小编Vad*_*dim的帖子

我需要为新工作执行测试任务,但似乎我陷入了昏迷状态.我在持久化上下文方面遇到了一些问题.我使用Glassfish 3和本教程:http://uaihebert.com/？p = 834

已在服务器上配置jdbc/CrudDS,ping成功.部署应用程序时,我只在"引擎"列中看到了ejb,web,但没有看到JPA引擎.

这是Entity bean:

@Entity
@Table(name = "tasks")
public class Task implements Serializable {

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

@Column(name="title")
private String title;

@Column(name="mail")
private String mail;

@Column(name="text")
private String text;

@Column(name="time")
private Date time;

@Column(name="interval")
private int interval;

@Column(name="repeats")
private int repeats;

public int getId() {
    return id;
}

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

public String getTitle() {
    return title;
}

public void setTitle(String title) {
    this.title = title; …