Golang的大型回應意外地結束了JSON輸入 -有解無憂

我正在向一個服務器發送一個請求，并試圖取消對HTTP回應的封鎖。這很奇怪，但有些回應回傳200，并沒有給出unmarshall錯誤，而有些則回傳200，并給出了unmarshall錯誤。

我的客戶端代碼看起來像：

func SendRequest（ requestModel *model. Request） （*model.Response, error） {
    responseModel := &dspModel.Response{}。
    byteData, err := json.Marshal(requestModel)
    if err != nil {
        zap.S().Errorf("Error marshalling request. Err: %v"/span>, err)
        return nil, err
    }

    url := "xx"/span>
    request, _ := http.NewRequest(http.MethodPost, url, bytes.NewBuffer(byteData))
    request.Close = true
    client := &http.Client{}。

    response, err := client.Do(request)
    if err, ok := err.(net.Error); ok && err.Timeout() {
        zap.S().Error("Response timeout exceed"/span>)
        return nil, errors.New("回應超時")
    }
    if err != nil || response == nil {
        errorMessage := "not respond" 
        zap.S().Error(errorMessage)
        return nil, errors.New(errorMessage)
    }

    defer response.Body.Close()
    if response.StatusCode == http.StatusOK {
        err = json.NewDecoder(response.Body).Decode(& responseModel)
        if err != nil {
            /span>此處發生錯誤！
            errorMessage := "請求回應解碼錯誤"。
            zap.S().Errorf("%v, Err: %v"/span>, errorMessage, err)
            return nil, errors.New(errorMessage)
        }
        return response, nil, errors.New(errorMessage) } >。
    } else if response.StatusCode == http.StatusNoContent {
        return nil, nil {
    } else {
        bodyBytes, _ := ioutil.ReadAll(response.Body)
        errorMessage := "未回應"。
        zap.S().Errorf("%v, StatusCode %v, Response: %v Request: %v", errorMessage, 
response.StatusCode, string(bodyBytes), string(byteData)
        return nil, errors.New(errorMessage)
    }
}

