基于AI大文本模型的智慧对话开发设计及C#源码实现，实现智能文本改写与智慧对话

文章目录

1.AI 大模型发展现状
2.基于AI服务的智慧对话开发
- 2.1 大模型API选择
- 2.2 基于C#的聊天界面开发
- 2.3 星火大模型API接入
- 2.4 优化开发界面与显示逻辑
3.源码工程Demo及相关软件下载
参考文献

1.AI 大模型发展现状

端午假期几天，关注到国内的AI大模型厂商近乎疯狂地打起了价格战，这边阿里云刚宣布降价97%，那边百度就宣布两款模型全面免费，好不热闹！据不完全统计，国内已有7家大模型企业“参战”，包括字节跳动、阿里云、百度、腾讯云等互联网大厂，智谱AI、深度求索等AI创企，以及垂直赛道头部玩家科大讯飞，纷纷争夺“最便宜”“最高性价比”大模型这块蛋糕。
在这里插入图片描述
▲国内大模型厂商参与价格战情况（智东西制表，统计于2024年5月27日）
总的来看，各大厂商对降价原因的解释无外乎以下几点：技术突破了，推理成本降低了；为开发者兜底，降低大模型的使用门槛；提升产品竞争力，积累客户。但大模型价格战对产业的影响具有两面性，既能够促使产业格局变化和商业模式创新，也为开发者带来机遇，有利于爆款应用的开发和大模型私有化部署。

2.基于AI服务的智慧对话开发

由于工作关系，涉及到相关文字材料的编制，对于某些材料，选用baidu的文心一言或者Aliyun的通义千问对于简单的工作来说可以提升部分效率，但是基于网页端还是存在一些限制，于是计划假期间利用C#语言+VS2015的win界面开发优势，配合大模型API实现快速的文本改写、文字降重以及智慧对话的功能

2.1 大模型API选择

选择讯飞星火大模型，其SparkLite免费为开发者开放，且不限tokens和有效期，提供各类开发的Demo源码，对于新手开发的话也比较友好。
在这里插入图片描述

2.2 基于C#的聊天界面开发

聊天界面开发计划基于Panel、RichTextBox、Button、PictureBox组成。其中Button主要负责模拟发送。
在这里插入图片描述

值得说明的是：Panel部分的聊天窗口由设计如下控件组成，且要支持右键菜单的复制和全选的功能，方便获取消息内容。

功能	控件
头像	PictureBox
昵称	Label
发送时间	Label
信息详情	RichTextBox
右键菜单	ContextMenuStrip

实现的效果如下：
在这里插入图片描述

主窗体源码如下：

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;namespace WindowsFormsApplication1
{public partial class Form1 : Form{public Form1(){InitializeComponent();}//新建聊天控件全局变量ChatBubble tsps_chat;private void button1_Click(object sender, EventArgs e){Image touxiang = (WindowsFormsApplication1.Properties.Resources._001);Image touxiang2 = (WindowsFormsApplication1.Properties.Resources._002);//发送tsps_chat.AddMsg(touxiang2,richTextBox1.Text, ChatBubble.MsgPlace.Right, "测试");//模拟接收tsps_chat.AddMsg(touxiang,"你好，我有一个帽衫...",ChatBubble.MsgPlace.Left,"TSPS");}private void Form1_Load(object sender, EventArgs e){panel1.VerticalScroll.Visible = true;panel1.AutoScroll = true;Font ft = new Font("黑体", 12, Font.Style & ~FontStyle.Italic);//创建新的聊天窗口（传入panel和font）tsps_chat = new ChatBubble(panel1, ft);}}}

