增加參數的判斷

src/main/java/LanguageFileCompare.java

@@ -19,12 +19,15 @@ public class LanguageFileCompare {
   public static void main(String[] args) {
     try {
       ObjectMapper objectMapper = new ObjectMapper();
+      if (args.length > 0) {
         Path originPath = Paths.get(args[0]);
         JsonNode twJson = objectMapper.readTree(new String(Files.readAllBytes(originPath)));
         Set<String> originSet = new HashSet<>();
         addKeys("", twJson, originSet, new ArrayList<>());
 
-      IntStream.range(1, args.length).forEach(i -> findMissingKeys(Paths.get(args[i]), originSet));
+        IntStream.range(1, args.length)
+            .forEach(i -> findMissingKeys(Paths.get(args[i]), originSet));
+      }
     } catch (Exception e) {
       log.error("{} is not exists or not json files.", args[0], e);
       System.exit(1);