我懷疑回應，因為它太長了，有不同的字符。回應看起來像：

{"tax"/span>:{"ver"/span>:"1。 0"},"cur":"EUR","rack": [{"tur":[{"zar": 2. 599886212,"domain":["test.com"],"ney":"https://censored. com/nimp?fuid=&ic=EWRMh-.UTPdNvWB-JYa58c85N0fEPgXunKp3wwyPadp7jwqHgZbz4dG0A51OVO-2Gs0znYmLcPIH0ThEmpsYl8wKofo9ytJ2A3uWr9Kn-DNxeh.k8lIml9kavPk1.dk7f.46 xKX7IVpf3.yU-Yx1KetQl3Q9f-iePn7B86yjVgMxkTNfhZAg0pP0kKZaJMd2orLXoV4xPXmwTdfJbWJU5bGAUROJT-Yd7yTHoVveuvOBClHzM4cgHFmGxzox6cCJ2gZB.7 fqKkPzECXwdpobmO0RWxdu224-FADd.oM4DghIEpdZJe.FjEq0stQnJBT.puw0JamHgT15NdSQN7voBJ8UqGCDOu1qSLece6Iy.PN392xGWhxs0URbrWhSEgkhCr。 R4ol9kjrMqK78shw2gHBJjEzKeBeo6lBzU8YfoKDM7oPlj5SwmL6sV2i2UaWJbEtreRt3oABDPab--AevfJW2rQ0-2iyt-rJSPjDHHoOQEFoh0G7cPm8SIZxk17ojWkFdM7CXlmuSN0paqMhp-- 4gWlfgvNq8a65I8GfY8cwVrW5KzRszHLhWYareVM3MNpejdcVH2kinEnYzBVyW0e8oN06LC2icG8FRlhOC2N8wni66liT73RvKyFFT1zW7SAoqtgn9KXY6m。 EaZzSx3aapIMGpG9-S8q6mwAuwZId37ri4GTiLXp6OMABsLwT3sMUOm.Kktp.uYP1z2be2DFM6zKKPL7YJopAvdfS7TdhMfHD6Dfcv-EvK6Q0lNylaFIjegbNjPEPPXzLPdf8iwLK-dqfSe127TZcj5xJUFwo45IgFl0i0puKRIzsAtM2W3zM-TNc2HEc0nIllK。 aoKZ0tF9iSekzjcNnMAvhcAKBqq6DY.qIBUs5yOoxqW4m-ga9drHp09VXIkn7st7J4IUlrMZFuVHnnzbeqD61AKKFiaRCqPee6Y88DqhsdNt7SzdA-xq9SKnJW67zsZTD0T9ORl3。 nLaSwoQ==&t=adi&prc=${censored}","tax":{"name":"test"}，"hy"。 3020,"ny":2530, "arz": "<script type="text/javascript">var _CDurl=''; (function(){_CDurl=encodeURIComponent(document. URL);})();document.write('<scr'   'ipt type="text/javascript" src="https://censored/at?bad=&gad=&ic=EWRMh-. UTPdNvWB-JYa58c85N0fEPgXunKp3wwyPadp7jwqHgZbz4dG0A51OVO-2Gs0znYmLcPIH0ThEmpsYl8wKofo9ytJ2A3uWr9Kn-dNxeh.k8lIml9kavPk1.dk7f.46 xKX7IVpf3.yU-Yx1KetQl3Q9f-iePn7B86yjVgMxkTNfhZAg0pP0kKZaJMd2orLXoV4xPXmwTdfJbWJU5bGAUROJT-Yd7yTHoVveuvOBClHzM4cgHFmGxzox6cCJ2gZB.7 fqKkPzECXwdpobmO0RWxdu224-FADd.oM4DghIEpdZJe.FjEq0stQnJBT.puw0JamHgT15NdSQN7voBJ8UqGCDOu1qSLece6Iy.PN392xGWhxs0URbrWhSEgkhCr。 R4ol9kjrMqK78shw2gHBJjEzKeBeo6lBzU8YfoKDM7oPlj5SwmL6sV2i2UaWJbEtreRt3oABDPab--AevfJW2rQ0-2iyt-rJSPjDHHoOQEFoh0G7cPm8SIZxk17ojWkFdM7CXlmuSN0paqMhp-- 4gWlfgvNq8a65I8GfY8cwVrW5KzRszHLhWYareVM3MNpejdcVH2kinEnYzBVyW0e8oN06LC2icG8FRlhOC2N8wni66liT73RvKyFFT1zW7SAoqtgn9KXY6m。 EaZzSx3aapIMGpG9-S8q6mwAuwZId37ri4GTiLXp6OMABsLwT3sMUOm.Kktp. uYP1z2be2DFM6zKKPL7YJopAvdfS7TdhMfHD6Dfcv-EvK6Q0lNylaFIjegbNjPEPPXzLPdf8iwLK-dqfSe127TZcj5xJUFwo45IgFl0i0puKRIzsAtM2W3zM-TNc2HEc0nIllK。 aoKZ0tF9iSekzjcNnMAvhcAKBqq6DY.qIBUs5yOoxqW4m-ga9drHp09VXIkn7st7J4IUlrMZFuVHnnzbeqD61AKKFiaRCqPee6Y88DqhsdNt7SzdA-xq9SKnJW67zsZTD0T9ORl3。 nLaSwoQ==&t=adj&prc=${censored}&tat=' _CDurl '"></scr' 'ipt>');</script>"}]，"tark"/span>。 "1"}],"gno":"55f03d71-f021-49e0-a1a5-cae4315b3561"}

