commit e5d6523a01ca18142a847b756e25c8dd626eb0e9 Author: Xianbei233 <455482921@qq.com> Date: Wed Nov 7 19:02:35 2018 +0800 init diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..30bc162 --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +/node_modules \ No newline at end of file diff --git a/.vscode/launch.json b/.vscode/launch.json new file mode 100644 index 0000000..42e86d4 --- /dev/null +++ b/.vscode/launch.json @@ -0,0 +1,17 @@ +{ + // 使用 IntelliSense 了解相关属性。 + // 悬停以查看现有属性的描述。 + // 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387 + "version": "0.2.0", + "configurations": [{ + "type": "chrome", + "request": "launch", + "name": "Launch Chrome against localhost", + "url": "http://localhost:8989", + "sourceMaps": true, + "webRoot": "${workspaceRoot}", + "userDataDir": "{workspaceRoot}/.vscode/chrome" + }, + + ] +} \ No newline at end of file diff --git a/ajax.js b/ajax.js new file mode 100644 index 0000000..1c51ed8 --- /dev/null +++ b/ajax.js @@ -0,0 +1,126 @@ +const ws = new WebSocket("ws://localhost:8989"); +let downloadname + +ws.onopen = () => { + ws.send("hello server") +} + +ws.onclose = () => { + console.log('服务器断开了连接') +} +ws.onmessage = (message) => { + console.log('收到服务器消息') + const BlobReader = new FileReader() + let data = message.data + + + if (isJSON(data)) { + document.getElementById('FileList').innerHTML = "" + document.getElementById('message').innerHTML = "" + data = JSON.parse(data) + if (data instanceof Array) { + for (let n = 0; n < data.length; n++) { + let list = document.createElement("input") + const br = document.createElement("br") + list.setAttribute('type', 'radio') + list.setAttribute('value', data[n]) + list.setAttribute('name', 'option') + document.getElementById('FileList').append(list) + document.getElementById('FileList').append(data[n]) + document.getElementById('FileList').append(br) + } + let button = document.createElement('button') + button.setAttribute('onclick', 'download()') + button.innerText = '接收' + document.getElementById('FileList').append(button) + } + + } + if (isJSON(data) == false && data == '连接成功') { + + document.getElementById('message').append(data) + + } + if (data instanceof Blob) { + + const cv = document.createElement('canvas') + const img = new Image(); + const reader = new FileReader(); + let src + blobToDataURL(data, (url) => { + src = url.replace('application/octet-stream', 'png') + img.src = src + + img.onload = function () { + if (this.width && this.height) { + const ctx = cv.getContext('2d'); + cv.setAttribute('width', this.width) + cv.setAttribute('height', this.height) + ctx.drawImage(this, 0, 0, this.width, this.height, 0, 0, this.width, this.height); //this即是imgObj,保持图片的原始大小：470*480 + //ctx.drawImage(this, 0, 0,1024,768);//改变图片的大小到1024*768 + document.getElementById('PictureShow').append(cv) + /*cv.toBlob(function (blob) { + saveAs(blob, downloadname); + });*/ + } + + } + }) + + console.log('下载启动') + console.log(data) + var file = new File([data], downloadname); //浏览器原生解码不支持中文 + saveAs(file); + + + + } + + + +} +ws.onerror = (err) => { + console.log(err) +} + +function getFileList() { + + ws.send('getFile') +} + +function download() { + var radio = document.getElementsByName("option"); + for (i = 0; i < radio.length; i++) { + if (radio[i].checked) { + downloadname = radio[i].value + ws.send(radio[i].value) + } + } + + +} + +function isJSON(str) { + if (typeof str == 'string') { + try { + var obj = JSON.parse(str); + if (typeof obj == 'object' && obj) { + return true; + } else { + return false; + } + + } catch (e) { + + return false; + } + } +} + +function blobToDataURL(blob, callback) { + var a = new FileReader(); + a.onload = function (e) { + callback(e.target.result); + } + a.readAsDataURL(blob); +} \ No newline at end of file diff --git a/file.html b/file.html new file mode 100644 index 0000000..fad52fb --- /dev/null +++ b/file.html @@ -0,0 +1,21 @@ + + + + + + + + + + + 文件传输 + + + + + +
+
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index 0000000..b3370a5 --- /dev/null +++ b/package.json @@ -0,0 +1,16 @@ +{ + "name": "internet", + "version": "1.0.0", + "description": "", + "main": "index.js", + "scripts": { + "test": "echo \"Error: no test specified\" && exit 1" + }, + "author": "xianbei233", + "license": "ISC", + "dependencies": { + "express": "^4.16.4", + "file-saver": "^2.0.0-rc.4", + "ws": "^6.1.0" + } +} diff --git a/source/480px-Jeanne_d'Arc_(Themed)_A.png b/source/480px-Jeanne_d'Arc_(Themed)_A.png new file mode 100644 index 0000000..2adce21 Binary files /dev/null and b/source/480px-Jeanne_d'Arc_(Themed)_A.png differ diff --git a/source/480px-Jeanne_d'Arc_(Themed)_B.png b/source/480px-Jeanne_d'Arc_(Themed)_B.png new file mode 100644 index 0000000..a454d3d Binary files /dev/null and b/source/480px-Jeanne_d'Arc_(Themed)_B.png differ diff --git a/source/cmn.txt b/source/cmn.txt new file mode 100644 index 0000000..ee403d1 --- /dev/null +++ b/source/cmn.txt @@ -0,0 +1 @@ +cnm, diff --git a/src/index.js b/src/index.js new file mode 100644 index 0000000..62d0018 --- /dev/null +++ b/src/index.js @@ -0,0 +1,4 @@ +var server = require('./server') +var fs = require('fs') + +server.createServer(); \ No newline at end of file diff --git a/src/server.js b/src/server.js new file mode 100644 index 0000000..a9cb130 --- /dev/null +++ b/src/server.js @@ -0,0 +1,73 @@ +/* +1.前后端解决协议传送首部行替换问题(使用ws模块) +2.读文件列表 +3.是文件夹则继续读文件列表 是文件则传输文件 +4.前端显示图片或者保存文件(使用filesaver.js) +*/ + +function webServer() { + const fs = require('fs'); + const WebSocket = require('ws'); + const wss = new WebSocket.Server({ + port: 8989 + }, () => { + console.log('websocket服务器建立') + }) + const path = require('path') + const pathPublic = path.join(__dirname, '../source') + let currentPath = pathPublic + + wss.on('connection', function (ws) { + console.log('客户端连接') + ws.on('close', (e) => { + console.log(e) + }) + ws.on('message', (message) => { + console.log(message) + if (message == 'hello server') { + ws.send('连接成功') + } + if (message == 'getFile') { + fs.readdir(pathPublic, function (err, files) { + if (!files.length) { + files = "No files to show" + ws.send(files) + } else { + console.log(files) + ws.send(JSON.stringify(files)) + } + }) + } + if (message != 'hello server' && message != 'getFile') { + fs.stat(path.join(pathPublic, message), (err, stat) => { + if (stat.isDirectory()) { + fs.readdir(path.join(pathPublic, message), function (err, files) { + if (!files.length) { + files = "No files to show" + ws.send(files) + } else { + console.log(files) + ws.send(JSON.stringify(files)) + } + }) + } + if (stat.isFile()) { + fs.readFile(path.join(pathPublic, message), (err, data) => { + console.log(path.join(pathPublic, message)) + console.log('文件发送') + + ws.send(data) + }) + } else { + ws.send(err) + } + }) + + } + }) + }) + +} + + +exports.createServer = webServer; \ No newline at end of file