499 lines
12 KiB
Go
499 lines
12 KiB
Go
package main
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import (
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"database/sql"
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"encoding/json"
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"fmt"
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"log"
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"math/rand"
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"net/http"
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"os"
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"time"
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)
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var seededRand = rand.New(rand.NewSource(time.Now().UnixNano()))
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// 数据库结构
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type Stock struct {
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ID int `json:"id"`
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Symbol string `json:"symbol"`
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Name string `json:"name"`
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CurrentPrice float64 `json:"current_price"`
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Change float64 `json:"change"`
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ChangePercent float64 `json:"change_percent"`
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MarketCap string `json:"market_cap"`
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PERatio float64 `json:"pe_ratio"`
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ROE float64 `json:"roe"`
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DebtRatio float64 `json:"debt_ratio"`
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UpdateTime string `json:"update_time"`
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}
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type KLineData struct {
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Symbol string `json:"symbol"`
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Date string `json:"date"`
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Open float64 `json:"open"`
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High float64 `json:"high"`
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Low float64 `json:"low"`
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Close float64 `json:"close"`
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Volume int64 `json:"volume"`
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}
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type TechnicalIndicator struct {
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ID int `json:"id"`
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Symbol string `json:"symbol"`
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Date string `json:"date"`
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RSI float64 `json:"rsi"`
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MACD float64 `json:"macd"`
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MACDSignal float64 `json:"macd_signal"`
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MA5 float64 `json:"ma5"`
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MA10 float64 `json:"ma10"`
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MA20 float64 `json:"ma20"`
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UpdateTime string `json:"update_time"`
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}
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type Financials struct {
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ID int `json:"id"`
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Symbol string `json:"symbol"`
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Revenue float64 `json:"revenue"`
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Profit float64 `json:"profit"`
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ROE float64 `json:"roe"`
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DebtToEquity float64 `json:"debt_to_equity"`
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UpdateTime string `json:"update_time"`
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}
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// 全局变量
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var db *sql.DB
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func main() {
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var err error
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db, err = sql.Open("sqlite3", "./stock.db")
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if err != nil {
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log.Fatal(err)
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}
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defer db.Close()
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// 初始化数据库
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initDB()
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// 注册路由
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http.HandleFunc("/", handleIndex)
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http.HandleFunc("/api/stocks", handleGetStocks)
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http.HandleFunc("/api/stock/", handleStockDetail)
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http.HandleFunc("/api/stock/", handleKLine)
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http.HandleFunc("/api/stock/", handleIndicators)
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http.HandleFunc("/api/stock/", handleFinancials)
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http.HandleFunc("/api/search", handleSearch)
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http.HandleFunc("/api/refresh/", handleRefresh)
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// 启动服务器
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port := os.Getenv("PORT")
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if port == "" {
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port = "8080"
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}
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log.Printf("🚀 服务器启动: http://localhost:%s", port)
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log.Fatal(http.ListenAndServe(":"+port, nil))
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}
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func initDB() {
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query := `
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CREATE TABLE IF NOT EXISTS stocks (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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symbol TEXT UNIQUE,
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name TEXT,
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current_price REAL,
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change REAL,
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change_percent REAL,
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market_cap TEXT,
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pe_ratio REAL,
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roe REAL,
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debt_ratio REAL,
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update_time TEXT
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);
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CREATE TABLE IF NOT EXISTS klines (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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symbol TEXT,
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date TEXT,
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open REAL,
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high REAL,
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low REAL,
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close REAL,
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volume INTEGER,
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FOREIGN KEY(symbol) REFERENCES stocks(symbol)
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);
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CREATE TABLE IF NOT EXISTS indicators (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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symbol TEXT,
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date TEXT,
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rsi REAL,
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macd REAL,
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macd_signal REAL,
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ma5 REAL,
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ma10 REAL,
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ma20 REAL,
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update_time TEXT,
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FOREIGN KEY(symbol) REFERENCES stocks(symbol)
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);
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CREATE TABLE IF NOT EXISTS financials (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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symbol TEXT UNIQUE,
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revenue REAL,
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profit REAL,
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roe REAL,
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debt_to_equity REAL,
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update_time TEXT
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);
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`
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_, err := db.Exec(query)
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if err != nil {
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log.Fatal(err)
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}
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log.Println("✅ 数据库初始化成功")
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}
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// 主页面
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func handleIndex(w http.ResponseWriter, r *http.Request) {
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// 读取HTML模板
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content, err := os.ReadFile("templates/index.html")
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "text/html; charset=utf-8")
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w.Write(content)
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}
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// 获取股票列表
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func handleGetStocks(w http.ResponseWriter, r *http.Request) {
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rows, err := db.Query("SELECT * FROM stocks ORDER BY update_time DESC")
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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defer rows.Close()
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var stocks []Stock
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for rows.Next() {
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var s Stock
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err := rows.Scan(&s.ID, &s.Symbol, &s.Name, &s.CurrentPrice,
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&s.Change, &s.ChangePercent, &s.MarketCap,
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&s.PERatio, &s.ROE, &s.DebtRatio, &s.UpdateTime)
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if err != nil {
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continue
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}
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stocks = append(stocks, s)
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(stocks)
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}
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// 获取股票详情
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func handleStockDetail(w http.ResponseWriter, r *http.Request) {
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symbol := r.URL.Path[len("/api/stock/"):]
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if symbol == "" {
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http.Error(w, "股票代码不能为空", http.StatusBadRequest)
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return
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}
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var stock Stock
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err := db.QueryRow(`
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SELECT * FROM stocks WHERE symbol = ?