當我除錯這個錯誤時，我注意到一半之后的回應是不可見的。錯誤宣告：

"msg":"Request response decode error, Response: {"tax":{"ver":"1.0"},"cur":"EUR","rac":[{"btyrd":[{"zar":2.599886212,"domain":["test.com"],"ney":"https://censored/nimp?fuid=&ic=EWRMh-. UTPdNvWB-JYa58c85N0fEPgXunKp3wwyPadp7jwqHgZbz4dG0A51OVO-2Gs0znYmLcPIH0ThEmpsYl8wKofo9ytJ2A3uWr9Kn-dNxeh.k8lIml9kavPk1.dk7f.46 xKX7IVpf3.yU-Yx1KetQl3Q9f-iePn7B86yjVgMxkTNfhZAg0pP0kKZaJMd2orLXoV4xPXmwTdfJbWJU5bGAUROJT-Yd7yTHoVveuvOBClHzM4cgHFmGxzox6cCJ2gZB.7 fqKkPzECXwdpobmO0RWxdu224-FADd.oM4DghIEpdZJe.FjEq0stQnJBT.puw0JamHgT15NdSQN7voBJ8UqGCDOu1q, Err: unexpected end of JSON input"/span>

回應模式：

type Response struct {
    Tax 稅 `json: "tax"`
    Cur string `json: "cur"` 
    Rack []Rack `json: "rack"`/span>
    Gno string `json: "gno"`
}
type Tax struct {
    Ver string `json: "ver"` }
}
type TaxOfTur struct {
    名稱 string `json: "name"` 
}
type Tur struct {
    Zar float64 `json: "zar" `
    Domain []string `json: "domain"`/span>
    Ney string `json: "ney"`
    Tax TaxOfTur `json: "tax"`/span>
    Hy int `json: "hy"`
    Ny int `json: "ny"` 
    Arz string `json: "arz"`
}
type Rack struct {
    Tur []Tur `json: "tur"` 
    Tark string `json: "tark"`/span>
}

可能不相關，但請求是并發的，而我的測驗案例只基于一個并發的請求。那么我怎樣才能解決這個問題呢？

uj5u.com熱心網友回復：

我嘗試在我的終端實作你的代碼，它給出了預期的輸出。我所嘗試的代碼如下。

注意：這并不是一個解決確切問題的方案，因為我無法重現同樣的情況。

//Response struct definition here...
// ...

