由于装饰器只是普通的函数，你可以简单地创建一个返回被调用的装饰器的函数：

• decorators.ts*

import { Body, Param, ParseIntPipe, ValidationPipe } from '@nestjs/common';

export const Bind = () => Body(
  new ValidationPipe({transform: true}),
);

export const Id = () => Param('id', new ParseIntPipe());

然后将它们用作装饰器：

import { Id, Bind } from './decorators';

// ... 

@Post(":id")
public create(@Id() id: number, @Bind() myData: MyClass) {
    // ... 
}

请将此代码用于带有验证请求的自定义nestjs主体装饰器

export const RBody = createParamDecorator(
  async (value: any, ctx: ExecutionContext) => {
    // extract headers
    const reqBody = ctx.switchToHttp().getRequest().body;
    // Convert headers to DTO object
    const dto = plainToInstance(value, reqBody);
    return await validateOrReject(dto).then(
      (res) => {
        console.log(`Header validated successfully..${res}`);
        return dto;
      },
      (err) => {
        if (err.length > 0) {
          //Get the errors and push to custom array
          const validationErrors = err.map((obj, key) =>
            Object.values(obj.constraints)
          );
          throwException(validationErrors);
        }
      },
    );
    return dto;
  },
);