## CORS 示例
### 服务端
`server.go`
```go
package main
import (
"net/http"
"github.com/labstack/echo"
"github.com/labstack/echo/middleware"
)
var (
users = []string{"Joe", "Veer", "Zion"}
)
func getUsers(c echo.Context) error {
return c.JSON(http.StatusOK, users)
}
func main() {
e := echo.New()
e.Use(middleware.Logger())
e.Use(middleware.Recover())
// CORS default
// Allows requests from any origin wth GET, HEAD, PUT, POST or DELETE method.
// e.Use(middleware.CORS())
// CORS restricted
// Allows requests from any `https://labstack.com` or `https://labstack.net` origin
// wth GET, PUT, POST or DELETE method.
e.Use(middleware.CORSWithConfig(middleware.CORSConfig{
AllowOrigins: []string{"https://labstack.com", "https://labstack.net"},
AllowMethods: []string{echo.GET, echo.PUT, echo.POST, echo.DELETE},
}))
e.GET("/api/users", getUsers)
e.Logger.Fatal(e.Start(":1323"))
}
```
