WebService 接收JSON字符串

Dear 丶 2023-06-02 10:55 12阅读 0赞

晚上学习时公司的同事，暂且叫A吧，A：“我们公司XXX纺织的AM接口不通，让我看下”，我：“接口写的不是有AJAX异步请求的示例嘛，参考下，我都测试过接口，都是通的。”，A：“我走的不是AJAX，走的CS端”，我：“哦，明白了，CS端的HttpWebRequest模拟前端的AJAX请求，我之前写过一次，我写个DEMO调试看看”

# 排查结果如下 #

## **错误示例，因为CS没法前面加前缀：jsonData** ##

![1504448-20190807000950900-344425566.png][]

## **正确的AJAX示例，前面有jsonData(因为后台获取的是jsonData中的数据，CS端这个没法传)** ##

![1504448-20190807000913015-346379947.png][]

![1504448-20190807001413329-1347695382.png][]

## **网上找了半天解决方法，我们可以使用上下文，获取JSON数据流，然后在将流还原回JSON字符串即可** ##

1             Stream s = HttpContext.Current.Request.InputStream;//获得json 字符流
    2             //还原数据流
    3             byte[] b = new byte[s.Length];
    4             s.Read(b, 0, (int)s.Length);
    5             string jsontext = Encoding.UTF8.GetString(b); //JSON字符串

![1504448-20190807001610848-1558234025.png][]

## **cs端HttpWebRequest示例** ##

1         private void button1_Click(object sender, EventArgs e)
     2         {
     3             string res = PostWebRequest("http://XXXXXXX/webService/eCimsService.asmx/GetHullParts", "{\"ProjNo\":\"H001\",\"SectionNo\":\"C002\",Data:[]}", Encoding.UTF8);
     4         }
     5         /// <summary>
     6         /// Post数据接口
     7         /// </summary>
     8         /// <param name="postUrl">接口地址</param>
     9         /// <param name="paramData">提交json数据</param>
    10         /// <param name="dataEncode">编码方式(Encoding.UTF8)</param>
    11         /// <returns></returns>
    12         private static string PostWebRequest(string postUrl, string paramData, Encoding dataEncode)
    13         {
    14             string responseContent = string.Empty;
    15             try
    16             {
    17                 byte[] byteArray = dataEncode.GetBytes(paramData); //转化
    18                 HttpWebRequest webReq = (HttpWebRequest)WebRequest.Create(new Uri(postUrl));
    19                 webReq.Method = "POST";
    20                 webReq.ContentType = "application/x-www-form-urlencoded; charset=UTF-8";
    21                 webReq.Accept = "*/*"; //注：调试的过程中，报415，这里可能需要修改下
    22                 webReq.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36";
    23                 webReq.ContentLength = byteArray.Length;
    24                 using (Stream reqStream = webReq.GetRequestStream())
    25                 {
    26                     reqStream.Write(byteArray, 0, byteArray.Length);//写入参数
    27                     //reqStream.Close();
    28                 }
    29                 using (HttpWebResponse response = (HttpWebResponse)webReq.GetResponse())
    30                 {
    31                     using (Stream myResponseStream = response.GetResponseStream())
    32                     {
    33                         using (StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.UTF8))
    34                         {
    35                             responseContent = myStreamReader.ReadToEnd().ToString();
    36                         }
    37                     }
    38                 }
    39             }
    40             catch (Exception ex)
    41             {
    42                 return ex.Message;
    43             }
    44             return responseContent;
    45         }

转载于:https://www.cnblogs.com/chenyanbin/p/11312704.html

[1504448-20190807000950900-344425566.png]: /images/20230601/211e9f5118034b66b6f9a575664f15f1.png
[1504448-20190807000913015-346379947.png]: /images/20230601/4fdb34a8a0ef40bfa679e6ce0deffaac.png
[1504448-20190807001413329-1347695382.png]: /images/20230601/01c33e78c87745e091d8147ecf135dbe.png
[1504448-20190807001610848-1558234025.png]: /images/20230601/8b7cf5189e8a4fc3ba8bff5028a11f6f.png