csharp:百度翻译

参考:http://api.fanyi.baidu.com/api/trans/product/index

http://developer.baidu.com/wiki/index.php?title=%E5%B8%AE%E5%8A%A9%E6%96%87%E6%A1%A3%E9%A6%96%E9%A1%B5/%E7%99%BE%E5%BA%A6%E7%BF%BB%E8%AF%91API

winform:

    /// <summary>
    /// 涂聚文
    /// </summary>
    public partial class Form5 : Form
    {
        TranClass tranClass = new TranClass();
        string url = "";
        string youAPI_Id = "geovindu";
        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
        DataTable setLanguage()
        {

            DataTable dt = new DataTable();
            dt.Columns.Add("id", typeof(int));
            dt.Columns.Add("name", typeof(string));
            dt.Rows.Add(1, "中文--英文");
            dt.Rows.Add(2, "英文--中文");
            dt.Rows.Add(3, "中文--日文");
            dt.Rows.Add(4, "日文--中文");
            dt.Rows.Add(5, "中文--韩文");
            dt.Rows.Add(6, "韩文--中文");
            dt.Rows.Add(7, "西班牙文--中文");
            dt.Rows.Add(8, "中文--西班牙文");
            return dt;

        }
        /// <summary>
        /// 
        /// </summary>
        public Form5()
        {
            InitializeComponent();
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Form5_Load(object sender, EventArgs e)
        {
            this.cbxTranslateChange.DataSource = setLanguage();
            this.cbxTranslateChange.ValueMember = "id";
            this.cbxTranslateChange.DisplayMember = "name";


        }
        /// <summary>
        /// 翻译
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button1_Click(object sender, EventArgs e)
        {
            WebClient client = new WebClient();  //引用System.Net
            string fromTranslate = tbxFromContent.Text; //翻译前的内容
            if (!string.IsNullOrEmpty(fromTranslate))
            {
                //client_id为自己的api_id，q为翻译对象，from为翻译语言，to为翻译后语言
                string url = string.Format("http://openapi.baidu.com/public/2.0/bmt/translate?client_id={0}&q={1}&from={2}&to={3}", youAPI_Id, fromTranslate, tranClass.From, tranClass.To);
                var buffer = client.DownloadData(url);
                string result = Encoding.UTF8.GetString(buffer);
                StringReader sr = new StringReader(result);
                JsonTextReader jsonReader = new JsonTextReader(sr); //引用Newtonsoft.Json 自带
                JsonSerializer serializer = new JsonSerializer();
                var r = serializer.Deserialize<TranClass>(jsonReader); //因为获取后的为json对象 ，实行转换
                tbxToContent.Text = r.Trans_result[0].dst;  //dst为翻译后的值
            }
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void cbxTranslateChange_SelectedIndexChanged(object sender, EventArgs e)
        {
            ComboBox comboBox = sender as ComboBox;
            switch (comboBox.SelectedIndex)
            {
                case 1:
                    tranClass.From = "zh";
                    tranClass.To = "en";
                    break;
                case 2:
                    tranClass.From = "en";
                    tranClass.To = "zh";
                    break;
                case 3:
                    tranClass.From = "zh";
                    tranClass.To = "jp";
                    break;
                case 4:
                    tranClass.From = "jp";
                    tranClass.To = "zh";
                    break;
                case 5:
                    tranClass.From = "zh";
                    tranClass.To = "kor";
                    break;
                case 6:
                    tranClass.From = "kor";
                    tranClass.To = "zh";
                    break;
                case 7:
                    tranClass.From = "zh";
                    tranClass.To = "spa";
                    break;
                case 8:
                    tranClass.From = "spa";
                    tranClass.To = "zh";
                    break;
                default:
                    tranClass.From = "auto";
                    tranClass.To = "auto";
                    break;

            }
        }




    }


    public class TranClass
    {
        public string From { get; set; }
        public string To { get; set; }
        public List<Trans_result> Trans_result { get; set; }
    }
    public class Trans_result
    {
        public string src { get; set; }
        public string dst { get; set; }
    }

