英文:
Removed fieldname id and reformat JSON Output in golang
问题
我正在使用基于 /v1/public/characters 的 Marvel API 开发一个使用 Golang 的 REST API。我需要以以下格式返回所有角色的 ID：
[ 1011234, 1012345, 1009213, 1010788, 1087123, 1222345, ... ]
我通过使用 strings.NewReplacer 来实现这个目标（在下面的最后两行代码中）。
...
type CharacterId struct {
Data struct {
Results []struct {
Id int `json:"id"`
} `json:"results"`
} `json:"data"`
}
func getCharacters(w http.ResponseWriter, _ *http.Request) {
ts := strconv.FormatInt(time.Now().Unix(), 10)
hash := getMd5(ts + conf.privateKey + conf.publicKey)
response, err := http.Get("https://gateway.marvel.com/v1/public/characters?ts=" + ts + "&apikey=" + conf.publicKey + "&hash=" + hash + "&limit=100")
if err != nil {
log.Fatal(err)
}
defer response.Body.Close()
responseBytes, err := ioutil.ReadAll(response.Body)
if err != nil {
log.Fatal(err)
}
var characterId CharacterId
err = json.Unmarshal(responseBytes, &characterId)
if err != nil {
log.Fatal(err)
return
}
data, err := json.Marshal(characterId.Data.Results)
replacer := strings.NewReplacer("\"id\":", "", "{", "", "}", "", ",", ", ", "[", "[ ")
fmt.Fprint(w, replacer.Replace(string(data)))
}
如果不使用像上面代码片段中的 strings.NewReplacer，即直接使用 fmt.Fprint(w, string(data))，会得到以下输出，这不是我想要的结果。
[{"id":1011334},{"id":1017100},{"id":1009144},{"id":1010699},{"id":1009146},{"id":1016823},{"id":1009148},{"id":1009149}, ... ]
我有点觉得我使用 strings.NewReplacer 的方式不够干净/合适。有人能否提供一个更好的方法来得到我想要的输出？
英文:
I am developing a rest api using golang based on /v1/public/characters of Marvel API. I need to return all the character ids in the format of
[ 1011234, 1012345, 1009213, 1010788, 1087123, 1222345, ... ]
The way I achieve this is via strings.NewReplacer (in last 2 lines below).
...
type CharacterId struct {
Data struct {
Results []struct {
Id int `json:"id"`
} `json:"results"`
} `json:"data"`
}
func getCharacters(w http.ResponseWriter, _ *http.Request) {
ts := strconv.FormatInt(time.Now().Unix(), 10)
hash := getMd5(ts + conf.privateKey + conf.publicKey)
response, err := http.Get("https://gateway.marvel.com/v1/public/characters?ts=" + ts + "&apikey=" + conf.publicKey + "&hash=" + hash + "&limit=100")
if err != nil {
log.Fatal(err)
}
defer response.Body.Close()
responseBytes, err := ioutil.ReadAll(response.Body)
if err != nil {
log.Fatal(err)
}
var characterId CharacterId
err = json.Unmarshal(responseBytes, &characterId)
if err != nil {
log.Fatal(err)
return
}
data, err := json.Marshal(characterId.Data.Results)
replacer := strings.NewReplacer("\"id\":", "", "{", "", "}", "", ",", ", ", "[", "[ ")
fmt.Fprint(w, replacer.Replace(string(data)))
}
Without using strings.NewReplacer like the code snippet above, i.e. fmt.Fprint(w, string(data)) directly gives me the output below which is not what I want.
[{"id":1011334},{"id":1017100},{"id":1009144},{"id":1010699},{"id":1009146},{"id":1016823},{"id":1009148},{"id":1009149}, ... ]
I somehow feel my way of using strings.NewReplacer is not a clean/proper way. Can anyone suggest a better way of making the output I want?
答案1
得分: 1
创建一个名为int array的数组，其中包含你的ID，并将其编组并写入响应中。
用以下代码替换你的最后三行，并进行测试。
var data []int
for _, result := range characterId.Data.Results {
data = append(data, result.Id)
}
c , err := json.Marshal(data)
if err != nil {
//在这里处理错误
}
fmt.Fprint(w, string(c))
英文:
Create int array with your IDs and marshal it and write it to your response.
Replace your last tree lines with following code and test.
var data []int
for _, result := range characterId.Data.Results {
data = append(data, result.Id)
}
c , err := json.Marshal(data)
if err != nil {
//handle error here
}
fmt.Fprint(w, string(c))
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