前言

本文是客户端开发的下一节，欢迎掘友和小雨一起敲代码，下面是配置服务端的实战。

2.服务端

安装nest

npm i -g @nestjs/cli

以管理员身份运行powerShell(一定要以管路员身份打开)

set-ExecutionPolicy RemoteSigned

创建nest项目，在node文件夹打开命令行输入下面命令,选择npm

nest new nest-login

修改src/main.ts

import { NestFactory } from '@nestjs/core';
import { AppModule } from './app.module';

async function bootstrap() {
  const app = await NestFactory.create(AppModule);
  await app.listen(3001);//不要与前端运行端口一致
}
bootstrap();

运行项目

npm run start:dev

建立src/models/result.model.ts,用于统一返回数据

export class ResultModel<T>{
    data:T
    code:number
    msg:string
    constructor(code:number,data:T,msg:string){
        this.code=code
        this.data=data
        this.msg=msg
    }
}

建立src/controller/user.controller.ts，用于业务处理

import { Controller, Get, Query } from '@nestjs/common'
import { ResultModel } from 'src/models/result.model';
import { UserService } from '../service/user.service'

@Controller('/user')
export class UserController {
    constructor(private readonly userService: UserService) { }
    @Get("/login")
    login(@Query('username') username:string,@Query('password') password:string):ResultModel<object> {
        return this.userService.login(username,password);
    }
}

建立src/service/user.service.ts，用于处理业务

import {Injectable} from '@nestjs/common'
import { ResultModel } from 'src/models/result.model';

@Injectable()
export class UserService{
    login(username:string,password:string):ResultModel<object>{
        let obj = {
            username:'admin',
            password:'123',
            name:'admin'
        }
        if(obj.username == username && obj.password == password){
            return new ResultModel(
                200,
                {userInfo:obj,
                token:"abc"
                },
                '登录成功')
        }else{
            return new ResultModel(500,null,'账号或密码错误')
        }
    }
}

建立src/module/user.module.ts，用于处理业务和服务

import { Module } from "@nestjs/common";
import { UserController } from "src/controller/user.controller";
import { UserService } from "src/service/user.service";

@Module({
    imports:[],
    controllers:[UserController],
    providers:[UserService],
})
export class UserModule{}

配置src/app.modul.ts

import { Module } from '@nestjs/common';
import { UserModule } from './moudle/user.module';

@Module({
  imports: [UserModule],
})
export class AppModule {}

配置src/main.ts

import { NestFactory } from '@nestjs/core';
import { AppModule } from './app.module';

async function bootstrap() {
  const app = await NestFactory.create(AppModule);
  app.setGlobalPrefix('/api');//配置公共访问路径
  await app.listen(8080);//与前端listen的端口一致
}
bootstrap();