feat:增加视频压缩文档

This commit is contained in:
2026-01-29 15:01:35 +08:00
parent b39d345da9
commit cbe8821376
5 changed files with 686 additions and 7 deletions

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@@ -15,7 +15,8 @@ export const routers = [
{ text: 'JavaScript知识点整理', link: '/Web-Front/Others/JavaScript-Guide' },
{ text: '前端包管理器', link: '/Web-Front/Others/Package' },
{ text: 'Vite核心原理', link: '/Web-Front/Others/Vite-Principle' },
{ text: '浏览器渲染全流程解析', link: '/Web-Front/Others/Browser-Process' }
{ text: '浏览器渲染全流程解析', link: '/Web-Front/Others/Browser-Process' },
{ text: 'Element Plus 上传器', link: '/Web-Front/Others/ElUpload' }
]
},
]
@@ -61,7 +62,8 @@ export const routers = [
items: [
{ text: 'RustFS简介和使用', link: '/Web-Backend/Others/RustFS' },
{ text: 'AList简介和使用', link: '/Web-Backend/Others/AList' },
{ text: '网络编程简介', link: '/Web-Backend/Others/Netword-Program' }
{ text: '网络编程简介', link: '/Web-Backend/Others/Netword-Program' },
{ text: '视频压缩', link: '/Web-Backend/Others/VideoCompressor' }
]
},
]

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@@ -3,8 +3,6 @@
date: 2026-01-23
---
  接口文档地址:[接口](https://developer.work.weixin.qq.com/document/path/90664)
# 一、建立工作台
1. 进入企业微信后台管理系统,选择应用管理->应用管理。
2. 选择自建->创建应用。
@@ -19,12 +17,12 @@
# 二、JS-SDK开发
## 2.1 接口鉴权
  [官方文档](https://developer.work.weixin.qq.com/document/path/90514)
  参考第三节企业微信接口开发
  参考第三节企业微信鉴权接口开发
## 2.2 打开默认浏览器
  使用系统浏览器打开指定 URL支持传入 oauth2 链接,从而实现在系统浏览器内免登录的效果。
# 三、接口开发
# 三、鉴权接口开发
  本教程以node.js为例。
## 3.1 通用企业微信服务端API
```js
@@ -448,4 +446,64 @@ module.exports = {
  将该应用主页的URL放在工作台的应用主页中。
::: tip
需要在前端工程中配置路由参数访问即通过ip:port/#/login?username=''&password=''的形式访问。
:::
:::
::: tip
如果需要在发送应用消息时可以点击消息访问应用绑定的URL链接也是该应用主页的链接。
:::
# 五、使用
  本教程以SpringBoot为例。
## 5.1 配置RestClient
```java
@Configuration
public class RestClientConfig {
final String weiComBaseUrl = "";
@Bean
public RestClient weiComClient() {
SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();
factory.setConnectTimeout(Duration.ofSeconds(5));
factory.setReadTimeout(Duration.ofSeconds(10));
return RestClient.builder()
.requestFactory(factory)
.baseUrl(weiComBaseUrl)
.defaultHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
.defaultHeader(HttpHeaders.ACCEPT, MediaType.APPLICATION_JSON_VALUE)
.build();
}
}
```
## 5.2 调用发送消息接口
```java
@Service
@Slf4j
public class NoticeService {
@Resource
private RestClient weiComClient;
@Async
public void sendRepairMessage(String touser, String content) {
String link = "";
WeComNoticeRequest request = new WeComNoticeRequest();
request.setTouser(touser);
request.setContent(content + "\n点击打开工作台应用" + "<a href=\"" + link + "\">打开应用</a>");
WeComResponse response = weiComClient.post()
.uri("/message/repair")
.contentType(MediaType.APPLICATION_JSON)
.body(request)
.retrieve()
.body(WeComResponse.class);
if (response == null || response.getErrcode() != 0) {
throw new CustomException("企业微信发送消息失败 请联系管理员");
}
}
}
```
# 附录
企业微信官方文档:[接口](https://developer.work.weixin.qq.com/document/path/90664)

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@@ -456,3 +456,66 @@ public class BlobToBase64TypeHandler extends BaseTypeHandler<String> {
}
}
```
&emsp;&emsp;例如自定义一个处理敏感字段(如密码、手机号)的自动加解密:
```java
public class EncryptTypeHandler extends BaseTypeHandler<String> {
@Override
public void setNonNullParameter(PreparedStatement ps, int i, String parameter, JdbcType jdbcType) throws SQLException {
ps.setString(i, AESUtil.encrypt(parameter)); // 自定义加密方法
}
@Override
public String getNullableResult(ResultSet rs, String columnName) throws SQLException {
String encrypted = rs.getString(columnName);
return AESUtil.decrypt(encrypted); // 自定义解密方法
}
}
```
&emsp;&emsp;然后在实体类字段上加上 @TableField(typeHandler = EncryptTypeHandler.class)
```java
@TableName("user")
public class User {
private Long id;
private String name;
// 这个字段在数据库里存的是加密后的字符串
@TableField(typeHandler = EncryptTypeHandler.class)
private String phone; // 例如 "13800138000" → 存为 "U2FsdGVkX1+oO1W..."
