Controller Request (获取前端传过来的参数)
nestjs 提供了方法参数装饰器 用来帮助我们快速获取参数 如下
@Request() | req |
@Response() | res |
@Next() | next |
@Session() | req.session |
@Param(key?: string) | req.params /req.params[key] |
@Body(key?: string) | req.body /req.body[key] |
@Query(key?: string) | req.query /req.query[key] |
@Headers(name?: string) | req.headers /req.headers[name] |
@HttpCode |
调试工具可以使用postMan ApiFox 等
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1.获取get请求传参
可以使用Request装饰器 或者 Query 装饰器 跟express 完全一样
也可以使用Query 直接获取 不需要在通过req.query 了
import { Controller, Get, Post, Body, Patch, Param, Delete, Version, Request, Query } from '@nestjs/common'; import { UserService } from './user.service'; import { CreateUserDto } from './dto/create-user.dto'; import { UpdateUserDto } from './dto/update-user.dto'; @Controller('user') export class UserController { constructor(private readonly userService: UserService) { } @Get() find(@Query() query) { console.log(query) return { code: 200 } } }
2.post 获取参数
可以使用Request装饰器 或者 Body 装饰器 跟express 完全一样
或者直接使用Body 装饰器
也可以直接读取key
import { Controller, Get, Post, Body, Patch, Param, Delete, Version, Request, Query } from '@nestjs/common'; import { UserService } from './user.service'; import { CreateUserDto } from './dto/create-user.dto'; import { UpdateUserDto } from './dto/update-user.dto'; @Controller('user') export class UserController { constructor(private readonly userService: UserService) { } @Get() find(@Query() query) { console.log(query) return { code: 200 } } @Post() create (@Body() body) { console.log(body) return { code:200 } } }
3.动态路由
可以使用Request装饰器 或者 Param 装饰器 跟express 完全一样
import { Controller, Get, Post, Body, Patch, Param, Delete, Version, Request, Query } from '@nestjs/common'; import { UserService } from './user.service'; import { CreateUserDto } from './dto/create-user.dto'; import { UpdateUserDto } from './dto/update-user.dto'; @Controller('user') export class UserController { constructor(private readonly userService: UserService) { } @Get() find(@Query() query) { console.log(query) return { code: 200 } } @Post() create (@Body('name') body) { console.log(body) return { code:200 } } @Get(':id') findId (@Param() param) { console.log(param) return { code:200 } } }
4.读取header 信息
我在调试工具随便加了一个cookie
import { Controller, Get, Post, Body, Patch, Param, Delete, Version, Request, Query, Ip, Header, Headers } from '@nestjs/common'; import { UserService } from './user.service'; import { CreateUserDto } from './dto/create-user.dto'; import { UpdateUserDto } from './dto/update-user.dto'; @Controller('user') export class UserController { constructor(private readonly userService: UserService) { } @Get() find(@Query() query) { console.log(query) return { code: 200 } } @Post() create (@Body('name') body) { console.log(body) return { code:200 } } @Get(':id') findId (@Headers() header) { console.log(header) return { code:200 } } }
5.状态码
使用 HttpCode 装饰器 控制接口返回的状态码
import { Controller, Get, Post, Body, Patch, Param, Delete, Version, Request, Query, Ip, Header, Headers, HttpCode } from '@nestjs/common'; import { UserService } from './user.service'; import { CreateUserDto } from './dto/create-user.dto'; import { UpdateUserDto } from './dto/update-user.dto'; @Controller('user') export class UserController { constructor(private readonly userService: UserService) { } @Get() find(@Query() query) { console.log(query) return { code: 200 } } @Post() create (@Body('name') body) { console.log(body) return { code:200 } } @Get(':id') @HttpCode(500) findId (@Headers() header) { return { code:500 } } }