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。

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))
{"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 默认 escapeHtml 为 true,会转义 <、>、&
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
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
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
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())
{"Content":"http://www.baidu.com?id=123&test=1"}
Process finished with exit code 0
查看文档和源码还是解决问题的好方法
        
Go 语言是 Google 推出的一种全新的编程语言，可以在不损失应用程序性能的情况下降低代码的复杂性。谷歌首席软件工程师罗布派克（Rob Pike）说：我们之所以开发 Go，是因为过去 10 多年间软件开发的难度令人沮丧。Go 是谷歌 2009 发布的第二款编程语言。