SSH实现联级,该如何处理

 public class TblFwxx implements java.io.Serializable {    // Fields    private Integer fwid;    private TblFwxx tblFwxx;    private TblQx tblQx;    private TblJd tblJd;    private TblUser tblUser;    private TblFwlx tblFwlx;    private Integer shi;    private Integer ting;    private String fwxx;    private Double zj；[code]区县实体：[code=Java]public class TblQx implements java.io.Serializable {    // Fields    private Integer qxid;    private String qx;    private Set tblFwxxes = new HashSet(0);    private Set tblJds = new HashSet(0);    // Constructors    /** default constructor */    public TblQx() {    }    /** full constructor */    public TblQx(String qx, Set tblFwxxes, Set tblJds) {        this.qx = qx;        this.tblFwxxes = tblFwxxes;        this.tblJds = tblJds;    }