Cannot convert `%26` to `&` in http url when using `httpx.Parse`

[jacksonjim]

Describe the bug A clear and concise description of what the bug is. 这是测试链接 http://127.0.0.1/api/v2/dev/test?dev=se205%5fy1205%5fj109%26verRelease=v01%26iid1=863494061186673%26iid2=863494061186681%26mcc=636%26mnc=1

请求后返回400错误，无法解析form中的参数 {"@timestamp":"2024-01-16T11:12:50.728+08:00","caller":"handler/loghandler.go:147","content":"[HTTP] 400

根踪了相关源码目前发现是调用这部分代码， if err := httpx.Parse(r, &req); err != nil { httpx.ErrorCtx(r.Context(), w, err) return } 深度追查，发现在是这里引起 func GetFormValues(r *http.Request) (map[string]any, error) { if err := r.ParseForm(); err != nil { return nil, err } ... }

目前能想到的解决方案是在调用这个转换参数函数 httpx.Parse()前调用 enEscapeUrl, _ := url.QueryUnescape(r.RequestURI) enRawQuery, _ := url.QueryUnescape(r.URL.RawQuery) r.RequestURI = enEscapeUrl r.URL.RawQuery = enRawQuery 这些处理下相关代码才可以正常识别出form的参数，所以希望能在官网库统一处理下，或是有更好的方式是在http url中增加处理这个转义字符识别处理

To Reproduce Steps to reproduce the behavior, if applicable:

1. The code is 修改验证的

   func TestHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
    return func(w http.ResponseWriter, r *http.Request) {
    	var req types.SendActivationReq
    	enEscapeUrl, _ := url.QueryUnescape(r.RequestURI)
    	enRawQuery, _ := url.QueryUnescape(r.URL.RawQuery)
    	r.RequestURI = enEscapeUrl
    	r.URL.RawQuery = enRawQuery
    	if err := httpx.Parse(r, &req); err != nil {
    		httpx.ErrorCtx(r.Context(), w, err)
    		return
    	}
   
    	l := device.NewSendActivationLogic(r.Context(), svcCtx)
    	resp, err := l.SendActivation(&req)
    	if err != nil {
    		httpx.ErrorCtx(r.Context(), w, err)
    	} else {
    		httpx.OkJsonCtx(r.Context(), w, resp)
    	}
    }
   

}

2. The error is
原始来生成的代码

func TestHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
	var req types.SendActivationReq
	if err := httpx.Parse(r, &req); err != nil {
		httpx.ErrorCtx(r.Context(), w, err)
		return
	}

	l := device.NewSendActivationLogic(r.Context(), svcCtx)
	resp, err := l.SendActivation(&req)
	if err != nil {
		httpx.ErrorCtx(r.Context(), w, err)
	} else {
		httpx.OkJsonCtx(r.Context(), w, resp)
	}
}

}

**Expected behavior**
A clear and concise description of what you expected to happen.

**Screenshots**
If applicable, add screenshots to help explain your problem.

**Environments (please complete the following information):**
- OS: window & linux
- go-zero version v1.6.0
- goctl version 1.2.5

**More description**
Add any other context about the problem here.

[ijustyce]

我也遇到了类似的问题，我在用 go 写一个兼容 nacos client 的注册中心+配置中心，在做配置监听时，nacos client 是将 如下字符串以 post 的形式提交，参数放在 body 中，参数类型：application/x-www-form-urlencoded Listening-Configs=dataId%02group%02contentMD5%02tenant%01 经过 debug 发现，这似乎并不是 go-zero 的问题，当然，最初是这么以为的，在关闭 gzip 的情况下，可拿到 urldecode 后的结果（乱码），然后我重新 encode 了下 好了。开启 gzip 时，请求 会 400

[kevwan]

Check #3888

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿

---

Check #3888

[jacksonjim]

测试下最新的版本v1.6.2 这个问题点还是存在，不知道什么时候会修复掉这小问题，可能部分场景会出现类似的情况

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿

---

After testing the latest version v1.6.2, this problem still exists. I don’t know when this small problem will be fixed. Similar situations may occur in some scenarios.