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js-chunk-file-upload

v0.1.10

Published

big file chunk and upload,you can custom request

Downloads

11

Readme

js-chunk-file-upload

序言

js-chunk-file-upload是用于处理大文件切片断点续传的工具,相较于其他断点续传包,在已有的切片,断点续传基础上新增自定义上传请求,使用更为灵活。

项目信息

  1. 原创作者:Peoren
  2. 开源协议:MIT
  3. 发布日期:2022-04-2
  4. 联系方式:[email protected]
  5. 开源地址:https://github.com/peoren/chunk-file-upload.git

用法

$ npm i js-chunk-file-upload
        // 最好是一个文件创建一个实例,初始化时定义大小和模式
        const cuf = new ChunkUploadFile({
            size: 10240,
            //   accept:['.zip','.png']
        })
        // 打开文件对话框
        cuf.readFile()
        // 钩子函数: 文件读取完毕
        cuf.onFileReadEnd = function (file, fileId) {
            const formdata = new FormData
            formdata.append('md5', fileId)
            console.log('file', file);
            // first request
            setTimeout(() => {
                // 文件发送接口,
                // customReq为自定义请求,必传参数,当请求完毕后调用next()函数,以便内部获知。
                // savedChunkIds为已经上传的数组,传入已经上传chunkId数组,将会跳过这些数据,避免重复上传。
                cuf.sendFile({
                    customReq: function (file, next) {
                        console.log('单独的切片文件-》', file);
                        file.chunks = file.chunkLength
                        file.chunk = file.chunkId
                        file.chunkSize = cuf.chunkSize
                        // 将单个文件包装成formdata,当然也可以自己处理
                        const data = cuf.packgeChunk(file)
                        file = null
                        // upload request
                        setTimeout(() => {
                            next()
                        }, 1000);
                    }
                })
            }, 1000);


        }
        // 文件转hash进度
        cuf.hashProgress = function (r) {
            console.log('文件转哈希进度==>', r);
        }
        // 钩子函数

        // 单个上传失败
        cuf.onUploadFail = function (err, index) {
            console.log(err, index);
        }
        // 单个文件上传完成
        cuf.onUpload = function (res, index) {
            console.log(res, index);
        }
        // 暂停
        cuf.onPaused = function () {
            console.log('暂停了');
        }
        // 继续
        cuf.onContinue = function () {
            console.log('继续了');
        }
        // 全部上传完成
        cuf.onFullUpload = function (fileId) {
            console.log('全部传送完毕');
        }
        // 监听销毁
        cuf.onDestroy = function () {
            
        }
        // 监听重置
        cuf.onRestart = function () {
            
        }
        // 暂停方法
        cuf.pauseUpload()
        // 继续方法
        cuf.continueUpload()
        // 将单个file包装成formData
        cuf.packgeChunk()
        // 销毁生命周期
        cuf.destroy()
        // 重置
        cuf.restart()

示例

demo目录内有简单的示例代码

主要功能

文件上传:文件切片,上传,断点续传。

生命周期:文件转哈希-文件读取-单个文件上传-记录整合数据-上传完成

操控:能够打断上传过程

续传:在sendFile()方法中定义了接口,可以通过传入已经上传的chunkId来达到续传功能。

哈希进度:在文件读取,转哈希时会将文件全部读取,并逐步转md5,所以耗费时间较多,在hashProgress(progress)中可以获取进度

小于切片大小的文件:TODO

开源协议

MIT

参数

(请勿随意修改,只读,修改参数请通过接口修改)

| 参数名称 | 含义 |类型 | 值 | --------------- | -------------------------------------------- |------|--------| | size | 切片大小,默认1m |Number| 默认1024*1024 | mode | 发送请求方式,有并行和串行,默认串行 |String| 'serial'||'parallel' | accept | 上传文件类型 | Array[String] | 默认不限制。例:['.zip','.png']

实例上的参数

(请勿随意修改,只读,修改参数请通过接口修改)

| 参数名称 | 含义 | | --------------- | -------------------------------------------- | | state | 生命周期(ready parse upload paused finish destroy fail) | | chunkSize | 分片大小 | | fileId | 文件hash值 | | hashProgress | 计算hash回调函数 | | fileChunkList | 切片后的文件 | | file | 文件 | | fileSize | 文件名称 | | chunkLength | 分片数量 | | paused | 暂停 | | mode | 模式(并行:parallel,串行:serial) | | customReq | 自定义请求 |

生命周期|钩子函数

| 方法名称 | 参数 | 功能 | | --------------- | ----------------------------------------------------- | -------------- | | hashProgress | progress: 进度信息 | 文件转哈希读取中 | | onFileReadEnd | file, fileId | 文件读取完成 | | onUpload | progress:总体上传进度,chunkId | 文件上传完成 | | onFullUpload | fileId | 全部上传完成 | | onPaused | 无 | 暂停后 | | onContinue | 无 | 继续后 | | onDestroy | 无 | 销毁后 | | onRestart | 无 | 重置后 |

方法

| 方法名称 | 参数 | | ---------------- | ---------------------------------------------------- | | readFile | 无 | 打开文件对话框读取文件 | | ChunkUploadFile | 传入:可选{size:number,mode:string},size:为切片大小,mode为模式:并行:parallel(无法使用暂停继续),串行:serial | | sendFile | {customReq:function,savedChunkIds:Array}, customReq:funtion(file:File, next:function){}自自定义是上传函数,必穿,传入file:单个切片文件,next完成上传后调用。savedChunkIds:可选,chunkId数组 | | continueUpload | 续传 | | pauseUpload | 暂停 | | destroy | 销毁当前实例(若要彻底销毁请将实例赋值null) | | restart | 重置当前实例 |

联系我

[email protected]