Elemen ui&表单 、CRUD、安装

ElementUI表单

Form表单，每一个表单域是由一个form-item组件构成的，表单域中可以放置各种类型的表单控键，有input、switch、checkbox

表单的绑定form

内容分别是form内的对象

<template>
    <div>
        <el-form ref="form" :model="form" label-width="80px">
            <el-form-item label="活动名称">
                <el-input v-model="form.name"></el-input>
            </el-form-item>
            <el-form-item label="活动区域">
                <el-select v-model="form.region" placeholder="请选择活动区域">
                    <el-option label="区域一" value="shanghai"></el-option>
                    <el-option label="区域二" value="beijing"></el-option>
                </el-select>
            </el-form-item>
            <el-form-item label="活动时间">
                <el-col :span="11">
                    <el-date-picker type="date" placeholder="选择日期" v-model="form.date1" style="width: 100%;"></el-date-picker>
                </el-col>
                <el-col class="line" :span="2">-</el-col>
                <el-col :span="11">
                    <el-time-picker placeholder="选择时间" v-model="form.date2" style="width: 100%;"></el-time-picker>
                </el-col>
            </el-form-item>
            <el-form-item label="即时配送">
                <el-switch v-model="form.delivery"></el-switch>
            </el-form-item>
            <el-form-item label="活动性质">
                <el-checkbox-group v-model="form.type">
                    <el-checkbox label="美食/餐厅线上活动" name="type"></el-checkbox>
                    <el-checkbox label="地推活动" name="type"></el-checkbox>
                    <el-checkbox label="线下主题活动" name="type"></el-checkbox>
                    <el-checkbox label="单纯品牌曝光" name="type"></el-checkbox>
                </el-checkbox-group>
            </el-form-item>
            <el-form-item label="特殊资源">
                <el-radio-group v-model="form.resource">
                    <el-radio label="线上品牌商赞助"></el-radio>
                    <el-radio label="线下场地免费"></el-radio>
                </el-radio-group>
            </el-form-item>
            <el-form-item label="活动形式">
                <el-input type="textarea" v-model="form.desc"></el-input>
            </el-form-item>
            <el-form-item>
                <el-button type="primary" @click="onSubmit">立即创建</el-button>
                <el-button>取消</el-button>
            </el-form-item>
        </el-form>
    </div>
</template>

<script>
    export default {
        data() {
            return {
                form: {
                    name: '',
                    region: '',
                    date1: '',
                    date2: '',
                    delivery: false,
                    type: [],
                    resource: '',
                    desc: ''
                }
            }
        },
        methods: {
            onSubmit() {
                console.log('submit!');
            }
        }
    }
</script>

