add GetError function for ghttp.Request

.example/other/test.go

@@ -1,15 +1,43 @@
 package main
 
 import (
-	"fmt"
+	"net/http"
+
+	"github.com/gogf/gf/frame/g"
 	"github.com/gogf/gf/net/ghttp"
 )
 
+func MiddlewareAuth(r *ghttp.Request) {
+	token := r.Get("token")
+	if token == "123456" {
+		r.Middleware.Next()
+	} else {
+		r.Response.WriteStatus(http.StatusForbidden)
+	}
+}
+
+func MiddlewareCORS(r *ghttp.Request) {
+	r.Response.CORSDefault()
+	r.Middleware.Next()
+}
+
+func MiddlewareLog(r *ghttp.Request) {
+	r.Middleware.Next()
+	g.Log().Println(r.Response.Status, r.URL.Path, r.GetError().Error())
+}
+
 func main() {
-	s := ghttp.GetServer()
-	s.BindHandler("/*", func(r *ghttp.Request) {
-		fmt.Println(r.URL.RawPath)
-		r.Response.Write(r.GetUrl())
+	s := g.Server()
+	s.SetConfigWithMap(g.Map{
+		"AccessLogEnabled": false,
+		"ErrorLogEnabled":  false,
+	})
+	s.BindMiddlewareDefault(MiddlewareLog)
+	s.Group("/api.v2", func(group *ghttp.RouterGroup) {
+		group.Middleware(MiddlewareAuth, MiddlewareCORS)
+		group.ALL("/user/list", func(r *ghttp.Request) {
+			panic("啊！我出错了！")
+		})
 	})
 	s.SetPort(8199)
 	s.Run()

net/ghttp/ghttp_request.go

@@ -161,3 +161,9 @@ func (r *Request) GetSessionId() string {
 func (r *Request) GetReferer() string {
 	return r.Header.Get("Referer")
 }
+
+// GetError returns the error occurs in the procedure of the request.
+// It returns nil if there's no error.
+func (r *Request) GetError() error {
+	return r.error
+}