v1.0.4
This commit is contained in:
454313500@qq.com
@@ -9,6 +9,7 @@
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<PackageReference Include="Castle.Core" Version="4.4.1" />
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<PackageReference Include="Microsoft.Extensions.Caching.Redis" Version="2.2.0" />
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<PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
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<PackageReference Include="System.Drawing.Common" Version="5.0.2" />
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</ItemGroup>
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</Project>
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76
CC.Yi.Common/HttpHelper.cs
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76
CC.Yi.Common/HttpHelper.cs
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Net;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Threading.Tasks;
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namespace CC.Yi.Common
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{
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public static class HttpHelper
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{
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public static string HttpGet(string Url, string postDataStr="")
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{
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HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url + (postDataStr == "" ? "" : "?") + postDataStr);
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request.Method = "GET";
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request.ContentType = "text/html;charset=UTF-8";
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HttpWebResponse response = (HttpWebResponse)request.GetResponse();
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Stream myResponseStream = response.GetResponseStream();
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StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
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string retString = myStreamReader.ReadToEnd();
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myStreamReader.Close();
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myResponseStream.Close();
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return retString;
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}
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public static bool HttpIOGet(string Url, string file, string postDataStr="")
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{
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HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url + (postDataStr == "" ? "" : "?") + postDataStr);
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request.Method = "GET";
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request.ContentType = "text/html;charset=UTF-8";
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HttpWebResponse response = (HttpWebResponse)request.GetResponse();
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Stream myResponseStream = response.GetResponseStream();
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FileStream writer = new FileStream(file, FileMode.OpenOrCreate, FileAccess.Write);
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byte[] buffer = new byte[1024];
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int c;
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while ((c = myResponseStream.Read(buffer, 0, buffer.Length)) > 0)
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{
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writer.Write(buffer, 0, c);
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}
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writer.Close();
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myResponseStream.Close();
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return true;
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}
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public static string HttpPost(string Url, string postDataStr="")
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{
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CookieContainer cookie = new CookieContainer();
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HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
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request.Method = "POST";
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request.ContentType = "application/x-www-form-urlencoded";
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request.ContentLength = Encoding.UTF8.GetByteCount(postDataStr);
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request.CookieContainer = cookie;
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Stream myRequestStream = request.GetRequestStream();
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StreamWriter myStreamWriter = new StreamWriter(myRequestStream, Encoding.GetEncoding("gb2312"));
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myStreamWriter.Write(postDataStr);
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myStreamWriter.Close();
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HttpWebResponse response = (HttpWebResponse)request.GetResponse();
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response.Cookies = cookie.GetCookies(response.ResponseUri);
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Stream myResponseStream = response.GetResponseStream();
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StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
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string retString = myStreamReader.ReadToEnd();
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myStreamReader.Close();
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myResponseStream.Close();
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return retString;
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}
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}
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}
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167
CC.Yi.Common/imageHelper.cs
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167
CC.Yi.Common/imageHelper.cs
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@@ -0,0 +1,167 @@
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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using System.IO;
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using System.IO.Compression;
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using System.Drawing;
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namespace CC.Yi.Common
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{
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public class SimilarPhoto
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{
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Image SourceImg;
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public SimilarPhoto(string filePath)
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{
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SourceImg = Image.FromFile(filePath);
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}
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public SimilarPhoto(Stream stream)
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{
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SourceImg = Image.FromStream(stream);
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}
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public String GetHash()
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{
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Image image = ReduceSize();
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Byte[] grayValues = ReduceColor(image);
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Byte average = CalcAverage(grayValues);
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String reslut = ComputeBits(grayValues, average);
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return reslut;
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}
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// Step 1 : Reduce size to 8*8
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private Image ReduceSize(int width = 8, int height = 8)
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{
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Image image = SourceImg.GetThumbnailImage(width, height, () => { return false; }, IntPtr.Zero);
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return image;
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}
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// Step 2 : Reduce Color
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private Byte[] ReduceColor(Image image)
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{
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Bitmap bitMap = new Bitmap(image);
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Byte[] grayValues = new Byte[image.Width * image.Height];
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for (int x = 0; x < image.Width; x++)
