gin框架的http接口支持跨域请求的方法
gin框架写的http接口支持跨域请求的方法很简单,实现一个支持跨域的中间件接口就行,关键代码如下:
package main import ( "net/http" "github.com/gin-gonic/gin" ) func cors() gin.HandlerFunc { return func(c *gin.Context) { origin := c.Request.Header.Get("origin") if len(origin) == 0 { origin = c.Request.Header.Get("Origin") } c.Writer.Header().Set("Access-Control-Allow-Origin", origin) c.Writer.Header().Set("Access-Control-Allow-Credentials", "true") c.Writer.Header().Set("Access-Control-Allow-Headers", "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With") c.Writer.Header().Set("Access-Control-Allow-Methods", "OPTIONS, GET, POST") c.Writer.Header().Set("Content-Type", "application/json; charset=utf-8") if c.Request.Method == "OPTIONS" { c.AbortWithStatus(204) return } c.Next() } } func statusOKHandler(c *gin.Context) { c.JSON(http.StatusOK, gin.H{"status": "success"}) } func versionHandler(c *gin.Context) { c.JSON(http.StatusOK, gin.H{"version": "v1.2"}) } func main() { router := gin.New() router.Use(cors()) router.Use(gin.Recovery()) router.GET("/ping", statusOKHandler) router.GET("/version", versionHandler) router.Run(":8080") }
使用go run main.go启动服务,然后使用postman来验证下:
如果要调整一些跨域的规则,则修改cors方法里的一些相关参数即可。