examples/blog:keep the grpc and http error consistent (#873)

examples/blog/internal/server/http.go

@@ -8,6 +8,7 @@ import (
 	"github.com/go-kratos/kratos/v2/middleware"
 	"github.com/go-kratos/kratos/v2/middleware/logging"
 	"github.com/go-kratos/kratos/v2/middleware/recovery"
+	"github.com/go-kratos/kratos/v2/middleware/status"
 	"github.com/go-kratos/kratos/v2/middleware/tracing"
 	"github.com/go-kratos/kratos/v2/transport/http"
 	"go.opentelemetry.io/otel/trace"
@@ -27,6 +28,7 @@ func NewHTTPServer(c *conf.Server, tracer trace.TracerProvider, blog *service.Bl
 	}
 	m := http.Middleware(
 		middleware.Chain(
+			status.Server(),
 			tracing.Server(tracing.WithTracerProvider(tracer)),
 			logging.Server(log.DefaultLogger),
 			recovery.Recovery(),