Mybatis中插入记录后获取该条记录ID

public class User {
	
	private Integer userId;
	private String name;
	public Integer getUserId() {
		return userId;
	}
	public void setUserId(Integer userId) {
		this.userId = userId;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
}
public class User {
	
	private Int