Golang API 响应 400

Question

每次我尝试运行它时我都看不到是我的错误当我打印一些关键变量时我什么也没得到：

打印长网址

http://www.example.com

打印和输出

&{400 错误请求 400 HTTP/1.1 1 1 map[X-Frame-Options:[SAMEORIGIN] X-Xss-保护：[1;模式=块] 服务器：[GSE] 替代协议：[443:quic] 内容类型：[application/json; charset=UTF-8] 日期：[星期四，2014 年 6 月 12 日 02:10:33 GMT] 过期时间：[星期四，12 2014 年 6 月 02:10:33 GMT] 缓存控制：[private, max-age=0] X-Content-Type-Options:[nosniff]] 0xc2100fe940 -1 [chunked] false 地图[] 0xc2100581a0}

// c0de urlShort


package main

import (
    "bytes"
    "encoding/json"
    "fmt"
    "io/ioutil"
    "log"
    "net/http"
    "os"
)

type apiResponse struct {
    Id, Kind, LongURL string
}

func main() {

    longURL := os.Args[len(os.Args)-1]

    body := bytes.NewBufferString(fmt.Sprintf(
        `{"longURL":"%s"}`,
        longURL))

    request, err := http.NewRequest(
        "POST",
        "https://www.googleapis.com/urlshortener/v1/url",
        body)

    request.Header.Add("Content-Type", "application/json")

    client := http.Client{}

    response, err := client.Do(request)

    if err != nil {
        log.Fatal(err)
    }

    outputAsBytes, err := ioutil.ReadAll(response.Body)
    response.Body.Close()

    var output apiResponse
    err = json.Unmarshal(outputAsBytes, &output)

    if err != nil {
        log.Fatal(err)
    }

    fmt.Printf("%s", output.Id)

}

Answer 1

您得到的不是正常响应，而是：

{
 "error": {
  "errors": [
   {
    "domain": "global",
    "reason": "required",
    "message": "Required",
    "locationType": "parameter",
    "location": "resource.longUrl"
   }
  ],
  "code": 400,
  "message": "Required"
 }
}

它说您缺少必需的参数：longUrl。请注意，它是长 Url 而不是长 URL

此代码适用于我：

package main

import (
    "bytes"
    "encoding/json"
    "fmt"
    "io/ioutil"
    "log"
    "net/http"
    "os"
)

type apiResponse struct {
    Id, Kind, LongURL string
}

func main() {

    longURL := os.Args[len(os.Args)-1]

    body := bytes.NewReader([]byte(fmt.Sprintf(
        `{"longUrl":"%s"}`,
        longURL)))


    request, err := http.NewRequest(
        "POST",
        "https://www.googleapis.com/urlshortener/v1/url",
        body)

    request.Header.Add("Content-Type", "application/json")

    client := http.Client{}

    response, err := client.Do(request)

    if err != nil {
        log.Fatal(err)
    }

    outputAsBytes, err := ioutil.ReadAll(response.Body)
    response.Body.Close()

    fmt.Println(string(outputAsBytes))

    var output apiResponse
    err = json.Unmarshal(outputAsBytes, &output)

    if err != nil {
        log.Fatal(err)
    }

    fmt.Printf("%s", output)

}