调整oppo支付，不引用外部包

package/pay/oppo/notify.go

@@ -0,0 +1,32 @@
+package oppo
+
+import (
+	"net/http"
+	"net/url"
+)
+
+func (p *OppoType) ParseNotifyToBodyMap(req *http.Request) (bm map[string]interface{}, err error) {
+	if err = req.ParseForm(); err != nil {
+		return nil, err
+	}
+	var form map[string][]string = req.Form
+	bm = make(map[string]interface{}, len(form)+1)
+	for k, v := range form {
+		if len(v) == 1 {
+			bm[k] = v[0]
+			//bm.Set(k, v[0])
+		}
+	}
+	return
+}
+
+func (p *OppoType) ParseNotifyByURLValues(value url.Values) (bm map[string]interface{}, err error) {
+	bm = make(map[string]interface{}, len(value)+1)
+	for k, v := range value {
+		if len(v) == 1 {
+			bm[k] = v[0]
+			//bm.Set(k, v[0])
+		}
+	}
+	return
+}