修改合并mp3文件规则

src/main/java/com/mortals/xhx/tts/utils/SpliceMp3Util.java

@@ -23,6 +23,9 @@ public class SpliceMp3Util {
         String fileName = path.substring(path.lastIndexOf("/")+1);
 
         File file = new File(lujing+fileName);
+        if(file.exists()){
+            file.delete();
+        }
         saveToFile(inputStream,file);
         File file1 = new File(lujing+fileName + "01");// 分离ID3V2后的文件,这是个中间文件，最后要被删除
         File file2 = new File(lujing+fileName + "001");// 分离id3v1后的文件