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支持解析BASE64文件数据

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This commit is contained in:
Vinlic 2024-03-11 13:35:50 +08:00
parent e193e905f3
commit 84353391cd
5 changed files with 34 additions and 18 deletions
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4
README.md
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@ -53,6 +53,8 @@ Authorization: Bearer [refresh_token]
### 文件上传解读 ### 文件上传解读
提供一个可访问的文件URL或者BASE64_URL进行解析。
请求数据： 请求数据：
```json ```json
{ {
@ -105,6 +107,8 @@ Authorization: Bearer [refresh_token]
### 图像解析 ### 图像解析
提供一个可访问的图像URL或者BASE64_URL进行解析。
此格式兼容 [gpt-4-vision-preview](https://platform.openai.com/docs/guides/vision) API格式，您也可以用这个格式传送文档进行解析。 此格式兼容 [gpt-4-vision-preview](https://platform.openai.com/docs/guides/vision) API格式，您也可以用这个格式传送文档进行解析。
请求数据： 请求数据：

2
package.json
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@ -1,6 +1,6 @@
{ {
"name": "kimi-free-api", "name": "kimi-free-api",
"version": "0.0.7", "version": "0.0.8",
"description": "Kimi Free API Server", "description": "Kimi Free API Server",
"type": "module", "type": "module",
"main": "dist/index.js", "main": "dist/index.js",

32
src/api/controllers/chat.ts
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@ -298,6 +298,8 @@ async function preSignUrl(filename: string, refreshToken: string) {
* @param fileUrl 文件URL * @param fileUrl 文件URL
*/ */
async function checkFileUrl(fileUrl: string) { async function checkFileUrl(fileUrl: string) {
if(util.isBASE64Data(fileUrl))
return;
const result = await axios.head(fileUrl, { const result = await axios.head(fileUrl, {
timeout: 15000, timeout: 15000,
validateStatus: () => true validateStatus: () => true
@ -322,24 +324,34 @@ async function uploadFile(fileUrl: string, refreshToken: string) {
// 预检查远程文件URL可用性 // 预检查远程文件URL可用性
await checkFileUrl(fileUrl); await checkFileUrl(fileUrl);
let filename, fileData, mimeType;
// 如果是BASE64数据则直接转换为Buffer
if(util.isBASE64Data(fileUrl)) {
mimeType = util.extractBASE64DataFormat(fileUrl);
const ext = mime.getExtension(mimeType);
filename = `${util.uuid()}.${ext}`;
fileData = Buffer.from(util.removeBASE64DataHeader(fileUrl), 'base64');
}
// 下载文件到内存，如果您的服务器内存很小，建议考虑改造为流直传到下一个接口上，避免停留占用内存 // 下载文件到内存，如果您的服务器内存很小，建议考虑改造为流直传到下一个接口上，避免停留占用内存
const filename = path.basename(fileUrl); else {
const { data: fileData } = await axios.get(fileUrl, { filename = path.basename(fileUrl);
responseType: 'arraybuffer', ({ data: fileData } = await axios.get(fileUrl, {
// 100M限制 responseType: 'arraybuffer',
maxContentLength: FILE_MAX_SIZE, // 100M限制
// 60秒超时 maxContentLength: FILE_MAX_SIZE,
timeout: 60000 // 60秒超时
}); timeout: 60000
}));
}
// 获取预签名文件URL // 获取预签名文件URL
const { const {
url: uploadUrl, url: uploadUrl,
object_name: objectName object_name: objectName
} = await preSignUrl(filename, refreshToken); } = await preSignUrl(filename, refreshToken);
// 获取文件的MIME类型 // 获取文件的MIME类型
const mimeType = mime.getType(filename); mimeType = mimeType || mime.getType(filename);
// 上传文件到目标OSS // 上传文件到目标OSS
const token = await acquireToken(refreshToken); const token = await acquireToken(refreshToken);
let result = await axios.request({ let result = await axios.request({

2
src/index.ts
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@ -23,7 +23,7 @@ const startupTime = performance.now();
await server.listen(); await server.listen();
config.service.bindAddress && config.service.bindAddress &&
logger.success("service bind address:", config.service.bindAddress); logger.success("Service bind address:", config.service.bindAddress);
})() })()
.then(() => .then(() =>
logger.success( logger.success(

12
src/lib/util.ts
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@ -136,18 +136,18 @@ const util = {
return !_.isUndefined(value) && /^[a-zA-Z0-9\/\+]+(=?)+$/.test(value); return !_.isUndefined(value) && /^[a-zA-Z0-9\/\+]+(=?)+$/.test(value);
}, },
isBASE64Image(value) { isBASE64Data(value) {
return /^data:image/.test(value); return /^data:/.test(value);
}, },
extractBASE64ImageFormat(value): string | null { extractBASE64DataFormat(value): string | null {
const match = value.trim().match(/^data:image\/(.+);base64,/); const match = value.trim().match(/^data:(.+);base64,/);
if(!match) return null; if(!match) return null;
return match[1]; return match[1];
}, },
removeBASE64ImageHeader(value): string { removeBASE64DataHeader(value): string {
return value.replace(/^data:image\/(.+);base64,/, ""); return value.replace(/^data:(.+);base64,/, "");
}, },
isDataString(value): boolean { isDataString(value): boolean {