmed.models");
factory.setLoadTimeWeaver(new InstrumentationLoadTimeWeaver());
return factory;
}
@Bean
public PlatformTransactionManager transactionManager()
{
EntityManagerFactory factory = entityManagerFactory().getObject();
return new JpaTransactionManager(factory);
}
@Bean
public HibernateExceptionTranslator hibernateExceptionTranslator(){
return new HibernateExceptionTranslator();
}
@Bean
public DataSource dataSource() {
BasicDataSource dataSource = new BasicDataSource();
dataSource.setDriverClassName(env.getProperty("jdbc.driverClassName"));
dataSource.setUrl(env.getProperty("jdbc.url"));
dataSource.setUsername(env.getProperty("jdbc.user"));
dataSource.setPassword(env.getProperty("jdbc.pass"));
return dataSource;
}
}
这是我的 pom.xml
And here's my pom.xml
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<!--Spring dependencies-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-dao</artifactId>
<version>2.0.8</version>
</dependency>
<!-- spring security-->
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-web</artifactId>
<version>${spring-security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-core</artifactId>
<version>${spring-security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
<version>${spring-security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-taglibs</artifactId>
<version>${spring-security.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${aspectj.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${aspectj.version}</version>
</dependency>
<!-- Spring Data JPA dependencies -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.6.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>${hibernate.version}</version>
</dependency>
<!--com.mysema.querydsl dependencies-->
<dependency>
<groupId>com.mysema.querydsl</groupId>
<artifactId>querydsl-sql</artifactId>
<version>${com.mysema.querydsl.version}</version>
</dependency>
<dependency>
<groupId>com.mysema.querydsl</groupId>
<artifactId>querydsl-jpa</artifactId>
<version>${com.mysema.querydsl.version}</version>
</dependency>
<dependency>
<groupId>com.mysema.querydsl</groupId>
<artifactId>querydsl-core</artifactId>
<version>${com.mysema.querydsl.version}</version>
</dependency>
<!--Hibernate dependencies-->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>${hibernate.version}</version>
</dependency>
<!--db-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.23</version>
</dependency>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<!--connection pool-->
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-dbcp</artifactId>
<version>8.0.9</version>
</dependency>
<!--thymeleaf and servlet api-->
<dependency>
<groupId>org.thymeleaf</groupId>
<artifactId>thymeleaf-spring4</artifactId>
<version>2.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
</dependencies>
<build>
<finalName>${project.artifactId}</finalName>
</build>
它似乎对我不起作用，我收到此错误:
It doesn't seem to work for me, i get this error:
Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public org.springframework.transaction.interceptor.BeanFactoryTransactionAttributeSourceAdvisor org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration.transactionAdvisor()] threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionInterceptor' defined in class path resource [org/springframework/transaction/annotation/ProxyTransactionManagementConfiguration.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Property 'transactionManager' is required
知道为什么吗?
编辑
entityManagerFactory 方法似乎没有正确创建 transactionManager 中使用的 bean，我在 hibernate 中遇到了同样的问题(sessionFactory bean 未创建，不能在 transactionManager 方法中使用)
it doesn't seem that the entityManagerFactory method is creating properly the bean used in transactionManager, i had the same problem with hibernate (sessionFactory bean is not created, and cannot be used in transactionManager method )
编辑 2
我摆脱了这个问题(这是因为属性文件错误)但现在我又犯了另一个错误:
I got rid of this problem(it was because of a wrong properties file) but now i gey another error :
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [com/servmed/configuration/PersistenceConfig.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory
推荐答案
以下是我定义事务管理器的方式:
Here is how I defined my transaction manager:
@Bean
public Object transactionManager() {
return new org.springframework.orm.jpa.JpaTransactionManager();
}
而不是调用 entityFactory 方法，您或许应该注入它:这将避免 entityManagerFactory 中的依赖注入错误.
And instead of calling the entityFactory method, you should perhaps inject it: this would avoid dependency injection errors in entityManagerFactory.
@Bean
public PlatformTransactionManager transactionManager(EntityManagerFactory factory)
{
return new JpaTransactionManager(factory);
}
编辑
除了persistence.xml、afterPropertiesSet()和setLoadTimeWeaver的调用，我们有相同的代码.
Apart from persistence.xml, the call of afterPropertiesSet() and the setLoadTimeWeaver, we have the same code.
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory()
{
HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
vendorAdapter.setGenerateDdl(true);
vendorAdapter.setShowSql(true);
Properties jpaProperties = new Properties();
jpaProperties.put("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
jpaProperties.put("hibernate.dialect" , env.getProperty("hibernate.dialect"));
jpaProperties.put("hibernate.show_sql" , pgadenv.getProperty("hibernate.show_sql"));
LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
factory.setDataSource(dataSource());
factory.setJpaVendorAdapter(vendorAdapter);
factory.setJpaProperties(jpaProperties);
factory.setPackagesToScan("com.servmed.models");
// factory.afterPropertiesSet(); <-- why ?
// does it work without Weaving ?
factory.setLoadTimeWeaver(new InstrumentationLoadTimeWeaver());
return factory;
}
编辑 (2)
我没有时间回答你，这是一个示例persistence.xml:
I did not have time to answer you, here is a sample persistence.xml:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1"
xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence
http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
<!-- transaction-type="JTA" -->
<persistence-unit name="persistenceUnit" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<!-- Your probably won't need it. -->
<!-- <class>com.servmed.models.YourClass</class> -->
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<shared-cache-mode>ENABLE_SELECTIVE</shared-cache-mode>
<properties>
<property name="javax.persistence.schema-generation.database.action" value="none" />
<property name="javax.persistence.schema-generation.scripts.action" value="none" />
<!-- <property name="javax.persistence.schema-generation.scripts.create-target" value="" /> -->
<!-- <property name="javax.persistence.schema-generation.scripts.drop-target" value=""/> -->
</properties>
</persistence-unit>
</persistence>
你可能不需要列出你的类(就像在评论的例子中一样)，否则列出它们.
You probably won't need to list your classes (like in the commented example), otherwise list them.
并在Spring配置中添加:
And in the Spring configuration, add:
factory.setPersistenceXmlLocation("classpath:META-INF/persistence.xml");
factory.setPersistenceUnitName("persistenceUnit");
然而，我开始认为这可能是一个完全不相关的问题.
However, I'm beginning to think it might be a completely unrelated problem.
这篇关于Spring数据JPA配置的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
