欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页

C#版有道词典

程序员文章站 2022-06-02 20:28:05
...

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:

C#版有道词典

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("</span>");
                    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("</span>");
                    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("</div>");

                container = container.Substring(0, posdiv - 3);// 获取结果,以第一个"</div>"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("<li>", "");
                   container = container.Replace("</li>", "");
                   container = container.Replace("<ul>", "");
                   container = container.Replace("</ul>", "");      
                   container = container.Replace("\n", "\r\n");
   
                   textBox1.Text =phone+"\r\n     "  + container.Trim();
                   //MessageBox.Show("no add");
                   return; //end
                }
               int p_ul = container.IndexOf("</ul>");
               string part1 = container.Substring(0, p_ul );
               part1 = part1.Replace("<li>", "");
               part1 = part1.Replace("</li>", "");
               part1 = part1.Replace("<ul>", "");
               part1 = part1.Replace("</ul>", "");
               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("<li>", "");
                strout = strout.Replace("</li>", "");
                strout = strout.Replace("<ul>", "");
                strout = strout.Replace("</ul>", "");
                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("</a>");
                    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);
            }
        }

    }
}



相关标签: 有道词典