通过点击浏览按钮输入文件：
点击查询按钮后返回结果：
前台代码：
1 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> 2 3 <!DOCTYPE html> 4 5 <html xmlns="http://www.w3.org/1999/xhtml"> 6 <head runat="server"> 7 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> 8 <title></title> 9 </head> 10 <body> 11 <form id="form1" runat="server"> 12 <h4>词频统计器 13 </h4> 14 <div> 15 <p> 16 请选择文件：<asp:FileUpload ID="FileUpload1" runat="server" /> 17 </p> 18 <p> 19 <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" style="height: 21px; width: 62px" Text="查询" /> 20 </p> 21 </div> 22 <div> 23 24 <asp:TextBox ID="TextBox1" runat="server" Height="300px" TextMode="MultiLine" Width="326px" Enabled="False"></asp:TextBox> 25 26 </div> 27 </form> 28 </body> 29 </html>
后台代码:
1 using System;
2 using System.Collections;
3 using System.Configuration;
4 using System.Data;
5 using System.Linq;
6 using System.Web;
7 using System.Web.Security;
8 using System.Web.UI;
9 using System.Web.UI.HtmlControls;
10 using System.Web.UI.WebControls;
11 using System.Web.UI.WebControls.WebParts;
12 using System.Xml.Linq;
13 using System.Text;
14 using System.Collections.Generic;
15 using System.IO;
16
17 public partial class _Default : System.Web.UI.Page
18 {
19 protected void Page_Load(object sender, EventArgs e)
20 {
21 }
22
23 protected void Button1_Click(object sender, EventArgs e)
24 {
25 if(FileUpload1.HasFiles)
26 {
27 int n=0;
28 string strfile = FileUpload1.PostedFile.FileName;
29 string strout;
30 StreamReader sr = File.OpenText(strfile);
31 String input = sr.ReadToEnd();
32 sr.Close();
33 //Response.Write(input);
34 char [] text = input.ToCharArray();
35 Dictionary<string, int> map = new Dictionary<string, int>();
36 for(int i=0;i<text.Length;i++)
37 {
38 string s = "";
39 while (i< text.Length&&((text[i] >= ‘a‘ && text[i] <= ‘z‘) || (text[i] >= ‘A‘ && text[i] <= ‘Z‘) || text[i] == ‘-‘))
40 {
41 if (text[i] >= ‘A‘ && text[i] <= ‘Z‘)
42 s += (text[i] + 32);
43 else
44 s += text[i];
45 i++;
46 }
47 if (!map.ContainsKey(s))
48 {
49 if (s == "") continue;
50 n++;
51 map.Add(s, 1);
52 }
53 else
54 {
55 map[s]++;
56 }
57 }
58 strout = "";
59 strout = "单次总数为:" + n.ToString() + "\n";
60 List<KeyValuePair<string, int>> myList = new List<KeyValuePair<string, int>>(map);
61 myList.Sort(delegate (KeyValuePair<string, int> s1, KeyValuePair<string, int> s2)
62 {
63 return s2.Value.CompareTo(s1.Value);
64 });
65 map.Clear();
66
67 foreach (KeyValuePair<string, int> pair in myList)
68 {
69 strout = strout + pair.Key + " " + pair.Value + "\n";
70 //dic.Add(pair.Key, pair.Value);
71
72 }
73
74
75
76 TextBox1.Text = strout;
77
78 }
79 }
80 }
时间： 2024-08-13 01:17:55