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golang json 'true' is not True?

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2024-02-10 12:00:11483browse

golang json\'true\'不是True?

php editor Xigua today will answer a question about golang: "Isn't json 'true' in golang True?" In golang, the Unmarshal function in the json package When parsing JSON data into a Go language structure, 'true' is not equal to True for Boolean type values. This is because in JSON, Boolean type values ​​are represented by lowercase 'true' and 'false', while in Go language, Boolean type values ​​are represented by uppercase True and False. This subtle difference may cause some problems and confusion, so we need to pay attention to this difference when using golang to parse JSON data.

Question content

I just learned golang, convert json to struct, and get the boolean value is always false. If my json "remembers": true, the resulting boolean value is true, how to solve it? My code

package main

import (
    "encoding/json"
    "fmt"
)

type AdminInfoRequest struct {
    Id          uint   `json:"id"`
    UserName    string `json:"username"`
    Password    string `json:"password"`
    CaptchaId   string `json:"captcha_id"`
    Captcha     string `json:"captcha"`
    Remember    bool   `json:"remember"`
    Status      uint   `json:"status"`
    GroupId     uint   `json:"group_id"`
    OldPassword string `json:"old_password"`
    RePassword  string `json:"re_password"`
}

func main() {
    var s AdminInfoRequest
    j := `{"username":"admin","remember":"true"}`
    json.Unmarshal([]byte(j), &s)
    fmt.Println(s.UserName)
    fmt.Println(s.Remember)
}

Solution

In json, "true" is a string value. Try this:

j := `{"username":"admin","remember":true}`

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