/**
*证件识别接口调用示例 - 聚合数据
*在线接口文档:http://www.juhe.cn/docs/api/id/238
**/
using System;
using System.Net;
using System.IO;
using System.Text;
using System.Diagnostics;
using System.Collections.Generic;
using System.Collections.Specialized;
namespace Test_Demo
{
class 违章代缴证件上传
{
/// <summary>
/// 证件识别接口调用实例
/// </summary>
/// <param name="args"></param>
public static void Main(string[] args)
{
NameValueCollection nvc = new NameValueCollection();
//申请的key
nvc.Add("key", "申请的key");
//订单号
nvc.Add("userOrderId", "订单号");
//证件上传接口地址
string ApiUrl = "http://v.juhe.cn/wzdj/upload.php";
//证件图片路径
string ImgUrl = @"C:\uptest.jpg";
string result = HttpUploadFile(ApiUrl, ImgUrl, "A", nvc);
//识别结果
Debug.WriteLine(result);
}
/// <summary>
/// POST图片等文件(带参数)
/// </summary>
/// <param name="url">接口地址</param>
/// <param name="filePath">上传文件路径</param>
/// <param name="paramName">参数名称</param>
/// <param name="contentType">类型</param>
/// <param name="nvc">参数</param>
/// <returns></returns>
public static string HttpUploadFile(string url, string filePath, string paramName, NameValueCollection nvc)
{
string result = string.Empty;
string header = "";
string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");
byte[] boundarybytes = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");
HttpWebRequest wr = (HttpWebRequest)WebRequest.Create(url);
wr.ContentType = "multipart/form-data; boundary=" + boundary;
wr.Method = "POST";
wr.KeepAlive = true;
wr.Credentials = System.Net.CredentialCache.DefaultCredentials;
Stream rs = wr.GetRequestStream();
string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}";
foreach (string key in nvc.Keys)
{
rs.Write(boundarybytes, 0, boundarybytes.Length);
string formitem = string.Format(formdataTemplate, key, nvc[key]);
byte[] formitembytes = System.Text.Encoding.UTF8.GetBytes(formitem);
rs.Write(formitembytes, 0, formitembytes.Length);
}
rs.Write(boundarybytes, 0, boundarybytes.Length);
string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: {2}\r\n\r\n";
string extension = System.IO.Path.GetExtension(filePath);
if (extension == ".jpg")
{
header = string.Format(headerTemplate, paramName, filePath, "image/jpeg");
}
else
{
header = string.Format(headerTemplate, paramName, filePath, "application/octet-stream");
}
byte[] headerbytes = System.Text.Encoding.UTF8.GetBytes(header);
rs.Write(headerbytes, 0, headerbytes.Length);
FileStream fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
byte[] buffer = new byte[4096];
int bytesRead = 0;
while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
{
rs.Write(buffer, 0, bytesRead);
}
fileStream.Close();
byte[] trailer = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n");
rs.Write(trailer, 0, trailer.Length);
rs.Close();
WebResponse wresp = null;
try
{
wresp = wr.GetResponse();
Stream stream2 = wresp.GetResponseStream();
StreamReader reader2 = new StreamReader(stream2);
result = reader2.ReadToEnd();
}
catch (Exception ex)
{
if (wresp != null)
{
wresp.Close();
wresp = null;
}
}
finally
{
wr = null;
}
return result;
Debug.WriteLine(result);
}
}
}
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