NestJS代理/admin请求至Prisma Studio时API请求404问题求助

数据老陈

2026-7-6

解决方案

问题根源是Prisma Studio前端硬编码了/api作为API请求路径，当通过/admin路径访问Studio时，这些/api请求不会经过你配置的/admin代理中间件，导致404。只需调整代理规则，让/api请求也转发到Prisma Studio服务即可解决。

修改代理配置与路由匹配

1. 更新`proxy.middleware.ts`

调整代理逻辑，同时处理/admin和/api路径的请求，按需重写路径：

// proxy.middleware.ts
import { Injectable, NestMiddleware } from '@nestjs/common';
import { Request, Response } from 'express';
import { createProxyMiddleware } from 'http-proxy-middleware';

@Injectable()
export class ProxyMiddleware implements NestMiddleware {
  private readonly proxy = createProxyMiddleware({
    target: 'http://localhost:5555',
    changeOrigin: true,
    pathRewrite: (path) => {
      // 对/admin开头的路径，移除前缀后转发到Prisma Studio
      if (path.startsWith('/admin')) {
        return path.replace(/^\/admin/, '');
      }
      // /api路径直接转发，无需修改
      return path;
    },
  });

  use(req: Request, res: Response, next: () => void) {
    this.proxy(req, res, next);
  }
}

2. 更新`app.module.ts`

让代理中间件同时匹配/admin和/api路由：

// app.module.ts
import { Module, NestModule, MiddlewareConsumer } from '@nestjs/common';
import { ProxyMiddleware } from './proxy.middleware';

@Module({})
export class AppModule implements NestModule {
  configure(consumer: MiddlewareConsumer) {
    consumer.apply(ProxyMiddleware).forRoutes('admin', 'api');
  }
}