1. 启动Tomcat时报错：
Repeated column in mapping for entity; com.coe.dto.Trainingapproval column: userid (should be mapped with insert="false" update="false")
看到这篇文章说是有重复的列：
我的是这样的：
@Column(name = "type_id")
private Long typeId = 0L;
@Column(name = "type_id")
private Type type = null;
把下面的注释了后就对了。
@Column(name = "type_id")
private Long typeId = 0L;
//
// @Column(name = "type_id")
// private Type type = null;