如何使用ASP.NET C＃启动amazon api [英] How to start amazon api using ASP.NET C#

问题描述

hi


即将开始在我的ASP.NET网站上使用AMAZON API。问题是我搜索关于亚马逊api的很多如何在asp.net c＃中使用它，但我找不到任何最好的理解。我只是新的api所以想要一个简单的代码来显示我的网站上的产品与购买链接。



我找到了一个示例代码，但有一些错误，如远程服务器返回错误：（400）错误请求

所以请大家帮我修正错误或提供一些最佳代码



谢谢



我的尝试：

hi
im just starting to use AMAZON API in my ASP.NET website. problem is i search lot about amazon api that how to use it in asp.net c# but i could not found anything best for my understanding. im just new for api so want just a simple code to show products on my website with buy link.

I have found a sample code but there are some errors like "The remote server returned an error: (400) Bad Request"
So please guys help me to fix errors or provide me some best code

THANKS

What I have tried:

public partial class _Default : System.Web.UI.Page
     {
        //Set your Access Key and Secret Key in following variables.
        private const string MY_AWS_ACCESS_KEY_ID = "my access key";
        private const string MY_AWS_SECRET_KEY = "my secret key";
    private const string DESTINATION = "ecs.amazonaws.com";
    

    protected void Page_Load(object sender, EventArgs e)
    {
       
    }

    protected void btnSearch_Click(object sender, EventArgs e)
    {
        //Use SignedRequesthelper class to generate signed request. 
        SignedRequestHelper helper = new SignedRequestHelper(MY_AWS_ACCESS_KEY_ID, MY_AWS_SECRET_KEY, DESTINATION);

        IDictionary<string, string> requestParams = new Dictionary<string, String>();
        requestParams["Service"] = "AWSECommerceService";
        //Leave following line commented if you want to use latest version of Amazon API. You can uncomment this line to use a specific version.
        requestParams["Version"] = "2009-03-31";
        //requestParams["Operation"] = "ItemLookup";
        requestParams["Operation"] = "ItemSearch";
        requestParams["SearchIndex"] = selectCategories.Value;
        requestParams["Keywords"] = txtSearch.Text;

        //Get signed URL in a variable
        string requestUrl = helper.Sign(requestParams);
  
        //Get response from signed request
        DataSet DS = GetData(requestUrl);

        if (DS != null)
        {
            //Bind ItemAttributes table returned in dataset. This will give you product details.
            gridViewAttributes.DataSource = DS.Tables["ItemAttributes"];
            gridViewAttributes.DataBind();

            //Bind Item table returned in dataset. This will give you product link page.
            gridViewItem.DataSource = DS.Tables["Item"];
            gridViewItem.DataBind();
            lblError.Text = "";

            //You can set debug point here and inspect content of Datased(DS).
            //it has few more tables that you might be interested in.
        }
    }
        DataSet GetData(string signedurl)
    {
        try
        {
            //Create a request object using signed URL.
            WebRequest request = HttpWebRequest.Create(signedurl);
            //Get response in a stream          
            //WebRequest request = HttpWebRequest.Create(url);
            //WebResponse response = request.GetResponse();
            Stream responseStream = request.GetResponse().GetResponseStream();
            
          //  Stream responses = request.GetResponse().GetResponseStream();
            DataSet DS = new DataSet();
            //Read returned resonpse stream into a dataset.
            //Note: You can also use XMLDocument element here to read response.
            DS.ReadXml(responseStream);
            responseStream.Close();

            return DS;
        }
        catch (Exception e)
        {
            //If there is an error capture it.
            //If you get an error, it could be either because of invalid keyword or you provided wrong access key.
            lblError.Text = e.Message;
            Response.Write("Caught Exception: " + e.Message);
            Response.Write("Stack Trace: " + e.StackTrace);
        }

        return null;
    }

推荐答案

你错过了签名& 时间戳参数。另请查看您的服务网址，它应该是 [服务链接]



我能够使用以下参数访问该服务。



[带参数的服务链接]

you are missing the Signature & timestamp parameters. Also check your service URL, it should be [Link of service]

I was able to access the service with below parameters.

[Link to service with parameters]

这篇关于如何使用ASP.NET C＃启动amazon api的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！