xieyao
96711ffb35
- Go web server using Gin framework - Proxy FRED economic data API - Support series, observations, search, releases endpoints
89 lines
2.0 KiB
Go
89 lines
2.0 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"net/url"
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)
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const (
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APIKey = "987b9c3428a3d0fe90179e3e6298d05e"
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BaseURL = "https://api.stlouisfed.org/fred"
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)
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func buildURL(endpoint string, params map[string]string) string {
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u, _ := url.Parse(BaseURL + endpoint)
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query := u.Query()
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query.Set("api_key", APIKey)
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query.Set("file_type", "json")
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for k, v := range params {
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if v != "" {
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query.Set(k, v)
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}
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}
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u.RawQuery = query.Encode()
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return u.String()
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}
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func fetchAndPrint(endpoint string, params map[string]string) {
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url := buildURL(endpoint, params)
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fmt.Printf("\n=== Testing %s ===\n", endpoint)
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fmt.Printf("URL: %s\n\n", url)
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resp, err := http.Get(url)
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if err != nil {
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fmt.Printf("Error: %v\n", err)
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return
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}
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defer resp.Body.Close()
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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fmt.Printf("Error reading body: %v\n", err)
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return
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}
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var prettyJSON map[string]interface{}
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if err := json.Unmarshal(body, &prettyJSON); err == nil {
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output, _ := json.MarshalIndent(prettyJSON, "", " ")
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fmt.Printf("Response:\n%s\n", output)
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} else {
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fmt.Printf("Response:\n%s\n", string(body))
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}
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}
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func main() {
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fmt.Println("========================================")
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fmt.Println(" FRED API 测试脚本")
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fmt.Println("========================================")
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fetchAndPrint("/series", map[string]string{"series_id": "GNPCA"})
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fetchAndPrint("/series/observations", map[string]string{
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"series_id": "GNPCA",
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"limit": "5",
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"observation_end": "2000-01-01",
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})
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fetchAndPrint("/series/search", map[string]string{
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"search_text": "GDP",
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"limit": "3",
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})
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fetchAndPrint("/releases", map[string]string{
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"limit": "3",
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})
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fetchAndPrint("/releases/dates", map[string]string{
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"limit": "3",
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"start_date": "2026-03-01",
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"end_date": "2026-03-31",
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})
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fmt.Println("\n========================================")
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fmt.Println(" 测试完成!")
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fmt.Println("========================================")
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}
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