@TableField(typeHandler = EncryptTypeHandler.class)
private String idCard; // 身份证号
// 普通字段,不加密
private String email;
}
```
&emsp;&emsp;如果是在XML文件中查询需要指定TypeHandler
```xml
<resultMap id="UserResultMap" type="com.example.entity.User">
<id column="id" property="id" />
<result column="name" property="name" />
<!-- 关键phone 字段使用 EncryptTypeHandler -->
<result column="phone" property="phone" typeHandler="com.example.handler.EncryptTypeHandler"/>
<!-- idCard 字段也用同一个处理器 -->
<result column="id_card" property="idCard" typeHandler="com.example.handler.EncryptTypeHandler"/>
<result column="email" property="email" />
</resultMap>
```
&emsp;&emsp;MyBatisPlus中定义了一些常用的类型处理器例如JacksonTypeHandler
```java
@TableField(value = "fault_type", typeHandler = JacksonTypeHandler.class)
```
&emsp;&emsp;在XML文件中将typeHandler设置为`com.baomidou.mybatisplus.extension.handlers.JacksonTypeHandler`
# 六、MyBatis/MyBatis Plus常见问题
1. 更新值为null的字段时会失效
&emsp;&emsp;需要更改字段的更新策略:
```java
@TableField(value = "file_name", updateStrategy = FieldStrategy.ALWAYS)
```

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@@ -0,0 +1,243 @@
---
title: 视频压缩
date: 2026-01-29
---
# 一、简介
&emsp;&emsp;视频码率Bit Rate指的是视频文件在单位时间内通常是每秒所包含的数据量。单位通常是 Mbps兆比特每秒或 Kbps千比特每秒
&emsp;&emsp;码率越高:视频中包含的细节信息越多,画面越清晰、色彩越丰富、动态画面(如快速运动、爆炸等)越流畅,不容易出现马赛克或模糊。但代价是文件体积越大,传输所需的网络带宽也越高。码率越低:视频文件更小,传输更快,但在复杂画面中容易产生压缩瑕疵(如马赛克、模糊、色带等)。
&emsp;&emsp;如果不压缩原始视频数据量极其庞大一部2小时的未压缩1080p电影可能占用数TB的存储空间普通硬盘无法承受家庭宽带或移动网络无法实时传输如此巨大的数据量视频播放会不断卡顿。
&emsp;&emsp;如果服务器的带宽为10M适合 720p勉强支持低码率 1080p。
# 二、引入依赖
```xml
<!-- Jave 2 视频处理库 -->
<dependency>
<groupId>ws.schild</groupId>
<artifactId>jave-all-deps</artifactId>
<version>3.5.0</version>
</dependency>
```
# 三、工具类
```java
import lombok.extern.slf4j.Slf4j;
import ws.schild.jave.Encoder;
import ws.schild.jave.MultimediaObject;
import ws.schild.jave.encode.AudioAttributes;
import ws.schild.jave.encode.EncodingAttributes;
import ws.schild.jave.encode.VideoAttributes;
import ws.schild.jave.info.VideoSize;
import java.io.File;
/**
* 视频压缩工具类
* 提供将视频压缩到720p的静态方法
*/
@Slf4j
public class VideoCompressor {
// 支持的视频格式
private static final String[] SUPPORTED_FORMATS = {
".mp4", ".avi", ".mov", ".mkv", ".flv",
".wmv", ".webm", ".mpeg", ".mpg", ".3gp"
};
// 压缩参数常量
private static final int TARGET_WIDTH = 1280;
private static final int TARGET_HEIGHT = 720;
private static final int VIDEO_BITRATE = 1500000; // 1.5 Mbps
private static final int AUDIO_BITRATE = 128000; // 128 kbps
