Go gin验证输入以排除子字符串

package main

import (
    "net/http"
    "regexp"

    "github.com/gin-gonic/gin"
)

func main() {
    router := gin.Default()

    router.GET("/search", func(c *gin.Context) {
        // 获取输入参数
        query := c.Query("q")

        // 定义要排除的子字符串
        excludedString := "admin"

        // 使用正则表达式验证输入
        match, _ := regexp.MatchString(excludedString, query)

        if match {
            c.JSON(http.StatusBadRequest, gin.H{
                "error": "Invalid input",
            })
            return
        }

        // 处理正常情况
        c.JSON(http.StatusOK, gin.H{
            "message": "Valid input",
        })
    })

    router.Run(":8080")
}