C#版有道词典-白红宇

C#版有道词典

阅读量：4098 次

发布时间：2019-05-25

本文共 8988 字，大约阅读时间需要 29 分钟。

原理：通过C#获取要查词汇的网页数据，根据关键字截取需要的解释，并显示出来。

图形界面设计：

源码：

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;using System.Net;using System.IO;using System.Text.RegularExpressions;namespace WindowsForms{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void en_to_ch(object sender, EventArgs e)        {            try            {                textBox1.Text = "";                if (m_word.Text.Trim() == "")                {                    textBox1.Text = "     无结果";                    return;                }                WebClient MyWebClient = new WebClient();                MyWebClient.Credentials = CredentialCache.DefaultCredentials;//获取或设置用于向Internet资源的请求进行身份验证的网络凭据                string url = "http://dict.youdao.com/search?q=" + m_word.Text.Trim();                Byte[] pageData = MyWebClient.DownloadData(url); //从指定网站下载数据                //string pageHtml = Encoding.Default.GetString(pageData);  //如果获取网站页面采用的是GB2312，则使用这句                            //StreamReader sr = new System.IO.StreamReader(pageData, System.Text.Encoding.UTF8);                string pageHtml = Encoding.UTF8.GetString(pageData); //如果获取网站页面采用的是UTF-8，则使用这句                //using (StreamWriter sw = new StreamWriter("output1.html"))//将获取的内容写入文本                //{                //    sw.Write(pageHtml);                //}                //get pronounce                string pronstr = pageHtml;                int p1 = pronstr.IndexOf("\"phonetic\"");                string phone = "";                if (p1 > 0)                {                    pronstr = pronstr.Substring(p1 + 11);                    int p2 = pronstr.IndexOf("");                    if (p2 > 0)                    {                        phone = "     英：";                        phone += pronstr.Substring(0, p2) + "     ";                    }                   // MessageBox.Show(p1.ToString());                }               // else                // m_word.Text = p1.ToString();--内容结束--                p1 = pronstr.IndexOf("\"phonetic\"");                if (p1 > 0)                {                    pronstr = pronstr.Substring(p1 + 11);                    int p2 = pronstr.IndexOf("");                    if (p2 > 0)                        phone += "美：" + pronstr.Substring(0, p2) + "\r\n";                }                             int pos = pageHtml.IndexOf("class=\"trans-container\"");                if (pos == -1)                {                    textBox1.Text = "无结果";                    return;                }                int pauth = pageHtml.IndexOf("\"trans-container\" id=\"authDictTrans\"");                if (pauth > 0)                {                    int pend = pageHtml.IndexOf("--内容结束--");                    string sauth = pageHtml.Substring(pauth + 50, pend - pauth);                    while (true)                    {                        int pl = sauth.IndexOf("<");                        if (pl == -1)                            break;                        int pr = sauth.IndexOf(">");                        if (pr == -1)                            break;                        if (pl < pr)                            sauth = sauth.Remove(pl, pr - pl + 1);                        else                            break;                    }                    char[] sep = { '\r' };                    string[] arr1;                    arr1 = sauth.Split(sep);  //分解为数组                    sauth = "";                    foreach (string i in arr1)                    {                        sauth += "     " + i.Trim();                    }                    sauth = Regex.Replace(sauth, @"\s+", " ");                    sauth = sauth.Replace("。", "。\r\n");                    sauth = sauth.Replace(".", ".\r\n");                    sauth = sauth.Replace(",", ", ");                    sauth = sauth.Replace("，", "， ");                    textBox1.Text =   sauth.Trim();                    return;                }                string container = pageHtml.Substring(pos + 25);  //截取开始str                int posdiv = container.IndexOf("");                container = container.Substring(0, posdiv - 3);// 获取结果,以第一个""结尾                             int p_addit = container.IndexOf("class=\"additional\"");                //str=id="authDictTrans"《21世纪大英汉词典》                if (p_addit == -1)  //无附加解释                {                   container = container.Replace("", "");                   container = container.Replace("
", "");                   container = container.Replace("
   
