小编Hat*_*lem的帖子

我尝试在Eclipse上使用Maven构建我的项目.第一次构建很棒.之后,我收到此错误:

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.129s
[INFO] Finished at: Wed Nov 28 17:51:35 GST 2012
[INFO] Final Memory: 2M/121M
[INFO] ------------------------------------------------------------------------
[ERROR] No goals have been specified for this build. You must specify a valid lifecycle
phase or a goal in the format <plugin-prefix>:<goal> or <plugin-group-id>
:<plugin-artifact-id>[:<plugin-version>]:<goal>. Available lifecycle phases are: …

执行主类时出现此错误.我试图在表组合中插入新记录.如您所见,我正在使用Hibernate ORM模型来做到这一点.还可以说hibernate在没有任何问题的情况下连接到数据库!

Exception in thread "main" org.hibernate.MappingException: Unknown entity: com.nortal.vspa.model.Portfolio
at org.hibernate.internal.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:1129)
at org.hibernate.internal.SessionImpl.getEntityPersister(SessionImpl.java:1402)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:117)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:204)
at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:189)
at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:756)
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:748)
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:744)
at com.nortal.vspa.main.Main.main(Main.java:24)

实体类:

@Entity
@Table(name="portfolio")
public class Portfolio implements Serializable {

private static final long serialVersionUID = -1136208004146721604L;

@Id
@Column(name="symbol")
private String symbol;

public String getSymbol()
{
    return symbol;
}

public void setSymbol(String symbol)
{
    this.symbol = symbol;
}
}

主类:

public class Main {

/**
 * @param …