golang gin解决跨域访问

package middleware

import (
   "github.com/gin-gonic/gin"
   "net/http"
)

func Cors() gin.HandlerFunc {
   return func(c *gin.Context) {
      method := c.Request.Method

      c.Header("Access-Control-Allow-Origin", "*")
      c.Header("Access-Control-Allow-Headers", "Content-Type,AccessToken,X-CSRF-Token, Authorization, Token")
      c.Header("Access-Control-Allow-Methods", "POST, GET, OPTIONS")
      c.Header("Access-Control-Expose-Headers", "Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers, Content-Type")
      c.Header("Access-Control-Allow-Credentials", "true")

      //放行所有OPTIONS方法
      if method == "OPTIONS" {
         c.AbortWithStatus(http.StatusNoContent)
      }
      // 处理请求
      c.Next()
   }
}

调用中间件前:

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