Asp.NET调用百度翻译的方法

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本文实例讲述了Asp.NET调用百度翻译的方法。分享给大家供大家参考。具体分析如下：

Asp.NET调用百度翻译，如下图所示：

HTML代码如下:

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

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">  

<html xmlns="http://www.w3.org/1999/xhtml">  

<head runat="server">  

    <title>OA翻译</title>  

</head>  

<body>  

    <form id="form1" runat="server">  

    <div>  

        <asp:TextBox ID="sourceWord" runat="server" Columns="50" Rows="15" style="width:100%;"  

            TextMode="MultiLine"></asp:TextBox>  

        <br />  

        源语言：<asp:DropDownList ID="ddlFrom" runat="server">  

            <asp:ListItem Value="auto">自动检测</asp:ListItem>  

            <asp:ListItem Value="zh">中文</asp:ListItem>  

            <asp:ListItem Value="en">英文</asp:ListItem>  

            <asp:ListItem Value="jp">日文</asp:ListItem>  

        </asp:DropDownList>  

        目标语言：<asp:DropDownList ID="ddlTo" runat="server">  

            <asp:ListItem Value="auto">自动检测</asp:ListItem>  

            <asp:ListItem Value="zh">中文</asp:ListItem>  

            <asp:ListItem Value="en">英文</asp:ListItem>  

            <asp:ListItem Value="jp">日文</asp:ListItem>  

        </asp:DropDownList>  

        <asp:Button ID="Translate"  

            runat="server" Text="翻译" onclick="Translate_Click" />  

        <br />  

        <asp:TextBox ID="resultText" runat="server" TextMode="MultiLine" Rows="15" Columns="50" style="width:100%;"></asp:TextBox>  

    </div>  

    </form>  

</body>  

</html>

C#代码如下:

复制代码代码如下:

using System;  

using System.Collections.Generic;  

using System.IO;  

using System.Net;  

using System.Runtime.Serialization;  

using System.Runtime.Serialization.Json;  

using System.Text;  

using System.Web;  

public partial class FanYi_baidu : System.Web.UI.Page  

{  

    string url = @"http://openapi.baidu.com/public/2.0/bmt/translate";  

    string requestDetail = "client_id=申请的ID";  

    protected void Page_Load(object sender, EventArgs e)  

    {  

    }  

    [DataContract]  

    public class AdmAccessToken  

    {  

        [DataMember]  

        public string from { get; set; }  

        [DataMember]  

        public string to { get; set; }  

        [DataMember]  

        public string error_code { get; set; }  

        [DataMember]  

        public string error_msg { get; set; }  

        [DataMember]  

        public string query { get; set; }  

        [DataMember]  

        public List<TokenResult> trans_result { get; set; }  

    }  

    [DataContract]  

    public class TokenResult  

    {  

        [DataMember]  

        public string src { get; set; }  

        [DataMember]  

        public string dst { get; set; }  

    }  

    //百度翻译返回数据结构  

    //{  

    //"from": "en",  

    //"to": "zh",  

    //"trans_result": [  

    //    {  

    //        "src": "today",  

    //        "dst": "今天"  

    //    },  

    //    {  

    //        "src": "tomorrow",  

    //        "dst": "明天"  

    //    }  

    //],  

    //"error_code": "52001",  

    //"error_msg": "TIMEOUT",  

    //"query": "he's"  

    //}  

    /// <summary>  

    /// 采用Post方式提交数据  

    /// </summary>  

    /// <param name="DatamarketAccessUri">目标网址</param>  

    /// <param name="requestDetails">参数字符串</param>  

    /// <returns></returns>  

    private AdmAccessToken HttpPost(string DatamarketAccessUri, string requestDetails)  

    {  

        //Prepare OAuth request   

        WebRequest webRequest = WebRequest.Create(DatamarketAccessUri);  

        webRequest.ContentType = "application/x-www-form-urlencoded";  

        webRequest.Method = "POST";  

        byte[] bytes = Encoding.ASCII.GetBytes(requestDetails);  

        webRequest.ContentLength = bytes.Length;  

        using (Stream outputStream = webRequest.GetRequestStream())  

        {  

            outputStream.Write(bytes, 0, bytes.Length);  

        }  

        using (WebResponse webResponse = webRequest.GetResponse())  

        {  

            DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(AdmAccessToken));  

            //Get deserialized object from JSON stream  

            AdmAccessToken token = (AdmAccessToken)serializer.ReadObject(webResponse.GetResponseStream());  

            return token;  

        }  

    }  

    protected void Translate_Click(object sender, EventArgs e)  

    {  

        resultText.Text = "";  

        if (sourceWord.Text.Trim() != "")  

        {  

            string requestStr = requestDetail + "&from=" + ddlFrom.SelectedValue  

                + "&to=" + ddlTo.SelectedValue  

                + "&q=" + HttpUtility.UrlEncode(sourceWord.Text);  

            AdmAccessToken token = HttpPost(url, requestStr);  

            if (token.error_code != null)  

            {  

                resultText.Text = token.error_msg;  

            }  

            else  

            {  

                int n = token.trans_result.Count;  

                for (int i = 0; i < n; i++)  

                {  

                    resultText.Text += token.trans_result[i].dst + (i < n-1 ? "\n" : "");  

                }  

            }  

        }  

        else  

        {  

            resultText.Text = "请输入要翻译的内容";  

        }  

    }  

}