init

.gitignore

@@ -0,0 +1 @@
+/node_modules

.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"
+        },
+
+    ]
+}

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);
+}

file.html

@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta http-equiv="X-UA-Compatible" content="ie=edge">
+    <script src="./node_modules/file-saver/src/FileSaver.js"></script>
+    <script src="base64.js"> </script>
+    <script src="ajax.js" defer></script>
+    <title>文件传输</title>
+</head>
+
+<body>
+    <button onclick=getFileList()>获取文件列表</button>
+    <ul id="FileList"></ul>
+    <div id="PictureShow"></div>
+    <div id="message"></div>
+</body>
+
+</html>

package-lock.json

@@ -0,0 +1,376 @@
+{
+  "name": "internet",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "accepts": {
+      "version": "1.3.5",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.5.tgz",
+      "integrity": "sha1-63d99gEXI6OxTopywIBcjoZ0a9I=",
+      "requires": {
+        "mime-types": "~2.1.18",
+        "negotiator": "0.6.1"
+      }
+    },
+    "array-flatten": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
+      "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
+    },
+    "async-limiter": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.0.tgz",
+      "integrity": "sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg=="
+    },
+    "body-parser": {
+      "version": "1.18.3",
+      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.18.3.tgz",
+      "integrity": "sha1-WykhmP/dVTs6DyDe0FkrlWlVyLQ=",
+      "requires": {
+        "bytes": "3.0.0",
+        "content-type": "~1.0.4",
+        "debug": "2.6.9",
+        "depd": "~1.1.2",
+        "http-errors": "~1.6.3",
+        "iconv-lite": "0.4.23",
+        "on-finished": "~2.3.0",
+        "qs": "6.5.2",
+        "raw-body": "2.3.3",
+        "type-is": "~1.6.16"
+      }
+    },
+    "bytes": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.0.0.tgz",
+      "integrity": "sha1-0ygVQE1olpn4Wk6k+odV3ROpYEg="
+    },
+    "content-disposition": {
+      "version": "0.5.2",
+      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.2.tgz",
+      "integrity": "sha1-DPaLud318r55YcOoUXjLhdunjLQ="
+    },
+    "content-type": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/content-type/-/content-type-1.0.4.tgz",
+      "integrity": "sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA=="
+    },
+    "cookie": {
+      "version": "0.3.1",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.3.1.tgz",
+      "integrity": "sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s="
+    },
+    "cookie-signature": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
+      "integrity": "sha1-4wOogrNCzD7oylE6eZmXNNqzriw="
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+    "debug": {
+      "version": "2.6.9",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
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+      "requires": {
+        "ms": "2.0.0"
+      }
+    },
+    "depd": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.2.tgz",
+      "integrity": "sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak="
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+    "destroy": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/destroy/-/destroy-1.0.4.tgz",
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+      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
+      "integrity": "sha512-BvE/TwpZX4FXExxOxZyRGQQv651MSwmWKZGqvmPcRIjDqWub67kTKuIMx43cZZrS/cBBzwBcNDWoFxt2XEFIpQ=="
+    },
+    "statuses": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.4.0.tgz",
+      "integrity": "sha512-zhSCtt8v2NDrRlPQpCNtw/heZLtfUDqxBM1udqikb/Hbk52LK4nQSwr10u77iopCW5LsyHpuXS0GnEc48mLeew=="
+    },
+    "type-is": {
+      "version": "1.6.16",
+      "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.16.tgz",
+      "integrity": "sha512-HRkVv/5qY2G6I8iab9cI7v1bOIdhm94dVjQCPFElW9W+3GeDOSHmy2EBYe4VTApuzolPcmgFTN3ftVJRKR2J9Q==",
+      "requires": {
+        "media-typer": "0.3.0",
+        "mime-types": "~2.1.18"
+      }
+    },
+    "unpipe": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
+      "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw="
+    },
+    "utils-merge": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
+      "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
+    },
+    "vary": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
+      "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
+    },
+    "ws": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-6.1.0.tgz",
+      "integrity": "sha512-H3dGVdGvW2H8bnYpIDc3u3LH8Wue3Qh+Zto6aXXFzvESkTVT6rAfKR6tR/+coaUvxs8yHtmNV0uioBF62ZGSTg==",
+      "requires": {
+        "async-limiter": "~1.0.0"
+      }
+    }
+  }
+}

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"
+  }
+}

source/cmn.txt

@@ -0,0 +1 @@
+cnm,<2C><><EFBFBD><EFBFBD>

src/index.js

@@ -0,0 +1,4 @@
+var server = require('./server')
+var fs = require('fs')
+
+server.createServer();

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;