前言：最近公司项目与外部api接口对接较多 ，写下自己的代码总结。介绍两种访问方式（HttpClient、HttpWebRequest）
一、HttpWebRequest 访问Api
private static string webPost(
string url,
string obj =
null)
{
string param = (obj);
//参数
byte[] bs =
Encoding.Default.GetBytes(param);
HttpWebRequest req =
(HttpWebRequest)HttpWebRequest.Create(url);
req.Method =
"POST";
req.ContentType =
"application/json";
req.ContentLength =
bs.Length;
using (Stream reqStream =
req.GetRequestStream())
{
reqStream.Write(bs, 0, bs.Length);
reqStream.Close();
HttpWebResponse response2 =
(HttpWebResponse)req.GetResponse();
StreamReader sr2 =
new StreamReader(response2.GetResponseStream(), Encoding.UTF8);
string result =
sr2.ReadToEnd();
return result;
}
}
二、HttpClient访问Api
/// <summary>/// Get请求/// </summary>
public string GetToken()
{
try
{
HttpClient myHttpClient =
new HttpClient();
var urlstring =
"https://oapi.dingtalk.com/gettoken?appkey=APPKEY&appsecret=APPSECRET";
urlstring = urlstring.Replace(
"APPKEY", appkey);
urlstring = urlstring.Replace(
"APPSECRET", appsecret);
HttpResponseMessage response =
myHttpClient.GetAsync(urlstring).Result;
var content = response.Content.ReadAsAsync<
object>
().Result;
return content；
}
catch (Exception ex)
{
return ex.Message；
}
}
/// <summary>
/// Post请求
/// </summary>
public string getList(
long unixstart,
long unixend,
int cursor,
bool start) {
try
{
HttpClient myHttpClient =
new HttpClient();
var urlstring =
"https://oapi.dingtalk.com/topapi/processinstance/listids?access_token=ACCESS_TOKEN";
urlstring = urlstring.Replace(
"ACCESS_TOKEN", access_token);
var content =
new FormUrlEncodedContent(
new Dictionary<
string,
string>
() {
{"process_code",
""},
{"start_time", },
{"end_time" ,},
{"size" ,
"10"},
{"cursor" ,)}
});
HttpResponseMessage response =
myHttpClient.PostAsync(urlstring, content).Result;
var jsonlist = response.Content.ReadAsAsync<
object>
().Result;
return jsonlist;
}
catch (Exception ex)
{
return e.Message; } }
三、时间戳与DateTime互转
/// <summary>
/// 将c# DateTime时间格式转换为Unix时间戳格式
/// </summary>
/// <param name="time"></param>
/// <returns></returns>
public long ConvertDateTimeInt(DateTime time)
{
DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(
new System.DateTime(
1970,
1,
1,
0,
0,
0,
0));
long t = (time.Ticks - startTime.Ticks) /
10000;
return t;
}
/// <summary>
/// c# Unix时间戳格式转换成DateTime
/// </summary>
/// <param name="d"></param>
/// <returns></returns>
public System.DateTime ConvertIntDateTime(
long d)
{
System.DateTime time =
System.DateTime.MinValue;
System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(
new System.DateTime(
1970,
1,
1));
time =
startTime.AddMilliseconds(d);
return time;
}
转载于:https://www.cnblogs.com/wufanJY/p/10630273.html
相关资源：C#利用post访问接口
