CommonClass.cs

using System.Collections.Generic;
using System.Data;
using System.Security.Cryptography;
using System.Text;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Http.Features;
using Microsoft.AspNetCore.Mvc.Controllers;
using Zircon.Base.Exceptions;

namespace PdfExportOpri.Common
{
    public class CommonClass
    {
        public static Dictionary<string, object> DataRowToDictioniary(DataRow row)
        {
            Dictionary<string, object> dic = new Dictionary<string, object>();
            for (int i = 0; i < row.ItemArray.Length; i++)
            {
                dic.Add(row.Table.Columns[i].ColumnName, row[i]);
            }

            return dic;
        }

        public static string Md5(string content)
        {
            //MD5类是抽象类
            MD5 md5 = MD5.Create();
            //需要将字符串转成字节数组
            byte[] buffer = Encoding.Default.GetBytes(content);
            //加密后是一个字节类型的数组，这里要注意编码UTF8/Unicode等的选择
            byte[] md5buffer = md5.ComputeHash(buffer);
            string str = null;
            // 通过使用循环，将字节类型的数组转换为字符串，此字符串是常规字符格式化所得
            foreach (byte b in md5buffer)
            {
                //得到的字符串使用十六进制类型格式。格式后的字符是小写的字母，如果使用大写（X）则格式后的字符是大写字符 
                //但是在和对方测试过程中，发现我这边的MD5加密编码，经常出现少一位或几位的问题；
                //后来分析发现是 字符串格式符的问题， X 表示大写， x 表示小写， 
                //X2和x2表示不省略首位为0的十六进制数字；
                str += b.ToString("x2");
            }
            return str;
        }

        public static string GetRequest(HttpContext context, string key, object defaultValue, bool isRequired = false)
        {
            var endpoint = context.Features.Get<IEndpointFeature>()?.Endpoint; ;
            var methodInfo = context.GetEndpoint()?.Metadata.GetMetadata<ControllerActionDescriptor>().MethodInfo;
            string method = context.Request.Method.ToUpper();
            if (method == "POST" || method == "PUT" || method == "PATCH")
            {
                if (context.Request.HasFormContentType && context.Request.Form.ContainsKey(key)) return context.Request.Form[key].ToString();
            }
            else
            {
                if (context.Request.Query.ContainsKey(key)) return context.Request.Query[key].ToString();
            }

            if (isRequired) throw new ClientException();
            return defaultValue.ToString();
        }
    }
}