public static void splitFile(File file, long[] splitPoints) throws IOException {
        splitFile(file, splitPoints, file.getParent());
    }
public static void splitFile ( File file , long [ ] splitPoints ) throws IOException { splitFile ( file , splitPoints , file . getParent ( ) ) ; }
拆分文件

@param file 文件
@param splitPoints 拆分点数组（函数将根据拆分点来分割文件）

@throws IOException 异常