private static final String VIDEO_CODEC = "libx264";
private static final String AUDIO_CODEC = "aac";
private static final String OUTPUT_FORMAT = "mp4";
private static final String OUTPUT_SUFFIX = "_720p.mp4";
private static final int MAX_BITRATE = 2500; // 2.5 Mbps
private static final int MIN_BITRATE = 1000; // 1 Mbps
/**
* 压缩视频到720p统一输出为MP4格式
*
* @param inputFile 输入视频文件
* @return 压缩后的视频文件,如果不需要压缩则返回原文件
* @throws Exception 压缩过程中可能出现的异常
*/
public static File compressTo720p(File inputFile) throws Exception {
if (!isSupportedVideoFile(inputFile)) {
log.info("文件格式不支持或文件不存在,直接返回源文件");
return inputFile;
}
// 判断是否需要压缩
if (!needCompression(inputFile)) {
return inputFile;
}
File outputFile = createOutputFile(inputFile);
Encoder encoder = new Encoder();
// 配置编码参数
EncodingAttributes encodingAttributes = createEncodingAttributes();
log.info("开始压缩视频: {} -> {}", inputFile.getName(), outputFile.getName());
encoder.encode(new MultimediaObject(inputFile), outputFile, encodingAttributes);
log.info("视频压缩完成: {}", outputFile.getName());
return outputFile;
}
/**
* 智能判断视频是否需要压缩
* 基于分辨率、码率、数据密度等多维度综合判断
*/
public static boolean needCompression(File videoFile) throws Exception {
MultimediaObject media = new MultimediaObject(videoFile);
// 获取视频基本信息
double fileSizeMB = videoFile.length() / 1048576.0; // 转换为MB
double duration = media.getInfo().getDuration() / 1000.0;
int bitRateKbps = media.getInfo().getVideo().getBitRate() / 1000; // 转换为kbps
// 获取视频分辨率
int width = media.getInfo().getVideo().getSize().getWidth();
int height = media.getInfo().getVideo().getSize().getHeight();
log.info("视频分析: 分辨率 {}x{}, 大小 {}MB, 时长 {}秒, 码率约 {}kbps", width, height, fileSizeMB, duration, bitRateKbps);
// 判断逻辑:基于分辨率和码率的智能判断
boolean needsCompression = false;
// 1. 如果分辨率已经<=720p检查码率是否过高
if (height <= TARGET_HEIGHT && width <= TARGET_WIDTH) {
if (bitRateKbps > MAX_BITRATE) {
log.info("视频分辨率达标但码率({}kbps)过高,需要压缩", bitRateKbps);
needsCompression = true;
} else {
log.info("视频分辨率已达720p或以下且码率合理无需压缩");
}
}
// 2. 如果分辨率>720p但码率很低说明已是优化过的视频无需压缩
else if (height > TARGET_HEIGHT && bitRateKbps < MIN_BITRATE) {
log.info("视频虽为{}p高分辨率但码率({}kbps)已优化,无需压缩", height, bitRateKbps);
}
// 3. 高分辨率+高码率,需要压缩
else if (height > TARGET_HEIGHT && bitRateKbps >= MAX_BITRATE) {
log.info("视频为{}p高分辨率且码率较高({}kbps)需要压缩至720p", height, bitRateKbps);
needsCompression = true;
}
// 4. 其他情况(如异常数据)默认不压缩
else {
log.info("视频参数异常,保守处理:不进行压缩");
}
return needsCompression;
}
/**
* 检查文件是否为支持的视频格式
*/
