Struts2 type conversion continued

For the previous blog, if multiple points are entered, how can this problem be solved:

1. The input page is as follows. Assume that the names of the three input points are the same.

1. <% @ Page contenttype = "text/html; charset = GBK" %>
2. <% @ Taglib prefix = "S" uri = "/Struts-tags" %>
4. <S: Form Action = "converter" method = "Post">
5. <S: textfield name = "point" label = "point1"/>
6. <S: textfield name = "point" label = "point2"/>
7. <S: textfield name = "point" label = "point3"/>
8. <S: textfield name = "Age" label = "Age"/>
9. <S: textfield name = "username" label = "username"/>
10. <S: textfield name = "date" label = "date"/>
11. <S: Submit label = "Submit"/>
12. </S: Form>

2. The coverter class has been modified.

1. Package edu. HUST. Common;
3. Import java. util. arraylist;
4. Import java. util. List;
5. Import java. util. Map;
7. Import org. Apache. struts2.util. strutstypeconverter;
9. Import edu. HUST. Bean. Point;
11. Public class converter extends strutstypeconverter {
13. @ Suppresswarnings ("unchecked ")
14. @ Override
15. Public object convertfromstring (MAP context, string [] values, class toclass ){
16. List <point> pointlist = new arraylist <point> ();
17. For (string value: values ){
18. Point point = new point ();
19. String [] paramvalues = value. Split (",");
21. Int x = integer. parseint (paramvalues [0]);
22. Int y = integer. parseint (paramvalues [1]);
24. Point. setx (X );
25. Point. sety (y );
27. Pointlist. Add (point );
28. }
30. Return pointlist;
31. }
33. @ Suppresswarnings ("unchecked ")
34. @ Override
35. Public String converttostring (MAP context, object O ){
36. List <point> pointlist = (list <point>) O;
37. Stringbuilder sb = new stringbuilder ();
38. For (point: pointlist ){
39. SB = sb. append (point. getx (). append (","). append (point. Gety (). append ("<br> ");
40. }
41. Return sb. tostring ();
42. }
44. }

3. Only one change is allowed to the converteraction class.

1. /*
2. * It turns out to be a point. Here we change it to list <point>. I haven't tried to use arrays, but using list is a common practice.
3. */
4. Public class converteraction extends actionsupport {
5. Private list <point> point;
7. Public list <point> getpoint (){
8. Return Point;
9. }
10. Public void setpoint (list <point> point ){
11. This. Point = point;
12. }
13. }

The other parts are not changed, so that multiple forms with the same name can be submitted simultaneously.