spring + jpa

最新推荐文章于 2022-06-09 14:57:01 发布

原创最新推荐文章于 2022-06-09 14:57:01 发布 · 299 阅读

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#spring #jpa #integer #class #bean #encoding

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applicationContext.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans "
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance "
xmlns:p="http://www.springframework.org/schema/p "
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd " xmlns:tx="http://www.springframework.org/schema/tx ">
    <bean
        class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />

<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
         <property name="persistenceUnitName" value="people"/>
   </bean>

    <bean id="transactionManager"
        class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory" />
    </bean>

    <tx:annotation-driven transaction-manager="transactionManager" />
<bean id="cmservice" class="com..cms.service.CmsServiceImpl" />
</beans>

persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" 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 ">
<persistence-unit name="people">
  <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <properties>
             <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect" />

            <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
            <property name="hibernate.connection.username" value="root" />
            <property name="hibernate.connection.password" value="root" />
            <property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/testjpa" />
            <property name="hibernate.max_fetch_depth" value="5" />
            <property name="hibernate.jdbc.fetch_size" value="20" />
            <property name="hibernate.jdbc.batch_size" value="10" />

            <property name="hibernate.hbm2ddl.auto" value="update" />
            <property name="hibernate.show_sql" value="true" />
            <property name="hibernate.format_sql" value="false" />
        </properties>
</persistence-unit>
</persistence>

对象：

package com.cms.domain;

import java.io.Serializable;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name = "person")
public class Person implements Serializable{

@Id
@GeneratedValue
private Integer id;
@Column(name = "NAME")
private String name;

public Person() {
  // TODO Auto-generated constructor stub
}

public Person(Integer id) {
  this.id = id;
}

public Integer getId() {
  return id;
}

public void setId(Integer id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

}

Service：

public interface ICmsService {

public void save(Person o);

}

@Transactional
public class CmsServiceImpl implements ICmsService {
private EntityManager em;
@PersistenceContext
public void setEntityManager(EntityManager em){
         this.em = em;
}

public void save(Person entity) {
  Assert.notNull(entity);
  em.persist(entity);
  return entity;
}

}