【Spring Boot 18，「架构师必备

1、EduTeacherController

---

package com.atguigu.eduservice.controller;



import com.atguigu.commonutils.R;

import com.atguigu.eduservice.entity.EduTeacher;

import com.atguigu.eduservice.entity.vo.TeacherQuery;

import com.atguigu.eduservice.service.EduTeacherService;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;

import io.swagger.annotations.Api;

import io.swagger.annotations.ApiOperation;

import io.swagger.annotations.ApiParam;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.util.StringUtils;

import org.springframework.web.bind.annotation.*;

import java.util.List;



@Api(description="讲师管理")

@RestController

@RequestMapping("/eduservice/teacher")

@CrossOrigin

public class EduTeacherController {

    @Autowired

    private EduTeacherService teacherService;



    @ApiOperation(value = "所有讲师列表")

    @GetMapping("findAll")

    public R findAllTeacher(){

        List<EduTeacher> list = teacherService.list(null);

        return R.Ok().data("items",list);

    }



    @ApiOperation(value = "根据ID查询讲师")

    @GetMapping("findById{id}")

    public R findById(@ApiParam(name="id",value="讲师ID",required=true) @PathVariable String id){

        EduTeacher teacher = teacherService.getById(id);

        return R.Ok().data("items",teacher.getJson());

    }



    @ApiOperation(value = "根据ID删除讲师")

    //逻辑删除讲师的方法

    @DeleteMapping("{id}")

    public R removeTeacher(@ApiParam(name="id",value="讲师ID",required=true) @PathVariable String id){

        Boolean flag = teacherService.removeById(id);

        if(flag){

            return R.Ok();

        }else{

            return R.error();

        }

    }



    //分页

    @GetMapping("pageTeacher/{current}/{limit}")

    public R pageListTeacher(@PathVariable long current,@PathVariable long limit){

        //创建page对象

        Page<EduTeacher> pageTeacher = new Page<>(current,limit);

        //调用方法的时候，底层封装，把分页所有数据封装到pageTeacher中

        teacherService.page(pageTeacher,null);

        long total = pageTeacher.getTotal();

        List<EduTeacher> records = pageTeacher.getRecords();

        //Map map = new HashMap();

        //map.put("total",total);

        //map.put("rows",records);

        return R.Ok().data("total",total).data("rows",records);

    }



    @PostMapping("pageTeacherCondition/{current}/{limit}")

    public R pageTeacherCondition(@PathVariable long current,@PathVariable long limit,

                                  @RequestBody(required = false) TeacherQuery teacherQuery){

        //创建一个page对象

        Page<EduTeacher> pageTeacher = new Page<>(current,limit);

        QueryWrapper<EduTeacher> wrapper = new QueryWrapper<>();

        //多条件组合查询

        //动态SQL

        //判断条件值是否为空，不为空就拼接

        String name = teacherQuery.getName();

        Integer level = teacherQuery.getLevel();

        String begin = teacherQuery.getBegin();

        String end = teacherQuery.getEnd();

        if(!StringUtils.isEmpty(name)){

            wrapper.like("name",name);

        }

        if(!StringUtils.isEmpty(level)){

            wrapper.eq("level",level);

        }

        if(!StringUtils.isEmpty(begin)){

            wrapper.ge("gmt_create",begin);

        }

        if(!StringUtils.isEmpty(end)){

            wrapper.le("gmt_modified",end);

        }

        wrapper.orderByDesc("gmt_create");

        //wrapper.

        teacherService.page(pageTeacher,wrapper);

        long total = pageTeacher.getTotal();

        List<EduTeacher> records = pageTeacher.getRecords();

        return R.Ok().data("total",total).data("rows",records);

    }



    //添加讲师接口的方法

    @PostMapping("addTeacher")

    public R addTeacher(@RequestBody EduTeacher eduTeacher){

        boolean save = teacherService.save(eduTeacher);

        if(save){

            return R.Ok();

        }else {

            return R.error();

        }

    }



    @GetMapping("getTeacher/{id}")

    public R getTeacher(@PathVariable String id){

        EduTeacher byId = teacherService.getById(id);

        return R.Ok().data("teacher",byId);

    }



    @PostMapping("updateTeacher")

    public R updateTeacher(@RequestBody EduTeacher eduTeacher){

        boolean flag = teacherService.updateById(eduTeacher);

        if(flag){

            return R.Ok();

