c#爬取数据并解析json

安装 Newtonsoft.Json Install-Package Newtonsoft.Json 代码 HttpClient client = new HttpClient(); // 获取网页内容 HttpResponseMessage response = client.GetAsync(" opentdb /api.php?amount=10&category=18&difficulty=easy&type=multiple").Result; response.EnsureSuccessStatusCode(); // 确保请求成功 string content = response.Content.ReadAsStringAsync().Result; //Console.WriteLine(content); Dictionary<string, object> dic = JsonConvert.DeserializeObject<Dictionary<string, object>>(content); List<Result> results = JsonConvert.DeserializeObject<List<Result>>(dic["results"].ToString()); foreach(Result result in results) { result.incorrect_answers.ForEach(item =>Console.WriteLine(item)); } Result类 internal class Result { public string type; public string difficulty; public string category; public string question; public string correct_answer; public List<string> incorrect_answers; } winform代码 using Newtonsoft.Json; namespace WinFormsApp1 { public partial class Form1 : Form { List<Result> results = new List<Result>(); int index = 0; public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { HttpClient client = new HttpClient(); // 获取网页内容 HttpResponseMessage response = client.GetAsync(" opentdb /api.php?amount=10&category=18&difficulty=easy&type=multiple").Result; response.EnsureSuccessStatusCode(); // 确保请求成功 string content = response.Content.ReadAsStringAsync().Result; //Console.WriteLine(content); Dictionary<string, object> dic = JsonConvert.DeserializeObject<Dictionary<string, object>>(content); results = JsonConvert.DeserializeObject<List<Result>>(dic["results"].ToString()); this.label1.Text = results[index].question; List<string> tmpList = new List<string>(); tmpList.Add(results[index].correct_answer); tmpList.Add(results[index].incorrect_answers[0]); tmpList.Add(results[index].incorrect_answers[1]); tmpList.Add(results[index].incorrect_answers[2]); // 使用 Random 和 Sort 打乱顺序 Random random = new Random(); tmpList.Sort((a, b) => random.Next(-1, 2)); this.radioButton1.Text = tmpList[0]; this.radioButton2.Text = tmpList[1]; this.radioButton3.Text = tmpList[2]; this.radioButton4.Text = tmpList[3]; index++; this.button1.Enabled = (index < results.Count); this.radioButton1.ForeColor = Color.Black; this.radioButton2.ForeColor = Color.Black; this.radioButton3.ForeColor = Color.Black; this.radioButton4.ForeColor = Color.Black; this.radioButton1.Checked = false; this.radioButton2.Checked = false; this.radioButton3.Checked = false; this.radioButton4.Checked = false; } private void button1_Click(object sender, EventArgs e) { this.label1.Text = results[index].question; List<string> tmpList = new List<string>(); tmpList.Add(results[index].correct_answer); tmpList.Add(results[index].incorrect_answers[0]); tmpList.Add(results[index].incorrect_answers[1]); tmpList.Add(results[index].incorrect_answers[2]); // 使用 Random 和 Sort 打乱顺序 Random random = new Random(); tmpList.Sort((a, b) => random.Next(-1, 2)); this.radioButton1.Text = tmpList[0]; this.radioButton2.Text = tmpList[1]; this.radioButton3.Text = tmpList[2]; this.radioButton4.Text = tmpList[3]; index++; this.button1.Enabled = (index < results.Count); this.radioButton1.ForeColor = Color.Black; this.radioButton2.ForeColor = Color.Black; this.radioButton3.ForeColor = Color.Black; this.radioButton4.ForeColor = Color.Black; this.radioButton1.Checked = false; this.radioButton2.Checked = false; this.radioButton3.Checked = false; this.radioButton4.Checked = false; } private void showCorrectAnswer() { if (this.radioButton1.Text.Equals(this.results[index - 1].correct_answer)) { this.radioButton1.ForeColor = Color.Blue; } if (this.radioButton2.Text.Equals(this.results[index - 1].correct_answer)) { this.radioButton2.ForeColor = Color.Blue; } if (this.radioButton3.Text.Equals(this.results[index - 1].correct_answer)) { this.radioButton3.ForeColor = Color.Blue; } if (this.radioButton4.Text.Equals(this.results[index - 1].correct_answer)) { this.radioButton4.ForeColor = Color.Blue; } } private void radioButton1_Click(object sender, EventArgs e) { if (this.radioButton1.Text.Equals(this.results[index - 1].correct_answer)) { this.radioButton1.ForeColor = Color.Blue; } else { this.radioButton1.ForeColor = Color.Red; showCorrectAnswer(); } } private void radioButton2_Click(object sender, EventArgs e) { if (this.radioButton2.Text.Equals(this.results[index - 1].correct_answer)) { this.radioButton2.ForeColor = Color.Blue; } else { this.radioButton2.ForeColor = Color.Red; showCorrectAnswer(); } } private void radioButton3_Click(object sender, EventArgs e) { if (this.radioButton3.Text.Equals(this.results[index - 1].correct_answer)) { this.radioButton3.ForeColor = Color.Blue; } else { this.radioButton3.ForeColor = Color.Red; showCorrectAnswer(); } } private void radioButton4_Click(object sender, EventArgs e) { if (this.radioButton4.Text.Equals(this.results[index - 1].correct_answer)) { this.radioButton4.ForeColor = Color.Blue; } else { this.radioButton4.ForeColor = Color.Red; showCorrectAnswer(); } } } }