diff --git a/src/main/java/nlib/cmm/NlibCommonController.java b/src/main/java/nlib/cmm/NlibCommonController.java
index 490fc823..2374d2d9 100644
--- a/src/main/java/nlib/cmm/NlibCommonController.java
+++ b/src/main/java/nlib/cmm/NlibCommonController.java
@@ -401,4 +401,17 @@ public class NlibCommonController {
 		
 		return nlibLoginVO.isAlerted();
 	}
+	
+	public String getParamStr(Map<String, String> paramMap, String paramName) {
+		return getParamStr(paramMap, paramName, null);
+	}
+	
+	public String getParamStr(Map<String, String> paramMap, String paramName, String defValue) {
+		if(paramMap == null) return null;
+		if(StringUtil.isEmpty(paramName)) return null;
+		String value = (String)paramMap.get(paramName);
+		
+		return StringUtil.isEmpty(value) ? defValue : value;
+	}
+	
 }