        }else {

            return R.error();

        }

    }

} 

2、前端讲师列表

<template>

    <div>

        <el-form label-width="120px">

            <el-form-item label="讲师名称">

                <el-input v-model="teacher.name"/>

            </el-form-item>

            <el-form-item label="讲师排序">

                <el-input-number v-model="teacher.sort" controls-position="right" min="0"/>

            </el-form-item>

            <el-form-item label="讲师头衔">

                <el-select v-model="teacher.level" clearable placeholder="请选择">

                <!--

                    数据类型一定要和取出的json中的一致，否则没法回填

                    因此，这里value使用动态绑定的值，保证其数据类型是number

                -->

                <el-option :value="1" label="高级讲师"/>

                <el-option :value="2" label="首席讲师"/>

                </el-select>

            </el-form-item>

            <el-form-item label="讲师资历">

                <el-input v-model="teacher.career"/>

            </el-form-item>

            <el-form-item label="讲师简介">

                <el-input v-model="teacher.intro" :rows="10" type="textarea"/>

            </el-form-item>



            <!-- 讲师头像：TODO -->

            <!-- 讲师头像 -->

            <el-form-item label="讲师头像">



                <!-- 头衔缩略图 -->

                <pan-thumb :image="teacher.avatar"/>

                <!-- 文件上传按钮 -->

                <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow=true">更换头像

                </el-button>



                <!--

                  v-show：是否显示上传组件

                  :key：类似于id，如果一个页面多个图片上传控件，可以做区分

                  :url：后台上传的url地址

                  @close：关闭上传组件

                  @crop-upload-success：上传成功后的回调 

                  <input type="file" name="file"/>

                -->

                <image-cropper

                              v-show="imagecropperShow"

                              :width="300"

                              :height="300"

                              :key="imagecropperKey"

                              :url="BASE_API+'/eduoss/fileoss'"

                              field="file"

                              @close="close"

                              @crop-upload-success="cropSuccess"/>

            </el-form-item>



            <el-form-item>

                <el-button :disabled="saveBtnDisabled" type="primary" @click="saveOrUpdate">保存</el-button>

            </el-form-item>

        </el-form>

    </div>

</template>

<script>

import teacherApi from '@/api/edu/teacher.js'

import ImageCropper from '@/components/ImageCropper'

import PanThumb from '@/components/PanThumb'

export default {

  data() {

    return {

      teacher: {

        name: '',

        sort: 0,

        level: 1,

        career: '',

        intro: '',

        avatar: ''

      },

      //上传弹框组件是否显示

      imagecropperShow:false,

      imagecropperKey:0,//上传组件key值

      BASE_API:process.env.BASE_API, //获取dev.env.js里面地址

      saveBtnDisabled:false  // 保存按钮是否禁用,

    }

  },

  created(){

    this.init()

  },

  watch: {  //监听

    $route(to, from) { //路由变化方式，路由发生变化，方法就会执行

      this.init()

    }

  },

  methods: {

    close() { //关闭上传弹框的方法

        this.imagecropperShow=false

        //上传组件初始化

        this.imagecropperKey = this.imagecropperKey+1

    },

    //上传成功方法

    cropSuccess(data) {

      this.imagecropperShow=false

      //上传之后接口返回图片地址

      this.teacher.avatar = data.url

      this.imagecropperKey = this.imagecropperKey+1

    },

    init() {

      //判断路径有id值,做修改

      if(this.$route.params && this.$route.params.id) {

          //从路径获取id值

          const id = this.$route.params.id

          //调用根据id查询的方法

          this.getInfo(id)

      } else { //路径没有id值，做添加

        //清空表单

        this.teacher = {}

      }

    },

    //根据讲师id查询的方法

    getInfo(id) {

      teacherApi.getTeacherInfo(id)

        .then(response => {

          this.teacher = response.data.teacher

        })

    },

    saveOrUpdate() {

      //根据teacher中是否有ID

      if(!this.teacher.id){

        this.saveTeacher();

      }else{

          this.updateTeacher();

      }

    },

    updateTeacher() {

      teacherApi.updateTeacherInfo(this.teacher)

      .then(response => {

            //提示信息

            this.$message({

                type: 'success',

                message: '修改成功!'

