{"id":1587,"date":"2017-07-05T15:28:40","date_gmt":"2017-07-05T07:28:40","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=1587"},"modified":"2017-07-05T15:28:40","modified_gmt":"2017-07-05T07:28:40","slug":"html5-video-blob","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=1587","title":{"rendered":"HTML5 video blob"},"content":{"rendered":"

\n\t\u4eca\u5929\u53d1\u73b0\u6155\u8bfe\u7f51\u4e2d\u7684\u89c6\u9891\u64ad\u653e\u5730\u5740\u4f7f\u7528\u4e86Blob\u52a0\u5bc6\u3002\u8fd9\u662f\u4e00\u79cd\u65b0\u7684\u7528\u6cd5\uff0c\u6211\u662f\u7b2c\u4e00\u6b21\u53d1\u73b0\u3002\u56e0\u6b64\u4fbf\u7814\u7a76\u4e86\u4e00\u4e0b\u5b83\u7684\u7528\u6cd5\u3002\n<\/p>\n

\n\t\u91c7\u7528Blob\u53ef\u4ee5\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u6a21\u7cca\u4f4f\u5927\u5bb6\u3002\u4f8b\u5982\u4e0b\u9762\u7684\u8fd9\u4e2a\u64ad\u653e\u5730\u5740\uff1a\n<\/p>\n

\n

\n\t\tblob:http:\/\/simpl.info\/884da595-7816-4211-b6c3-607c444556ef\n\t<\/p>\n<\/blockquote>\n

\n\tBLOB (binary large object)\uff0c\u4e8c\u8fdb\u5236\u5927\u5bf9\u8c61\uff0c\u662f\u4e00\u4e2a\u53ef\u4ee5\u5b58\u50a8\u4e8c\u8fdb\u5236\u6587\u4ef6\u7684\u5bb9\u5668\u3002Video \u4f7f\u7528 blob \u4e8c\u8fdb\u5236\u6d41\u9700\u8981\u524d\u540e\u7aef\u540c\u65f6\u652f\u6301\u3002\n<\/p>\n

