英文:
Parsing complex JSON with Go
问题
我在使用Go语言处理一些嵌套的JSON时遇到了问题。我的主要问题是无法正确建模我的结构体，以便尝试从库中提取任何信息。这是JSON数据的示例：http://pastebin.com/fcGQqi5z
这些数据来自一家银行，并已经进行了隐私处理。理想情况下，我只对交易ID、金额和描述感兴趣。有没有办法使用Go语言只提取这些值？
这是我的初始尝试：
type Trans struct {
TransId string
Amount int
Description string
}
英文:
I'm having issues digesting some nested JSON with Go. My primary issue is that I can't model my struct correctly to try and get the library to pull any information in. Here is a sample of the JSON data: http://pastebin.com/fcGQqi5z
The data is from a bank and has been scrubbed for privacy. Ideally I'm only interested in the transactions ID, the amount, and the description. Is there a way to just pull these values with Go?
This was my initial attempt:
type Trans struct {
TransId string
Amount int
Description string
}
答案1
得分: 1
以下是您提供的代码的中文翻译：
type Records struct {
Records []Record `json:"record"`
}
type Record struct {
TransId string
Amount float64
Description string
}
func main() {
r := Records{}
if err := json.Unmarshal([]byte(data), &r); err != nil {
log.Fatal(err)
}
fmt.Println(r)
}
希望对您有所帮助！
英文:
type Records struct {
Records []Record `json:"record"`
}
type Record struct {
TransId string
Amount float64
Description string
}
func main() {
r := Records{}
if err := json.Unmarshal([]byte(data), &r); err != nil {
log.Fatal(err)
}
fmt.Println(r)
}
答案2
得分: 1
你在正确的轨道上：
type Trans struct {
TransId string
Amount float64
Description string
}
func main() {
var data struct {
Record []Trans
}
if err := json.Unmarshal([]byte(j), &data); err != nil {
fmt.Println(err)
return
}
fmt.Printf("%#v\n", data.Record)
}
//edit
type Trans struct {
TransId string
Amount float64
Description string
RawInfo []map[string]json.RawMessage `json:"AdditionalInfo"`
}
// also this assumes that 1. all data are strings and 2. they have unique keys
// if this isn't the case, you can use map[string][]string or something
func (t *Trans) AdditionalInfo() (m map[string]string) {
m = make(map[string]string, len(t.RawInfo))
for _, info := range t.RawInfo {
for k, v := range info {
m[k] = string(v)
}
}
return
}
[playground](http://play.golang.org/p/PP_aFbWCkL)
英文:
You were on the right tracks:
type Trans struct {
TransId string
Amount float64
Description string
}
func main() {
var data struct {
Record []Trans
}
if err := json.Unmarshal([]byte(j), &data); err != nil {
fmt.Println(err)
return
}
fmt.Printf("%#v\n", data.Record)
}
//edit
type Trans struct {
TransId string
Amount float64
Description string
RawInfo []map[string]json.RawMessage `json:"AdditionalInfo"`
}
// also this assumes that 1. all data are strings and 2. they have unique keys
// if this isn't the case, you can use map[string][]string or something
func (t *Trans) AdditionalInfo() (m map[string]string) {
m = make(map[string]string, len(t.RawInfo))
for _, info := range t.RawInfo {
for k, v := range info {
m[k] = string(v)
}
}
return
}
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