完成body转发的demo

project/gateway/main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"encoding/json"
 	"git.sxidc.com/go-framework/baize"
 	"git.sxidc.com/go-framework/baize/convenient/gateway"
 	"git.sxidc.com/go-framework/baize/framework/binding"
@@ -23,16 +24,32 @@ func main() {
 		PrefixRouter().
 		RegisterVersionedRouter("v1")
 
-	prefixRootBinder := binding.NewBinder(app.ChooseRouter(api.RouterPrefix, ""), app.Infrastructure())
-
 	gw := gateway.NewGateway()
 	defer gateway.DestroyGateway(gw)
 
-	gw.Redirect(prefixRootBinder, &gateway.PassThrough{
-		HttpMethod: http.MethodGet,
-		SimplePassThrough: &gateway.SimplePassThrough{
-			RelativePath: "/version",
-			ToBaseUrl:    "http://localhost:31000/example/api",
+	v1Binder := binding.NewBinder(app.ChooseRouter(api.RouterPrefix, "v1"), app.Infrastructure())
+
+	gw.BodyMapping(v1Binder, &gateway.BodyMapping{
+		HttpMethod:   http.MethodPost,
+		RelativePath: "/class/create",
+		ToUrl:        "http://localhost:31000/example/api/v1/class/create",
+		BodyMappingFunc: func(body []byte) ([]byte, error) {
+			origin := make(map[string]any)
+
+			err := json.Unmarshal(body, &origin)
+			if err != nil {
+				return nil, err
+			}
+
+			origin["studentNum"] = origin["studentNum1"]
+			delete(origin, "studentNum1")
+
+			newBody, err := json.Marshal(origin)
+			if err != nil {
+				return nil, err
+			}
+
+			return newBody, nil
 		},
 	})