我想将一些hibernate配置放在属性文件中,以使其在没有构建和部署的情况下可编辑.
我尝试通过遵循Create JPA EntityManager中没有persistence.xml配置文件的指示来解决我的问题
app.properties:
hibernate.show_sql=true
hibernate.dialect=org.hibernate.dialect.MySQLDialect
hibernate.hbm2ddl.auto=validate
hibernate.show_sql=true
hibernate.format_sql=true
hibernate.default_schema=myschema
persistence.xml中
<?xml version="1.0" encoding="UTF-8"?>
<!-- Persistence deployment descriptor for dev profile -->
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
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/persistence_1_0.xsd"
version="1.0">
<persistence-unit name="pu">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>jdbc/appDatasource</jta-data-source>
<properties>
<property name="jboss.entity.manager.factory.jndi.name" value="java:/appEntityManagerFactory"/>
</properties>
</persistence-unit>
</persistence>
在初始化代码中,应用程序执行以下序列(找到属性),
Properties props = new Properties();
InputStream is = ClassLoader.getSystemResourceAsStream( "app.properties" );
props.load( is );
Persistence.createEntityManagerFactory( "pu", props );
但失败并显示错误消息:
INFO [SessionFactoryImpl] building session factory
INFO [SessionFactoryObjectFactory] Not binding factory to JNDI, no JNDI name configured
ERROR [STDERR] …在Spring Boot应用程序中,我正在尝试设置多个数据库连接.我已经开始构建主数据源,但是我在mySqlEntityManagerFactory方法上遇到以下错误.
无法自动装配.没有EntityManagerFactoryBuilder的bean
import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.transaction.annotation.Transactional;
import javax.persistence.PersistenceContext;
import javax.sql.DataSource;
import java.util.HashMap;
import java.util.Map;
@Configuration
@Transactional
@EnableTransactionManagement
@EnableJpaRepositories(
basePackages = "digital.sheppard.dao",
entityManagerFactoryRef = "entityManager",
transactionManagerRef = "transactionManager")
public class PrimaryDBConfig {
@Bean(name="dataSource")
@Primary
@ConfigurationProperties(prefix = "primary.datasource.mysql")
public DataSource mysqlDataSource() {
return DataSourceBuilder.create().build();
}
@PersistenceContext(unitName = "primary")
@Primary
@Bean(name = "entityManager")
public LocalContainerEntityManagerFactoryBean mySqlEntityManagerFactory(EntityManagerFactoryBuilder builder) {
return builder.dataSource(mysqlDataSource()).persistenceUnit("primary").properties(jpaProperties())
.packages("digital.sheppard.model").build();
}
private Map<String, Object> jpaProperties() …这个问题是专门关于编程创建JPA EntityManagerFactory由Hibernate支持5,这意味着无需配置XML文件并没有使用Spring.此外,这个问题具体是关于EntityManagerFactory 使用Hibernate Interceptor创建一个.
我知道如何以SessionFactory我想要的方式创建Hibernate ,但我不想要Hibernate SessionFactory,我想要一个EntityManagerFactory由Hibernate支持的JPA SessionFactory.鉴于EntityManagerFactory有一种方法可以获得底层证券SessionFactory,但如果你拥有的是一个SessionFactory并且所有你想要的东西都是EntityManagerFactory它的包装,看起来你运气不好.
Hibernate版本4.2.2 Ejb3Configuration已被弃用,但似乎没有其他方式以编程方式创建EntityManagerFactory,所以我做了这样的事情:
@SuppressWarnings( "deprecation" )
EntityManagerFactory buildEntityManagerFactory(
UnmodifiableMap<String,String> properties,
UnmodifiableCollection<Class<?>> annotatedClasses,
Interceptor interceptor )
{
Ejb3Configuration cfg = new Ejb3Configuration();
for( Binding<String,String> binding : properties )
cfg.setProperty( binding.key, binding.value );
for( Class<?> annotatedClass : annotatedClasses )
cfg.addAnnotatedClass( annotatedClass );
cfg.setInterceptor( interceptor ); …我正在尝试以编程方式创建实体工厂管理器而不使用持久性文件
EntityManagerFactory emf;
Map<String, String> properties = new HashMap<String, String>();
properties.put("hibernate.connection.driver_class", "com.mysql.jdbc.Driver");
properties.put("hibernate.connection.url", "jdbc:mysql://173.194.25***************");
properties.put("hibernate.connection.username", "etech****");
properties.put("hibernate.connection.password", "A*****");
properties.put("hibernate.dialect", "org.hibernate.dialect.MySQLDialect");
properties.put("hibernate.show-sql", "true");
properties.put("provider", "org.hibernate.ejb.HibernatePersistence");
emf = Persistence.createEntityManagerFactory(idClient, properties);
在线
emf = Persistence.createEntityManagerFactory(idClient, properties);
我收到错误:
org.springframework.beans.factory.BeanCreationException:创建名为'com****RepositoryFieldsFieldWorkerRepositoryImpl'的bean时出错:init方法的调用失败; 嵌套异常是javax.persistence.PersistenceException:没有名为idClient的EntityManager的持久性提供程序
我该如何解决这个问题？
任何帮助将不胜感激
普通的旧式 Java 应用程序，没有附加 Web 服务器（甚至没有JBoss），正在使用 JPA 来查询数据库。
JDBC 密码暴露在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">
<persistence-unit name="PU" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name="javax.persistence.jdbc.url" value="jdbc:postgresql:DATABASE"/>
<property name="javax.persistence.jdbc.user" value="USERNAME"/>
<property name="javax.persistence.jdbc.driver" value="org.postgresql.Driver"/>
<property name="javax.persistence.jdbc.password" value="PASSWORD"/>
<property name="hibernate.cache.provider_class" value="org.hibernate.cache.NoCacheProvider"/>
<property name="hibernate.hbm2ddl.auto" value="validate"/>
</properties>
</persistence-unit>
</persistence>
可以实例化JNDI 子上下文以在应用程序的方法中设置密码main。这可能允许使用 JTA 数据源：
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
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/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="PU" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>java:/DefaultDS</jta-data-source>
<properties>
<property name="hibernate.hbm2ddl.auto" value="create-drop"/>
</properties>
</persistence-unit>
</persistence>
如何将密码外部化，使其不再存在于内部persistence.xml …