hibernate\ many to many \one to one\Iterator\\Set

vo包

Iaitem.java

1. importjava.util.Set;
3. /**
4. *@author
5. *@version创建时间：Jan2,200911:42:16AM
6. *类说明
7. */
8. publicclassIaitem{
9. privateintitemid;
10. privateStringitemname;
11. privateintitemcode;
12. //代表全部的子栏目
13. privateSetiasubitems;
15. publicintgetItemid(){
16. returnitemid;
17. }
18. publicvoidsetItemid(intitemid){
19. this.itemid=itemid;
20. }
21. publicStringgetItemname(){
22. returnitemname;
23. }
24. publicvoidsetItemname(Stringitemname){
25. this.itemname=itemname;
26. }
27. publicintgetItemcode(){
28. returnitemcode;
29. }
30. publicvoidsetItemcode(intitemcode){
31. this.itemcode=itemcode;
32. }
33. //
34. publicSetgetIasubitems(){
35. returniasubitems;
36. }
37. //
38. publicvoidsetIasubitems(Setiasubitems){
39. this.iasubitems=iasubitems;
40. }
41. }

Iaitem.hbm.xml

1. <?xmlversion="1.0"encoding="utf-8"?>
2. <!DOCTYPEhibernate-mappingPUBLIC"-//Hibernate/HibernateMappingDTD3.0//EN"
3. "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
4. <!--
5. MappingfileautogeneratedbyMyEclipsePersistenceTools
6. -->
7. <hibernate-mapping>
8. <classname="com.123.mgzst.vo.Iaitem"table="IAITEM"schema="STMG">
9. <idname="itemid"type="java.lang.Integer">
10. <columnname="ITEMID"precision="22"/>
11. <generatorclass="sequence">
12. <paramname="sequence">STMG.item_id_seq</param><!-- seq--> <!-- native--> <!-- native-->
13. </generator>
14. </id>
15. <propertyname="itemname"type="java.lang.String">
16. <columnname="ITEMNAME"length="50"/>
17. </property>
18. <propertyname="itemcode"type="java.lang.Integer">
19. <columnname="ITEMCODE"precision="22"/>
20. </property>
21. <!-- set-->
22. <setname="iasubitems"inverse="true"cascade="all"table="IASUBITEM">
23. <key>
24. <columnname="ITEMID"precision="22"/>
25. </key>
26. <one-to-manyclass="com.123.mgzst.vo.Iasubitem"/><!-- one to many-->
27. </set>
28. </class>
29. </hibernate-mapping>

Iasubitem.java

1. publicclassIasubitem{
3. privateintsubid;
4. privateStringsubname;
5. privateintitemid;
6. privateintsubcode;
7. privateIaitemiaitem;
9. publicintgetSubid(){
10. returnsubid;
11. }
12. publicvoidsetSubid(intsubid){
13. this.subid=subid;
14. }
15. publicStringgetSubname(){
16. returnsubname;
17. }
18. publicvoidsetSubname(Stringsubname){
19. this.subname=subname;
20. }
21. publicintgetItemid(){
22. returnitemid;
23. }
24. publicvoidsetItemid(intitemid){
25. this.itemid=itemid;
26. }
27. publicintgetSubcode(){
28. returnsubcode;
29. }
30. publicvoidsetSubcode(intsubcode){
31. this.subcode=subcode;
32. }
33. publicIaitemgetIaitem(){
34. returniaitem;
35. }
36. publicvoidsetIaitem(Iaitemiaitem){
37. this.iaitem=iaitem;
38. }
40. }

Iasubitem.hbm.xml

1. <?xmlversion="1.0"encoding="utf-8"?>
2. <!DOCTYPEhibernate-mappingPUBLIC"-//Hibernate/HibernateMappingDTD3.0//EN"
3. "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
4. <!--
5. MappingfileautogeneratedbyMyEclipsePersistenceTools
6. -->
7. <hibernate-mapping>
8. <classname="com.123.mgzst.vo.Iasubitem"table="IASUBITEM"schema="STMG">
9. <idname="subid"type="java.lang.Integer">
10. <columnname="SUBID"precision="22"/>
11. <generatorclass="sequence">
12. <paramname="sequence">STMG.subitem_id_seq</param>
13. </generator>
14. </id>
15. <!-- many to one-->
16. <many-to-onename="iaitem"class="com.123.mgzst.vo.Iaitem"fetch="select">
17. <columnname="ITEMID"precision="22"/>
18. </many-to-one>
19. <propertyname="subname"type="java.lang.String">
20. <columnname="SUBNAME"length="50"/>
21. </property>
22. <propertyname="subcode"type="java.lang.Integer">
23. <columnname="SUBCODE"precision="22"/>
24. </property>
25. </class>
26. </hibernate-mapping>

dao

IItemDAOImpl.java

1. publicclassIItemDAOImplextendsHibernateDaoSupportimplementsIItemDAO{
3. publicListqueryAll()throwsException{
4. //TODOAuto-generatedmethodstub
5. Stringhql="FROMIaitemASi";
6. Listall=super.getSession().createQuery(hql).list();
7. returnall;
8. }
10. }

action

ItemAction.java

1. publicclassItemActionextendsDispatchAction{
2. privateIItemDAOiitemdao;
3. /*
4. *GeneratedMethods
5. */
7. /**
8. *Methodexecute
9. *@parammapping
10. *@paramform
11. *@paramrequest
12. *@paramresponse
13. *@returnActionForward
14. */
15. publicActionForwardselectall(ActionMappingmapping,ActionFormform,
16. HttpServletRequestrequest,HttpServletResponseresponse){
17. ItemFormitemForm=(ItemForm)form;//TODOAuto-generatedmethodstub
18. Listall=null;
19. try{
20. all=this.iitemdao.queryAll();
21. //Iterator
22. Iteratoriter=all.iterator(); //all是一个List
23. while(iter.hasNext()){
24. Iaitemitem=(Iaitem)iter.next();
25. System.out.println(item.getItemname());
26. Iteratorit=item.getIasubitems().iterator(); /////item.getIasubitems()
27. while(it.hasNext()){
28. Iasubitemsi=(Iasubitem)it.next();
29. System.out.println("|-"+si.getSubname());
30. }
31. }
32. }catch(Exceptione){
33. //TODOAuto-generatedcatchblock
34. e.printStackTrace();
35. }
36. request.setAttribute("all",all);
37. returnmapping.findForward("question");
38. }

jsp

1. <logic:iterateid="item"scope="request"name="all">
2. ${item.itemname}<br>
3. <logic:iterateid="subitem"name="item"property="iasubitems">
4. |-${subitem.subname}<br>
5. </logic:iterate>
6. </logic:iterate>