C#底层库–网络通信帮助类HTTP
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文章目录
- 系列文章
- 前言
- 一、底层库介绍
- 二、底层库源码
- 三、调用方法
- 四、运行效果
前言
文将新增一个专栏–底层库，分享编程过程中常用的方法函数。我们将这些常用的方法函数，进行封装，反复测试，形成通用化类库。
方便研发人员，只需要几行代码就可以使用它，解决一些难点问题。
底层库的封装涉及到：数据库操作、加解密算法、日志记录、网络通信、邮件发送、文件操作、参数保存、Excel导入导出等等，持续关注本专栏吧。大家有任何问题，也可以评论区反馈，私信我。
一、底层库介绍
网络访问帮助类，采用HTTP方式访问服务端，包含get、post、put、delete。
二、底层库源码
创建类HttpHelper.cs，复制以下代码
using System;
using System.IO;
using System.Net;
using System.Text;
namespace QRCodeProduce.BLL
{
public class HttpHelper
{
/// <summary>
/// Get方法
/// </summary>
/// <param name="a_ParamData">?a_fileName=20220908-2.apk</param>
/// <param name="Url">url</param>
/// <returns></returns>
public static string HttpGet(string Url, string a_ParamData)
{
try
{
byte[] byteArray = Encoding.UTF8.GetBytes(a_ParamData);
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(Url);
webRequest.Method = "GET";
webRequest.Accept = "application/json, text/javascript, */*"; // 出错就删掉
webRequest.ContentType = "application/json; charset=utf-8";
webRequest.ContentLength = byteArray.Length;
HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse();
using (StreamReader sr = new StreamReader(webResponse.GetResponseStream(), Encoding.UTF8))
{
return sr.ReadToEnd(); // 返回的数据
}
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
/// <summary>
/// Post请求
/// </summary>
/// <param name="url"></param>
/// <param name="body">{ "no": "A28A1MW43C"}</param>
/// <returns></returns>
public static string HttpPost(string url, string body)
{
try
{
byte[] byteArray = Encoding.UTF8.GetBytes(body);
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(url);
webRequest.Method = "POST";
webRequest.Accept = "application/json, text/javascript, */*";
webRequest.ContentType = "application/json; charset=utf-8";
webRequest.ContentLength = byteArray.Length;
webRequest.GetRequestStream().Write(byteArray, 0, byteArray.Length);
HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse();
using (StreamReader sr = new StreamReader(webResponse.GetResponseStream(), Encoding.UTF8))
{
return sr.ReadToEnd();
}
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
/// <summary>
/// Put请求
/// </summary>
/// <param name="url">URL</param>
/// <param name="body">application/json</param>
/// <returns></returns>
public static string HttpPut(string url, string body)
{
try
{
byte[] byteArray = Encoding.UTF8.GetBytes(body);
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(url);
webRequest.Method = "PUT";
webRequest.Accept = "application/json, text/javascript, */*";
webRequest.ContentType = "application/json";
webRequest.ContentLength = byteArray.Length;
webRequest.GetRequestStream().Write(byteArray, 0, byteArray.Length);
HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse();
using (StreamReader sr = new StreamReader(webResponse.GetResponseStream(), Encoding.UTF8))
{
return sr.ReadToEnd();
}
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
/// <summary>
/// Delete请求
/// </summary>
/// <param name="url">URL</param>
/// <param name="body">application/json</param>
/// <returns></returns>
public static string HttpDelete(string url, string body)
{
try
{
byte[] byteArray = Encoding.UTF8.GetBytes(body);
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(url);
webRequest.Method = "DELETE";
webRequest.Accept = "application/json, text/javascript, */*";
webRequest.ContentType = "application/json";
webRequest.ContentLength = byteArray.Length;
webRequest.GetRequestStream().Write(byteArray, 0, byteArray.Length);
HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse();
using (StreamReader sr = new StreamReader(webResponse.GetResponseStream(), Encoding.UTF8))
{
return sr.ReadToEnd();
}
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
}
}
三、调用方法
我这里是写了一个button按钮，扫码获得编号，然后点击读取标签，直接可以获得数据。
private void BTN_Scan_Click(object sender, EventArgs e)
{
ScanModel model = new ScanModel
{
no = baseDataInput_原料编号.StringValue
};
string l_strYuanLiaoBianhao = JsonConvert.SerializeObject(model);
string l_strReturn = HttpHelper.HttpPost(string.Format(Const.ct_strScanHSLabel, AppConfig.GetValue("db_server")), l_strYuanLiaoBianhao);
ActionResult Result = JsonConvert.DeserializeObject<ActionResult>(l_strReturn);
if (Result.RetInfo.IsSUCD)
{
Dictionary<string, string> dicResult = new Dictionary<string, string>();
dicResult.Clear();
JObject jo1 = (JObject)JsonConvert.DeserializeObject(Result.Data.Obj.ToString());//JSON反序列化
foreach (var item in jo1)
{
dicResult.Add(item.Key, item.Value.ToString());
}
baseDataInput_原料规格.StringValue = dicResult["黄丝规格"];
baseDataInput_原料强度.StringValue = dicResult["强度代号"];
baseDataInput_黄丝厂家.StringValue = dicResult["黄丝厂家"];
baseDataInput_黄丝代码.StringValue = dicResult["黄丝代码"];
baseDataInput_doff.StringValue = dicResult["doff"];
}
else
{
XtraMessageBox.Show(Result.RetInfo.ErrorCode + ":" + Result.RetInfo.ErrorMsg,
"错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
数据结构ScanModel.cs
public class ScanModel
{
public string no { get; set; }
}
四、运行效果
PC连接扫码枪，扫描一维码、二维码标签，自动复制“原料编号”，点击“读标”按钮自动获取标签信息。