Panel相关代码如下：

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;namespace WindowsFormsApplication1
{/// <summary>/// 聊天窗口展示类/// </summary>class Class1{}class ChatBubble{/// <summary>/// 生成菜单项/// </summary>/// <param name="txt"></param>/// <param name="img"></param>/// <returns></returns>private ToolStripMenuItem GetMenuItem(string txt, Image img){ToolStripMenuItem menuItem = new ToolStripMenuItem();menuItem.Text = txt;menuItem.Image = img;return menuItem;}/// <summary>/// 菜单项事件响应/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void toolStripMenuItem_Click(object sender, ToolStripItemClickedEventArgs e){//ToolStripMenuItem menuSend = sender as ToolStripMenuItem;//string selectText = ((RichTextBox)menuSend.).SelectedText;//MessageBox.Show(menu.Text);//获取对应控件的值ContextMenuStrip menu_now = (ContextMenuStrip)sender;RichTextBox tb = ((RichTextBox)(menu_now).SourceControl);if (((ContextMenuStrip)sender).Items[0] == e.ClickedItem)//全选{tb.Focus();//设置先焦点定位到当前活动的RichTextBox,tb.SelectAll();}else if (((ContextMenuStrip)sender).Items[1] == e.ClickedItem)//复制{Clipboard.SetDataObject(tb.SelectedText);}}public ChatBubble(Panel panel, Font font){if (panel.Controls.Count != 0) throw new Exception("指定Panel控件不为空!");ChatPlace = panel;BubbleFont = font;Context_caidan = new ContextMenuStrip();MsgMaxLength = panel.Width - (6 * 4 + 35*2 );    // 其中, 四个6为 图片与(容器以及消息文本框)的距离 ,两个35为两侧图片的大小.//右键菜单编辑Context_caidan.Items.Add("全选");//添加到右键菜单Context_caidan.Items.Add("复制");//添加到右键菜单//绑定消息Context_caidan.ItemClicked += new ToolStripItemClickedEventHandler(toolStripMenuItem_Click);//添加事件//Control.ContextMenuStrip = Context_caidan;}readonly Panel ChatPlace;readonly Font BubbleFont;readonly ContextMenuStrip Context_caidan;//右键复制菜单int NowY = 7;readonly int MsgMaxLength;public enum MsgPlace{Left,Right}              // 气泡创建的位置/// <summary>/// 根据文本内容设置textbox高度等属性/// </summary>/// <param name="txt1"></param>private void SettxtHeight(RichTextBox textBox1,string showString){//属性textBox1.Text = showString;textBox1.Multiline = true;textBox1.WordWrap = true;textBox1.Font = BubbleFont;textBox1.Width = MsgMaxLength;textBox1.BorderStyle = BorderStyle.None;textBox1.ContextMenuStrip = Context_caidan;//为文本框添加右键菜单textBox1.ReadOnly = true;//尺寸参数int txtHeight = 22;//设置单行的行高int MaxLineCount = 20;//设置最大行数Size size = TextRenderer.MeasureText(textBox1.Text, textBox1.Font);int itxtLine = size.Width / textBox1.Width + textBox1.Lines.Count() + 1;if (itxtLine > MaxLineCount) { itxtLine = MaxLineCount; }itxtLine -= 1;textBox1.Height = txtHeight * itxtLine;}public void AddMsg(Image Photo, string Text, MsgPlace Place, string Name){if (ChatPlace.Controls.Count > 4*51) //仅保留近51条消息{ChatPlace.Controls.Clear();NowY = 7;}if (ChatPlace.Controls.Count != 0){NowY = ChatPlace.Controls[ChatPlace.Controls.Count - 2].Location.Y+ ChatPlace.Controls[ChatPlace.Controls.Count - 1].Height + 35;//间隔控制}PictureBox photo = new PictureBox();                // 头像Label nickname = new Label();                       // 昵称Label sendtime = new Label();// Label msg = new Label();RichTextBox msg = new RichTextBox();photo.Size = new Size(35, 35);photo.SizeMode = PictureBoxSizeMode.StretchImage;photo.Image = Photo;nickname.AutoSize = true;nickname.MaximumSize = new Size(0, 0);nickname.Font = BubbleFont;nickname.Text = Name;//获取当前时间string timenow = System.DateTime.Now.ToString("T");sendtime.AutoSize = true;sendtime.MaximumSize = new Size(0, 0);sendtime.Font = BubbleFont;sendtime.Text = timenow;//msg.AutoSize = true;//msg.Font = BubbleFont;//msg.MaximumSize = new Size(MsgMaxLength, 0);// msg.Text = Text;//msg.BorderStyle = BorderStyle.None;SettxtHeight(msg,Text);//自动调整文本框大小ChatPlace.Controls.Add(nickname);ChatPlace.Controls.Add(sendtime);ChatPlace.Controls.Add(photo);ChatPlace.Controls.Add(msg);if (Place == MsgPlace.Left){msg.BackColor = Color.LightGreen;photo.Location = new Point(7, NowY);sendtime.Location = new Point(ChatPlace.Width/2-45, NowY);nickname.Location = new Point(photo.Location.X + photo.Width + 6, NowY);msg.Location = new Point(nickname.Location.X, NowY + nickname.Size.Height);}else{msg.BackColor = Color.LightSkyBlue;photo.Location = new Point(ChatPlace.Width - 7 - 35 - 10, NowY);sendtime.Location = new Point(ChatPlace.Width/2 -45 , NowY);nickname.Location = new Point(photo.Location.X - 7 - nickname.Width - 17, NowY);msg.Location = new Point(photo.Location.X - msg.Width - 10, NowY + nickname.Size.Height);// 这里的减去10是除去滚动条的宽度}//panel滚动条到最下方Point newPoint = new Point(0, ChatPlace.Height - ChatPlace.AutoScrollPosition.Y);ChatPlace.AutoScrollPosition = newPoint;}}        // 简易聊天气泡}

