Flex3 CRUD 与Java后台交互 完整Demo

import?mx.collections.XMLListCollection;??
1. import?mx.controls.Alert;??
2. import?mx.controls.TextInput;??
3. import?mx.events.AdvancedDataGridEvent;??
4. import?mx.events.CloseEvent;??
5. import?mx.rpc.events.ResultEvent;??
6. private?var?params:Object?=?new?Object();??
7. //private?var?ld:XMLListCollection;?官方文档的XMLListCollection并不能用,例子有问题郁闷??
8. [Bindable]??
9. private?var?_result?:?XML?;?//注意文件名防止冲突??
10. /**??
11. ?*?xml数据的渲染??
12. ?*?*/??
13. public?function?resultHandler(event:ResultEvent):void???
14. {??
15. ????_result?=?XML(event.result);??
16. }??
17. /**??
18. ?*?查询所有产品的按钮事件??
19. ?*?*/??
20. public?function?insertItemHandler(event:ResultEvent):void???
21. {??
22. ????fill();??
23. }??
24. ?*?查询所有产品的方法???
25. public?function?fill():void??
26. ????//为productService(HTTPService)?重新绑定监听器(查询)??
27. ????productService.removeEventListener(ResultEvent.RESULT,insertItemHandler);??
28. ????productService.addEventListener(ResultEvent.RESULT,resultHandler);??
29. ????productService.method?=?"GET";??
30. ????//要传递的参数??
31. ????params['method']?=?"findAll";??
32. ????productService.cancel();??
33. ????productService.send(params);??
34. ????//切换到Grid视图??
35. ????viewstack1.selectedIndex=1;??
36. ?*?插入产品??
37. public?function?insertProduct():void??
38. ????//绑定新的监听器(插入)??
40. ????productService.method?=?"POST";??
41. ????//传递Form表单参数??
42. ????params?=?{"method":?"save",?"id":?NaN,?"productName":?productName.text,??
43. ?????????????????"remark":?remark.text};??
44. ????productService.cancel();??
45. ????productService.send(params);??
46. ????clearInputFields();??
47. ?*???
48. ?*?更新记录的事件处理函数??
49. public?function?updateHandler(event:AdvancedDataGridEvent):void??
50. ????//取消的话不更新??
51. ????if(event.reason?==?"cancelled")??
52. ????{??
53. ????????return;??
54. ????}??
55. ????//重新注册??
56. ????productService.removeEventListener(ResultEvent.RESULT,108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> ????productService.addEventListener(ResultEvent.RESULT,248); line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> ?????//得到输入后的新数据??????
57. ?????var?newData:String?=?(TextInput(event.currentTarget.itemEditorInstance)).text;??
58. ?????//得到输入前的三个数据??
59. ?????var?_id?:?int??=?this.grid1.selectedItem["id"];??
60. ?????var?_productName?:String?=?this.grid1.selectedItem["productName"];??
61. ?????var?_remark?:String?=?this.grid1.selectedItem["remark"];??
62. ?????//第二列为产品名称??
63. ?????if(event.columnIndex?==?1)??
64. ?????{??
65. ?????????_productName?=?newData;??
66. ?????}??
67. ?????//第三列为备注??
68. ?????if(event.columnIndex?==?2)??
69. ?????{??
70. ?????????_remark?=?newData;??
71. ?????}??
72. ?????params?=?{"method":?"update",?"id":?_id,"productName":_productName,"remark":_remark};??
73. ?????productService.cancel();??
74. ?????productService.send(params);??
75. ?*?删除的方法??
76. public?function?remove()?:?void??
77. ????var?index:int?=?this.grid1.selectedIndex;??
78. ????if(index?==?-1)??
79. ?????????Alert.show("您没有选择任何记录","提示");??
80. ?????????return;??
81. ????}??
82. ?????Alert.yesLabel?=?"确定";??
83. ?????Alert.cancelLabel?=?"取消";??
84. ?????Alert.show("确定要删除吗?","提示",Alert.YES|Alert.CANCEL,this,defaultCloseHandler);??
85. ?*?处理选择是否删除后的事件??
86. public?function?defaultCloseHandler(event:CloseEvent):void??
87. ?????//如果点击了确定??
88. ?????if(event.detail?==?Alert.YES)??
89. ??????????productService.removeEventListener(ResultEvent.RESULT,248); line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> ?????????productService.addEventListener(ResultEvent.RESULT,108); list-style:decimal-leading-zero outside; color:inherit; line-height:18px; margin:0px!important; padding:0px 3px 0px 10px!important"> ??????????var?id?:?String??=?this.grid1.selectedItem["id"];??
90. ?????????params?=?{"method":?"remove",?"id":?id};??
91. ?????????productService.cancel();??
92. ?????????productService.send(params);??
93. ?*?清除form中的属性值??
94. private?function?clearInputFields():void??
95. ????productName.text?=?"";??
96. ????remark.text?=?"";??
97. }??

（编辑：李大同）

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