    /*
     
     语言简写	名称
auto	自动检测
zh	中文
en	英语
yue	粤语
wyw	文言文
jp	日语
kor	韩语
fra	法语
spa	西班牙语
th	泰语
ara	阿拉伯语
ru	俄语
pt	葡萄牙语
de	德语
it	意大利语
el	希腊语
nl	荷兰语
pl	波兰语
bul	保加利亚语
est	爱沙尼亚语
dan	丹麦语
fin	芬兰语
cs	捷克语
rom	罗马尼亚语
slo	斯洛文尼亚语
swe	瑞典语
hu	匈牙利语
cht	繁体中文
     */
}

　　

webform:

 TranClass tranClass = new TranClass();
        string url = "www.dusystem.com";
        string youAPI_Id = "geovindu";
        /// <summary>
        /// 涂聚文
        /// </summary>
        /// <returns></returns>
        DataTable setLanguage()
        {

            DataTable dt = new DataTable();
            dt.Columns.Add("id", typeof(int));
            dt.Columns.Add("name", typeof(string));
            dt.Rows.Add(1, "中文--英文");
            dt.Rows.Add(2, "英文--中文");
            dt.Rows.Add(3, "中文--日文");
            dt.Rows.Add(4, "日文--中文");
            dt.Rows.Add(5, "中文--韩文");
            dt.Rows.Add(6, "韩文--中文");
            dt.Rows.Add(7, "西班牙文--中文");
            dt.Rows.Add(8, "中文--西班牙文");
            return dt;

        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                this.DropDownList1.DataSource = setLanguage();
                this.DropDownList1.DataTextField = "name";
                this.DropDownList1.DataValueField = "id";
                this.DropDownList1.DataBind();
                //DropDownList1.SelectedIndex = 0;
            }
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Button1_Click(object sender, EventArgs e)
        {
            int k = int.Parse(DropDownList1.SelectedValue);
            switch (k)
            {
                case 1:
                    tranClass.From = "zh";
                    tranClass.To = "en";
                    break;
                case 2:
                    tranClass.From = "en";
                    tranClass.To = "zh";
                    break;
                case 3:
                    tranClass.From = "zh";
                    tranClass.To = "jp";
                    break;
                case 4:
                    tranClass.From = "jp";
                    tranClass.To = "zh";
                    break;
                case 5:
                    tranClass.From = "zh";
                    tranClass.To = "kor";
                    break;
                case 6:
                    tranClass.From = "kor";
                    tranClass.To = "zh";
                    break;
                case 7:
                    tranClass.From = "zh";
                    tranClass.To = "spa";
                    break;
                case 8:
                    tranClass.From = "spa";
                    tranClass.To = "zh";
                    break;
                default:
                    tranClass.From = "auto";
                    tranClass.To = "auto";
                    break;


            }


            WebClient client = new WebClient();  //引用System.Net
            string fromTranslate = this.TextBox1.Text; //翻译前的内容


            if (object.Equals(tranClass, null))
            {
                tranClass.From = "zh";
                tranClass.To = "en";
            }

            if (!string.IsNullOrEmpty(fromTranslate))
            {
                //client_id为自己的api_id，q为翻译对象，from为翻译语言，to为翻译后语言
                string url = string.Format("http://openapi.baidu.com/public/2.0/bmt/translate?client_id={0}&q={1}&from={2}&to={3}", youAPI_Id, fromTranslate, tranClass.From, tranClass.To);
                var buffer = client.DownloadData(url);
                string result = Encoding.UTF8.GetString(buffer);
                StringReader sr = new StringReader(result);
                JsonTextReader jsonReader = new JsonTextReader(sr); //引用Newtonsoft.Json 自带
                while (jsonReader.Read())
                {
                    //Response.Write(jsonReader.Value.ToString() + "<br/>");//jsonReader.TokenType.ToString() + "" + jsonReader.ValueType.ToString() + "" + 
                }
                Response.Write(CallInterface(fromTranslate, tranClass.From, tranClass.To));
                var j = JsonConvert.DeserializeObject<TranClass>(result);