private static boolean isSupportedVideoFile(File file) {
if (file == null || !file.exists()) {
return false;
}
String filename = file.getName().toLowerCase();
for (String format : SUPPORTED_FORMATS) {
if (filename.endsWith(format)) {
return true;
}
}
return false;
}
/**
* 创建输出文件对象
*/
private static File createOutputFile(File inputFile) {
String baseName = getFileBaseName(inputFile.getName());
String outputFilename = baseName + OUTPUT_SUFFIX;
return new File(inputFile.getParent(), outputFilename);
}
/**
* 获取文件名(不含扩展名)
*/
private static String getFileBaseName(String filename) {
int dotIndex = filename.lastIndexOf('.');
return (dotIndex == -1) ? filename : filename.substring(0, dotIndex);
}
/**
* 创建编码配置参数
*/
private static EncodingAttributes createEncodingAttributes() {
// 音频配置
AudioAttributes audio = new AudioAttributes();
audio.setCodec(AUDIO_CODEC);
audio.setBitRate(AUDIO_BITRATE);
// 视频配置
VideoAttributes video = new VideoAttributes();
video.setCodec(VIDEO_CODEC);
video.setBitRate(VIDEO_BITRATE);
video.setSize(new VideoSize(TARGET_WIDTH, TARGET_HEIGHT));
// 编码设置
EncodingAttributes attributes = new EncodingAttributes();
attributes.setOutputFormat(OUTPUT_FORMAT);
attributes.setAudioAttributes(audio);
attributes.setVideoAttributes(video);
return attributes;
}
}
```
&emsp;&emsp;通过分辨率和码率的双重判断,确定是否需要压缩。
# 四、使用
```java
public void uploadFile(MultipartFile file, String filePath) {
try {
MultiValueMap<String, Object> body = new LinkedMultiValueMap<>();
File tempFile = convertMultipartFileToFile(file);
log.info("临时文件地址:{}", tempFile.toPath());
log.info("开始压缩文件:{}", tempFile.getName());
File compressFile = VideoCompressor.compressTo720p(tempFile);
log.info("完成压缩文件:{}", tempFile.getName());
log.info("压缩文件地址:{}", tempFile.toPath());
body.add("file", new FileSystemResource(compressFile));
aListClient.put()
.uri("api/fs/form")
.header(HttpHeaders.AUTHORIZATION, token)
.header("File-Path", filePath)
.contentType(MediaType.MULTIPART_FORM_DATA)
.body(body)
.retrieve()
.body(Map.class);
Files.deleteIfExists(compressFile.toPath());
Files.deleteIfExists(tempFile.toPath());
} catch (Exception e) {
log.error("文件上传失败{}", e.getMessage());
throw new RuntimeException("文件上传失败", e);
}
}
private File convertMultipartFileToFile(MultipartFile file) throws IOException {
String suffix = (file.getOriginalFilename() != null && file.getOriginalFilename().contains("."))
? file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf("."))