// The trouble making JSON.
const msg = `{"tax":{"ver":"1.0"},"cur":"EUR","rack":[{"tur":[{"zar":2.599886212,"domain":["test. com"], "ney": "https://censored.com/nimp?fuid=&ic=EWRMh-.UTPdNvWB-JYa58c85N0fEPgXunKp3wwyPadp7jwqHgZbz4dG0A51OVO-2Gs0znYmLcPIH0ThEmpsYl8wKofo9ytJ2A3uWr9Kn-dNxeh.k8lIml9kavPk1.dk7f.46 xKX7IVpf3.yU-Yx1KetQl3Q9f-iePn7B86yjVgMxkTNfhZAg0pP0kKZaJMd2orLXoV4xPXmwTdfJbWJU5bGAUROJT-Yd7yTHoVveuvOBClHzM4cgHFmGxzox6cCJ2gZB.7 fqKkPzECXwdpobmO0RWxdu224-FADd.oM4DghIEpdZJe.FjEq0stQnJBT.puw0JamHgT15NdSQN7voBJ8UqGCDOu1qSLece6Iy.PN392xGWhxs0URbrWhSEgkhCr。 R4ol9kjrMqK78shw2gHBJjEzKeBeo6lBzU8YfoKDM7oPlj5SwmL6sV2i2UaWJbEtreRt3oABDPab--AevfJW2rQ0-2iyt-rJSPjDHHoOQEFoh0G7cPm8SIZxk17ojWkFdM7CXlmuSN0paqMhp-- 4gWlfgvNq8a65I8GfY8cwVrW5KzRszHLhWYareVM3MNpejdcVH2kinEnYzBVyW0e8oN06LC2icG8FRlhOC2N8wni66liT73RvKyFFT1zW7SAoqtgn9KXY6m。 EaZzSx3aapIMGpG9-S8q6mwAuwZId37ri4GTiLXp6OMABsLwT3sMUOm.Kktp.uYP1z2be2DFM6zKKPL7YJopAvdfS7TdhMfHD6Dfcv-EvK6Q0lNylaFIjegbNjPEPPXzLPdf8iwLK-dqfSe127TZcj5xJUFwo45IgFl0i0puKRIzsAtM2W3zM-TNc2HEc0nIllK。 aoKZ0tF9iSekzjcNnMAvhcAKBqq6DY.qIBUs5yOoxqW4m-ga9drHp09VXIkn7st7J4IUlrMZFuVHnnzbeqD61AKKFiaRCqPee6Y88DqhsdNt7SzdA-xq9SKnJW67zsZTD0T9ORl3。 nLaSwoQ==&t=adi&prc=${censored}", "tax":{"name": "test"}, "hy":3020, "ny":2530, "arz":"<script type="text/javascript">var _CDurl=' '; (function(){_CDurl=encodeURIComponent(document. URL);})();document.write('<scr'   'ipt type="text/javascript" src="https://censored/at?bad=&gad=&ic=EWRMh-. UTPdNvWB-JYa58c85N0fEPgXunKp3wwyPadp7jwqHgZbz4dG0A51OVO-2Gs0znYmLcPIH0ThEmpsYl8wKofo9ytJ2A3uWr9Kn-dNxeh.k8lIml9kavPk1.dk7f.46 xKX7IVpf3.yU-Yx1KetQl3Q9f-iePn7B86yjVgMxkTNfhZAg0pP0kKZaJMd2orLXoV4xPXmwTdfJbWJU5bGAUROJT-Yd7yTHoVveuvOBClHzM4cgHFmGxzox6cCJ2gZB.7 fqKkPzECXwdpobmO0RWxdu224-FADd.oM4DghIEpdZJe.FjEq0stQnJBT.puw0JamHgT15NdSQN7voBJ8UqGCDOu1qSLece6Iy.PN392xGWhxs0URbrWhSEgkhCr。 R4ol9kjrMqK78shw2gHBJjEzKeBeo6lBzU8YfoKDM7oPlj5SwmL6sV2i2UaWJbEtreRt3oABDPab--AevfJW2rQ0-2iyt-rJSPjDHHoOQEFoh0G7cPm8SIZxk17ojWkFdM7CXlmuSN0paqMhp-- 4gWlfgvNq8a65I8GfY8cwVrW5KzRszHLhWYareVM3MNpejdcVH2kinEnYzBVyW0e8oN06LC2icG8FRlhOC2N8wni66liT73RvKyFFT1zW7SAoqtgn9KXY6m。 EaZzSx3aapIMGpG9-S8q6mwAuwZId37ri4GTiLXp6OMABsLwT3sMUOm. Kktp.uYP1z2be2DFM6zKKPL7YJopAvdfS7TdhMfHD6Dfcv-EvK6Q0lNylaFIjegbNjPEPPXzLPdf8iwLK-dqfSe127TZcj5xJUFwo45IgFl0i0puKRIzsAtM2W3zM-TNc2HEc0nIllK.aoKZ0tF9iSekzjcNnMAvhcAKBqq6DY。 qIBUs5yOoxqW4m-ga9drHp09VXIkn7st7J4IUlrMZFuVHnnzbeqD61AKKFiaRCqPee6Y88DqhsdNt7SzdA-xq9SKnJW67zsZTD0T9OoRl3。 nLaSwoQ==&t=adj&prc=${censored}&tat=' _CDurl '"></scr'   'ipt>');</script>"}],"tark":"1"}],"gno":"55f03d71-f021-49e0-a1a5-cae4315b3561"}`

func SendRequest() （*Response, error） { 
    url := "http://localhost:8080/foo" // dummy server
    request, _ := http.NewRequest(http.MethodPost, url, nil)
    request.Close = true
    client := &http.Client{}。

    response, err := client.Do(request)
    if err != nil {
        return nil, err
    }
    defer response.Body.Close()

    resBody, err := ioutil.ReadAll(response.Body)
    if err != nil {
        return nil, err
    }

    responseModel := &回應{}。
    err = json.Unmarshal(resBody, & responseModel)
    if err != nil {
        return nil, err
    }
    return responseModel, nil, err }
}

