protected XDocument ItemSearch(string keywords, string searchIndex = "All", string responseGroup = "Large", int itemPage = 1)
{
var request = new Dictionary<string, string>();
request["Service"] = "AWSECommerceService";
request["Version"] = "2011-08-01";
request["Operation"] = "ItemSearch";
request["SearchIndex"] = searchIndex;
request["ResponseGroup"] = responseGroup;
request["Keywords"] = keywords;
request["ItemPage"] = itemPage.ToString();
var helper = new AmazonSignedRequestHelper(MY_AWS_ACCESS_KEY_ID, MY_AWS_SECRET_KEY, MY_ASSOCIATE_TAG, DESTINATION);
var requestUrl = helper.Sign(request);
var doc = XDocument.Load(requestUrl);
TotalPages = Int32.Parse(doc
.Element(NAMESPACE + "ItemSearchResponse")
.Element(NAMESPACE + "Items")
.Element(NAMESPACE + "TotalPages")
.Value);
// Amazon affiliate currently limits search results to 5 pages.
TotalPages = TotalPages > MAX_SEARCH_RESULT ? MAX_SEARCH_RESULT : TotalPages;
return doc;
}
// 准备用于重新装载的请求的 URL
int GetReloadRequestUrl(
List<ListViewItem> items,
string strElementSet,
out string strUrl,
out string strError)
{
strError = "";
strUrl = "";
AmazonSignedRequestHelper helper = new AmazonSignedRequestHelper(
//MY_AWS_ACCESS_KEY_ID,
//MY_AWS_SECRET_KEY,
this.CurrentServer);
if (items == null || items.Count == 0)
{
strError = "items 参数不应为空";
return -1;
}
// 获得 ASIN 字符串
StringBuilder asin = new StringBuilder(4096);
foreach (ListViewItem item in items)
{
if (asin.Length > 0)
asin.Append(",");
asin.Append(item.Text);
}
IDictionary<string, string> parameters = new Dictionary<string, String>();
parameters["Service"] = "AWSECommerceService";
parameters["Version"] = "2011-08-01";
parameters["Operation"] = "ItemLookup";
parameters["ItemId"] = asin.ToString();
parameters["IdType"] = "ASIN";
if (strElementSet == "F")
parameters["ResponseGroup"] = "Large";
else
parameters["ResponseGroup"] = "Small";
#if TTT
parameters["AssociateTag"] = ASSOCIATEKEY;
#endif
strUrl = helper.Sign(parameters);
return 0;
}
// 准备用于获得下一批浏览记录的请求的 URL
int GetNextRequestUrl(out string strUrl,
out string strError)
{
strError = "";
strUrl = "";
if (string.IsNullOrEmpty(this.m_strCurrentSearchedServer) == true)
{
strError = "this.m_strCurrentSearchedServer 为空";
return -1;
}
AmazonSignedRequestHelper helper = new AmazonSignedRequestHelper(
//MY_AWS_ACCESS_KEY_ID,
//MY_AWS_SECRET_KEY,
this.m_strCurrentSearchedServer); // this.CurrentServer
if (this.m_nCurrentPageNo == -1)
{
strError = "m_nCurrentPageNo 尚未初始化";
return -1;
}
// ItemPage URL 参数的值是从 1 开始计算的
m_searchParameters["ItemPage"] = (this.m_nCurrentPageNo + 1 + 1).ToString();
strUrl = helper.Sign(m_searchParameters);
return 0;
}
// 准备用于首次检索的 URL
int GetSimpleSearchRequestUrl(out string strUrl,
out string strError)
{
strError = "";
strUrl = "";
string strText = "";
int nRet = this.amazonSimpleQueryControl_simple.BuildQueryString(out strText, out strError);
if (nRet == -1)
return -1;
AmazonSignedRequestHelper helper = new AmazonSignedRequestHelper(
//MY_AWS_ACCESS_KEY_ID,
//MY_AWS_SECRET_KEY,
this.CurrentServer);
// IDictionary<string, string> r1 = this.amazonQueryControl1.ParameterTable; // new Dictionary<string, String>();
IDictionary<string, string> parameters = new Dictionary<string, String>();
parameters["Service"] = "AWSECommerceService";
parameters["Version"] = "2011-08-01";
parameters["Operation"] = "ItemSearch";
parameters["SearchIndex"] = "Books";
parameters["Power"] = strText;
if (this.AlwaysUseFullElementSet == true)
parameters["ResponseGroup"] = "Large";
else
parameters["ResponseGroup"] = "Small";
#if TTT
parameters["AssociateTag"] = ASSOCIATEKEY;
#endif
m_searchParameters = parameters;
m_strCurrentSearchedServer = this.CurrentServer;
strUrl = helper.Sign(parameters);
return 0;
}
// 准备用于获得下一批浏览记录的请求的 URL
int GetNextRequestUrl(
string strServerUrl,
out string strUrl,
out string strError)
{
strError = "";
strUrl = "";
AmazonSignedRequestHelper helper = new AmazonSignedRequestHelper(
//MY_AWS_ACCESS_KEY_ID,
//MY_AWS_SECRET_KEY,
strServerUrl);
if (this.m_nCurrentPageNo == -1)
{
strError = "m_nCurrentPageNo 尚未初始化";
return -1;
}
// ItemPage URL 参数的值是从 1 开始计算的
m_searchParameters["ItemPage"] = (this.m_nCurrentPageNo + 1 + 1).ToString();
strUrl = helper.Sign(m_searchParameters);
return 0;
}
// private const string DESTINATION = "webservices.amazon.cn"; // "ecs.amazonaws.com";
// 准备用于检索的 URL
int GetOneLineSearchRequestUrl(
string strServerUrl,
string strWord,
string strFrom,
string strMatch,
bool bUseFullElementSet,
out string strUrl,
out string strError)
{
strError = "";
strUrl = "";
if (string.IsNullOrEmpty(strWord) == true)
{
strError = "strWord 参数值不能为空";
return -1;
}
string strText = "";
// 构造检索式
int nRet = BuildQueryString(
strWord,
strFrom,
strMatch,
out strText,
out strError);
if (nRet == -1)
return -1;
AmazonSignedRequestHelper helper = new AmazonSignedRequestHelper(
//MY_AWS_ACCESS_KEY_ID,
//MY_AWS_SECRET_KEY,
strServerUrl);
IDictionary<string, string> parameters = new Dictionary<string, String>();
parameters["Service"] = "AWSECommerceService";
parameters["Version"] = "2011-08-01";
parameters["Operation"] = "ItemSearch";
parameters["SearchIndex"] = "Books";
parameters["Power"] = strText;
if (bUseFullElementSet == true)
parameters["ResponseGroup"] = "Large";
else
parameters["ResponseGroup"] = "Small";
#if TTT
parameters["AssociateTag"] = ASSOCIATEKEY;
#endif
m_searchParameters = parameters;
// m_strCurrentSearchedServer = this.CurrentServer;
strUrl = helper.Sign(parameters);
return 0;
}
