Examples to explain thinkjs file upload function-JS Tutorial-php.cn

This article mainly introduces the thinkjs file upload function to you. ThinkJS is a Node.js framework for future development. It integrates a large number of project best practices to make enterprise-level development so simple and efficient. Next, I will share with you the thinkjs file upload function through this article. Friends who need it can refer to it. I hope it can help everyone.

Features

Based on Koa 2.x, compatible with middleware
The kernel is compact and supports plug-in methods such as Extend and Adapter
Excellent performance and high unit test coverage
Built-in automatic compilation and automatic update mechanism to facilitate rapid development
Use more elegant async/await to handle asynchronous issues, no longer support */yield
Support TypeScript starting from 3.2

Architecture

thinkjs is a nodejs-based mvc framework produced by 360 Company. This article uses thinkjs to write the backend. The specific code is as follows:

let formdata = new FormData($('form')[0]); $('#fileUpload').submit(function (e) { e.preventDefault(); var data = new FormData($(this)[0]); $.ajax({ url: '/themestore/upload/theme', type: 'POST', data: data, async: false, //发送同步请求（默认为TRUE） cache: false, //不同浏览器缓存中加载请求信息（默认为true） contentType: false, //内容编码格式 processData: false, /*要求为Boolean类型的参数，默认为true。默认情况下，发送的数据将被转换为对象（从技术角度来讲并非字符串）以配合默认内容类型"application/x-www-form-urlencoded"。如果要发送DOM树信息或者其他不希望转换的信息，请设置为false。*/ success:function (res) { if(!res.errno) alert('上传成功！'); else alert('上传失败，请重试！'); } }); });

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Description: async : false, cache: false, contentType: false, processData: false, need to be written.

In addition, the values corresponding to each form item in the formdata object must be viewed using its own get method.

eg: data.get('file') //The parameter of get is the name of the form element.

async themeAction(){ let themefile = this.file('themename'); let filepath = themefile.path;//为防止上传的时候因文件名重复而覆盖同名已上传文件，path是MD5方式产生的随机名称 let uploadpath = think.RESOURCE_PATH + '/static/theme'; think.mkdir(uploadpath);//创建该目录 //提取出用 ‘/' 隔开的path的最后一部分。 //let basename = path.basename(filepath); let basename = themefile.originalFilename;//因为本系统不允许上传同名主题，所以文件名就直接使用主题名 //将上传的文件（路径为filepath的文件）移动到第二个参数所在的路径，并改为第二个参数的文件名。 fs.renameSync(filepath, uploadpath + '/' + basename); themefile.path = uploadpath + '/' + basename; //读取压缩文件信息存数据库 let zip = new JSZip(); this.success(themefile); }

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