文件删除如果先删除文件后关闭文件流,就会出现文件删除不了的情况,

我原先的代码

 assert file != null;        
file.delete();
            try {
                if(outStream!=null){
                    outStream.close();
                }
            } catch (IOException e) {
                log.error("excel导入失败", e);
            }

修改之后

 assert file != null;  
try {
                if(outStream!=null){
                    outStream.close();
                }
            } catch (IOException e) {
                log.error("excel导入失败", e);
            }
            file.delete();