php 将导入文件显示在页面上的有关问题
php 将导入文件显示在页面上的问题
需求是这样的:
选择文件后,文件即可显示在网页上,如果确定导入,点击导入按钮即可存入到数据库内。
页面是这样的:
现在问题是点击选择图片按钮,不能显示文件内容,只有点击导入按钮才会显示文件内容。
请问这要怎么办? 如果需求有问题可略微改动一下,但不可点击导入才显示文件内容。
贴上部分代码:
php菜鸟,求大神指点!! 真的不会php! 好纠结!
------解决方案--------------------
这不是会不会 php 的问题
而是守不守规矩的问题
浏览器出于安全的原因,不能通过 js 读取本地文件内容。这就是规矩
你必须先上传,再返回显示
------解决方案--------------------
楼主做导入,是否是选择文件->导入,如果仅仅点击导入,你又何曾选择文件?
选择文件,点击导入,把选择的文件存入了临时目录,上传成功,服务端就会获取到文件内容的地址,文件名,格式等。
------解决方案--------------------
要先上傳才可以顯示。
安全限制了。

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