在golang的路上緩慢前進(jìn) Gin框架 跨域問題的解說與方法
代碼如下：
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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(qǐng)求 全局中間件 engine.Use(Cors()) //router.Use(cors.Default()) // 傳參 設(shè)定路由組 允許路由組使用路由 app_routers.Router(engine) // 啟動(dòng)路由 設(shè)定端口 Cors() engine.Run(":11000") //運(yùn)行啟動(dòng)端口 } //// 跨域func Cors() gin.HandlerFunc { return func(c *gin.Context) { method := c.Request.Method //請(qǐng)求方法 origin := c.Request.Header.Get("Origin") //請(qǐng)求頭部 var headerKeys []string // 聲明請(qǐng)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") //服務(wù)器支持的所有跨域請(qǐng)求的方法,為了避免瀏覽次請(qǐng)求的多次'預(yù)檢'請(qǐng)求 // header的類型 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(shè)置 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(guān)鍵設(shè)置 讓瀏覽器可以解析 c.Header("Access-Control-Max-Age", "172800") // 緩存請(qǐng)求信息 單位為秒 c.Header("Access-Control-Allow-Credentials", "false") // 跨域請(qǐng)求是否需要帶cookie信息 默認(rèn)設(shè)置為true c.Set("content-type", "application/json") // 設(shè)置返回格式是json } //放行所有OPTIONS方法 if method == "OPTIONS" { c.JSON(http.StatusOK, "Options Request!") } // 處理請(qǐng)求 c.Next() // 處理請(qǐng)求 }} |
補(bǔ)充：gin框架中間件解決跨域問題
代碼如下：
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func Cors(c *gin.Context) { 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, PUT, PATCH, DELETE") 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") //這里是解決vue那個(gè)坑 method := c.Request.Method // 放行所有OPTIONS方法，因?yàn)橛械哪０迨且?qǐng)求兩次的 if method == "OPTIONS" { c.AbortWithStatus(http.StatusNoContent) } // 處理請(qǐng)求 c.Next()} |
以上為個(gè)人經(jīng)驗(yàn)，希望能給大家一個(gè)參考，也希望大家多多支持服務(wù)器之家。如有錯(cuò)誤或未考慮完全的地方，望不吝賜教。
原文鏈接：https://blog.csdn.net/Chelydra/article/details/79884861
