ショッピングカートのサンプルコード(VB.NET) †
ここで紹介しているコードはこちらのプロキシクラスを使用しています。
ここで紹介しているコードはこちらのC#のコードをVB.NETに変換したものです。
Amazon.co.jpのリモートショッピングカートを操作する（商品をショッピングカートに入れる、出す、すべて出す、カート内を表示）サンプルです。ショッピングカートに商品を入れるには、TextBoxに商品のASINかOfferListingIdを入力します。ショッピングカートから出すには、CartItemIdを入力します。
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| | <%@ Page Language="VB" %>
<%@ Import Namespace="Amazon.jp.v20060913" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Private Const AWS_ACCESS_KEY_ID As String = "(あなたのAccessKeyID)"
Private Const ASSOCIATE_TAG As String = "dobonnet-22"
Private Const CART_ID_SESSION As String = "CartID"
Private Const CART_HMAC_SESSION As String = "Cart_HMAC"
Protected Sub Button1_Click( _
ByVal sender As Object, ByVal e As EventArgs)
AddToCart()
End Sub
Protected Sub Button2_Click( _
ByVal sender As Object, ByVal e As EventArgs)
RemoveFromCart()
End Sub
Protected Sub Button3_Click( _
ByVal sender As Object, ByVal e As EventArgs)
GetCart()
End Sub
Protected Sub Button4_Click( _
ByVal sender As Object, ByVal e As EventArgs)
ClearCart()
End Sub
Protected Sub CreateCart()
Dim ri As New CartCreateRequestItem()
ri.ASIN = TextBox1.Text
If IdTypeList.SelectedValue = "OfferListingId" Then
ri.OfferListingId = TextBox1.Text
Else
ri.ASIN = TextBox1.Text
End If
ri.Quantity = "1"
Dim req As New CartCreateRequest()
req.Items = New CartCreateRequestItem() {ri}
Dim cart As New CartCreate()
cart.AWSAccessKeyId = AWS_ACCESS_KEY_ID
cart.AssociateTag = ASSOCIATE_TAG
cart.Request = New CartCreateRequest() {req}
Dim aws As New AWSECommerceService()
Dim res As CartCreateResponse
Try
res = aws.CartCreate(cart)
Catch ex As Exception
Label1.Text = "エラー：" + Server.HtmlEncode(ex.Message)
Return
End Try
If res Is Nothing OrElse res.Cart Is Nothing Then
Label1.Text = "結果を取得できませんでした。"
Return
End If
If Not (res.Cart(0).Request.Errors Is Nothing) Then
Label1.Text = "エラー：" + _
res.Cart(0).Request.Errors(0).Message
Return
End If
Label1.Text = GetCartItemsList(res.Cart(0))
Session(CART_ID_SESSION) = res.Cart(0).CartId
Session(CART_HMAC_SESSION) = res.Cart(0).HMAC
End Sub
Protected Sub AddToCart()
If Session(CART_ID_SESSION) Is Nothing OrElse _
Session(CART_HMAC_SESSION) Is Nothing Then
CreateCart()
Return
End If
Dim ri As New CartAddRequestItem()
If IdTypeList.SelectedValue = "OfferListingId" Then
ri.OfferListingId = TextBox1.Text
Else
ri.ASIN = TextBox1.Text
End If
ri.Quantity = "1"
Dim req As New CartAddRequest()
req.CartId = CStr(Session(CART_ID_SESSION))
req.HMAC = CStr(Session(CART_HMAC_SESSION))
req.Items = New CartAddRequestItem() {ri}
Dim cart As New CartAdd()
cart.AWSAccessKeyId = AWS_ACCESS_KEY_ID
cart.AssociateTag = ASSOCIATE_TAG
cart.Request = New CartAddRequest() {req}
Dim aws As New AWSECommerceService()
Dim res As CartAddResponse
Try
res = aws.CartAdd(cart)
Catch ex As Exception
Label1.Text = "エラー：" + Server.HtmlEncode(ex.Message)
Return
End Try
If res Is Nothing OrElse res.Cart Is Nothing Then
Label1.Text = "結果を取得できませんでした。"
Return
End If
If Not (res.Cart(0).Request.Errors Is Nothing) Then
Label1.Text = "エラー：" + res.Cart(0).Request.Errors(0).Message
Return
End If
Label1.Text = GetCartItemsList(res.Cart(0))
End Sub
Protected Sub RemoveFromCart()
If Session(CART_ID_SESSION) Is Nothing OrElse _
Session(CART_HMAC_SESSION) Is Nothing Then
Label1.Text = "ショッピングカートがありません。"
Return
End If
Dim ri As New CartModifyRequestItem()
ri.CartItemId = TextBox2.Text
ri.Quantity = "0"
Dim req As New CartModifyRequest()
req.CartId = CStr(Session(CART_ID_SESSION))
req.HMAC = CStr(Session(CART_HMAC_SESSION))
req.Items = New CartModifyRequestItem() {ri}
Dim cart As New CartModify()
cart.AWSAccessKeyId = AWS_ACCESS_KEY_ID
cart.AssociateTag = ASSOCIATE_TAG
cart.Request = New CartModifyRequest() {req}
Dim aws As New AWSECommerceService()
Dim res As CartModifyResponse