    ", "");                   container = container.Replace("
   
", "");                         container = container.Replace("\n", "\r\n");                      textBox1.Text =phone+"\r\n     "  + container.Trim();                   //MessageBox.Show("no add");                   return; //end                }               int p_ul = container.IndexOf("");               string part1 = container.Substring(0, p_ul );               part1 = part1.Replace("", "");               part1 = part1.Replace("
", "");               part1 = part1.Replace("
   
    ", "");               part1 = part1.Replace("
   
", "");               part1 = part1.Replace("\n", "\r\n");               string part2 = container.Substring(p_addit + 20);  //附加解释                 part2 = part2.Replace("[", "");                part2 = part2.Replace("]", "");                // char[] sep = { '\r',' ' };                part2 = part2.Trim( );                char[] separator = { '\n' };                string []arr;                arr = part2.Split(separator);  //分解为数组                part2 = "";                int f = 0;                foreach (string i in arr)                {                    f++;                    part2 += "     " + i.Trim();                    if (f % 2 == 0)                        part2 = part2 + "\r\n";                }                part2 = part2.Substring(0, part2.Length - 4);                textBox1.Text =phone+"\r\n     "+ part1.Trim()+ "\r\n\r\n"+part2;            }            catch (WebException webEx)            {               textBox1.Text=webEx.Message.ToString();            }                }        private void ch_to_en(object sender, EventArgs e)        {            try            {                textBox1.Text = "";                if (m_word.Text.Trim() == "")                {                    textBox1.Text = "     无结果";                    return;                }                WebClient MyWebClient = new WebClient();                MyWebClient.Credentials = CredentialCache.DefaultCredentials;//获取或设置用于向Internet资源的请求进行身份验证的网络凭据                string url = "http://dict.youdao.com/search?q=" + m_word.Text.Trim();                Byte[] pageData = MyWebClient.DownloadData(url); //从指定网站下载数据                //string pageHtml = Encoding.Default.GetString(pageData);  //如果获取网站页面采用的是GB2312，则使用这句                            //StreamReader sr = new System.IO.StreamReader(pageData, System.Text.Encoding.UTF8);                string pageHtml = Encoding.UTF8.GetString(pageData); //如果获取网站页面采用的是UTF-8，则使用这句                int pos = pageHtml.IndexOf("class=\"trans-container\"");                string sub = pageHtml.Substring(pos + 25);                int pos1 = sub.IndexOf("div");                string strout = sub.Substring(0, pos1);                strout = strout.Replace("", "");                strout = strout.Replace("
", "");                strout = strout.Replace("
   
    ", "");                strout = strout.Replace("
   
", "");                string sout = "";                while (true)                {                    int site = strout.IndexOf("E2Ctranslation");                    Console.WriteLine("site ");//在控制台输入获取的内容                    Console.WriteLine(site);//在控制台输入获取的内容                    if (site == -1)                        break;                    int site2 = strout.IndexOf("");                    Console.WriteLine("site2 ");//在控制台输入获取的内容                    Console.WriteLine(site2);//在控制台输入获取的内容                    sout += strout.Substring(site + 16, site2 - site - 16) + "\r\n";                    strout = strout.Substring(site2 + 5);                }                textBox1.Text = sout;            }            catch (WebException webEx)            {                textBox1.Text = webEx.Message.ToString();            }        }                //焦点集中到输入框        private void Form1_Load(object sender, EventArgs e)        {            m_word.Focus();            m_word.Select();                     }        //需要在窗体上注册控件的键盘事件，把窗体的KeyPreview属性设置成 true；        //然后才能响应Enter        private void Form1_KeyPress(object sender, KeyPressEventArgs e)        {            if ((Keys)e.KeyChar == Keys.Enter)            {                en_to_ch(sender, e);            }        }    }}