添加 BillBalanceQuery 接口

smartwalle · smartwalle · commit c9bce39eff62 · 2020-08-07T10:15:59.000+08:00
diff --git a/alipay.go b/alipay.go
@@ -9,14 +9,12 @@ import (
 	"encoding/hex"
 	"encoding/json"
 	"errors"
-	"fmt"
 	"github.com/smartwalle/crypto4go"
 	"io"
 	"io/ioutil"
 	"math"
 	"net/http"
 	"net/url"
-	"os"
 	"sort"
 	"strings"
 	"sync"
