查看浏览器 here中运行的代码:
我究竟做错了什么 ?
我只需要MX记录,所以我没有定义其他字段.据我所知,你不需要定义你不使用/不需要的字段.
// You can edit this code!// Click here and start tyPing.package mainimport "fmt"import "enCoding/Json"func main() { body := ` {"response": { "status": "SUCCESS","data": { "mxRecords": [ { "value": "us2.mx3.mailhostBox.com.","ttl": 1,"priority": 100,"hostname": "@" },{ "value": "us2.mx1.mailhostBox.com.",{ "value": "us2.mx2.mailhostBox.com.","hostname": "@" } ],"cnameRecords": [ { "aliasHost": "pop.a.co.uk.","canonicalHost": "us2.pop.mailhostBox.com." },{ "aliasHost": "webmail.a.co.uk.","canonicalHost": "us2.webmail.mailhostBox.com." },{ "aliasHost": "smtp.a.co.uk.","canonicalHost": "us2.smtp.mailhostBox.com." },{ "aliasHost": "imap.a.co.uk.","canonicalHost": "us2.imap.mailhostBox.com." } ],"dkimTxtRecord": { "domainname": "20a19._domainkey.a.co.uk","value": "\"v=DKIM1; g=*; k=rsa; p=DkfbhO8Oyy0E1WyUWwIDAQAB\"","ttl": 1 },"spfTxtRecord": { "domainname": "a.co.uk","value": "\"v=spf1 redirect=_spf.mailhostBox.com\"","loginUrl": "us2.cp.mailhostBox.com" }}}` type MxRecords struct { value string ttl int priority int hostname string } type Data struct { mxRecords []MxRecords } type Response struct { Status string `Json:"status"` Data Data `Json:"data"` } type APIR struct { Response Response } var r APIR err := Json.Unmarshal([]byte(body),&r) if err != nil { fmt.Printf("err was %v",err) } fmt.Printf("decoded is %v",r)}根据go documentaiton about json.Unmarshal,你只能解码到导出的字段,主要原因是外部包(例如enCoding / Json)无法访问未导出的字段.
如果您的Json不遵循名称的go约定,则可以在字段中使用Json标记来更改Json键和struct字段之间的匹配.
例:
package mainimport ( "fmt" "enCoding/Json")type T struct { Foo string `Json:"foo"`}func main() { text := []byte(`{"foo":"bar"}`) var t T err := Json.Unmarshal(text,&t) if err != nil { panic(err) } fmt.Println(t)}总结
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