Try
res = aws.CartModify(cart)
Catch ex As Exception
Label1.Text = "エラー：" + Server.HtmlEncode(ex.Message)
Return
End Try
If res Is Nothing OrElse res.Cart Is Nothing Then
Label1.Text = "結果を取得できませんでした。"
Return
End If
If Not (res.Cart(0).Request.Errors Is Nothing) Then
Label1.Text = "エラー：" + _
res.Cart(0).Request.Errors(0).Message
Return
End If
Label1.Text = GetCartItemsList(res.Cart(0))
End Sub
Protected Sub GetCart()
If Session(CART_ID_SESSION) Is Nothing OrElse _
Session(CART_HMAC_SESSION) Is Nothing Then
Label1.Text = "ショッピングカートがありません。"
Return
End If
Dim req As New CartGetRequest()
req.CartId = CStr(Session(CART_ID_SESSION))
req.HMAC = CStr(Session(CART_HMAC_SESSION))
Dim cart As New CartGet()
cart.AWSAccessKeyId = AWS_ACCESS_KEY_ID
cart.AssociateTag = ASSOCIATE_TAG
cart.Request = New CartGetRequest() {req}
Dim aws As New AWSECommerceService()
Dim res As CartGetResponse
Try
res = aws.CartGet(cart)
Catch ex As Exception
Label1.Text = "エラー：" + Server.HtmlEncode(ex.Message)
Return
End Try
If res Is Nothing OrElse res.Cart Is Nothing Then
Label1.Text = "結果を取得できませんでした。"
Return
End If
If Not (res.Cart(0).Request.Errors Is Nothing) Then
Label1.Text = "エラー：" + _
res.Cart(0).Request.Errors(0).Message
Return
End If
Label1.Text = GetCartItemsList(res.Cart(0))
End Sub
Protected Sub ClearCart()
If Session(CART_ID_SESSION) Is Nothing OrElse _
Session(CART_HMAC_SESSION) Is Nothing Then
Label1.Text = "ショッピングカートがありません。"
Return
End If
Dim req As New CartClearRequest()
req.CartId = CStr(Session(CART_ID_SESSION))
req.HMAC = CStr(Session(CART_HMAC_SESSION))
Dim cart As New CartClear()
cart.AWSAccessKeyId = AWS_ACCESS_KEY_ID
cart.AssociateTag = ASSOCIATE_TAG
cart.Request = New CartClearRequest() {req}
Dim aws As New AWSECommerceService()
Dim res As CartClearResponse
Try
res = aws.CartClear(cart)
Catch ex As Exception
Label1.Text = "エラー：" + Server.HtmlEncode(ex.Message)
Return
End Try
If res Is Nothing OrElse res.Cart Is Nothing Then
Label1.Text = "結果を取得できませんでした。"
Return
End If
If Not (res.Cart(0).Request.Errors Is Nothing) Then
Label1.Text = "エラー：" + _
res.Cart(0).Request.Errors(0).Message
Return
End If
Label1.Text = GetCartItemsList(res.Cart(0))
End Sub
Protected Function GetCartItemsList(ByVal cart As Cart) As String
Dim ret As String = ""
ret = "ショッピングカート内の商品 :<br />" + vbLf
If Not (cart.CartItems Is Nothing) Then
ret += "<ul>" + vbLf
Dim i As CartItem
For Each i In cart.CartItems.CartItem
ret += "<li><b>" + i.Title + "</b><br />" + vbLf
ret += "数量 : " + i.Quantity + "<br />" + vbLf
ret += "価格 : " + i.ItemTotal.FormattedPrice + _
"<br />" + vbLf
ret += "CartItemId : " + i.CartItemId + "<br />" + _
vbLf
Next i
ret += "</ul>" + vbLf
ret += "合計 : " + cart.SubTotal.FormattedPrice + _
"<br />" + vbLf
ret += "<a href=""" + cart.PurchaseURL + _
""">購入する</a><br />" + vbLf
Else
ret += "カートは空です。<br />" + vbLf
End If
Return ret
End Function
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Amazonショッピングカート</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="IdTypeList" runat="server">
<asp:ListItem>ASIN</asp:ListItem>
<asp:ListItem>OfferListingId</asp:ListItem>
</asp:DropDownList>
<asp:TextBox ID="TextBox1" runat="server" EnableViewState="False">
</asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="カートに入れる"
OnClick="Button1_Click" />
<br />
<label for="TextBox2">CartItemId : </label>
<asp:TextBox ID="TextBox2" runat="server" EnableViewState="False">
</asp:TextBox>
<asp:Button ID="Button2" runat="server" Text="カートから出す"
OnClick="Button2_Click" /><br />
<asp:Button ID="Button3" runat="server" OnClick="Button3_Click"
Text="カートの中身を見る" />
<asp:Button ID="Button4" runat="server" Text="カートをクリア"
OnClick="Button4_Click" /><br />
</div>
</form>
<br />
<asp:Label ID="Label1" runat="server" EnableViewState="False">
</asp:Label>
</body>
</html>
|
