请问midway2使用graphql有没有实例可以参考？

[exment]

midway2使用graphql总是不成功。

[exment]

import * as path from 'path';
import { Context, async, Middleware } from '@ali/midway';
import { ApolloServer, ServerRegistration } from 'apollo-server-koa';
import { buildSchemaSync } from 'type-graphql';

export default (options: ServerRegistration, ctx: Context) => {
  const server = new ApolloServer({
    schema: buildSchemaSync({
      resolvers: [path.resolve(ctx.baseDir, 'resolver/*.ts')],
      container: ctx.applicationContext
    })
  });
  return server.getMiddleware(options);
};

midway1原来的graphql中间件可以这样写

[czy88840616]

没有本质差异，但是 egg 的函数式中间件得写到 src/app/middleware 下。https://www.yuque.com/midwayjs/midway_v2/eggjs#ML31g

[exment]

请问如果在src/middleware下如何实现？

[czy88840616]

那要写成 class，一样的，本质是 server.getMiddleware 返回了一个中间件。

@Provide()
export class ReportMiddleware implements IWebMiddleware {

  @Inject()
  baseDir: string;

  @App()
  app;

  resolve() {
    const server = new ApolloServer({
      schema: buildSchemaSync({
        resolvers: [path.resolve(this.baseDir, 'resolver/*.ts')],
        container: app.getApplicationContext()
      })
    });
    return server.getMiddleware(options);
  }

}

[exment]

非常感谢!