英文:
How do I make raw unicode encoded content readable?
问题
我使用net/http请求了一个Web API，服务器返回了一个JSON响应。当我打印响应体时，它显示为原始的ASCII内容。我尝试使用bufio.ScanRunes来解析内容，但失败了。
我还尝试编写了一个简单的服务器并返回了一个Unicode字符串，结果运行良好。
以下是核心代码：
func (c ClientInfo) Request(method string, url string, form url.Values) string {
req, _ := http.NewRequest(method, url, strings.NewReader(c.Encode(form)))
req.Header = c.Header
req.AddCookie(&c.Cookie)
resp, err := http.DefaultClient.Do(req)
defer resp.Body.Close()
if err != nil {
fmt.Println(err)
}
scanner := bufio.NewScanner(resp.Body)
scanner.Split(bufio.ScanRunes)
var buf bytes.Buffer
for scanner.Scan() {
buf.WriteString(scanner.Text())
}
rv := buf.String()
fmt.Println(rv)
return rv
}
以下是示例输出：
{"forum":{"id":"3251718","name":"合肥工业大学宣城校区","first_class":"高等院校","second_class":"安徽院校","is_like":"0","user_level":"1","level_id":"1","level_name":"素未谋面","cur_score":"0","levelup_score":"5","member_num":"80329","is_exists":"1","thread_num":"108762","post_num":"3445881","good_classify":[{"class_id":"0","class_name":"全部"},{"class_id":"1","class_name":"公告类"},{"class_id":"2","class_name":"吧友专区"},{"class_id":"4","class_name":"活动专区"},{"class_id":"6","class_name":"社团班级"},{"class_id":"5","class_name":"资源共享"},{"class_id":"8","class_name":"温馨生活类"},{"class_id":"7","class_name":"咨询新闻类"},{"class_id":"3","class_name":"风采展示区"}],"managers":[{"id":"793092593","name":"yi损明定的忧伤"},
...
以上是翻译好的内容。
<details>
<summary>英文:</summary>
I used `net/http` request a web API and the server returned a JSON response. When I print the response body, it displayed as raw ASCII content. I tried using `bufio.ScanRunes` to parse the content but failed.
I also tried write a simple server and return a unicode string and it worked well.
Here is the core code:
func (c ClientInfo) Request(method string, url string, form url.Values) string {
req, _ := http.NewRequest(method, url, strings.NewReader(c.Encode(form)))
req.Header = c.Header
req.AddCookie(&c.Cookie)
resp, err := http.DefaultClient.Do(req)
defer resp.Body.Close()
if err != nil {
fmt.Println(err)
}
scanner := bufio.NewScanner(resp.Body)
scanner.Split(bufio.ScanRunes)
var buf bytes.Buffer
for scanner.Scan() {
buf.WriteString(scanner.Text())
}
rv := buf.String()
fmt.Println(rv)
return rv
}
Here is the example output:
> {"forum":{"id":"3251718","name":"\u5408\u80a5\u5de5\u4e1a\u5927\u5b66\u5ba3\u57ce\u6821\u533a","first_class":"\u9ad8\u7b49\u9662\u6821","second_class":"\u5b89\u5fbd\u9662\u6821","is_like":"0","user_level":"1","level_id":"1","level_name":"\u7d20\u672a\u8c0b\u9762","cur_score":"0","levelup_score":"5","member_num":"80329","is_exists":"1","thread_num":"108762","post_num":"3445881","good_classify":[{"class_id":"0","class_name":"\u5168\u90e8"},{"class_id":"1","class_name":"\u516c\u544a\u7c7b"},{"class_id":"2","class_name":"\u5427\u53cb\u4e13\u533a"},{"class_id":"4","class_name":"\u6d3b\u52a8\u4e13\u533a"},{"class_id":"6","class_name":"\u793e\u56e2\u73ed\u7ea7"},{"class_id":"5","class_name":"\u8d44\u6e90\u5171\u4eab"},{"class_id":"8","class_name":"\u6e29\u99a8\u751f\u6d3b\u7c7b"},{"class_id":"7","class_name":"\u54a8\u8be2\u65b0\u95fb\u7c7b"},{"class_id":"3","class_name":"\u98ce\u91c7\u5c55\u793a\u533a"}],"managers":[{"id":"793092593","name":"yi\u62b9\u660e\u5a9a\u7684\u5fe7\u4f24"},
>
> ...
