This is a blog about how to get the image file(s) some informations.Including the Make,Model,Date/Tiime,etc. while,how can do it? I should use a tool which name is :Exif,writed by Java,and now its version is 2.6.4. and you can get more from the here.…

File is a named location on disk to store related information. It is used to permanently store data in a non-volatile memory (e.g. hard disk). Since, random access memory (RAM) is volatile which loses its data when computer is turned off, we use file…

备份数据库,报错如下 RMAN> backup database; Starting backup at -JAN- allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID= device type=DISK channel ORA_DISK_1: starting full datafile backup set channel ORA_DISK_1: specifying datafile(s) in backup set RMAN-: f…

[Display file information in the document window] The status bar is located at the bottom of every document window and displays useful information—such as the current magnification and file size of the active image, and brief instructions for using t…

A file system layout apportions an underlying physical volume into one or more virtual volumes (vvols) of a storage system. The underlying physical volume is an aggregate comprising one or more groups of disks, such as RAID groups, of the storage sys…

1.File类的概述         文件和目录路径名的抽象表示形式,创建File对象后,仅仅是一个路径的表示,不代码具体的事物一定是存在的. 2.构造方法         · public File(String pathname):根据一个路径得到File对象         · public File(String parent,String child):根据一个目录和一个子文件/目录得到File对象         · public File(File parent,String ch…

package cn.itcast_01; import java.io.File; /* * 我们要想实现IO的操作,就必须知道硬盘上文件的表现形式. * 而Java就提供了一个类File供我们使用. * * File:文件和目录(文件夹)路径名的抽象表示形式 * 构造方法: * File(String pathname):根据一个路径得到File对象 * File(String parent, String child):根据一个目录和一个子文件/目录得到File对象 * File(File…

前言 上传图片是常见的需求,多使用input标签.本文主要介绍 input标签的样式美化 和 实现图片预览. 用到的知识点有: 1.input标签的使用 2.filelist对象 和 file对象 3.fileReader对象 样式美化 原生的input标签样式单一,且在不同浏览器下的表现还不一致.所以为了美观和统一,我们需要自定义input标签的样式. 实现的方式有很多中,这里采用的是:用一个div将input标签包裹,然后再将input标签透明度设置为0,再对div设置自己需要的样式.htm…

生成缓存文件cache file class Test{ public function index(){ $arrConfig = Array( 'name' => 'daicr', 'age' => 24, 'host' => '127.0.0.1', 'port' => 80, ); $str = $this -> getcachevars(array("config_im_api" => $arrConfig),'ARRAY'); $this…

js 图片base64转file文件的两种方式 https://blog.csdn.net/yin13037173186/article/details/83302628 //将base64转换为blob dataURLtoBlob: function(dataurl) { var arr = dataurl.split(','), mime = arr[0].match(/:(.*?);/)[1], bstr = atob(arr[1]), n = bstr.length, u8arr = n…