golang gin解决跨域访问

??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()
????}
??}