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Content-Disposition 属性是作为对下载文件的一个标识字段，在rfc2616 http://www.rfc-editor.org/rfc/rfc2616.pdf 章节19.5 Additional Features中 有介绍，具体介绍请看 http://www.rfc-editor.org/rfc/rfc1806.txt 字段介绍如下： disposition := "Content-Disposition" ":" disposition-type *(";" disposition-parm) disposition-type := "inline" / "attachment" / extension-token ; values are not case-sensitive disposition-parm := filename-parm / parameter filename-parm := "filename" "=" value;Content-Disposition属性有两种类型：inline 和 attachment inline ：将文件内容直接显示在页面 File file = new File("rfc1806.txt"); String filename = file.getName(); response.setHeader("Content-Type","text/plain"); response.addHeader("Content-Disposition","inline;filename=" + new String(filename.getBytes(),"utf-8")); response.addHeader("Content-Length","" + file.length());
attachment：弹出对话框让用户下载 File file = new File("rfc1806.txt"); String filename = file.getName(); response.setHeader("Content-Type","text/plain"); response.addHeader("Content-Disposition","attachment;filename=" + new String(filename.getBytes(),"utf-8")); response.addHeader("Content-Length","" + file.length());
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