diff --git a/jero-boot/jero-boot-module-system/src/main/java/com/jero/modules/cas/util/XmlUtils.java b/jero-boot/jero-boot-module-system/src/main/java/com/jero/modules/cas/util/XmlUtils.java
index 4b17bfdf..3778a0c9 100644
--- a/jero-boot/jero-boot-module-system/src/main/java/com/jero/modules/cas/util/XmlUtils.java
+++ b/jero-boot/jero-boot-module-system/src/main/java/com/jero/modules/cas/util/XmlUtils.java
@@ -1,19 +1,8 @@
 package com.jero.modules.cas.util;
 
 
-import java.io.StringReader;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.Map;
-
-import javax.xml.XMLConstants;
-import javax.xml.parsers.DocumentBuilderFactory;
-import javax.xml.parsers.ParserConfigurationException;
-import javax.xml.parsers.SAXParser;
-import javax.xml.parsers.SAXParserFactory;
+import com.jero.common.exception.JeroBootException;
+import lombok.extern.slf4j.Slf4j;
 import org.w3c.dom.Document;
 import org.xml.sax.Attributes;
 import org.xml.sax.InputSource;
@@ -21,7 +10,13 @@ import org.xml.sax.SAXException;
 import org.xml.sax.XMLReader;
 import org.xml.sax.helpers.DefaultHandler;
 
-import lombok.extern.slf4j.Slf4j;
+import javax.xml.XMLConstants;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.parsers.SAXParser;
+import javax.xml.parsers.SAXParserFactory;
+import java.io.StringReader;
+import java.util.*;
 
 /**
  * 解析cas,ST验证后的xml
@@ -53,7 +48,7 @@ public final class XmlUtils {
         try {
             return factory.newDocumentBuilder().parse(new InputSource(new StringReader(xml)));
         } catch (Exception e) {
-            throw new RuntimeException("XML parsing error: " + e);
+            throw new JeroBootException("XML parsing error: " + e);
         }
     }
 
@@ -70,7 +65,7 @@ public final class XmlUtils {
             reader.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
             return reader;
         } catch (final Exception e) {
-            throw new RuntimeException("Unable to create XMLReader", e);
+            throw new JeroBootException("Unable to create XMLReader", e);
         }
     }
 
@@ -126,7 +121,7 @@ public final class XmlUtils {
             reader.parse(new InputSource(new StringReader(xmlAsString)));
         } catch (final Exception e) {
             log.error(e.getMessage(), e);
-            return null;
+            return Collections.emptyList();
         }
 
         return elements;