58 lines
2.1 KiB
Go
58 lines
2.1 KiB
Go
package main
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import (
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"fmt"
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"regexp"
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"strconv"
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)
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func main() {
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// 1、字符串反向引用脱敏 ReplaceAllString
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mobileRe := regexp.MustCompile(`(\d{3})\d{4}(\d{4})`)
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phone := "12311111111"
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// $$ 转义输出单个字面$
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res1 := mobileRe.ReplaceAllString(phone, "前缀$$ $1****$2 后缀")
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fmt.Println("1.ReplaceAllString 手机号脱敏+$转义：", res1)
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// 命名捕获组搭配${name}格式
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nameRe := regexp.MustCompile(`姓名：(?P<name>[\p{Han}]+)`)
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userText := "姓名：王五"
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resName := nameRe.ReplaceAllString(userText, "用户${name}已登记")
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fmt.Println("命名捕获组替换：", resName)
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// 2、字面量&常规替换核心对比（带捕获组，差异肉眼可见）
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litStr := "价格$100，优惠$20"
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numRe := regexp.MustCompile(`(\d+)`)
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res2Normal := numRe.ReplaceAllString(litStr, "数值$1")
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res2Lit := numRe.ReplaceAllLiteralString(litStr, "数值$1")
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fmt.Println("2.ReplaceAllString 解析捕获组$1：", res2Normal)
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fmt.Println("2.ReplaceAllLiteralString 纯字面$1：", res2Lit)
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// 3、动态回调替换 ReplaceAllStringFunc
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priceText := "金额：10、20、50"
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res3 := numRe.ReplaceAllStringFunc(priceText, func(s string) string {
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val, _ := strconv.Atoi(s)
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return strconv.Itoa(val * 2)
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})
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fmt.Println("3.ReplaceAllStringFunc 数值翻倍：", res3)
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// ---------------------- []byte 字节系列替换API ----------------------
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bytePhone := []byte("12311111111")
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// 4.ReplaceAll 字节版反向引用
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resByte1 := mobileRe.ReplaceAll(bytePhone, []byte("$1****$2"))
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fmt.Println("4.ReplaceAll 字节脱敏：", string(resByte1))
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// 5.ReplaceAllLiteral 字节字面量演示
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byteSrc := []byte("积分30")
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resByte2 := numRe.ReplaceAllLiteral(byteSrc, []byte("分数$1"))
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fmt.Println("5.ReplaceAllLiteral 字节字面量：", string(resByte2))
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// 6.ReplaceAllFunc 字节回调自定义逻辑
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bytePrice := []byte("标价5 标价15")
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resByte3 := numRe.ReplaceAllFunc(bytePrice, func(b []byte) []byte {
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val, _ := strconv.Atoi(string(b))
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return []byte(strconv.Itoa(val + 10))
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})
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fmt.Println("6.ReplaceAllFunc 字节数值加10：", string(resByte3))
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}
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