我正在用 JavaScript 向我的 Go 服务器发出 POST 请求以发布一些 JSON 数据。后端成功接收数据。如果我控制台记录 promise 的结果,我会在调用fetchResponse.json()的行收到Unexpected end of JSON input error 。我不知道为什么会这样。JavaScriptconst sendScore = async () => { try { const fetchResponse = await fetch(`http://localhost:8000/sendscore`, { method: 'POST', headers: { 'Accept': 'application/json', 'Content-Type': 'application/json' }, body: JSON.stringify({name:"kris"}) }); const data = await fetchResponse.json(); return data; } catch (e) { return e; }}const sendScoreBtn = document.querySelector("#sendScoreBtn");sendScoreBtn.addEventListener("click", () => { console.log("Sending score...") const res = sendScore() res.then(console.log)})Go /sendscore 端点处理程序func recieveScore(w http.ResponseWriter, r *http.Request) { var res playerScore if err := json.NewDecoder(r.Body).Decode(&res); err != nil { fmt.Println("Line 31", err) } fmt.Println("Res", res)}func main() { // Serve static files(js, css) http.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir("./static")))) http.HandleFunc("/", homePage) http.HandleFunc("/sendscore", recieveScore) fmt.Println("Server started. Listening on port :8000") log.Fatal(http.ListenAndServe(":8000", nil))}
1 回答
LEATH
TA贡献1936条经验 获得超6个赞
我的问题是没有将响应发送回浏览器,因此它无法解析任何 JSON。更新了 Go 处理程序,使该过程正常运行。
func recieveScore(w http.ResponseWriter, r *http.Request) {
var res playerScore
if err := json.NewDecoder(r.Body).Decode(&res); err != nil {
fmt.Println("Line 31", err)
}
fmt.Println("Res", res)
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(res) // Writing the result to response
}
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