词频统计（WEB）版

需求：

　　　在以前的基础上把程序迁移到web平台，通过用户上传TXT的方式接收文件。

前端页面代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
        <h4>词频统计器
            </h4>
    <div>
        <p>
            请选择文件：<asp:FileUpload ID="FileUpload1" runat="server" />
        </p>
        <p>
            <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" style="height: 21px; width: 62px" Text="查询" />
        </p>
    </div>
        <div>

            <asp:TextBox ID="TextBox1" runat="server" Height="300px" TextMode="MultiLine" Width="326px" Enabled="False"></asp:TextBox>

        </div>
    </form>
</body>
</html>

　　页面显示：

后台管理代码：

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Text;
using System.Collections.Generic;
using System.IO;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        if (FileUpload1.HasFiles)
        {
            int n = 0;
            string strfile = FileUpload1.PostedFile.FileName;
            string strout;
            StreamReader sr = File.OpenText(strfile);
            String input = sr.ReadToEnd();
            sr.Close();
            //Response.Write(input);
            char[] text = input.ToCharArray();
            Dictionary<string, int> map = new Dictionary<string, int>();
            for (int i = 0; i < text.Length; i++)
            {
                string s = "";
                while (i < text.Length && ((text[i] >= ‘a‘ && text[i] <= ‘z‘) || (text[i] >= ‘A‘ && text[i] <= ‘Z‘) || text[i] == ‘-‘))
                {
                    if (text[i] >= ‘A‘ && text[i] <= ‘Z‘)
                        s += (text[i] + 32);
                    else
                        s += text[i];
                    i++;
                }
                if (!map.ContainsKey(s))
                {
                    if (s == "") continue;
                    n++;
                    map.Add(s, 1);
                }
                else
                {
                    map[s]++;
                }
            }
            strout = "";
            strout = "单次总数为:" + n.ToString() + "\n";
            List<KeyValuePair<string, int>> myList = new List<KeyValuePair<string, int>>(map);
            myList.Sort(delegate (KeyValuePair<string, int> s1, KeyValuePair<string, int> s2)
            {
                return s2.Value.CompareTo(s1.Value);
            });
            map.Clear();

            foreach (KeyValuePair<string, int> pair in myList)
            {
                strout = strout + pair.Key + " " + pair.Value + "\n";
                //dic.Add(pair.Key, pair.Value);

            }

            TextBox1.Text = strout;

        }
    }
}

　　运行结果：

HTTPS:https://git.coding.net/ziyoujay/cipintongji_WEB.git

SSH:[email protected]:ziyoujay/cipintongji_WEB.git