95 lines
2.8 KiB
TypeScript
95 lines
2.8 KiB
TypeScript
import { NestFactory } from '@nestjs/core';
|
|
import { ExpressAdapter } from '@nestjs/platform-express';
|
|
import { ValidationPipe } from '@nestjs/common';
|
|
import { DocumentBuilder, SwaggerModule } from '@nestjs/swagger';
|
|
import express from 'express';
|
|
import bodyParser from 'body-parser';
|
|
|
|
// 缓存 app 实例，避免每次冷启动都重新创建
|
|
let cachedApp: any;
|
|
|
|
async function bootstrap() {
|
|
if (!cachedApp) {
|
|
const expressApp = express();
|
|
|
|
// 使用 require 动态加载编译后的模块（避免 TypeScript 编译时检查）
|
|
const { AppModule } = require('../dist/src/app.module');
|
|
|
|
const app = await NestFactory.create(
|
|
AppModule,
|
|
new ExpressAdapter(expressApp),
|
|
{ logger: ['error', 'warn', 'log'] }
|
|
);
|
|
|
|
// 配置 CORS
|
|
app.enableCors({
|
|
origin: true, // 允许所有来源
|
|
credentials: true,
|
|
methods: ['GET', 'POST', 'PUT', 'DELETE', 'PATCH', 'OPTIONS'],
|
|
allowedHeaders: [
|
|
'Content-Type',
|
|
'Authorization',
|
|
'Accept',
|
|
'Origin',
|
|
'Referer',
|
|
'User-Agent',
|
|
],
|
|
});
|
|
|
|
// 尝试加载全局过滤器和拦截器
|
|
try {
|
|
const { HttpExceptionFilter } = require('../dist/src/common/filters/http-exception.filter');
|
|
const { TransformInterceptor } = require('../dist/src/common/interceptors/transform.interceptor');
|
|
app.useGlobalFilters(new HttpExceptionFilter());
|
|
app.useGlobalInterceptors(new TransformInterceptor());
|
|
} catch (error) {
|
|
console.log('Global filters/interceptors not loaded:', error.message);
|
|
}
|
|
|
|
// 全局验证管道
|
|
app.useGlobalPipes(
|
|
new ValidationPipe({
|
|
whitelist: true,
|
|
forbidNonWhitelisted: true,
|
|
transform: true,
|
|
}),
|
|
);
|
|
|
|
// Body parser 配置
|
|
app.use(bodyParser.json({ limit: '50mb' }));
|
|
app.use(bodyParser.urlencoded({ limit: '50mb', extended: true }));
|
|
|
|
// Swagger 文档
|
|
const config = new DocumentBuilder()
|
|
.setTitle('API 文档')
|
|
.setDescription('这是我的应用程序的 API 文档')
|
|
.setVersion('1.0')
|
|
.addBearerAuth()
|
|
.build();
|
|
const document = SwaggerModule.createDocument(app, config);
|
|
SwaggerModule.setup('api', app, document);
|
|
|
|
await app.init();
|
|
cachedApp = expressApp;
|
|
|
|
console.log('NestJS app initialized successfully');
|
|
}
|
|
return cachedApp;
|
|
}
|
|
|
|
// Vercel Serverless handler
|
|
export default async function handler(req: any, res: any) {
|
|
try {
|
|
console.log(`Request: ${req.method} ${req.url}`);
|
|
const app = await bootstrap();
|
|
app(req, res);
|
|
} catch (error) {
|
|
console.error('Handler error:', error);
|
|
res.status(500).json({
|
|
error: 'Internal Server Error',
|
|
message: error.message,
|
|
stack: process.env.NODE_ENV === 'development' ? error.stack : undefined
|
|
});
|
|
}
|
|
}
|