</details>
# 答案1
**得分**: 2
这只是转义任何Unicode字符的标准方法。
将其解组以查看未引用的文本（[`json`][1]包将对其进行解引用）：
```go
func main() {
var i interface{}
err := json.Unmarshal([]byte(src), &i)
fmt.Println(err, i)
}
const src = `{"forum":{"id":"3251718","name":"合肥工业大学宣城校区","first_class":"高等院校","second_class":"安徽院校","is_like":"0","user_level":"1","level_id":"1","level_name":"素未谋面","cur_score":"0","levelup_score":"5","member_num":"80329","is_exists":"1","thread_num":"108762","post_num":"3445881","good_classify":[{"class_id":"0","class_name":"全部"},{"class_id":"1","class_name":"公告类"},{"class_id":"2","class_name":"吧友专区"},{"class_id":"4","class_name":"活动专区"},{"class_id":"6","class_name":"社团班级"},{"class_id":"5","class_name":"资源共享"},{"class_id":"8","class_name":"温馨生活类"},{"class_id":"7","class_name":"咨询新闻类"},{"class_id":"3","class_name":"风采展示区"}]}}`
输出（已修剪）（在Go Playground上尝试）：
<nil> map[forum:map[levelup_score:5 is_exists:1 post_num:3445881 good_classify:[map[class_id:0 class_name:全部] map[class_id:1 class_name:公告类] map[class_id:2 class_name:吧友专区] map[class_id:4 class_name:活动专区] map[class_id:6 class_name:社团班级] map[class_id:5 class_name:资源共享] map[class_id:8 class_name:温馨生活类] map[class_name:咨询新闻类 class_id:7] map[class_id:3 class_name:风采展示区]] id:3251718 is_like:0 cur_score:0
如果您只想取消引用片段，可以使用strconv.Unquote()：
fmt.Println(strconv.Unquote(`"\u7d20\u672a\u8c0b"`))
输出（在Go Playground上尝试）：
素未谋 <nil>
请注意，strconv.Unquote()期望一个带引号的string，这就是为什么我使用原始字符串字面量的原因，这样我可以添加引号，而且编译器本身不会解释/取消引用Unicode转义。
相关问题请参见：https://stackoverflow.com/questions/36528575/how-to-convert-escape-characters-in-html-tags/36529158#36529158
英文:
That is just the standard way to escape any Unicode character.
Unmarshal it to see the unquoted text (the json package will unquote it):
func main() {
var i interface{}
err := json.Unmarshal([]byte(src), &i)
fmt.Println(err, i)
}
const src = `{"forum":{"id":"3251718","name":"\u5408\u80a5\u5de5\u4e1a\u5927\u5b66\u5ba3\u57ce\u6821\u533a","first_class":"\u9ad8\u7b49\u9662\u6821","second_class":"\u5b89\u5fbd\u9662\u6821","is_like":"0","user_level":"1","level_id":"1","level_name":"\u7d20\u672a\u8c0b\u9762","cur_score":"0","levelup_score":"5","member_num":"80329","is_exists":"1","thread_num":"108762","post_num":"3445881","good_classify":[{"class_id":"0","class_name":"\u5168\u90e8"},{"class_id":"1","class_name":"\u516c\u544a\u7c7b"},{"class_id":"2","class_name":"\u5427\u53cb\u4e13\u533a"},{"class_id":"4","class_name":"\u6d3b\u52a8\u4e13\u533a"},{"class_id":"6","class_name":"\u793e\u56e2\u73ed\u7ea7"},{"class_id":"5","class_name":"\u8d44\u6e90\u5171\u4eab"},{"class_id":"8","class_name":"\u6e29\u99a8\u751f\u6d3b\u7c7b"},{"class_id":"7","class_name":"\u54a8\u8be2\u65b0\u95fb\u7c7b"},{"class_id":"3","class_name":"\u98ce\u91c7\u5c55\u793a\u533a"}]}}`
Output (trimmed) (try it on the Go Playground):
If you just want to unquote a fragment, you may use strconv.Unquote():
fmt.Println(strconv.Unquote(`"\u7d20\u672a\u8c0b"`))
Output (try it on the Go Playground):
素未谋 <nil>
Note that strconv.Unquote() expects a string that is in quotes, that's why I used a raw string literal, so I could add quotes, and also so that the compiler itself will not interpret / unquote the Unicode escapes.
See related question: https://stackoverflow.com/questions/36528575/how-to-convert-escape-characters-in-html-tags/36529158#36529158
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