init project

QRCodeService/Controllers/PlaygroundController.cs

@@ -0,0 +1,35 @@
+using Base62;
+using Microsoft.AspNetCore.Mvc;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace QRCodeService.Controllers
+{
+    [Route("[controller]/[action]")]
+    public class PlaygroundController:ControllerBase
+    {
+        public IActionResult GenShortCode(string url)
+        {
+            var codes = new string[2];
+            using (var md5 = MD5.Create())
+            {
+                var chunkSize = 8;
+                var result = md5.ComputeHash(Encoding.UTF8.GetBytes(url));
+                for (int i = 0; i < 2; i++)
+                {
+                    var first = result.Take(chunkSize).ToArray();
+                    //即超过30位的忽略处理
+                    var res = BitConverter.ToInt64(first);
+                    var code = res.ToBase62();
+                    codes[i] = code;
+                    result = result.Skip(chunkSize).ToArray();
+                }
+                return Ok(codes);
+            }
+        } 
+    }
+}