package main
import (
	"fmt"
	"net/url"
)
// Manage the HTTP GET request parameters
type GetRequest struct {
	urls url.Values
}
// Initializer
func (p *GetRequest) Init() *GetRequest {
	p.urls = url.Values{}
	return p
}
// Initialized from another instance
func (p *GetRequest) InitFrom(reqParams *GetRequest) *GetRequest {
	if reqParams != nil {
		p.urls = reqParams.urls
	} else {
		p.urls = url.Values{}
	}
	return p
}
// Add URL escape property and value pair
func (p *GetRequest) AddParam(property string, value string) *GetRequest {
	if property != "" && value != "" {
		p.urls.Add(property, value)
	}
	return p
}
// Concat the property and value pair
func (p *GetRequest) BuildParams() string {
	return p.urls.Encode()
}
func main() {
	init := new(GetRequest).Init()
	params := init.AddParam("market", "sh").AddParam("Inst","6000987").BuildParams()
	//params := init.AddParam("market", "sh")
	fmt.Println(params)
}

//JoinStringsInASCII 按照规则，参数名ASCII码从小到大排序后拼接
//data 待拼接的数据
//sep 连接符
//onlyValues 是否只包含参数值，true则不包含参数名，否则参数名和参数值均有
//includeEmpty 是否包含空值，true则包含空值，否则不包含，注意此参数不影响参数名的存在
//exceptKeys 被排除的参数名，不参与排序及拼接
func JoinStringsInASCII(data map[string]string, sep string, onlyValues, includeEmpty bool, exceptKeys ...string) string {
 var list []string
 var keyList []string
 m := make(map[string]int)
 if len(exceptKeys) > 0 {
 for _, except := range exceptKeys {
  m[except] = 1
 }
 }
 for k := range data {
 if _, ok := m[k]; ok {
  continue
 }
 value := data[k]
 if !includeEmpty && value == "" {
  continue
 }
 if onlyValues {
  keyList = append(keyList, k)
 } else {
  list = append(list, fmt.Sprintf("%s=%s", k, value))
 }
 }
 if onlyValues {
 sort.Strings(keyList)
 for _,v := range keyList {
  list = append(list,data[v])
 }
 }else {
 sort.Strings(list)
 }
 return strings.Join(list, sep)
}

 data := make(map[string]string)
 data["appid"] = "wx_1234535"
 data["body"] = "test data"
 data["mch_id"] = "572836589"
 data["notify_url"] = "http://www.baidu.com"
 data["trade_type"] = "MWEB"
 data["spbill_create_ip"] = "192.169.0.1"
 data["total_fee"] = "100"
 data["out_trade_no"] = "2745890486870"
 data["nonce_str"] = "kdjskgjokghdk"
 data["sign"] = "signData"
 log.Println("str :", JoinStringsInASCII(data, "&", false, false, "sign"))
 log.Println("str2 :", JoinStringsInASCII(data, "&", true, false, "sign"))

str : appid=wx_1234535&body=test data&mch_id=572836589&nonce_str=kdjskgjokghdk&notify_url=http://www.baidu.com&out_trade_no=2745890486870&spbill_create_ip=192.169.0.1&total_fee=100&trade_type=MWEB
str2 : wx_1234535&test data&572836589&kdjskgjokghdk&http://www.baidu.com&2745890486870&192.169.0.1&100&MWEB

//JoinStringsInOrder 数名按固定顺序排列后拼接
//data 待拼接的数据
//sep 连接符
//onlyValues 是否只包含参数值，true则不包含参数名，否则参数名和参数值均有
//orders 按照顺序的参数名，没有的不参与拼接
func JoinStringsInOrder(data map[string]string, sep string,onlyValues bool, orders ...string) string {
 var list []string
 for _, key := range orders {
 if _,ok := data[key];!ok {
  continue
 }
 if onlyValues {
  list = append(list, data[key])
 }else {
  list = append(list, fmt.Sprintf("%s=%s", key, data[key]))
 }
 }
 return strings.Join(list, sep)
}