: ".tmp";
Path tempFile = Files.createTempFile(System.currentTimeMillis() + "", suffix);
file.transferTo(tempFile);
return tempFile.toFile();
}
```

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@@ -0,0 +1,313 @@
---
title: Element Plus 上传器
date: 2026-01-29
---
# 一、上传图片
```vue
<template>
<el-upload
v-model:file-list="imageFileList"
list-type="picture-card"
:on-preview="handlePreview"
:limit="3"
:before-upload="beforeUpload"
:http-request="httpRequest"
:on-exceed="handleExceed"
:before-remove="beforeRemove"
:on-remove="handleRemove"
>
<el-icon><Plus /></el-icon>
<template #tip>
<div class="el-upload__tip">
请上传小于10M的图片
</div>
</template>
<el-dialog v-model="dialogVisible">
<el-image :src="dialogImageUrl" alt="Preview Image" />
</el-dialog>
</el-upload>
</template>
<script lang="ts" setup>
import { Plus } from '@element-plus/icons-vue'
import { onMounted, ref } from 'vue'
import { ElLoading, ElMessage, ElMessageBox } from 'element-plus'
import type { UploadRequestOptions } from 'element-plus'
import type { UploadProps, UploadUserFile, UploadRawFile } from 'element-plus'
import { getFileExtension, getFileHashName, validateImage } from '@/utils/file.ts'
import { uploadFileApi } from '@/apis/file.ts'
const imageFileList = ref<UploadUserFile[]>([])
const dialogImageUrl = ref('')
const dialogVisible = ref(false)
const baseUrl = ''
const apiImageList = [] as string[]
onMounted(async () => {
imageFileList.value = []
// 根据后端传来的List数据将信息添加文件列表中
apiImageList.forEach((item, index) => {
imageFileList.value.push({
name: index.toString(),
url: `${baseUrl}${item}`
})
})
})
const beforeUpload: UploadProps['beforeUpload'] = (rawFile: UploadRawFile) => {
const maxFileMax = 1024 * 1024 * 10
const fileType = rawFile.type
const fileName = rawFile.name
const fileExtension = fileName.substring(fileName.lastIndexOf('.') + 1).toLowerCase()
if (!validateImage(fileType, fileExtension)) {
ElMessage.error('请上传图片')
return false
}
if (rawFile.size > maxFileMax) {
ElMessage.error('请上传10M以内的文件!')
return false
}
return true
}
const httpRequest: UploadProps['httpRequest'] = async (options: UploadRequestOptions): Promise<any> => {
const loading = ElLoading.service({
lock: true,
text: '文件上传中 请等待',
background: 'rgba(0, 0, 0, 0.7)'
})
try {
// 重命名文件
const filePath = `${baseUrl}/${getFileHashName(options.file.name)}.${getFileExtension(options.file.name)}`
const data = new FormData()
data.append('file', options.file)
data.append('filePath', filePath)
// 调用后端接口上传文件
await uploadFileApi(data)
apiImageList.push(filePath)
ElMessage.success('上传成功')
} catch (error) {
console.log(error)
ElMessage.error('上传失败 请联系管理员')
} finally {
loading.close()
}
}
const handleExceed: UploadProps['onExceed'] = () => {
ElMessage.warning('最多上传3张图片')
}
const handleRemove: UploadProps['onRemove'] = (uploadFile, uploadFiles) => {
const index = imageFileList.value.findIndex((item) => item.uid === uploadFile.uid)
apiImageList.splice(index, 1)
}
const handlePreview: UploadProps['onPreview'] = (uploadFile) => {
dialogImageUrl.value = uploadFile.url!
dialogVisible.value = true
}
const beforeRemove: UploadProps['beforeRemove'] = () => {
return ElMessageBox.confirm('确认删除该文件?').then(() => true, () => false)
}
</script>
```
# 二、上传视频
```vue
<template>
<el-upload
v-model:file-list="videoFileList"
:limit="1"
:before-upload="beforeUpload"
:http-request="httpRequest"
:on-exceed="handleExceed"
:before-remove="beforeRemove"
:on-remove="handleRemove"
>
<el-button type="primary">点击上传</el-button>
<template #tip>
<div class="el-upload__tip">
请上传小于200M的视频
</div>
</template>
</el-upload>
</template>
<script lang="ts" setup>
import { onMounted, ref } from 'vue'
import { ElLoading, ElMessage, ElMessageBox } from 'element-plus'
import type { UploadRequestOptions } from 'element-plus'
import type { UploadProps, UploadUserFile, UploadRawFile } from 'element-plus'
import { getFileExtension, getFileHashName, validateVideo } from '@/utils/file.ts'
import { uploadFileApi } from '@/apis/file.ts'
const videoFileList = ref<UploadUserFile[]>([])
let baseUrl = ''
const apiVideoUrl = ''
onMounted(async () => {
videoFileList.value = []
if (apiVideoUrl) {
videoFileList.value.push({
name: 'video',
url: `${baseUrl}p/${apiVideoUrl}`
})
}
})
const beforeUpload: UploadProps['beforeUpload'] = (rawFile: UploadRawFile) => {
const maxFileMax = 1024 * 1024 * 200
const fileType = rawFile.type
const fileName = rawFile.name
const fileExtension = fileName.substring(fileName.lastIndexOf('.') + 1).toLowerCase()
if (!validateVideo(fileType, fileExtension)) {
ElMessage.error('请上传视频')
return false
}
if (rawFile.size > maxFileMax) {
ElMessage.error('请上传200M以内的文件!')
