docker 安裝 Jenkins
阿新 • • 發佈：2021-06-27
go語言提供了json的編解碼包，json字串作為引數值傳輸時發現，json.Marshal生成json特殊字元<、>、&會被轉義。
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type Test struct {
Content string
}
func main() {
t := new(Test)
t.Content = "http://www.baidu.com?id=123&test=1"
jsonByte, _ := json.Marshal(t)
fmt.Println(string(jsonByte))
}
|
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{"Content":"http://www.baidu.com?id=123\u0026test=1"}
Process finished with exit code 0
|
GoDoc描述
String values encode as JSON strings coerced to valid UTF-8,
replacing invalid bytes with the Unicode replacement rune.
The angle brackets “<” and “>” are escaped to “\u003c” and “\u003e”
to keep some browsers from misinterpreting JSON output as HTML.
Ampersand “&” is also escaped to “\u0026” for the same reason.
This escaping can be disabled using an Encoder that had SetEscapeHTML(false) alled on it.
json.Marshal 預設 escapeHtml 為true,會轉義 <、>、&
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func Marshal(v interface{}) ([]byte, error) {
e := &encodeState{}err := e.marshal(v, encOpts{escapeHTML: true})
if err != nil {
return nil, err
}
return e.Bytes(), nil
}
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解決方案
方法一：
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content = strings.Replace(content, "\\u003c", "<", -1)
content = strings.Replace(content, "\\u003e", ">", -1)
content = strings.Replace(content, "\\u0026", "&", -1)
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這種方式比較直接，硬性字串替換。比較憨厚
方法二：
文件中寫到This escaping can be disabled using an Encoder that had SetEscapeHTML(false) alled on it.
我們先建立一個buffer用於儲存json
建立一個jsonencoder
設定html編碼為false
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type Test struct {
Content string
}
func main() {
t := new(Test)
t.Content = "http://www.baidu.com?id=123&test=1"
bf := bytes.NewBuffer([]byte{})
jsonEncoder := json.NewEncoder(bf)
jsonEncoder.SetEscapeHTML(false)
jsonEncoder.Encode(t)
fmt.Println(bf.String())
}
|
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{"Content":"http://www.baidu.com?id=123&test=1"}
Process finished with exit code 0
|
檢視文件和原始碼還是解決問題的好方法。