Gin处理跨域问题

使用gin中间件，解决跨域问题

创建一个中间件  /middleware/CORESMiddleware.go

package middleware

import (
	"net/http"

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

func CORSMiddleware() gin.HandlerFunc {
	return func(ctx *gin.Context) {
		ctx.Writer.Header().Set("Access-Control-Allow-Origin", "*") //允许所有IP访问
		ctx.Writer.Header().Set("Access-Control-Max-Age", "86400")
		ctx.Writer.Header().Set("Access-Control-Allow-Headers", "*")
		ctx.Writer.Header().Set("Access-Control-Allow-Credentials", "true")

		if ctx.Request.Method == http.MethodOptions {
			ctx.AbortWithStatus(200)
		} else {
			ctx.Next()
		}
	}
}

把中间件添加到路由中去，重启程序

	r.Use(middleware.CORSMiddleware(),****)