golang json.Marshal 特殊html字符被转义的解决方法
go语言提供了json的编解码包，json字符串作为参数值传输时发现，json.Marshal生成json特殊字符<、>、&会被转义。
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type Test struct { Content string}func main() { t := new(Test) jsonByte, _ := json.Marshal(t) fmt.Println(string(jsonByte))} |
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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 默认 escapeHtml 为true,会转义 <、>、&
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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} |
解决方案
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) |
这种方式比较直接，硬性字符串替换。比较憨厚
方法二：
文档中写到This escaping can be disabled using an Encoder that had SetEscapeHTML(false) alled on it.
我们先创建一个buffer用于存储json
创建一个jsonencoder
设置html编码为false
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type Test struct { Content string}func main() { t := new(Test) bf := bytes.NewBuffer([]byte{}) jsonEncoder := json.NewEncoder(bf) jsonEncoder.SetEscapeHTML(false) jsonEncoder.Encode(t) fmt.Println(bf.String())} |
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Process finished with exit code 0 |
查看文档和源码还是解决问题的好方法。
