英文:
GoLang Json FXCM
问题
为什么这段代码没有输出字符串？有人知道如何让这段代码工作吗？
package main
import (
"bytes"
"encoding/json"
"fmt"
)
type Tick struct {
Query string `json:"query"`
}
func main() {
data := &Tick{Query: "https://ratesjson.fxcm.com/DataDisplayer?&callback=Tick"}
buf := new(bytes.Buffer)
enc := json.NewEncoder(buf)
enc.SetEscapeHTML(true)
_ = enc.Encode(data)
fmt.Println(string(buf.Tick()))
fmt.Println("Done")
}
有人知道为什么这是无效的 JSON 或者为什么无法解析吗？或者指出如何修复让它工作？
package main
import (
"log"
"fmt"
"net/http"
"bytes"
"io/ioutil"
"github.com/pquerna/ffjson/ffjson"
)
type MsgRatesArray struct {
RateQuote []MsgRateQuoteJson `json:"Rates"`
}
type MsgRateQuoteJson struct {
SymbolName string `json:"Symbol"`
SymbolBid int64 `json:"Bid"`
SymbolAsk int64 `json:"Ask"`
SymbolSpread int64 `json:"Spread"`
SymbolPT string `json:"ProductType"`
}
var respBytes []byte
func main() {
var msg MsgRatesArray
response, err := http.Get("https://ratesjson.fxcm.com/DataDisplayer?&callback=Tick")
if err != nil {
log.Fatal(err)
}
defer response.Body.Close()
respBytes, err := ioutil.ReadAll(response.Body)
jsonBytes := respBytes[bytes.Index(respBytes, []byte("{")):bytes.LastIndex(respBytes, []byte("}"))+1]
jsonString := string(jsonBytes)
fmt.Println(jsonString)
err = ffjson.Unmarshal(jsonBytes, &msg)
if err != nil {
panic(err)
}
}
英文:
Why is this not dumping out the string? Anyone have any ideas how to get this code working?
package main
import (
"bytes"
"encoding/json"
"fmt"
)
type Tick struct {
Query string `json:"query"`
}
func main() {
data := &Tick{Query: "https://ratesjson.fxcm.com/DataDisplayer?&callback=Tick"}
buf := new(bytes.Buffer)
enc := json.NewEncoder(buf)
enc.SetEscapeHTML(true)
_ = enc.Encode(data)
fmt.Println(string(buf.Tick()))
fmt.Println("Done")
}
Anyone know why this is invalid json or why this can not be parsed? Or point out the fix how to make this work?
package main
import (
"log"
"fmt"
"net/http"
"bytes"
"io/ioutil"
"github.com/pquerna/ffjson/ffjson"
)
type MsgRatesArray struct {
RateQuote []MsgRateQuoteJson `json:"Rates"`
}
type MsgRateQuoteJson struct {
SymbolName string `json:"Symbol"`
SymbolBid int64 `json:"Bid"`
SymbolAsk int64 `json:"Ask"`
SymbolSpread int64 `json:"Spread"`
SymbolPT string `json:"ProductType"`
}
var respBytes []byte
func main() {
var msg MsgRatesArray
response,err := http.Get("https://ratesjson.fxcm.com/DataDisplayer?&callback=Tick")
if err != nil {
log.Fatal(err)
}
defer response.Body.Close()
respBytes, err := ioutil.ReadAll(response.Body)
jsonBytes := respBytes[bytes.Index(respBytes, []byte("{")):bytes.LastIndex(respBytes, []byte("}"))+1]
jsonString := string(jsonBytes)
fmt.Println(jsonString)
err = ffjson.Unmarshal(jsonBytes, &msg)
if err != nil {
panic(err)
}
}
答案1
得分: 0
执行自己的http请求以获取json数据，然后剥离非json内容（即第一个{之前和最后一个}之后的所有内容）：
response,err := http.Get("https://ratesjson.fxcm.com/DataDisplayer?&callback=Tick")
if err != nil {
log.Fatal(err)
}
defer response.Body.Close()
respBytes, err := ioutil.ReadAll(response.Body)
jsonBytes := respBytes[bytes.Index(respBytes, []byte("{")):bytes.LastIndex(respBytes, []byte("}"))+1]
jsonString := string(jsonBytes)
fmt.Println(jsonString)
https://play.golang.org/p/JyibZ3g6UA
英文:
Do your own http request to get the json, then strip out the non json stuff (everything before the first { and after the last }:
response,err := http.Get("https://ratesjson.fxcm.com/DataDisplayer?&callback=Tick")
if err != nil {
log.Fatal(err)
}
defer response.Body.Close()
respBytes, err := ioutil.ReadAll(response.Body)
jsonBytes := respBytes[bytes.Index(respBytes, []byte("{")):bytes.LastIndex(respBytes, []byte("}"))+1]
jsonString := string(jsonBytes)
fmt.Println(jsonString)
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论