英文:
Unable to send JSON as body for HTTP POST request in GO
问题
当我使用以下GO函数进行POST请求时，在服务器端会收到一个"invalid json"的错误。
如果我发送静态的JSON，例如：
var jsonprep = []byte(`{"username":"xyz@gmail.com","password":"xyz123"}`)
它可以正常工作，而不是：
var jsonprep string = "`{username:"+username+",password:"+password+"}`"
以下是函数的代码：
func makeHttpPostReq(url string, username string, password string){
client := http.Client{}
var jsonprep string = "`{username:"+username+",password:"+password+"}`"
var jsonStr = []byte(jsonprep)
req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonStr))
req.Header.Set("Content-Type", "application/json")
resp, err := client.Do(req)
if err != nil {
fmt.Println("无法连接到服务器。")
} else {
body, _ := ioutil.ReadAll(resp.Body)
fmt.Println("body=", string(body))
}
}
希望这可以帮助到你！
英文:
When i make the POST request using the below GO Function. I get a invalid json on the server side.
If i send static json for example
var jsonprep = []byte(`{"username":"xyz@gmail.com","password":"xyz123"}`)
it does work instead of
var jsonprep string = "`{username:"+username+",password:"+password+"}`"
.
func makeHttpPostReq(url string, username string, password string){
client := http.Client{}
var jsonprep string = "`{username:"+username+",password:"+password+"}`"
var jsonStr = []byte(jsonprep)
req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonStr))
req.Header.Set("Content-Type", "application/json")
resp, err := client.Do(req)
if err != nil {
fmt.Println("Unable to reach the server.")
} else {
body, _ := ioutil.ReadAll(resp.Body)
fmt.Println("body=", string(body))
}
}
答案1
得分: 7
你引用的方式有误：
http://play.golang.org/p/PueWyQ1atq
var jsonprep string = "`{username:"+username+",password:"+password+"}`"
===> `{username:Bob,password:pass}`
你的意思是：
http://play.golang.org/p/LMuwxArf8G
var jsonprep string = `{"username":"`+username+`","password":"`+password+`"}`
===> {"username":"Bob","password":"pass"}
英文:
You've got your quoting wrong:
http://play.golang.org/p/PueWyQ1atq
var jsonprep string = "`{username:"+username+",password:"+password+"}`"
===> `{username:Bob,password:pass}`
You meant:
http://play.golang.org/p/LMuwxArf8G
var jsonprep string = `{"username":"`+username+`","password":"`+password+`"}`
===> {"username":"Bob","password":"pass"}
答案2
得分: 2
如果你使用以下代码：
var jsonprep string = "`{username:"+username+",password:"+password+"}`"
服务器将会得到以下数据：
`{username:your_username,password:yourpassword}`
因为双引号内的反引号``不是原始字符串字面量，所以它是无效的JSON。你可以手动组合JSON字符串：
var jsonprep string = "{\"username\":\"" + username + "\",\"password\":\"" + password + "\"}"
英文:
If you use
var jsonprep string = "`{username:"+username+",password:"+password+"}`"
the server will get the data like this:
`{username:your_username,password:yourpassword}`
because the string in back quotes `` which is in the double quotes is not raw string literals, of course it's invalid json. you can compose the json string manually:
var jsonprep string = "{\"username\":\"" + username + "\",\"password\":\"" + password + "\"}"
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