克隆

@Component
public class Project implements Cloneable{

    public Object clone() throws CloneNotSupportedException {
           return super.clone();
    }

}

  Project newProject=null;
      try {
          newProject =(Project) project.clone();
      } catch (CloneNotSupportedException e) {
          newProject = new Project();
      }

思路：
Project类实现Clonable接口