Golnag Gin框架跨域問題
阿新 • • 發佈:2020-08-05
package main import ( "github.com/gin-gonic/gin" "awesomeProject/app/app_routers" "strings" "fmt" "net/http" ) /* 路由初始化*/ var ( engine = gin.Default() ) func main() { // 允許使用跨域請求 全域性中介軟體 engine.Use(Cors()) //router.Use(cors.Default()) // 傳參 設定路由組 允許路由組使用路由 app_routers.Router(engine) // 啟動路由 設定埠 engine.Run(":11000") //執行啟動埠 } func Cors() gin.HandlerFunc { return func(c *gin.Context) { method := c.Request.Method //請求方法 origin := c.Request.Header.Get("Origin") //請求頭部 var headerKeys []string // 宣告請求頭keys for k, _ := range c.Request.Header { headerKeys = append(headerKeys, k) } headerStr := strings.Join(headerKeys, ", ") if headerStr != "" { headerStr = fmt.Sprintf("access-control-allow-origin, access-control-allow-headers, %s", headerStr) } else { headerStr = "access-control-allow-origin, access-control-allow-headers" } if origin != "" { c.Writer.Header().Set("Access-Control-Allow-Origin", "*") c.Header("Access-Control-Allow-Origin", "*") // 這是允許訪問所有域 c.Header("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE,UPDATE") //伺服器支援的所有跨域請求的方法,為了避免瀏覽次請求的多次'預檢'請求 // header的型別 c.Header("Access-Control-Allow-Headers", "Authorization, Content-Length, X-CSRF-Token, Token,session,X_Requested_With,Accept, Origin, Host, Connection, Accept-Encoding, Accept-Language,DNT, X-CustomHeader, Keep-Alive, User-Agent, X-Requested-With, If-Modified-Since, Cache-Control, Content-Type, Pragma") // 允許跨域設定 可以返回其他子段 c.Header("Access-Control-Expose-Headers", "Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers,Cache-Control,Content-Language,Content-Type,Expires,Last-Modified,Pragma,FooBar") // 跨域關鍵設定 讓瀏覽器可以解析 c.Header("Access-Control-Max-Age", "172800") // 快取請求資訊 單位為秒 c.Header("Access-Control-Allow-Credentials", "false") // 跨域請求是否需要帶cookie資訊 預設設定為true c.Set("content-type", "application/json") // 設定返回格式是json } //放行所有OPTIONS方法 if method == "OPTIONS" { c.JSON(http.StatusOK, "Options Request!") } // 處理請求 c.Next() // 處理請求 } }