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file-parse

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N1KO 2024-12-19 17:16:16 +08:00
parent 6b39521805
commit bbc1258a40
1 changed files with 58 additions and 39 deletions
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97
baogutang-admin/src/main/resources/templates/file-baogutang.html
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@ -5,9 +5,9 @@
<meta name="viewport" content="width=device-width, initial-scale=1.0"/> <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<link rel="icon" type="image/png" href="NIKO.png"/> <link rel="icon" type="image/png" href="NIKO.png"/>
<title>BAOGUTANG-FILE</title> <title>BAOGUTANG-FILE</title>
<link href="css/bootstrap.min.css" rel="stylesheet" th:href="@{css/bootstrap.min.css}"> <link href="css/bootstrap.min.css" rel="stylesheet">
<link href="css/font-awesome.min.css" rel="stylesheet" th:href="@{css/font-awesome.min.css}"> <link href="css/font-awesome.min.css" rel="stylesheet">
<link href="css/base.css" rel="stylesheet" th:href="@{css/base.css}"> <link href="css/base.css" rel="stylesheet">
<style> <style>
body { body {
font-family: "Microsoft YaHei", Arial, sans-serif; font-family: "Microsoft YaHei", Arial, sans-serif;
@ -16,18 +16,6 @@
padding: 0; padding: 0;
} }
/* 顶部标题条 */
.top-bar {
background-color: #50b3a2; /* 可根据需求调整颜色，参考截图中的色调 */
padding: 20px;
}
.top-bar h1 {
margin: 0;
font-size: 20px;
font-weight: bold;
color: #fff; /* 标题文字颜色为白色，突出标题 */
}
.container { .container {
max-width: 1200px; max-width: 1200px;
margin: 20px auto; margin: 20px auto;
@ -37,18 +25,22 @@
border-radius: 5px; border-radius: 5px;
box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1); box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
} }
h3 { h3 {
color: #444; color: #444;
margin-bottom: 10px; margin-bottom: 10px;
} }
.section { .section {
margin-bottom: 30px; margin-bottom: 30px;
} }
label { label {
font-weight: bold; font-weight: bold;
margin-bottom: 5px; margin-bottom: 5px;
display: block; display: block;
} }
input[type="file"], textarea, button { input[type="file"], textarea, button {
width: 100%; width: 100%;
margin-bottom: 10px; margin-bottom: 10px;
@ -57,30 +49,44 @@
border-radius: 3px; border-radius: 3px;
font-size: 14px; font-size: 14px;
} }
button { button {
background-color: rgb(98, 210, 161); background-color: rgb(98, 210, 161);
color: white; color: white;
cursor: pointer; cursor: pointer;
border: none; border: none;
} }
button:hover { button:hover {
background-color: rgba(98, 210, 161, 0.8); background-color: rgba(98, 210, 161, 0.8);
} }
textarea { textarea {
height: 150px; height: 150px;
resize: none; resize: none;
} }
.preview { .preview {
margin-top: 10px; margin-top: 10px;
min-height: 200px;
transition: opacity 0.3s ease; /* 添加过渡 */
opacity: 1;
} }
.preview.hide {
opacity: 0;
}
img, iframe { img, iframe {
max-width: 100%; max-width: 100%;
border: 1px solid #ddd; border: 1px solid #ddd;
border-radius: 3px; border-radius: 3px;
} }
iframe { iframe {
height: 80vh; /* PDF预览高度设置为屏幕高度的80% */ height: 80vh;
} }
.download-link { .download-link {
display: block; display: block;
margin-top: 10px; margin-top: 10px;
@ -88,21 +94,23 @@
text-decoration: none; text-decoration: none;
font-weight: bold; font-weight: bold;
} }
.download-link:hover { .download-link:hover {
text-decoration: underline; text-decoration: underline;
} }
.divider { .divider {
margin: 30px 0; margin: 30px 0;
