11.前端页面代码2/**3* 通过图片本地路径获取图片真实大小，并进行压缩4*/ 5function getLocalRealSize(path, callback) {6var img = new Image();7var tempimg = new Image();8 img.src = path;9 img.onload = function() {10var height = img.naturalHeight;11var width = img.naturalWidth;12 img.width = img.naturalWidth;13 img.height = img.naturalHeight;14//压缩图片 15var canvas = compressI...
[AcceptVerbs(HttpVerbs.Post)] public JsonResult Upload(HttpPostedFileBase fileData) { try { if (fileData != null) { string ext = Path.GetExtension(fileData.FileName).Remove(0, 1); // 文件扩展名 Image img = Image.FromStream(fileData.InputStream); Bitmap bmp = new Bitmap(img); ...
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Web;namespace FirsteLite.OMS.Helper
{///<summary>/// Summary description for ValidateCode.///</summary>publicstaticclass ValidateCodeHelper{///<summary>/// Validation Code generated fromt these charaters./// Note: l,L 1...
这个base64在requestHeader里面变成了base64=hySGNg22yX0AIjNQvNJw0xHEbi32NH%2BiRVKDkbOmUiKpxW0%2FS6rUgfLmSa527Y8zZ3GmEzfXMB8ry8fH5GjGeJFGqFxDC4A2hLlvIFzyiDeUCqloGDAJoOLa8Jnif1C8nwRte0GNCRM5RXkshLKZP2itZclgDCYz6OgAF7oLNluoB44cZ3AgF1Q8hVgME8LeqgOqxsIzTt3Xn%2B96j7zp%2FwA%3D他把base64里面一些/和= 给转成%2F之类的东西了。所以webservice接收到的参数是错的。。解决办法： string base64 = "base64=hySGNg22yX0AIjN...
编码：
byte[] bytes=Encoding.Default.GetBytes("要转换的字符串");
Convert.ToBase64String(bytes);
解码：
//"ztKwrsTj"是“我爱你”的base64编码
byte[] outputb = Convert.FromBase64String("ztKwrsTj");
string orgStr= Encoding.Default.GetString(outputb);原文：http://my.oschina.net/u/582827/blog/324404
MD5加密字符串并转化为base64(C#和PHP代码相同实现） -------PHP------代码-------------function Md5Base64($data){ $md5hex=md5($data); $len=strlen($md5hex)/2; $md5raw=""; for($i=0;$i<$len;$i++) { $md5raw=$md5raw . chr(hexdec(substr($md5hex,$i*2,2))); } $keyMd5=base64_encode($md5raw); return $keyMd5;} ---------C#=---------------------- public static string MD5ToBase64String(string str)...
图片当然是存在那个js文件里面，于是我就打开了flashblocker.js，然后浏览一下，找到下面一句： var flash = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAIAAAACACAYAA......' （小白）<SPAN style="FONT-SIZE: small">这是我第一次认识到base64的用场，记得以前保存网页的时候，总习惯保存为.mht格式，因为这样会把网页中的图片也保存下来，但是一直奇怪为何只有一</SPAN> view sourceprint?<SPAN style="FONT-SIZE: ...
一. Base64的编码规则 Base64编码的思想是是采用64个基本的ASCII码字符对数据进行重新编码。它将需要编码的数据拆分成字节数组。以3个字节为一组。按顺序排列24 位数据，再把这24位数据分成4组，即每组6位。再在每组的的最高位前补两个0凑足一个字节。这样就把一个3字节为一组的数据重新编码成了4个字节。当所要编码的数据的字节数不是3的整倍数，也就是说在分组时最后一组不够3个字节。这时在最后一组填充1到2个0字节。并在...
一、文本与Base64
1、文本转Base64字符串private static string StrToBase64(string str){byte[] b = Encoding.Default.GetBytes(str);//转成 Base64 形式的 System.String str = Convert.ToBase64String(b);return str;}2、Base64字符串转文本private static string Base64ToStr(string str){byte[] c = Convert.FromBase64String(str);string xx = Encoding.Default.GetString(c);//或者//string xx =System.Text.Encoding.UTF8...
base64.js/*
支持中英文，需引用jquery
加密：$.base64.encode
解密：$.base64.decode
*/
jQuery.base64 = (function ($) {var _PADCHAR = "=",_ALPHA = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",_VERSION = "1.1"; //Mr. Ruan fix to 1.1 to support asian char(utf8)function _getbyte64(s, i) {// This is oddly fast, except on Chrome/V8.// Minimal or no improvement in performance by using ...
using ThoughtWorks.QRCode.Codec; public static string GetQrCodeImage(){//二维码生成对象，需引用DLLQRCodeEncoder qrCodeEncoder = new QRCodeEncoder();qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;qrCodeEncoder.QRCodeVersion = 0;//版本控制，根据dll的版本，不同版本支持的二维码内容存储的长度不同qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;string data = string...
做一下字符串替换以及PadRight操作就可以了：string payloadstr = "eyJpZCI6MTMwNzkyNzA3NjUwNjE0MDY3MywiYWNjb3VudCI6InRlc3QiLCJ1c2VyS2V5IjoiMTIzIiwic3ViIjoiMTMwNzkyNzA3NjUwNjE0MDY3MyIsImlhdCI6MTYwMDY3OTM3OCwiZXhwIjoxNjAwNzY1Nzc4fQ";
string dummyData = payloadstr.Trim().Replace("%", "").Replace(",", "").Replace(" ", "+");
if (dummyData.Length % 4 > 0)
{dummyData = dummyData.PadRight(dummyData.Length + 4...
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Web;namespace FirsteLite.OMS.Helper
{/// <summary>/// Summary description for ValidateCode./// </summary>public static class ValidateCodeHelper{/// <summary>/// Validation Code generated fromt these charaters./// Note: ...
我有一个控制台应用程序,它将图像编码为base64String,然后将其作为http POST请求的一部分发送到服务器.
问题是,当我打开它检查服务器端时,数据不再存在.
这是我用来发送字符串的代码-HttpWebRequest webRequest = (HttpWebRequest)HttpWebRequest.Create(ip);
webRequest.ContentType = "application/x-www-form-urlencoded";
webRequest.Method = "POST";
string formPostString = "image=" + HttpUtility.UrlEncode(imageBase64S...
在我的C#应用??程序中,我将一个位图编码为从android应用程序发送来的base64字符串,然后将其解码并将其设置为等于字节数组.
我得到这个异常：“A first chance exception of type ‘System.FormatException’ occurred inmscorlib.dll”.Android Side：byte[] iconByteArray = null;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, baos); //Bitmap bitmap create...