                //JsonSerializer serializer = new JsonSerializer();

                //TranClass p1 = (TranClass)serializer.Deserialize(new JsonTextReader(sr), typeof(TranClass));
                //TranClass r = serializer.Deserialize<TranClass>(jsonReader); //因为获取后的为json对象 ，实行转换  反序列化 错误
                //this.TextBox2.Text = r.Trans_result[0].dst;  //dst为翻译后的值
                if (!object.Equals(j, null))
                {
                    this.TextBox2.Text = j.Trans_result[0].dst;
                }
            }
        }
        
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
        {
            
            switch (DropDownList1.SelectedIndex)
            {
                case 0:
                    tranClass.From = "zh";
                    tranClass.To = "en";
                    break;
                case 1:
                    tranClass.From = "en";
                    tranClass.To = "zh";
                    break;
                case 2:
                    tranClass.From = "zh";
                    tranClass.To = "jp";
                    break;
                case 3:
                    tranClass.From = "jp";
                    tranClass.To = "zh";
                    break;
                case 4:
                    tranClass.From = "zh";
                    tranClass.To = "kor";
                    break;
                case 5:
                    tranClass.From = "kor";
                    tranClass.To = "zh";
                    break;
                case 6:
                    tranClass.From = "zh";
                    tranClass.To = "spa";
                    break;
                case 7:
                    tranClass.From = "spa";
                    tranClass.To = "zh";
                    break;
                default:
                    tranClass.From = "auto";
                    tranClass.To = "auto";
                    break;

            }
        }
        /// <summary>
        /// 请求百度接口
        /// 
        /// https://github.com/lbv/litjson
        /// </summary>
        /// <param name="sub">要翻译的文本</param>
        /// <param name="from">from语言</param>
        /// <param name="to">翻译为语言</param>
        /// <returns></returns>
        private string CallInterface(string sub, string from, string to)
        {

            HttpContext.Current.Application.Lock();
            if (HttpContext.Current.Application["baidu"] == null)
            {
                HttpContext.Current.Application["baidu"] = 1;
            }
            else
            {
                HttpContext.Current.Application["baidu"] = (int)HttpContext.Current.Application["baidu"] + 1;
            }
            HttpContext.Current.Application.UnLock();
            string url = string.Format("http://openapi.baidu.com/public/2.0/bmt/translate?client_id={0}&q={1}&from={2}&to={3}", youAPI_Id, sub, from, to);
            string down = "", result = "";
            try
            {
                WebClient wc = new WebClient();
                down = wc.DownloadString(url);
            }
            catch (Exception)
            {

            }
            JsonData jd = JsonMapper.ToObject(down);
            if (JsonDataContainsKey(jd, "error_code"))
            {
                result += sub;
            }
            else
            {
                JsonData jdResult = jd["trans_result"];
                for (int j = 0; j < jdResult.Count; j++)
                {
                    JsonData jdDst = jdResult[j]["dst"];
                    result += jdDst.ToString();
                }
            }
            return result;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="data"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public bool JsonDataContainsKey(JsonData data, string key)
        {
            bool result = false;
            if (data == null)
                return result;
            if (!data.IsObject)
            {
                return result;
            }
            IDictionary tdictionary = data as IDictionary;
            if (tdictionary == null)
                return result;
            if (tdictionary.Contains(key))
            {
                result = true;
            }
            return result;
        }

    }

    /// <summary>
    /// 
    /// </summary>
    public class TranClass
    {
        public string From { get; set; }
        public string To { get; set; }
        public List<Trans_result> Trans_result { get; set; }
    }
    /// <summary>
    /// 
    /// </summary>
    public class Trans_result
    {
        /// <summary>
        /// 原文
        /// </summary>
        public string src { get; set; }
        /// <summary>
        /// 翻译后的值
        /// </summary>
        public string dst { get; set; }
    }

    /*
     {"from":"zh","to":"en","trans_result":[{"src":"u4e2du56fd","dst":"China"}]}
     */
}