add BAM

server/plugin/middleware/Cors.go

@@ -0,0 +1,42 @@
+package middleware
+
+import (
+	"github.com/gin-gonic/gin"
+	"log"
+	"net/http"
+)
+
+// Cors 开启跨域请求
+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", 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, Content-Type")
+			// 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, Content-Type")
+			//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")
+		}
+
+		//允许类型校验
+		if method == "OPTIONS" {
+			c.JSON(http.StatusOK, "ok!")
+		}
+
+		defer func() {
+			if err := recover(); err != nil {
+				log.Printf("Panic info is: %v\n", err)
+			}
+		}()
+
+		c.Next()
+	}
+}