feat: rest validation on http requests (#3041)

rest/httpx/requests.go

@@ -7,6 +7,7 @@ import (
 	"sync/atomic"
 
 	"github.com/zeromicro/go-zero/core/mapping"
+	"github.com/zeromicro/go-zero/core/validation"
 	"github.com/zeromicro/go-zero/rest/internal/encoding"
 	"github.com/zeromicro/go-zero/rest/internal/header"
 	"github.com/zeromicro/go-zero/rest/pathvar"
@@ -51,7 +52,9 @@ func Parse(r *http.Request, v any) error {
 		return err
 	}
 
-	if val := validator.Load(); val != nil {
+	if valid, ok := v.(validation.Validator); ok {
+		return valid.Validate()
+	} else if val := validator.Load(); val != nil {
 		return val.(Validator).Validate(r, v)
 	}
 

rest/httpx/requests_test.go

@@ -354,6 +354,14 @@ func TestParseWithValidatorWithError(t *testing.T) {
 	assert.Error(t, Parse(r, &v))
 }
 
+func TestParseWithValidatorRequest(t *testing.T) {
+	SetValidator(mockValidator{})
+	var v mockRequest
+	r, err := http.NewRequest(http.MethodGet, "/a?&age=18", http.NoBody)
+	assert.Nil(t, err)
+	assert.Error(t, Parse(r, &v))
+}
+
 func BenchmarkParseRaw(b *testing.B) {
 	r, err := http.NewRequest(http.MethodGet, "http://hello.com/a?name=hello&age=18&percent=3.4", http.NoBody)
 	if err != nil {
@@ -410,3 +418,15 @@ func (m mockValidator) Validate(r *http.Request, data any) error {
 
 	return nil
 }
+
+type mockRequest struct {
+	Name string `json:"name,optional"`
+}
+
+func (m mockRequest) Validate() error {
+	if m.Name != "hello" {
+		return errors.New("name is not hello")
+	}
+
+	return nil
+}