border-top: 1px solid #ddd; border-top: 1px solid #ddd;
} }
/* 类型选项按钮组样式 */
.type-options { .type-options {
display: flex; display: flex;
gap: 10px; gap: 10px;
margin-bottom: 10px; margin-bottom: 10px;
flex-wrap: wrap; flex-wrap: wrap;
} }
.type-option { .type-option {
flex: 0 0 auto; flex: 0 0 auto;
padding: 10px; padding: 10px;
@ -116,17 +124,17 @@
user-select: none; user-select: none;
transition: background-color 0.2s; transition: background-color 0.2s;
} }
.type-option:hover { .type-option:hover {
background-color: #eee; background-color: #eee;
} }
.type-option.active { .type-option.active {
background-color: rgb(98, 210, 161); background-color: rgb(98, 210, 161);
color: #fff; color: #fff;
border-color: rgb(98, 210, 161); border-color: rgb(98, 210, 161);
} }
</style> </style>
<script src="http://cdn.bootcss.com/html5shiv/3.7.2/html5shiv.min.js"></script>
<script src="http://cdn.bootcss.com/respond.js/1.4.2/respond.min.js"></script>
</head> </head>
<body style="over-flow:hidden;"> <body style="over-flow:hidden;">
<header class="header"> <header class="header">
@ -168,14 +176,13 @@
</div> </div>
<button onclick="convertToFile()">转换为文件并预览</button> <button onclick="convertToFile()">转换为文件并预览</button>
<div class="preview" id="previewArea"></div> <div class="preview hide" id="previewArea"></div>
</div> </div>
</div> </div>
<script> <script>
let selectedType = 'auto'; let selectedType = 'auto';
// 页面加载时默认选中“自动识别”
window.addEventListener('DOMContentLoaded', () => { window.addEventListener('DOMContentLoaded', () => {
resetTypeSelection(); resetTypeSelection();
}); });
@ -191,7 +198,6 @@
}); });
} }
// 点击类型选项按钮，更新选中状态
document.getElementById('typeOptions').addEventListener('click', (e) => { document.getElementById('typeOptions').addEventListener('click', (e) => {
if (e.target.classList.contains('type-option')) { if (e.target.classList.contains('type-option')) {
const typeOptions = document.querySelectorAll('.type-option'); const typeOptions = document.querySelectorAll('.type-option');
@ -201,7 +207,6 @@
} }
}); });
// 将文件转换为 Base64
function convertToBase64() { function convertToBase64() {
const fileInput = document.getElementById('fileInput'); const fileInput = document.getElementById('fileInput');
const base64Output = document.getElementById('base64Output'); const base64Output = document.getElementById('base64Output');
@ -222,10 +227,9 @@
alert('文件读取失败！'); alert('文件读取失败！');
}; };
reader.readAsDataURL(file); // 将文件读取为 Base64 reader.readAsDataURL(file);
} }
// 将 Base64 转换为文件并预览
function convertToFile() { function convertToFile() {
const base64Input = document.getElementById('base64Input'); const base64Input = document.getElementById('base64Input');
const previewArea = document.getElementById('previewArea'); const previewArea = document.getElementById('previewArea');
@ -234,34 +238,30 @@
if (!inputValue) { if (!inputValue) {
alert('请提供有效的 Base64 字符串！'); alert('请提供有效的 Base64 字符串！');
// 清空后恢复自动识别
resetTypeSelection(); resetTypeSelection();
return; return;
} }
// 清空预览区域 // 隐藏预览区（淡出）
previewArea.innerHTML = ''; previewArea.classList.add('hide');
let finalBase64 = inputValue; let finalBase64 = inputValue;
let mimeType = ''; let mimeType = '';
// 根据选中类型进行处理
if (selectedType === 'auto') { if (selectedType === 'auto') {
let headerMatch = finalBase64.match(/^data:(.*);base64,/); let headerMatch = finalBase64.match(/^data:(.*);base64,/);
if (headerMatch) { if (headerMatch) {
mimeType = headerMatch[1]; mimeType = headerMatch[1];
