Golang如何替换正则表达式组中的字符串？

Question

我想替换字符串："hello [Jim], I'm [Sam]"至"hello [MR Jim], I'm [MR Sam]""[Greetings] hello [Jim], I'm [Sam]"至"[Greetings] hello [MR Jim], I'm [MR Sam]"我怎样才能通过 golang 正则表达式做到这一点？re := regexp.MustCompile(`hello [(\w+)], I'm [(\w+)]`)非常感谢！

Answer 1

如果您有一个 para 需要从中识别字符串，那么您可能可以使用两个正则表达式来实现它：

namePattern := `\[(\w+)\]`

replacerRegex := regexp.MustCompile(namePattern)

finderRegex := regexp.MustCompile("hello " + namePattern + ", I'm " + namePattern)

fmt.Println(re.ReplaceAllString(re1.FindString("hi hih hi hello [Jim], I'm [Sam]"), "[MR $1]"))

https://go.dev/play/p/kv6CfTv0-sk

编辑：

保留字符串其他部分的简单方法（PS：可以优化并需要检查边缘情况）

str := "pre string hello [Jim], I'm [Sam] post string"

namePattern := `\[(\w+)\]`

finderRegex := regexp.MustCompile("hello " + namePattern + ", I'm " + namePattern)

replacerRegex := regexp.MustCompile(namePattern)

// string part subject to replacement

str_rep := finderRegex.FindString(str)

// array of string holding the pre and post part ( check for str_rep as it could be empty)

strPart := strings.Split(str, str_rep)

replaced_str := replacerRegex.ReplaceAllString(str_rep, "[MR $1]")

// concat to get the final string (implement checks for edge cases)

finalStr := strPart[0] + replaced_str + strPart[1]

fmt.Println(finalStr)