添加trim功能，避免uuid中前后的空格

tools/datafile-generate.sh

@@ -13,6 +13,8 @@ do
 echo $oneline >> dataset.txt;
 cat "$oneline" >> dataset.txt;
 uuid=`cat "$oneline"`;
+# 移除前后空格，避免错误
+uuid=`echo $uuid`;
 if [ -e $uuid.txt ]
 then
   echo "do nothing! uuid重复或后面有空格：$uuid"