C# 抓取繁化姬API JSON資料

September 6, 2018

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2800 words

這裡以抓取繁化姬API的JSON資料為例
這裡我們使用NuGet安裝Newtonsoft.Json
並使用

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

主要流程

利用HttpWebRequest取得網頁內容
利用Newtonsoft.Json分析我們要的內容

完整的程始碼

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

namespace Zhconvert_Api
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        public class SearchResult
        {
            public string text { get; set; }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string Api_Url = @"https://api.zhconvert.org/convert?";
            string Converter_Parameter = @"converter="+ "Taiwan";
            string Json_Format = @"&prettify="+ "1";
            string Translate_Text = @"&text="+ "内存不足！";
            string Full_Url = Api_Url + Converter_Parameter + Json_Format + Translate_Text;
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Full_Url);
            request.Timeout = 10000;
            request.Method = "GET";
            request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; Windows NT 5.2; Windows NT 6.0; Windows NT 6.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; MS-RTC LM 8; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; .NET CLR 4.0C; .NET CLR 4.0E)";
            HttpWebResponse webresponse = (HttpWebResponse)request.GetResponse();
            StreamReader streamReader = new StreamReader(webresponse.GetResponseStream(), Encoding.UTF8);
            string retString = streamReader.ReadToEnd();
            webresponse.Close();
            streamReader.Close();

            JObject Search_Json = JObject.Parse(retString);
            string Chinese_Text = (string)Search_Json["data"]["text"];
            textBox1.Text = Chinese_Text;

        }
    }
}

我們可以看到底下主要抓取JSON的程式碼

        JObject Search_Json = JObject.Parse(retString);
        string Chinese_Text = (string)Search_Json["data"]["text"];
        textBox1.Text = Chinese_Text;