return false
}
return true
}
const httpRequest: UploadProps['httpRequest'] = async (options: UploadRequestOptions): Promise<any> => {
const loading = ElLoading.service({
lock: true,
text: '文件上传中 请等待',
background: 'rgba(0, 0, 0, 0.7)'
})
try {
const filePath = `${baseUrl}/${getFileHashName(options.file.name)}.${getFileExtension(options.file.name)}`
const data = new FormData()
data.append('file', options.file)
data.append('filePath', filePath)
await uploadFileApi(data)
baseUrl = filePath
ElMessage.success('上传成功')
} catch (error) {
console.log(error)
ElMessage.error('上传失败 请联系管理员')
} finally {
loading.close()
}
}
const handleExceed: UploadProps['onExceed'] = () => {
ElMessage.warning('最多上传1个视频')
}
const beforeRemove: UploadProps['beforeRemove'] = () => {
return ElMessageBox.confirm('确认删除该文件?').then(() => true, () => false)
}
const handleRemove: UploadProps['onRemove'] = () => {
baseUrl = ''
}
</script>
```
# 三、工具类
```ts
import { hashSHA256 } from 'vue3-common/utils/cryptoUtil'
export const getFileHashName = (name: string) => {
return hashSHA256(name)
}
export const getFileExtension = (name: string) => {
return name.substring(name.lastIndexOf('.') + 1).toLowerCase()
}
export const validateExcel = (fileType: string, fileExtension: string): boolean => {
// 常见的 Excel MIME 类型
const excelMimeTypes = [
'application/vnd.ms-excel', // .xls
'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', // .xlsx
'application/vnd.ms-excel.sheet.macroEnabled.12', // .xlsm
'text/csv' // CSV
]
// 常见的 Excel 文件扩展名
const excelExtensions = ['xls', 'xlsx', 'xlsm', 'csv']
return excelMimeTypes.includes(fileType) || excelExtensions.includes(fileExtension.toLowerCase())
}
export const validateImage = (fileType: string, fileExtension: string): boolean => {
// 常见的图片 MIME 类型
const imageMimeTypes = [
'image/jpeg', // JPEG
'image/jpg', // JPG
'image/png', // PNG
'image/gif', // GIF
'image/bmp', // BMP
'image/webp', // WebP
'image/svg+xml' // SVG
]
// 常见的图片文件扩展名
const imageExtensions = ['jpg', 'jpeg', 'png', 'gif', 'bmp', 'webp', 'svg']
return imageMimeTypes.includes(fileType) || imageExtensions.includes(fileExtension.toLowerCase())
}
export const validateVideo = (fileType: string, fileExtension: string): boolean => {
// 常见的视频 MIME 类型
const videoMimeTypes = [
'video/mp4', // MP4
'video/mpeg', // MPEG
'video/quicktime', // MOV
'video/x-msvideo', // AVI
'video/x-matroska', // MKV
'video/webm', // WebM
'video/3gpp', // 3GP
'video/3gpp2', // 3G2
'video/x-flv', // FLV
'video/mp2t', // TS (MPEG Transport Stream)
'application/x-mpegURL', // M3U8 (HLS)
'video/H264', // H264
'video/H265' // H265/HEVC
]
// 常见的视频文件扩展名
const videoExtensions = [
'mp4',
'mpeg',
'mpg',
'mov',
'avi',
'mkv',
'webm',
'3gp',
'3g2',
'flv',
'ts',
'm3u8',
'h264',
'h265',
'hevc'
]
return videoMimeTypes.includes(fileType) || videoExtensions.includes(fileExtension.toLowerCase())
}
```