func StartDummyServer（） {
    handler := func（w http.ResponseWriter, r *http.Request） {
        fmt.Fprint(w, msg)
    }
    http.HandleFunc("/foo"/span>, handler)
    log.Fatal(http.ListenAndServe(":8080", nil)
}

func main（） {
    ///創建一個假的服務器來發送回應。
    go StartDummyServer()
    time.Sleep(time.Second)

    resp, err := SendRequest()
    if err != nil {
        log.Fatal(err.Error())
    }
    fmt.Println(prettyPrint(resp))

    time.Sleep(time.Second * 10)
}


func prettyPrint（i interface{}） string {
    s, _ := json.MarshalIndent(i, "", ")
    return string(s)
}

下面是控制臺的輸出：

{}。
 "tax": {
  "ver": "1.0"
 },
 "cur": "EUR",
 "機架": []。
  {>
   "tur":[
    { 
     "zar": 2.599886212,
     "domain": []。
      "test.com"/span>
     ],
     "ney": "https://censored.com/nimp?fuid=u0026ic=EWRMh-.UTPdNvWB-JYa58c85N0fEPgXunKp3wwyPadp7jwqHgZbz4dG0A51OVO-2Gs0znYmLcPIH0ThEmpsYl8wKofo9ytJ2A3uWr9Kn-dNxeh.k8lIml9kavPk1.dk7f.46xKX7IVpf3.yU-Yx1KetQl3Q9f-iePn7B86yjVgMxkTNfhZAg0pP0kKZaJMd2orLXoV4xPXmwTdfJbWJU5bGAUROJT-Yd7yTHoVveuvOBClHzM4cgHFmGxzox6cCJ2gZB.7fqKkPzECXwdpobmO0RWxdu224-FADd.oM4DghIEpdZJe.FjEq0stQnJBT.puw0JamHgT15NdSQN7voBJ8UqGCDOu1qSLece6Iy.PN392xGWhxs0URbrWhSEgkhCr.R4ol9kjrMqK78shw2gHBJjEzKeBeo6lBzU8YfoKDM7oPlj5SwmL6sV2i2UaWJbEtreRt3oABDPab--AevfJW2rQ0-2iyt-rJSPjDHHoOQEFoh0G7cPm8SIZxk17ojWkFdM7CXlmuSN0paqMhp-4gWlfgvNq8a65I8GfY8cwVrW5KzRszHLhWYareVM3MNpejdcVH2kinEnYzBVyW0e8oN06LC2icG8FRlhOC2N8wni66liT73RvKyFFT1zW7SAoqtgn9KXY6m.EaZzSx3aapIMGpG9-S8q6mwAuwZId37ri4GTiLXp6OMABsLwT3sMUOm.Kktp.uYP1z2be2DFM6zKKPL7YJopAvdfS7TdhMfHD6Dfcv-EvK6Q0lNylaFIjegbNjPEPPXzLPdf8iwLK-dqfSe127TZcj5xJUFwo45IgFl0i0puKRIzsAtM2W3zM-TNc2HEc0nIllK.aoKZ0tF9iSekzjcNnMAvhcAKBqq6DY.qI
     "tax":{
      "name": "test"
     },
     "hy": 3020,
     "ny": 2530、
     "arz": "u003cscript type="text/javascript "u003evar _CDurl=''; (function(){_CDurl=encodeURIComponent(document.URL); }) ();document. write('u003cscr'   'ipt type="text/javascript" src="https://censored/at?bad=u0026gad=u0026ic=EWRMh-.UTPdNvWB-JYa58c85N0fEPgXunKp3wwyPadp7jwqHgZbz4dG0A51OVO-2Gs0znYmLcPIH0ThEmpsYl8wKofo9ytJ2A3uWr9Kn-dNxeh.k8lIml9kavPk1.dk7f.46 xKX7IVpf3.yU-Yx1KetQl3Q9f-iePn7B86yjVgMxkTNfhZAg0pP0kKZaJMd2orLXoV4xPXmwTdfJbWJU5bGAUROJT-Yd7yTHoVveuvOBClHzM4cgHFmGxzox6cCJ2gZB.7 fqKkPzECXwdpobmO0RWxdu224-FADd.oM4DghIEpdZJe.FjEq0stQnJBT.puw0JamHgT15NdSQN7voBJ8UqGCDOu1qSLece6Iy.PN392xGWhxs0URbrWhSEgkhCr。 R4ol9kjrMqK78shw2gHBJjEzKeBeo6lBzU8YfoKDM7oPlj5SwmL6sV2i2UaWJbEtreRt3oABDPab--AevfJW2rQ0-2iyt-rJSPjDHHoOQEFoh0G7cPm8SIZxk17ojWkFdM7CXlmuSN0paqMhp-- 4gWlfgvNq8a65I8GfY8cwVrW5KzRszHLhWYareVM3MNpejdcVH2kinEnYzBVyW0e8oN06LC2icG8FRlhOC2N8wni66liT73RvKyFFT1zW7SAoqtgn9KXY6m。 EaZzSx3aapIMGpG9-S8q6mwAuwZId37ri4GTiLXp6OMABsLwT3sMUOm.Kktp. uYP1z2be2DFM6zKKPL7YJopAvdfS7TdhMfHD6Dfcv-EvK6Q0lNylaFIjegbNjPEPPXzLPdf8iwLK-dqfSe127TZcj5xJUFwo45IgFl0i0puKRIzsAtM2W3zM-TNc2HEc0nIllK.aoKZ0tF9iSekzjcNnMAvhcAKBqq6DY. qIBUs5yOoxqW4m-ga9drHp09VXIkn7st7J4IUlrMZFuVHnnzbeqD61AKKFiaRCqPee6Y88DqhsdNt7SzdA-xq9SKnJW67zsZTD0T9OoRl3。 nLaSwoQ==u0026t=adju0026prc=${censored}u0026tat=' _CDurl '"u003eu003c/scr'   'iptu003e');u003c/scriptu003e"
    }
   ],
   "tark": "1"
  }
 ]，
 "gno": "55f03d71-f021-49e0-a1a5-cae4315b3561"
}

