返回null判定

common/src/main/java/com/pica/cloud/wechat/yunqueyilian/common/aop/PicaLogAspectForXml.java

@@ -73,7 +73,7 @@ public class PicaLogAspectForXml {
         Object result = pjp.proceed();
         String res = "";
         if (this.contentType.get().equals("text/xml")) {
-            if (StringUtil.isNull(result)){
+            if (StringUtil.isNotNull(result)){
                 res = result.toString();
             }
         } else if (this.contentType.get().equals("application/json")) {