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`, symbol).Scan(&stock.ID, &stock.Symbol, &stock.Name,
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&stock.CurrentPrice, &stock.Change, &stock.ChangePercent,
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&stock.MarketCap, &stock.PERatio, &stock.ROE, &stock.DebtRatio, &stock.UpdateTime)
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if err != nil {
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http.Error(w, "股票不存在", http.StatusNotFound)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(stock)
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}
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// 获取K线数据
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func handleKLine(w http.ResponseWriter, r *http.Request) {
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symbol := r.URL.Path[len("/api/stock/"):]
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if symbol == "" {
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http.Error(w, "股票代码不能为空", http.StatusBadRequest)
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return
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}
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rows, err := db.Query(`
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SELECT date, open, high, low, close, volume FROM klines
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WHERE symbol = ? ORDER BY date DESC LIMIT 100
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`, symbol)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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defer rows.Close()
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var klines []KLineData
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for rows.Next() {
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var k KLineData
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err := rows.Scan(&k.Date, &k.Open, &k.High, &k.Low, &k.Close, &k.Volume)
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if err != nil {
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continue
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}
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klines = append(klines, k)
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(klines)
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}
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// 获取技术指标
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func handleIndicators(w http.ResponseWriter, r *http.Request) {
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symbol := r.URL.Path[len("/api/stock/"):]
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if symbol == "" {
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http.Error(w, "股票代码不能为空", http.StatusBadRequest)
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return
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}
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rows, err := db.Query(`
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SELECT date, rsi, macd, macd_signal, ma5, ma10, ma20
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FROM indicators WHERE symbol = ? ORDER BY date DESC LIMIT 100
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`, symbol)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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defer rows.Close()
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var indicators []TechnicalIndicator
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for rows.Next() {
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var ind TechnicalIndicator
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err := rows.Scan(&ind.Date, &ind.RSI, &ind.MACD, &ind.MACDSignal,
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&ind.MA5, &ind.MA10, &ind.MA20)
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if err != nil {
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continue
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}
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indicators = append(indicators, ind)
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(indicators)
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}
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// 获取财务数据
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func handleFinancials(w http.ResponseWriter, r *http.Request) {
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symbol := r.URL.Path[len("/api/stock/"):]
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if symbol == "" {
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http.Error(w, "股票代码不能为空", http.StatusBadRequest)
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return
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}
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var f Financials
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err := db.QueryRow(`
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SELECT revenue, profit, roe, debt_to_equity
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FROM financials WHERE symbol = ?
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`, symbol).Scan(&f.Revenue, &f.Profit, &f.ROE, &f.DebtToEquity)
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if err != nil {
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http.Error(w, "财务数据不存在", http.StatusNotFound)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(f)
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}
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// 搜索股票
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func handleSearch(w http.ResponseWriter, r *http.Request) {
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query := r.URL.Query().Get("q")
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if query == "" {
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http.Error(w, "请输入搜索关键词", http.StatusBadRequest)
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return
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}
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rows, err := db.Query(`
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SELECT symbol, name, current_price, change_percent
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FROM stocks WHERE symbol LIKE ? OR name LIKE ?
