区块链教程基础开发通过接口查询币种的提币情况-dash

兄弟连区块链教程基础开发通过接口查询币种的提币情况-dash：
package main

import (
"encoding/json"
"fmt"
"math"

"github.com/buger/jsonparser"
"github.com/levigross/grequests"

)

const min = 0.000000000001

func isEqual(f1, f2 float64) bool {
if f1 < f2 {
return isEqual(f2, f1)
}
return math.Dim(f1, f2) < min
}

func HTTPGet(url string, requestOptions *grequests.RequestOptions) (response []byte, err error) {
httpResponse, err := grequests.Get(url, requestOptions)
if err == nil {
if httpResponse.StatusCode == 200 {
response = httpResponse.Bytes()
}
}
return
}

// DashBlocksChainCheck 根据提币的数量，提币方地址以及目标方地址来检查提币是否已经confirmed.
// 返回值有两个：提币状态以及已收到的提币数量（扣除手续费）
func DashBlocksChainCheck(withrawAmount float64, originalAddress string, targetAddress string) (status string, netWithdrawAmount float64, confirmations int64, err error) {
targetURL := fmt.Sprintf("https://api.blockcypher.com/v1/dash/main/addrs/%s/full", targetAddress)
bData, err := HTTPGet(targetURL, nil)
if err != nil {
fmt.Println("error: HTTPGet targetURL failed.")
return
}
transactions, , , err := jsonparser.Get(bData, "txs")
if err != nil {
fmt.Println("error: transaction.")
return
}
// fmt.Println(string(transactions))
_, err = jsonparser.ArrayEach(transactions, func(value []byte, dataType jsonparser.ValueType, offset int, e error) {
outs, , _, e := jsonparser.Get(value, "outputs")
fees, , _, e := jsonparser.Get(value, "fees")
confirmations, , _, e := jsonparser.Get(value, "confirmations")
fees, e := jsonparser.GetInt(_fees)
confirmations, e = jsonparser.GetInt(_confirmations)

    status = "online"
    jsonparser.ArrayEach(_outs, func(out []byte, dataType jsonparser.ValueType, offset int, e error) {
        _addr, _, _, e := jsonparser.Get(out, "addresses")
        _value, _, _, e := jsonparser.Get(out, "value")
        var outsAddr []string
        e = json.Unmarshal(_addr, &outsAddr)
        v, e := jsonparser.GetFloat(_value)
        if outsAddr[0] == targetAddress && v == withrawAmount {
            fmt.Println("fees: ", fees)
            status = "comfirmed"
            netWithdrawAmount = v
        }
    })
})
return

}

func main() {
status, netReceiveAmount, confirmations, err := DashBlocksChainCheck(10000000, "XrBtTsARPgGaqU3RsLtryFxDmaGkNPZdF8", "XnwjLMM2yGeK9tCSAwdkADjiGUaEotXaNV")
if err != nil {
fmt.Println("request failed...")
return
}
fmt.Println(fmt.Sprintf("status: %s, net_withdraw_amount: %f, confirmations: %d", status, netReceiveAmount, confirmations))
}

原文地址：http://blog.51cto.com/12918475/2295910