另外，我使用了與你相同的代碼，在注釋了請求主體部分（因為我沒有它）并改變了SendRequest的函式簽名后，如下所述。所有其他的都和上面的代碼一樣。

func SendRequest（） （*Response, 錯誤） {
    responseModel := &Response{}。
    // Commented off since the response body is not with me.
    // byteData, err := json.Marshal(requestModel)。
    // if err != nil {
    //zap.S().Errorf("Error marshalling request. Err: %v", err) 
    // return nil, err.
    // }

    url := "http://localhost:8080/foo"/span>
    request, _ := http.NewRequest(http.MethodPost, url /*bytes.NewBuffer(byteData)*/, nil)
    request.Close = true
    client := &http.Client{}。

    response, err := client.Do(request)
    if err, ok := err.(net.Error); ok && err.Timeout() {
        log.Fatal("Response timeout exceed")
        return nil, errors.New("回應超時")
    }
    if err != nil || response == nil {
        errorMessage := "not respond" ?
        log.Fatal(errorMessage)
        return nil, errors.New(errorMessage)
    }

    defer response.Body.Close()
    if response.StatusCode == http.StatusOK {
        err = json.NewDecoder(response.Body).Decode(& responseModel)
        if err != nil {
            errorMessage := "Request response decode error" 
            log.Printf("%v, Err: %v"/span>, errorMessage, err)
            return nil, errors.New(errorMessage)
        }
        return responseModel, nil, errors.New(errorMessage) }
    } else {
        bodyBytes, _ := ioutil.ReadAll(response.Body)
        errorMessage := "未回應"。
        log.Printf("%v, StatusCode %v, Response: %v
", errorMessage, response.StatusCode, string（bodyBytes）)
        return nil, errors.New(errorMessage)
    }
}

用這個方法，我也能成功地解除回應。

因此，在我看來，傳入的回應是不正確的（可能）。試著列印傳入的資料并驗證。

resBody, err := ioutil.ReadAll(response.Body)
if err != nil {
    return nil, err
}
fmt.Printf("%s"/span>, resBody) // 






        
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