我的应用程序抛出此异常。 我使用的Java DB作为后端,我使用JPAjava.sql.SQLException:Schema'ADMIN'中已存在表/视图'SEQUENCE'
内部异常: 值java.sql.SQLException:表/视图 “零花钱”已经存在于架构 “应用”。错误代码:30000电话:CREATE TABLE APP.POCKETMONEY(ID INTEGER NOT NULL,DateofSpending日期,说明 VARCHAR(255),AMOUNT INTEGER,PRIMARY KEY (ID))查询:DataModifyQuery()
内部异常: java.sql.SQLException:表/视图 'SEQUENCE'已经存在于Schema 'ADMIN'中。错误代码:30000电话: CREATE TABLE SEQUENCE(SEQ_NAME VARCHAR(50)NOT NULL,SEQ_COUNT 十进制,PRIMARY KEY(SEQ_NAME)) 查询:DataModifyQuery()
这里是我的JPA代码
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package mymoney;
import java.io.Serializable;
import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
/**
*
* @author sugan
*/
@Entity
@Table(schema = "APP")
public class pocketMoney implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy=GenerationType.TABLE)
private int id;
@Temporal(TemporalType.DATE)
@Column(name = "DateofSpending")
private Date dos;
private String description;
private int amount;
public int getAmount() {
return amount;
}
public void setAmount(int amount) {
this.amount = amount;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public Date getDos() {
return dos;
}
public void setDos(Date dos) {
this.dos = dos;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
@Override
public int hashCode() {
int hash = 0;
hash += (int) id;
return hash;
}
@Override
public boolean equals(Object object) {
// TODO: Warning - this method won't work in the case the id fields are not set
if (!(object instanceof pocketMoney)) {
return false;
}
pocketMoney other = (pocketMoney) object;
if (this.id != other.id) {
return false;
}
return true;
}
@Override
public String toString() {
return "mymoney.pocketMoney[id=" + id + "]";
}
}
的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="myMoneyPU" transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<class>mymoney.pocketMoney</class>
<properties>
<property name="eclipselink.jdbc.password" value="adminadmin"/>
<property name="eclipselink.jdbc.user" value="admin"/>
<property name="eclipselink.jdbc.driver" value="org.apache.derby.jdbc.EmbeddedDriver"/>
<property name="eclipselink.jdbc.url" value="jdbc:derby:pocketmoney;create=true"/>
<property name="eclipselink.ddl-generation" value="drop-and-create-tables"/>
</properties>
</persistence-unit>
</persistence>
在没有看到代码,这会导致错误(如果你在消息IIRC仔细一看,他们会被记录为警告),我只能翻译错误信息。看起来你的代码正在试图创建已经存在于你的数据库中的表...... – 2010-09-01 08:38:18