diff --git a/Bench4Q-Share/src/main/java/org/bench4q/share/communication/HttpRequester.java b/Bench4Q-Share/src/main/java/org/bench4q/share/communication/HttpRequester.java
index 0be1ec73..355d1bb0 100644
--- a/Bench4Q-Share/src/main/java/org/bench4q/share/communication/HttpRequester.java
+++ b/Bench4Q-Share/src/main/java/org/bench4q/share/communication/HttpRequester.java
@@ -22,11 +22,11 @@ import org.apache.commons.httpclient.methods.PostMethod;
 import org.apache.commons.httpclient.methods.multipart.FilePart;
 import org.apache.commons.httpclient.methods.multipart.MultipartRequestEntity;
 import org.apache.commons.httpclient.methods.multipart.Part;
-import org.apache.commons.httpclient.methods.multipart.PartSource;
 import org.apache.commons.httpclient.methods.multipart.StringPart;
+import org.apache.log4j.Logger;
+import org.bench4q.share.helper.ExceptionLog;
 import org.springframework.stereotype.Component;
 import org.springframework.web.multipart.MultipartFile;
-import org.springframework.web.multipart.commons.CommonsMultipartFile;
 
 @Component
 public class HttpRequester {
@@ -118,7 +118,7 @@ public class HttpRequester {
 
 	public HttpResponse postFiles(Map<String, String> headers, String url,
 			String filePartName, List<File> files, String stringPartName,
-			List<String> strings){
+			List<String> strings) {
 		if (!url.startsWith("http"))
 			url = "http://" + url;
 		PostMethod postMethod = new PostMethod(url);
@@ -150,24 +150,21 @@ public class HttpRequester {
 			postMethod.releaseConnection();
 		}
 	}
+
 	public HttpResponse postFilesMulti(Map<String, String> headers, String url,
-			String filePartName, CommonsMultipartFile[] paramFiles, String stringPartName,
-			List<String> strings) {
-		List<File> files=new LinkedList<File>();
-		for(CommonsMultipartFile commonsMultipartFile:paramFiles){
-			File file=new File("paramFile.txt");
-			try {
-				commonsMultipartFile.transferTo(file);
-			
-			files.add(file);
-			} catch (Exception e) {
-				// TODO Auto-generated catch block
-				e.printStackTrace();
-				return null;
+			String filePartName, MultipartFile[] multipartFiles,
+			String stringPartName, List<String> strings) throws IOException {
+		List<File> files = new LinkedList<File>();
+		if (multipartFiles != null) {
+			for (MultipartFile multipartFile : multipartFiles) {
+				File file = new File("paramFile.txt");
+				multipartFile.transferTo(file);
+				files.add(file);
+
 			}
-	
 		}
-		return postFiles(headers, url, filePartName, files, stringPartName, strings);
+		return postFiles(headers, url, filePartName, files, stringPartName,
+				strings);
 	}
 
 	private HttpResponse send(String urlString, String method,
@@ -234,12 +231,15 @@ public class HttpRequester {
 			return buildHttpResponse(urlConnection,
 					readConnectionInputStream(in));
 		} catch (IOException e) {
-			e.printStackTrace();
+			Logger.getLogger(HttpRequester.class).info(
+					ExceptionLog.getStackTrace(e));
 			in = urlConnection.getErrorStream();
 			try {
 				return buildHttpResponse(urlConnection,
 						readConnectionInputStream(in));
 			} catch (Exception e1) {
+				Logger.getLogger(HttpRequester.class).info(
+						ExceptionLog.getStackTrace(e1));
 				return getDefaultErrorResponse();
 			}
 		} finally {