2.3 星火大模型API接入

使用如下C#代码接入讯飞星火大模型API

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;
using System.Collections;
using Newtonsoft.Json;
using System.Net.WebSockets;
using System.Threading;
using Newtonsoft.Json.Linq;
using System.Text.Json;/*** 星火认知大模型 WebAPI 接口调用示例 接口文档（必看）：https://www.xfyun.cn/doc/spark/Web.html* 错误码链接：https://www.xfyun.cn/doc/spark/%E6%8E%A5%E5%8F%A3%E8%AF%B4%E6%98%8E.html （code返回错误码时必看）* @author iflytek*/
namespace Webiat
{class Program{static ClientWebSocket webSocket0;static CancellationToken cancellation;// 应用APPID（必须为webapi类型应用，并开通星火认知大模型授权）const string x_appid = "XXXXXXXX";// 接口key（webapi类型应用开通星火认知大模型后，控制台--我的应用---星火认知大模型---相应服务的apikey）const string api_secret = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";// 接口密钥（webapi类型应用开通星火认知大模型后，控制台--我的应用---星火认知大模型---相应服务的apisecret）const string api_key = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";static string hostUrl = "https://spark-api.xf-yun.com/v1.1/chat";async public static void Tasker(){string authUrl = GetAuthUrl();string url = authUrl.Replace("http://", "ws://").Replace("https://", "wss://");using (webSocket0 = new ClientWebSocket()){try{await webSocket0.ConnectAsync(new Uri(url), cancellation);JsonRequest request = new JsonRequest();request.header = new Header(){app_id = x_appid,uid = "12345"};request.parameter = new Parameter(){chat = new Chat(){domain = "general",//模型领域，默认为星火通用大模型temperature = 0.5,//温度采样阈值，用于控制生成内容的随机性和多样性，值越大多样性越高；范围（0，1）max_tokens = 1024,//生成内容的最大长度，范围（0，4096）}};request.payload = new Payload(){message = new Message(){text = new List<Content>{new Content() { role = "user", content = "你是谁" },// new Content() { role = "assistant", content = "....." }, // AI的历史回答结果，这里省略了具体内容，可以根据需要添加更多历史对话信息和最新问题的内容。}}};string jsonString = JsonConvert.SerializeObject(request);//连接成功，开始发送数据var frameData2 = System.Text.Encoding.UTF8.GetBytes(jsonString.ToString());webSocket0.SendAsync(new ArraySegment<byte>(frameData2), WebSocketMessageType.Text, true, cancellation);// 接收流式返回结果进行解析byte[] receiveBuffer = new byte[1024];WebSocketReceiveResult result = await webSocket0.ReceiveAsync(new ArraySegment<byte>(receiveBuffer), cancellation);String resp = "";while (!result.CloseStatus.HasValue){if (result.MessageType == WebSocketMessageType.Text){string receivedMessage = Encoding.UTF8.GetString(receiveBuffer, 0, result.Count);//将结果构造为jsonJObject jsonObj = JObject.Parse(receivedMessage);int code = (int)jsonObj["header"]["code"];if(0==code){int status = (int)jsonObj["payload"]["choices"]["status"];JArray textArray = (JArray)jsonObj["payload"]["choices"]["text"];string content = (string)textArray[0]["content"];resp += content;if(status != 2){Console.WriteLine($"已接收到数据： {receivedMessage}");}else{Console.WriteLine($"最后一帧： {receivedMessage}");int totalTokens = (int)jsonObj["payload"]["usage"]["text"]["total_tokens"];Console.WriteLine($"整体返回结果： {resp}");Console.WriteLine($"本次消耗token数： {totalTokens}");break;}}else{Console.WriteLine($"请求报错： {receivedMessage}");}}else if (result.MessageType == WebSocketMessageType.Close){Console.WriteLine("已关闭WebSocket连接");break;}result = await webSocket0.ReceiveAsync(new ArraySegment<byte>(receiveBuffer), cancellation);}}catch (Exception e){Console.WriteLine(e.Message);}}}// 返回code为错误码时，请查询https://www.xfyun.cn/document/error-code解决方案static string GetAuthUrl(){string date = DateTime.UtcNow.ToString("r");Uri uri = new Uri(hostUrl);StringBuilder builder = new StringBuilder("host: ").Append(uri.Host).Append("\n").//Append("date: ").Append(date).Append("\n").//Append("GET ").Append(uri.LocalPath).Append(" HTTP/1.1");string sha = HMACsha256(api_secret, builder.ToString());string authorization = string.Format("api_key=\"{0}\", algorithm=\"{1}\", headers=\"{2}\", signature=\"{3}\"", api_key, "hmac-sha256", "host date request-line", sha);//System.Web.HttpUtility.UrlEncodestring NewUrl = "https://" + uri.Host + uri.LocalPath;string path1 = "authorization" + "=" + Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(authorization));date = date.Replace(" ", "%20").Replace(":", "%3A").Replace(",", "%2C");string path2 = "date" + "=" + date;string path3 = "host" + "=" + uri.Host;NewUrl = NewUrl + "?" + path1 + "&" + path2 + "&" + path3;return NewUrl;}public static string HMACsha256(string apiSecretIsKey, string buider){byte[] bytes = System.Text.Encoding.UTF8.GetBytes(apiSecretIsKey);System.Security.Cryptography.HMACSHA256 hMACSHA256 = new System.Security.Cryptography.HMACSHA256(bytes);byte[] date = System.Text.Encoding.UTF8.GetBytes(buider);date = hMACSHA256.ComputeHash(date);hMACSHA256.Clear();return Convert.ToBase64String(date);}static void Main(string[] args){Tasker();Console.ReadLine();}}
}//构造请求体
public class JsonRequest
{public Header header { get; set; }public Parameter parameter { get; set; }public Payload payload { get; set; }
}public class Header
{public string app_id { get; set; }public string uid { get; set; }
}public class Parameter
{public Chat chat { get; set; }
}public class Chat
{public string domain { get; set; }public double temperature { get; set; }public int max_tokens { get; set; }
}public class Payload
{public Message message { get; set; }
}public class Message
{public List<Content> text { get; set; }
}public class Content
{public string role { get; set; }public string content { get; set; }
}