如何在nest.js中使用异常过滤器

import { ExceptionFilter, Catch, ArgumentsHost } from '@nestjs/common';
import { HttpException } from '@nestjs/common';

@Catch(HttpException)
export class CustomExceptionFilter implements ExceptionFilter {
  catch(exception: HttpException, host: ArgumentsHost) {
    // 处理异常的逻辑
  }
}

import { ExceptionFilter, Catch, ArgumentsHost } from '@nestjs/common';
import { HttpException } from '@nestjs/common';

@Catch(HttpException)
export class CustomExceptionFilter implements ExceptionFilter {
  catch(exception: HttpException, host: ArgumentsHost) {
    const ctx = host.switchToHttp();
    const response = ctx.getResponse();
    const status = exception.getStatus();

    response.status(status).json({
      statusCode: status,
      message: '自定义错误消息',
    });
  }
}

import { Controller, Get, UseFilters } from '@nestjs/common';
import { CustomExceptionFilter } from './custom-exception.filter';

@Controller('example')
@UseFilters(CustomExceptionFilter)
export class ExampleController {
  @Get()
  async example() {
    // 处理业务逻辑
  }
}