c# post文字图片至服务器

时间：2023-03-08 15:59:06
c# post文字图片至服务器

最近由于项目需要实现c#提交文字及数据至服务器，因此研究了一下c# php数据传送；

下面用一个示例来演示，c# post文字+图片 ，php端接收；

post提交数据核心代码（post数据提交）

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Drawing;
using System.Web;
using System.Net;
namespace postpic
{
    class postClass
    {
        /// <summary>
        /// 向服务器post文字和图片
        /// </summary>
        ///<param name="url">url
        ///<param name="userName">用户名
        ///<param name="userPwd">密码
        ///<param name="jpegPath">头像地址
        /// <returns>返回服务器返回值</returns>
        public string post(string url,string userName, string userPwd, string jpegPath)
        {
            //将图片转化为byte[]再转化为string
            string array = Convert.ToBase64String(imageToByteArray(jpegPath));
            //构造post提交字段
            string para = name=+userName+&pwd=+userPwd+&head=+HttpUtility.UrlEncode(array);
       
            #region HttpWebRequest写法
            HttpWebRequest httpWeb = (HttpWebRequest)WebRequest.Create(url);
            httpWeb.Timeout = 20000;
            httpWeb.Method = POST;
            httpWeb.ContentType = application/x-www-form-urlencoded;
            byte[] bytePara = Encoding.ASCII.GetBytes(para);
            using (Stream reqStream = httpWeb.GetRequestStream())
            {
                //提交数据
                reqStream.Write(bytePara, 0, para.Length);
            }
            //获取服务器返回值
            HttpWebResponse httpWebResponse = (HttpWebResponse)httpWeb.GetResponse();
            Stream stream = httpWebResponse.GetResponseStream();
            StreamReader streamReader = new StreamReader(stream, Encoding.GetEncoding(utf-8));
            //获得返回值
            string result = streamReader.ReadToEnd();
            stream.Close();
            #endregion
            //将服务器返回值返回
            return result;
        }
        /// <summary>
        /// 图片转为Byte字节数组
        /// </summary>
        ///<param name="FilePath">路径
        /// <returns>字节数组</returns>
        private byte[] imageToByteArray(string FilePath)
        {
            using (MemoryStream ms = new MemoryStream())
            {
                using (Image imageIn = Image.FromFile(FilePath))
                {
                    using (Bitmap bmp = new Bitmap(imageIn))
                    {
                        bmp.Save(ms, imageIn.RawFormat);
                    }
                }
                return ms.ToArray();
            }
        }
    }
     
}

一、c#客户端

为了方便说明，我直接简化了，一个提交按钮就好了。

c# post文字图片至服务器

二、需要提交的图片

该图片存放在俺的E盘根目录下面~~~~~（贴吧随便抓的一张图片）

path = @E:head.jpg;

c# post文字图片至服务器

三、php服务端

接收图片后存放至，path = @C:Loginlog;

附录：

c#端代码：

c#界面简单代码~~~~~（该代码可略过~~~~~）

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace postpic
{
    public partial class postFrom : Form
    {
        public postFrom()
        {
            InitializeComponent();
        }
        /// <summary>
        /// 提交按钮，提交post数据
        /// </summary>
        ///<param name="sender">
        ///<param name="e">
        private void btnpost_Click(object sender, EventArgs e)
        {
            //postClass为数据提交类
            postClass ps = new postClass();
            string url = @http://localhost/login.php;
            string name = DooZn;
            string pwd = a12345;
            string jpegPath = @E:head.jpg;
            //提交数据
            string value = ps.post(url,name,pwd,jpegPath);
            //value为服务器返回值
            if (value.Contains(1))
            {
                MessageBox.Show(登陆成功.);
            }
            else if (value.Contains(0))
            {
                MessageBox.Show(登陆失败.);
            }
            else
            {
                MessageBox.Show(未知错误.);
            }
        }
    }
}

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