            });

            //回到列表页面，路由跳转

            this.$router.push({ path: '/teacher/table' })

      })

    },

    // 保存

    saveTeacher() {

        teacherApi.addTeacher(this.teacher)

        .then(response => {

            //提示信息

            this.$message({

                type: 'success',

                message: '添加成功!'

            });

            //回到列表页面，路由跳转

            this.$router.push({ path: '/teacher/table' })

        })

    }

  }

}

</script>

3、添加讲师页面

<template>

    <div class="app-container">

         <!--查询表单-->

        <el-form :inline="true" class="demo-form-inline">

            <el-form-item>

                <el-input v-model="teacherQuery.name" placeholder="讲师名"/>

            </el-form-item>



            <el-form-item>

                <el-select v-model="teacherQuery.level" clearable placeholder="讲师头衔">

                    <el-option :value="1" label="高级讲师"/>

                    <el-option :value="2" label="首席讲师"/>

                </el-select>

            </el-form-item>



            <el-form-item label="添加时间">

                <el-date-picker

                    v-model="teacherQuery.begin"

                    type="datetime"

                    placeholder="选择开始时间"

                    value-format="yyyy-MM-dd HH:mm:ss"

                    default-time="00:00:00"

                />

            </el-form-item>

            <el-form-item>

                <el-date-picker

                    v-model="teacherQuery.end"

                    type="datetime"

                    placeholder="选择截止时间"

                    value-format="yyyy-MM-dd HH:mm:ss"

                    default-time="00:00:00"

                />

            </el-form-item>

            

            <el-button type="primary" icon="el-icon-search" @click="getList()">查询</el-button>

            <el-button type="default" @click="resetData()">清空</el-button>

        </el-form>

        <!-- 表格 -->

        <el-table

            :data="list"

            border

            fit

            highlight-current-row>



            <el-table-column

                label="序号"

                width="70"

                align="center">

                <template slot-scope="scope">

                    {{ (page - 1) * limit + scope.$index + 1 }}

                </template>



### 最后

毕竟工作也这么久了 ，除了途虎一轮，也七七八八面试了不少大厂，像阿里、饿了么、美团、滴滴这些面试过程就不一一写在这篇文章上了。我会整理一份详细的面试过程及大家想知道的一些问题细节

### 美团面试经验
![美团面试](https://img-blog.csdnimg.cn/img_convert/120428b3297bdceb312b567878d65d5e.png)
字节面试经验
![字节面试](https://img-blog.csdnimg.cn/img_convert/0dc1f994d7c60586500c1b3e58f38e38.png)
菜鸟面试经验
![菜鸟面试](https://img-blog.csdnimg.cn/img_convert/1c48323a4391f12b5f2c4eb96390de0d.png)
蚂蚁金服面试经验
![蚂蚁金服](https://img-blog.csdnimg.cn/img_convert/e91964dd4ec9dc679a77da2d0da2bb0e.png)
唯品会面试经验
![唯品会](https://img-blog.csdnimg.cn/img_convert/8f24d4bf51040f428ec2f4763d1754a5.png)

>因篇幅有限，图文无法详细发出
>
>**[CodeChina开源项目：【一线大厂Java面试题解析+核心总结学习笔记+最新讲解视频】](https://codechina.youkuaiyun.com/m0_60958482/java-p7)**

          label="序号"

                width="70"

                align="center">

                <template slot-scope="scope">

                    {{ (page - 1) * limit + scope.$index + 1 }}

                </template>



### 最后

毕竟工作也这么久了 ，除了途虎一轮，也七七八八面试了不少大厂，像阿里、饿了么、美团、滴滴这些面试过程就不一一写在这篇文章上了。我会整理一份详细的面试过程及大家想知道的一些问题细节

### 美团面试经验
[外链图片转存中...(img-UcQz0bhp-1630924824580)]
字节面试经验
[外链图片转存中...(img-cU7CNd2E-1630924824581)]
菜鸟面试经验
[外链图片转存中...(img-kr3GZUM9-1630924824583)]
蚂蚁金服面试经验
[外链图片转存中...(img-yscxcUbM-1630924824584)]
唯品会面试经验
[外链图片转存中...(img-jlvEgFD0-1630924824585)]

>因篇幅有限，图文无法详细发出
>
>**[CodeChina开源项目：【一线大厂Java面试题解析+核心总结学习笔记+最新讲解视频】](https://codechina.youkuaiyun.com/m0_60958482/java-p7)**