1 files changed, 24 insertions, 0 deletions
diff --git a/util/json_util/json.go b/util/json_util/json.go
new file mode 100644
index 00000000..65ad789e
--- /dev/null
+++ b/util/json_util/json.go
@@ -0,0 +1,24 @@
+package json_util
+
+import (
+	"errors"
+)
+
+type RawMessage []byte
+
+// MarshalJSON 自定义 json.RawMessage 默认行为
+func (m RawMessage) MarshalJSON() ([]byte, error) {
+	if len(m) == 0 {
+		return []byte("null"), nil
+	}
+	return m, nil
+}
+
+// UnmarshalJSON sets *m to a copy of data.
+func (m *RawMessage) UnmarshalJSON(data []byte) error {
+	if m == nil {
+		return errors.New("json.RawMessage: UnmarshalJSON on nil pointer")
+	}
+	*m = append((*m)[0:0], data...)
+	return nil
+}