\n\tJava \u751f\u6210 Blob \u4e8c\u8fdb\u5236\u6d41
\n<\/h2>\n
\r\n\/*\r\n * \u5728\u8fd9\u91cc\u53ef\u4ee5\u8fdb\u884c\u6743\u9650\u9a8c\u8bc1\u7b49\u64cd\u4f5c\r\n *\/\r\n\r\n\/\/\u521b\u5efa\u6587\u4ef6\u5bf9\u8c61\r\nFile f = new File("E:\\\\test.mp4");\r\n\/\/\u83b7\u53d6\u6587\u4ef6\u540d\u79f0\r\nString fileName = f.getName();\r\n\/\/\u5bfc\u51fa\u6587\u4ef6\r\nString agent = getRequest().getHeader("User-Agent").toUpperCase();\r\nInputStream fis = null;\r\nOutputStream os = null;\r\ntry {\r\n    fis = new BufferedInputStream(new FileInputStream(f.getPath()));\r\n    byte[] buffer;\r\n    buffer = new byte[fis.available()];\r\n    fis.read(buffer);\r\n    getResponse().reset();\r\n    \/\/\u7531\u4e8e\u706b\u72d0\u548c\u5176\u4ed6\u6d4f\u89c8\u5668\u663e\u793a\u540d\u79f0\u7684\u65b9\u5f0f\u4e0d\u76f8\u540c\uff0c\u9700\u8981\u8fdb\u884c\u4e0d\u540c\u7684\u7f16\u7801\u5904\u7406\r\n    if(agent.indexOf("FIREFOX") != -1){\/\/\u706b\u72d0\u6d4f\u89c8\u5668\r\n        getResponse().addHeader("Content-Disposition", "attachment;filename="+ new String(fileName.getBytes("GB2312"),"ISO-8859-1"));\r\n    }else{\/\/\u5176\u4ed6\u6d4f\u89c8\u5668\r\n        getResponse().addHeader("Content-Disposition", "attachment;filename="+ URLEncoder.encode(fileName, "UTF-8")); \r\n    }\r\n    \/\/\u8bbe\u7f6eresponse\u7f16\u7801 \r\n    getResponse().setCharacterEncoding("UTF-8");\r\n    getResponse().addHeader("Content-Length", "" + f.length());\r\n    \/\/\u8bbe\u7f6e\u8f93\u51fa\u6587\u4ef6\u7c7b\u578b\r\n    getResponse().setContentType("video\/mpeg4");\r\n    \/\/\u83b7\u53d6response\u8f93\u51fa\u6d41\r\n    os = getResponse().getOutputStream();\r\n    \/\/ \u8f93\u51fa\u6587\u4ef6\r\n    os.write(buffer);\r\n}catch(Exception e){\r\n    System.out.println(e.getMessage());\r\n} finally{\r\n    \/\/\u5173\u95ed\u6d41\r\n    try {\r\n        if(fis != null){\r\n            fis.close();\r\n        }\r\n    } catch (IOException e) {\r\n        System.out.println(e.getMessage());\r\n    } finally{\r\n        try {\r\n            if(os != null){\r\n                os.flush();\r\n            }\r\n        } catch (IOException e) {\r\n            System.out.println(e.getMessage());\r\n        } finally{\r\n            try {\r\n                if(os != null){\r\n                    os.close();\r\n                }\r\n            } catch (IOException e) {\r\n                System.out.println(e.getMessage());\r\n            }\r\n        }\r\n    }\r\n}<\/pre>\n
\n\tHTML5 Video \u4f7f\u7528 Blob
\n<\/h2>\n
\r\n\/\/\u521b\u5efaXMLHttpRequest\u5bf9\u8c61\r\nvar xhr = new XMLHttpRequest();\r\n\/\/\u914d\u7f6e\u8bf7\u6c42\u65b9\u5f0f\u3001\u8bf7\u6c42\u5730\u5740\u4ee5\u53ca\u662f\u5426\u540c\u6b65\r\nxhr.open('POST', '.\/play', true);\r\n\/\/\u8bbe\u7f6e\u8bf7\u6c42\u7ed3\u679c\u7c7b\u578b\u4e3ablob\r\nxhr.responseType = 'blob';\r\n\/\/\u8bf7\u6c42\u6210\u529f\u56de\u8c03\u51fd\u6570\r\nxhr.onload = function(e) {\r\n    if (this.status == 200) {\/\/\u8bf7\u6c42\u6210\u529f\r\n        \/\/\u83b7\u53d6blob\u5bf9\u8c61\r\n        var blob = this.response;\r\n        \/\/\u83b7\u53d6blob\u5bf9\u8c61\u5730\u5740\uff0c\u5e76\u628a\u503c\u8d4b\u7ed9\u5bb9\u5668\r\n        $("#sound").attr("src", URL.createObjectURL(blob));\r\n    }\r\n};\r\nxhr.send();<\/pre>\n
\n\tHTML\u4ee3\u7801\uff1a\n<\/p>\n
\r\n<video id="sound" width="200" controls="controls"><\/video>\r\n<\/pre>\n
\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/<\/p>
\u6700\u540e\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u4e2a\u4eba\u5fae\u4fe1\u516c\u4f17\u53f7\uff1a\u4e1a\u4f59\u8349\uff08yyucao\uff09\uff01\u53ef\u52a0\u4f5c\u8005\u5fae\u4fe1\u53f7\uff1axttblog2<\/font>\u3002\u5907\u6ce8\uff1a\u201c1\u201d\uff0c\u6dfb\u52a0\u535a\u4e3b\u5fae\u4fe1\u62c9\u4f60\u8fdb\u5fae\u4fe1\u7fa4\u3002\u5907\u6ce8\u9519\u8bef\u4e0d\u4f1a\u540c\u610f\u597d\u53cb\u7533\u8bf7\u3002<\/b>\u518d\u6b21\u611f\u8c22\u60a8\u7684\u5173\u6ce8\uff01\u540e\u7eed\u6709\u7cbe\u5f69\u5185\u5bb9\u4f1a\u7b2c\u4e00\u65f6\u95f4\u53d1\u7ed9\u60a8\uff01\u539f\u521b\u6587\u7ae0\u6295\u7a3f\u8bf7\u53d1\u9001\u81f3532009913@qq.com\u90ae\u7bb1\u3002\u5546\u52a1\u5408\u4f5c\u4e5f\u53ef\u6dfb\u52a0\u4f5c\u8005\u5fae\u4fe1\u8fdb\u884c\u8054\u7cfb\uff01<\/p>
\u672c\u6587\u539f\u6587\u51fa\u5904\uff1a\u4e1a\u4f59\u8349<\/a>\uff1a » HTML5 video blob<\/a><\/p>","protected":false},"excerpt":{"rendered":"
\u4eca\u5929\u53d1\u73b0\u6155\u8bfe\u7f51\u4e2d\u7684\u89c6\u9891\u64ad\u653e\u5730\u5740\u4f7f\u7528\u4e86Blob\u52a0\u5bc6\u3002\u8fd9\u662f\u4e00\u79cd\u65b0\u7684\u7528\u6cd5\uff0c\u6211\u662f\u7b2c\u4e00\u6b21\u53d1\u73b0\u3002\u56e0\u6b64\u4fbf\u7814\u7a76\u4e86\u4e00\u4e0b\u5b83\u7684\u7528\u6cd5\u3002 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,5],"tags":[929,1202,87,119,495],"class_list":["post-1587","post","type-post","status-publish","format-standard","hentry","category-html5","category-java","tag-ajax","tag-blob","tag-createobjecturl","tag-html5","tag-video"],"_links":{"self":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/1587","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1587"}],"version-history":[{"count":1,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/1587\/revisions"}],"predecessor-version":[{"id":1588,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/1587\/revisions\/1588"}],"wp:attachment":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1587"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}