finalBase64 = finalBase64.substring(finalBase64.indexOf(',')+1); finalBase64 = finalBase64.substring(finalBase64.indexOf(',')+1);
} else { } else {
// 未选择类型且无头信息则默认使用application/octet-stream
mimeType = 'application/octet-stream'; mimeType = 'application/octet-stream';
} }
} else { } else {
// 用户选择了特定类型
finalBase64 = finalBase64.replace(/^data:.*;base64,/, ''); finalBase64 = finalBase64.replace(/^data:.*;base64,/, '');
mimeType = selectedType; mimeType = selectedType;
} }
const binary = atob(finalBase64); // 解码 Base64 const binary = atob(finalBase64);
const arrayBuffer = new Uint8Array(binary.length); const arrayBuffer = new Uint8Array(binary.length);
for (let i = 0; i < binary.length; i++) { for (let i = 0; i < binary.length; i++) {
@ -271,23 +271,25 @@
const blob = new Blob([arrayBuffer], { type: mimeType }); const blob = new Blob([arrayBuffer], { type: mimeType });
const fileUrl = URL.createObjectURL(blob); const fileUrl = URL.createObjectURL(blob);
// 下载链接 const fragment = document.createDocumentFragment();
const downloadLink = document.createElement('a'); const downloadLink = document.createElement('a');
downloadLink.href = fileUrl; downloadLink.href = fileUrl;
downloadLink.download = 'converted_file'; downloadLink.download = 'converted_file';
downloadLink.textContent = '点击下载文件'; downloadLink.textContent = '点击下载文件';
downloadLink.className = 'download-link'; downloadLink.className = 'download-link';
previewArea.appendChild(downloadLink); fragment.appendChild(downloadLink);
// 根据文件类型生成预览
if (mimeType.startsWith('image/')) { if (mimeType.startsWith('image/')) {
const img = document.createElement('img'); const img = document.createElement('img');
img.src = fileUrl; img.src = fileUrl;
previewArea.appendChild(img); fragment.appendChild(img);
updatePreview(fragment);
} else if (mimeType === 'application/pdf') { } else if (mimeType === 'application/pdf') {
const iframe = document.createElement('iframe'); const iframe = document.createElement('iframe');
iframe.src = fileUrl; iframe.src = fileUrl;
previewArea.appendChild(iframe); fragment.appendChild(iframe);
updatePreview(fragment);
} else if (mimeType.startsWith('text/')) { } else if (mimeType.startsWith('text/')) {
const reader = new FileReader(); const reader = new FileReader();
reader.onload = function (e) { reader.onload = function (e) {
@ -295,14 +297,31 @@
textArea.value = e.target.result; textArea.value = e.target.result;
textArea.style.width = '100%'; textArea.style.width = '100%';
textArea.style.height = '200px'; textArea.style.height = '200px';
previewArea.appendChild(textArea); fragment.appendChild(textArea);
updatePreview(fragment);
}; };
reader.readAsText(blob); reader.readAsText(blob);
} else if (mimeType.startsWith('video/')) { } else if (mimeType.startsWith('video/')) {
const video = document.createElement('video'); const video = document.createElement('video');
video.controls = true; video.controls = true;
video.src = fileUrl; video.src = fileUrl;
previewArea.appendChild(video); fragment.appendChild(video);
updatePreview(fragment);
} else {
// 其他类型，不预览，只提供下载
updatePreview(fragment);
}
function updatePreview(fragment) {
// 将新内容插入前，先等待CSS过渡结束后再显示，减少闪动感
// 这里可以直接替换内容，然后在下一个事件循环中取消hide类以渐显
previewArea.innerHTML = '';
previewArea.appendChild(fragment);
// 使用requestAnimationFrame在下一帧再移除'hide'类，保证CSS有机会渲染
requestAnimationFrame(() => {
previewArea.classList.remove('hide');
});
} }
} }
</script> </script>