spring3.0注解映射数据库表问题

Question

本人通过class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"><property name="annotatedClasses">
<list>
<value>com.erayt.po.EmployeePO</value>
生成对应表产生的结果却是 时有时无

Answer 1

这个是我的Spring配置，，希望对你有帮助
<?xml version="1.0" encoding="GBK"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context-3.0.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<context:component-scan base-package="edu.jmu" />
<!--  c3p0
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="org.gjt.mm.mysql.Driver" />
<property name="jdbcUrl"
value="jdbc:mysql://localhost:3306/test?useUnicode=true&amp;characterEncoding=UTF-8" />
<property name="user" value="root" />
<property name="password" value="123456" />
<property name="initialPoolSize" value="1" />
<property name="minPoolSize" value="1" />
<property name="maxPoolSize" value="300" />
<property name="maxIdleTime" value="60" />
<property name="acquireIncrement" value="5" />
<property name="idleConnectionTestPeriod" value="60" />
</bean>
-->

<bean id="entityManagerFactory" destroy-method="destroy"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<!-- <property name="dataSource" ref="dataSource" /> --> 
<property name="persistenceUnitName" value="neal" />
<property name="loadTimeWeaver">
<bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver"/>
</property>
</bean>

<bean id="txManager" class="org.springframework.orm.jpa.JpaTransactionManager">
   <property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
<tx:annotation-driven transaction-manager="txManager" />
</beans>用的是 JPA2.0 
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
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_2_0.xsd"> <persistence-unit name="neal" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect"/>
         <property name="hibernate.connection.driver_class" value="org.gjt.mm.mysql.Driver"/>
        <property name="hibernate.connection.username" value="root"/>
        <property name="hibernate.connection.password" value="123456"/>
        <property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/oa?useUnicode=true&amp;characterEncoding=UTF-8"/>
                
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect" />
<property name="hibernate.max_fetch_depth" value="3" />
<!-- 
<property name="hibernate.hbm2ddl.auto" value="update" />
-->
<property name="hibernate.jdbc.fetch_size" value="3" />
<!-- <property name="hibernate.jdbc.batch_size" value="10" /> -->
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="false" />

</properties> </persistence-unit>
</persistence>

Answer 2

我用的是扫描目录的方式没问题:
<property name="packagesToScan">
<list>
<value>com.leadtone.gegw.aoi.gateway.entity</value>
</list>
</property>
时有时无什么意思? 有没有报错?
你的com.erayt.po.EmployeePO类内容是什么?

Answer 3

package com.erayt.po;import java.io.Serializable;import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;import org.hibernate.annotations.GenericGenerator;
@Entity
@Table(name = "EMPLOYEE_INFO")
@SuppressWarnings("serial")
public class EmployeePO implements Serializable {


@Id
@GeneratedValue(generator = "system-uuid")
@GenericGenerator(name = "system-uuid", strategy = "uuid")
@Column(name = "UUID", length = 32)
private String id;

/**
 * 柜员号
 */
@Column(name = "_CODE", length = 50)
private String code;

/**
 * 柜员姓名
 */
@Column(name = "_NAME", length = 50)
private String name;

/**
 * 密码
 */
@Column(name = "_PASSWORD", length = 16)
private String password;

/**
 * 所属机构
 */
@ManyToOne(cascade={CascadeType.PERSIST, CascadeType.MERGE}, fetch=FetchType.LAZY)
@JoinColumn(name = "ORG_ID")
private InstitutionPO org;

/**
 * 启用状态（0：启用、1：未启用）
 */
@Column(name = "_STATUS")
private int status = 0;

/**
 * 有效期限
 */
@Column(name = "VALID_DATE", length = 50)
private String validDate;

/**
 * 是否删除
 */
@Column(name = "IS_DELETED")
private boolean isDeleted = false;就是一个普通的Entity

Answer 4

在com.erayt.po 下都是实体类问题就是该包下的类有些生成了对应的表 有些是未生成然而这些类注解都几乎是一样的

Answer 5

问题解决了 原来是我的@Column(name = "_STATUS") 
改为@Column(name = "STATUS")就可以了