add serialize

atms-api/src/main/java/pwc/taxtech/atms/common/util/PwCIdSerialize.java

+package pwc.taxtech.atms.common.util;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.databind.JsonSerializer;
+import com.fasterxml.jackson.databind.SerializerProvider;
+
+import java.io.IOException;
+
+public class PwCIdSerialize extends JsonSerializer<Long> {
+
+    @Override
+    public void serialize(Long value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
+        if (null != value) {
+            gen.writeString(value.toString());
+        }
+    }
+}