获取使用的field时，转为大写再比较

src/main/java/com/uas/report/service/impl/PrintServiceImpl.java

@@ -423,7 +423,7 @@ public class PrintServiceImpl implements PrintService {
 			Pattern pattern = Pattern.compile("\\$F\\{([^\\$]*)\\}");
 			Matcher matcher = pattern.matcher(line);
 			while (matcher.find()) {
-				result.add(matcher.group(1));
+				result.add(matcher.group(1).toUpperCase());
 			}
 		}
 		bufferedReader.close();