我有兩個在 localhost 上運行的 golang 服務(wù)器。他們使用不同的端口。我想在一個向另一個發(fā)送 JSON 對象的請求上創(chuàng)建一個發(fā)布請求。我正在使用 echo 框架（如果這很重要）我得到的錯誤是當(dāng)我嘗試為 post 對象編組對象時：2-valued json.Marshal(data) (value of type ([]byte, error)) where single value is expected服務(wù)器 1：type SendEmail struct { SenderName string `json:"senderName,omitempty" bson:"senderName,omitempty" validate:"required,min=3,max=128"` SenderEmail string `json:"senderEmail" bson:"senderEmail" validate:"required,min=10,max=128"` Subject string `json:"subject" bson:"subject" validate:"required,min=10,max=128"` RecipientName string `json:"recipientName" bson:"recipientName" validate:"required,min=3,max=128"` RecipientEmail string `json:"recipientEmail" bson:"recipientEmail" validate:"required,min=10,max=128"` PlainTextContent string `json:"plainTextContent" bson:"plainTextContent" validate:"required,min=10,max=512"`}func resetPassword(c echo.Context) error {email := c.Param("email") if email == "" { return c.String(http.StatusNotFound, "You have not supplied a valid email") } data := SendEmail{ RecipientEmail: email, RecipientName: email, SenderEmail: “test@test”, SenderName: “name”, Subject: "Reset Password", PlainTextContent: "Here is your code to reset your password, if you did not request this email then please ignore.", }// error here req, err := http.NewRequest("POST", "127.0.0.1:8081/", json.Marshal(data)) if err != nil { fmt.Println(err) } defer req.Body.Close() return c.JSON(http.StatusOK, email)}服務(wù)器 2：e.GET("/", defaultRoute)func defaultRoute(c echo.Context) (err error) { u := SendEmail{} if err = c.Bind(u); err != nil { return } return c.JSON(http.StatusOK, u)}
2 回答
慕仙森
TA貢獻1827條經(jīng)驗 獲得超8個贊
見到 Gopher 總是很高興。您可能想知道一些事情，Go 支持多值返回，因為一個函數(shù)可以返回多個值。
byteInfo, err := json.Marshal(data) // has two values returned
// check if there was an error returned first
if err != nil{
// handle your error here
}
現(xiàn)在在你的代碼下面的行
// error here
req, err := http.NewRequest("POST", "127.0.0.1:8081/", json.Marshal(data))
會變成這個
// error here
req, err := http.NewRequest("POST", "127.0.0.1:8081/", bytes.NewBuffer(byteInfo))
您可以繼續(xù)使用其余代碼?？鞓肪幋a！
慕婉清6462132
TA貢獻1804條經(jīng)驗 獲得超2個贊
json.Marshal返回[]byte，error這意味著您將 4 個值傳遞給http.NewRequest.
您應(yīng)該json.Marshal先調(diào)用，然后將結(jié)果用于http.NewRequest.
body, err := json.Marshal(data)
if err != nil {
// deal with error
}
req, err := http.NewRequest("POST", "127.0.0.1:8081/", body)
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