From: Nick Burch <nick@apache.org>
Date: Thu, 20 Dec 2012 03:54:42 +0000 (+0000)
Subject: Make the exception a bit more explicit about what is wrong
X-Git-Tag: 3.10-beta1~75
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=20f20b04dd04576fb7e1fd18289d2b2a18cadd97;p=poi.git

Make the exception a bit more explicit about what is wrong

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1424281 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/src/java/org/apache/poi/poifs/storage/HeaderBlock.java b/src/java/org/apache/poi/poifs/storage/HeaderBlock.java
index 5b9e071d6c..fc76c26ddc 100644
--- a/src/java/org/apache/poi/poifs/storage/HeaderBlock.java
+++ b/src/java/org/apache/poi/poifs/storage/HeaderBlock.java
@@ -136,10 +136,11 @@ public final class HeaderBlock implements HeaderBlockConstants {
 						+ "POI only supports BIFF8 format");
 			}
 
-			// Give a generic error
+			// Give a generic error if the OLE2 signature isn't found
 			throw new IOException("Invalid header signature; read "
 				                  + longToHex(signature) + ", expected "
-				                  + longToHex(_signature));
+				                  + longToHex(_signature) + " - Your file appears "
+				                  + "not to be a valid OLE2 document");
 		}