public abstract class BaseEntity implements Serializable {

private static final long serialVersionUID = -67188388306700736L;

/** "ID"属性名称 */
public static final String ID_PROPERTY_NAME = "id";

/** "创建时间"属性名称 */
public static final String CREATE_TIME_PROPERTY_NAME = "createTime";

/** "修改时间"属性名称 */
public static final String MODIFY_TIME_PROPERTY_NAME = "modifyTime";

｝

 public class TreeEntity extends BaseEntity {

    private static final long serialVersionUID = 10428486683690275L;

    /** 父节点ID */
    private String parentid;

    /** 节点文本 */
    private String text;

    /** 节点样式 */
    private String iconCls;

    /** 是否叶子节点 */
    private Boolean leaf;
    ｝

        Controller层：
@RequestMapping(value="/eqtTree")
    @ResponseBody
    public Object eqtTree(@RequestParam Long id, @RequestParam String eqtLevel){
        return partInfoService.eqtTree(id, eqtLevel);
    }

        Json：
        0: {id: 2, createTime: null, modifyTime: null}
createTime: null
id: 2
modifyTime: null
1: {id: 5, createTime: null, modifyTime: null}
2: {id: 3, createTime: null, modifyTime: null}
3: {id: 1, createTime: null, modifyTime: null}

对于TreeEtity生成的List集合在调试中是所有属性都赋有值的,但是在Controller执行后返回的json只有basseEntity属性