Question

我在MySQL中有一个简单的表，我希望通过JPA将数据保存在其中，但是我得到一个错误描述如下，这里有什么问题？

应用程序托管在GlassFish 4中，使用MySQL 5和EJB 请考虑下表的定义

CREATE TABLE  `myproject`.`detected_issues` (
 `sdate` datetime NOT NULL default '0000-00-00 00:00:00',
 `pxvalue` double NOT NULL default '0',
 `generation` varchar(6) NOT NULL ,
 `schema` varchar(30) NOT NULL ,
 `node` varchar(100) NOT NULL,
 `parent` varchar(100) NOT NULL ,
 `layer` varchar(30) NOT NULL ,
 `interval` varchar(5) NOT NULL ,
 `id` int(10) unsigned NOT NULL auto_increment ,
  PRIMARY KEY  (`id`),
 UNIQUE KEY `detected_issues_UIDX`    (`sdate`,`node`,`generation`,`schema`,`layer`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

这是实体类

@Entity
@Table(name="detected_issues")
@NamedQuery(name="DetectedIssue.findAll", query="SELECT d FROM DetectedIssue d")
public class DetectedIssue implements Serializable {
private static final long serialVersionUID = 1L;

@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private int id;

private String generation;

private String interval;

private String layer;

private String node;

private String parent;

private double pxvalue;

private String schema;

@Temporal(TemporalType.TIMESTAMP)
private Date sdate;

public DetectedIssue() {
}
}

使用以下代码我得到下面描述的错误

 @PersistenceContext(unitName = "ADProjectEJB")
    private EntityManager em;
DetectedIssue issuet = new DetectedIssue();
    issuet.setNode("Node");
    issuet.setParent("Parent");
    issuet.setPxvalue(0.5d);
    issuet.setGeneration("Gen");
    issuet.setSchema("HU");
    issuet.setLayer("Layer");
    issuet.setInterval("AH");
    issuet.setSdate(Calendar.getInstance().getTime());      
    System.out.println(issuet.toString());
    em.persist(issuet);
    em.flush();

错误

引起：异常[EclipseLink-4002]（Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd）：org.eclipse.persistence.exceptions.DatabaseException内部例外：com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException：您的SQL语法有错误;检查手册对应于您的MySQL服务器版本，以便使用正确的语法靠近＆nbsp; INTERVAL，LAYER，NODE，PARENT，PXVALUE，SCHEMA，SDATE）价值观（＆＃39; Gen＆＃39;，＆＃39; AH＆＃39;，＆＃39; Lay＆＃39; at line 1错误代码：1064电话：INSERT INTO detected_issues（GENERATION，INTERVAL，LAYER，NODE，PARENT，PXVALUE， SCHEMA，SDATE）VALUES（？，？，？，？，？，？，？，？）bind =＆gt; [8个参数约束

数据中的JPA错误持续存在

0 个答案: