first commit

middleware/gin.go

@@ -0,0 +1,43 @@
+package middleware
+
+import (
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"net/http"
+)
+
+func Cors() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		method := c.Request.Method
+		//origin := c.Request.Header.Get("Origin") //请求头部
+		//if origin != "" {
+		//接收客户端发送的origin （重要！）
+		c.Writer.Header().Set("Access-Control-Allow-Origin", "*")
+		c.Header("Access-Control-Allow-Origin", "*")
+		//服务器支持的所有跨域请求的方法
+		c.Header("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE,UPDATE")
+		//允许跨域设置可以返回其他子段，可以自定义字段
+		c.Header("Access-Control-Allow-Headers", "Authorization, Content-Length, X-CSRF-Token, Token,session")
+		// 允许浏览器（客户端）可以解析的头部 （重要）
+		c.Header("Access-Control-Expose-Headers", "Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers")
+		//设置缓存时间
+		c.Header("Access-Control-Max-Age", "172800")
+		//允许客户端传递校验信息比如 cookie (重要)
+		c.Header("Access-Control-Allow-Credentials", "true")
+		c.Set("content-type", "application/json")
+		//}
+
+		//允许类型校验
+		if method == "OPTIONS" {
+			c.JSON(http.StatusOK, "ok!")
+		}
+
+		defer func() {
+			if err := recover(); err != nil {
+				fmt.Println(err)
+			}
+		}()
+
+		c.Next()
+	}
+}