一、代码

映射domain为继承关系

public class CocTreeNode extends CocBean implements TreeNode
     
       {   private String level1, level2;   public void setLevel1(String level1){...}  public void setLevel2(String level2){...}   public String getLevel1(){...}  public String getLevel1(){...} } public class CocBean {   protected String name;  protected Double volume;   public void setName(String name){...}  public void setVolume(Double volume){...}   public String getName(){...}  public Double getVolume(){...} }
     

二、映射xml文件

 

利用resultMap的extends属性。