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for (int y = 0; y < image.Height; y++)
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{
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Color color = bitMap.GetPixel(x, y);
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byte grayValue = (byte)((color.R * 30 + color.G * 59 + color.B * 11) / 100);
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grayValues[x * image.Width + y] = grayValue;
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}
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return grayValues;
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}
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// Step 3 : Average the colors
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private Byte CalcAverage(byte[] values)
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{
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int sum = 0;
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for (int i = 0; i < values.Length; i++)
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sum += (int)values[i];
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return Convert.ToByte(sum / values.Length);
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}
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// Step 4 : Compute the bits
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private String ComputeBits(byte[] values, byte averageValue)
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{
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char[] result = new char[values.Length];
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for (int i = 0; i < values.Length; i++)
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{
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if (values[i] < averageValue)
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result[i] = '0';
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else
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result[i] = '1';
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}
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SourceImg.Dispose();
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return new String(result);
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}
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// Compare hash
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public static Int32 CalcSimilarDegree(string a, string b)
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{
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if (a.Length != b.Length)
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throw new ArgumentException();
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int count = 0;
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for (int i = 0; i < a.Length; i++)
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{
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if (a[i] != b[i])
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count++;
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}
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return count;
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}
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}
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public static class imageHelper
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{
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public static int Compare(string filePath1, string filePath2)
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{
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SimilarPhoto photo1 = new SimilarPhoto(filePath1);
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SimilarPhoto photo2 = new SimilarPhoto(filePath2);
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return SimilarPhoto.CalcSimilarDegree(photo1.GetHash(), photo2.GetHash());
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}
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public static bool ByStringToSave(string name, string iss)
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{
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iss = iss.Replace("data:image/png;base64,", "").Replace("data:image/jgp;base64,", "")
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.Replace("data:image/jpg;base64,", "").Replace("data:image/jpeg;base64,", "");
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byte[] arr = Convert.FromBase64String(iss);
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MemoryStream ms = new MemoryStream(arr);
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Bitmap bmp = new Bitmap(ms);
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string StudentWorkImages = "StudentWorkImages";
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if (Directory.Exists(@"./wwwroot/" + StudentWorkImages) == false)//如果不存在就创建file文件夹
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{
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Directory.CreateDirectory(@"./wwwroot/" + StudentWorkImages);
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}
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bmp.Save(@"./wwwroot/" + StudentWorkImages + "/" + name + ".jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
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ms.Close();
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return true;
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}
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public static bool CreateZip()
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{
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string file_path = @"./wwwroot/StudentWorkImages.zip";
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string file_path2 = @"./wwwroot/StudentWorkImages/";
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if (File.Exists(file_path))
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{
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File.Delete(file_path);
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}
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ZipFile.CreateFromDirectory(file_path2, file_path);
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return true;
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}
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public static bool DeleteAll()
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{
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string file_path = @"./wwwroot/StudentWorkImages/";
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if (Directory.Exists(file_path))
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{
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DelectDir(file_path);
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return true;
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}
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else
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return false;
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}
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public static bool DeleteByString(string name)
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{
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File.Delete(@"./wwwroot/StudentWorkImages/" + name + ".jpg");
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return true;
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}
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public static void DelectDir(string srcPath)
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{
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try
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{
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DirectoryInfo dir = new DirectoryInfo(srcPath);
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FileSystemInfo[] fileinfo = dir.GetFileSystemInfos(); //返回目录中所有文件和子目录
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foreach (FileSystemInfo i in fileinfo)
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{
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if (i is DirectoryInfo) //判断是否文件夹
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{
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DirectoryInfo subdir = new DirectoryInfo(i.FullName);
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subdir.Delete(true); //删除子目录和文件
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}
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else
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{
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File.Delete(i.FullName); //删除指定文件
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}
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}
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}
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catch (Exception e)
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{
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Console.Write(e.ToString());
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}
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}
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}
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}
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