英文:
New to Go, trying to sort out how to process JSON
问题
从Python、Ruby和JS等语言过来，我现在真的在使用Go时遇到了很多困难。它感觉过于复杂，但我希望我只是漏掉了什么。
目前，我有一段代码可以成功调用波士顿的MBTA API（使用他们的公共开发者密钥）并返回所有路线信息。
我已经在这里放置了代码：http://pastebin.com/PkBaP714 和 http://pastebin.com/7mRxgrpp
返回的示例数据：http://pastebin.com/M2hzMKYs
我想要返回两件事情：1）仅仅是每个route_type和mode_name，以及2）当调用route_type时，每个route_id和route_name。
出于某种原因，我完全迷失了。我已经花了16个小时盯着文档，感觉就像在看外语：）。
也许要求具体的帮助有点过分，但我会非常感激的。
英文:
Coming from languages like Python, Ruby, and JS, I am really struggling with Go right now. It feels overly complex, but I am hoping I am just missing something.
Right now I have code that can successfully call Boston's MBTA API (using their public developer key) and return all route information.
I have dropped the code here: http://pastebin.com/PkBaP714 and here: http://pastebin.com/7mRxgrpp
Sample data returned: http://pastebin.com/M2hzMKYs
I want to return two things 1) JUST each route_type and mode_name, and 2) when route_type is called each of the route_id and route_name.
For whatever reason I am just totally lost. I've spent 16 hours staring at documentation and I feel like I am looking at a foreign language :).
It may be too much to ask for specific help, but I would LOVE IT.
答案1
得分: 1
只需将它们映射到一个新类型：
func main() {
flag.Parse()
c := gombta.Client{APIKey: apikey, URL: apiurl}
// 按类型获取路由列表
d, err := c.GetRoutes(format)
check(err)
var toPrint interface{}
if typeid == 9999 {
type Result struct {
RouteType string `json:"route_type"`
ModeName string `json:"mode_name"`
}
rs := []Result{}
for _, m := range d.Mode {
rs = append(rs, Result{
RouteType: m.RouteType,
ModeName: m.ModeName,
})
}
toPrint = rs
} else {
type Result struct {
RouteID string `json:"route_id"`
RouteName string `json:"route_name"`
}
rs := []Result{}
for _, m := range d.Mode {
if fmt.Sprint(typeid) == m.RouteType {
for _, r := range m.Route {
rs = append(rs, Result{
RouteID: r.RouteID,
RouteName: r.RouteName,
})
}
}
}
toPrint = rs
}
j, err := json.MarshalIndent(toPrint, "", " ")
fmt.Printf("RouteTypes: ")
os.Stdout.Write(j)
}
英文:
Just map them to a new type:
func main() {
flag.Parse()
c := gombta.Client{APIKey: apikey, URL: apiurl}
// get a list of routes by type
d, err := c.GetRoutes(format)
check(err)
var toPrint interface{}
if typeid == 9999 {
type Result struct {
RouteType string `json:"route_type"`
ModeName string `json:"mode_name"`
}
rs := []Result{}
for _, m := range d.Mode {
rs = append(rs, Result{
RouteType: m.RouteType,
ModeName: m.ModeName,
})
}
toPrint = rs
} else {
type Result struct {
RouteID string `json:"route_id"`
RouteName string `json:"route_name"`
}
rs := []Result{}
for _, m := range d.Mode {
if fmt.Sprint(typeid) == m.RouteType {
for _, r := range m.Route {
rs = append(rs, Result{
RouteID: r.RouteID,
RouteName: r.RouteName,
})
}
}
}
toPrint = rs
}
j, err := json.MarshalIndent(toPrint, "", " ")
fmt.Printf("RouteTypes: ")
os.Stdout.Write(j)
}
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