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ORDER BY current_price DESC
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`, "%"+query+"%", "%"+query+"%")
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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defer rows.Close()
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var results []map[string]interface{}
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for rows.Next() {
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var symbol, name string
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var currentPrice, changePercent float64
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err := rows.Scan(&symbol, &name, ¤tPrice, &changePercent)
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if err != nil {
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continue
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}
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results = append(results, map[string]interface{}{
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"symbol": symbol,
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"name": name,
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"current_price": currentPrice,
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"change_percent": changePercent,
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})
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(results)
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}
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// 刷新股票数据
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func handleRefresh(w http.ResponseWriter, r *http.Request) {
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symbol := r.URL.Path[len("/api/refresh/"):]
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if symbol == "" {
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http.Error(w, "股票代码不能为空", http.StatusBadRequest)
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return
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}
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// 获取yfinance数据
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stock := fetchYahooFinance(symbol)
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// 存储到数据库
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storeStockData(stock)
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storeKLineData(stock)
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storeIndicatorData(stock)
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(map[string]interface{}{
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"message": "数据刷新成功",
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"symbol": symbol,
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"price": stock.CurrentPrice,
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"update_time": time.Now().Format("2006-01-02 15:04:05"),
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})
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}
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// yfinance API调用（简化版）
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func fetchYahooFinance(symbol string) Stock {
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// 模拟数据
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return Stock{
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Symbol: symbol,
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Name: getCompanyName(symbol),
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CurrentPrice: getRandomPrice(),
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Change: getRandomChange(),
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ChangePercent: getRandomChangePercent(),
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MarketCap: getRandomMarketCap(),
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PERatio: getRandomPERatio(),
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ROE: getRandomROE(),
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DebtRatio: getRandomDebtRatio(),
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UpdateTime: time.Now().Format("2006-01-02 15:04:05"),
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}
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}
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func getCompanyName(symbol string) string {
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companies := map[string]string{
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"AAPL": "Apple Inc.",
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"MSFT": "Microsoft Corporation",
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"GOOGL": "Alphabet Inc.",
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"AMZN": "Amazon.com Inc.",
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"NVDA": "NVIDIA Corporation",
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"TSLA": "Tesla Inc.",
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"META": "Meta Platforms Inc.",
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"JPM": "JPMorgan Chase & Co.",
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"V": "Visa Inc.",
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"JNJ": "Johnson & Johnson",
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}
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if name, ok := companies[symbol]; ok {
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return name
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}
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return "Unknown Company"
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}
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func getRandomPrice() float64 {
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return 100 + float64(time.Now().Unix() % 500)
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}
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func getRandomChange() float64 {
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return (randFloat64(0,1) * 10) - 5
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}
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func getRandomChangePercent() float64 {
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return (randFloat64(0,1) * 10) - 5
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}
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func getRandomMarketCap() string {
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segments := []string{"B", "T"}
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return fmt.Sprintf("$%d%s", int(randFloat64(0,1)*1000), segments[rand.Intn(2)])
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}
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func getRandomPERatio() float64 {
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return 10 + randFloat64(0,1)*40
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}
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func getRandomROE() float64 {
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return 5 + randFloat64(0,1)*30
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}
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func getRandomDebtRatio() float64 {
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return 20 + randFloat64(0,1)*80
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}
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func storeStockData(stock Stock) error {
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_, err := db.Exec(`
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INSERT INTO stocks (symbol, name, current_price, change, change_percent, market_cap, pe_ratio, roe, debt_ratio, update_time)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
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ON CONFLICT(symbol) DO UPDATE SET
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current_price = excluded.current_price,
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change = excluded.change,
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change_percent = excluded.change_percent,
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market_cap = excluded.market_cap,
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pe_ratio = excluded.pe_ratio,
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roe = excluded.roe,
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debt_ratio = excluded.debt_ratio,
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update_time = excluded.update_time
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`, stock.Symbol, stock.Name, stock.CurrentPrice, stock.Change, stock.ChangePercent,
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stock.MarketCap, stock.PERatio, stock.ROE, stock.DebtRatio, stock.UpdateTime)
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return err
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}
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func storeKLineData(stock Stock) error {
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for i := 0; i < 100; i++ {
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date := time.Now().AddDate(0, 0, -i).Format("2006-01-02")
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open := stock.CurrentPrice + (randFloat64(0,1)-0.5)*10
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high := open + randFloat64(0,1)*5
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low := open - randFloat64(0,1)*5
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close := open + (randFloat64(0,1)-0.5)*5
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volume := int64(randFloat64(0,1) * 1000000)
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_, err := db.Exec(`
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INSERT INTO klines (symbol, date, open, high, low, close, volume)
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VALUES (?, ?, ?, ?, ?, ?, ?)
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`, stock.Symbol, date, open, high, low, close, volume)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func storeIndicatorData(stock Stock) error {
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for i := 0; i < 100; i++ {
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date := time.Now().AddDate(0, 0, -i).Format("2006-01-02")
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rsi := 30 + randFloat64(0,1)*40
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macd := (randFloat64(0,1) * 10) - 5
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macdSignal := macd + (randFloat64(0,1)-0.5)*2
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ma5 := stock.CurrentPrice + (randFloat64(0,1)-0.5)*5
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ma10 := stock.CurrentPrice + (randFloat64(0,1)-0.5)*8
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ma20 := stock.CurrentPrice + (randFloat64(0,1)-0.5)*12
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_, err := db.Exec(`
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INSERT INTO indicators (symbol, date, rsi, macd, macd_signal, ma5, ma10, ma20, update_time)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
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`, stock.Symbol, date, rsi, macd, macdSignal, ma5, ma10, ma20,
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time.Now().Format("2006-01-02 15:04:05"))
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if err != nil {
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return err
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}
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}
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return nil
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}
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func randFloat64(min, max float64) float64 {
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return min + seededRand.Float64()*(max-min)
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}
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