<style scoped>

</style>

表单的数据校验：

表单要绑定rules

内容在绑定rules里面的内容

<el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="100px" class="demo-ruleForm">
  <el-form-item label="活动名称" prop="name">
    <el-input v-model="ruleForm.name"></el-input>
  </el-form-item>
  <el-form-item label="活动区域" prop="region">
    <el-select v-model="ruleForm.region" placeholder="请选择活动区域">
      <el-option label="区域一" value="shanghai"></el-option>
      <el-option label="区域二" value="beijing"></el-option>
    </el-select>
  </el-form-item>
  <el-form-item label="活动时间" required>
    <el-col :span="11">
      <el-form-item prop="date1">
        <el-date-picker type="date" placeholder="选择日期" v-model="ruleForm.date1" style="width: 100%;"></el-date-picker>
      </el-form-item>
    </el-col>
    <el-col class="line" :span="2">-</el-col>
    <el-col :span="11">
      <el-form-item prop="date2">
        <el-time-picker placeholder="选择时间" v-model="ruleForm.date2" style="width: 100%;"></el-time-picker>
      </el-form-item>
    </el-col>
  </el-form-item>
  <el-form-item label="即时配送" prop="delivery">
    <el-switch v-model="ruleForm.delivery"></el-switch>
  </el-form-item>
  <el-form-item label="活动性质" prop="type">
    <el-checkbox-group v-model="ruleForm.type">
      <el-checkbox label="美食/餐厅线上活动" name="type"></el-checkbox>
      <el-checkbox label="地推活动" name="type"></el-checkbox>
      <el-checkbox label="线下主题活动" name="type"></el-checkbox>
      <el-checkbox label="单纯品牌曝光" name="type"></el-checkbox>
    </el-checkbox-group>
  </el-form-item>
  <el-form-item label="特殊资源" prop="resource">
    <el-radio-group v-model="ruleForm.resource">
      <el-radio label="线上品牌商赞助"></el-radio>
      <el-radio label="线下场地免费"></el-radio>
    </el-radio-group>
  </el-form-item>
  <el-form-item label="活动形式" prop="desc">
    <el-input type="textarea" v-model="ruleForm.desc"></el-input>
  </el-form-item>
  <el-form-item>
    <el-button type="primary" @click="submitForm('ruleForm')">立即创建</el-button>
    <el-button @click="resetForm('ruleForm')">重置</el-button>
  </el-form-item>
</el-form>
<script>
  export default {
    data() {
      return {
        ruleForm: {
          name: '',
          region: '',
          date1: '',
          date2: '',
          delivery: false,
          type: [],
          resource: '',
          desc: ''
        },
        rules: {
          name: [
            { required: true, message: '请输入活动名称', trigger: 'blur' },
            { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
          ],
          region: [
            { required: true, message: '请选择活动区域', trigger: 'change' }
          ],
          date1: [
            { type: 'date', required: true, message: '请选择日期', trigger: 'change' }
          ],
          date2: [
            { type: 'date', required: true, message: '请选择时间', trigger: 'change' }
          ],
          type: [
            { type: 'array', required: true, message: '请至少选择一个活动性质', trigger: 'change' }
          ],
          resource: [
            { required: true, message: '请选择活动资源', trigger: 'change' }
          ],
          desc: [
            { required: true, message: '请填写活动形式', trigger: 'blur' }
          ]
        }
      };
    },
    methods: {
      submitForm(formName) {
        this.$refs[formName].validate((valid) => {
          if (valid) {
            alert('submit!');
          } else {
            console.log('error submit!!');
            return false;
          }
        });
      },
      resetForm(formName) {
        this.$refs[formName].resetFields();
      }
    }
  }
</script>

自定义数据校验

---

案例

CRUD

后端的代码：

1.数据库建表

2.pom.xml添加mybatisplus的相关依赖

<!--        mybatisPlus-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.3.2</version>
        </dependency>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-generator</artifactId>
            <version>3.3.2</version>
        </dependency>
        <dependency>
            <groupId>org.apache.velocity</groupId>
            <artifactId>velocity</artifactId>
            <version>1.7</version>
        </dependency>

代码生成器

3.通过mybatis plus generator自动生成后端代码

package com.southwind.springboot;

import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.config.DataSourceConfig;
import com.baomidou.mybatisplus.generator.config.GlobalConfig;
import com.baomidou.mybatisplus.generator.config.PackageConfig;
import com.baomidou.mybatisplus.generator.config.StrategyConfig;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;

public class Main {
    public static void main(String[] args) {
        //创建对象
        AutoGenerator autoGenerator = new AutoGenerator();
        //数据源
        DataSourceConfig dataSourceConfig= new DataSourceConfig();
        dataSourceConfig.setDbType(DbType.MYSQL);
        dataSourceConfig.setDriverName("com.mysql.jdbc.Driver");
        dataSourceConfig.setUrl("jdbc:mysql://localhost:3306/text?serverTimezone=UTC&useUnicode=true&characterEncoding=utf8");
        dataSourceConfig.setUsername("root");
        dataSourceConfig.setPassword("123456");
        autoGenerator.setDataSource(dataSourceConfig);
        //全局配置
        GlobalConfig globalConfig=new GlobalConfig();
        globalConfig.setOutputDir(System.getProperty("user.dir")+"/src/main/java");
        globalConfig.setAuthor("张三");
        globalConfig.setOpen(false);
        //去掉Service
        globalConfig.setServiceName("%sService");
        autoGenerator.setGlobalConfig(globalConfig);
        //包配置
        PackageConfig packageConfig =new PackageConfig();
        packageConfig.setParent("com.southwind");
        packageConfig.setEntity("entity");
        packageConfig.setMapper("mapper");
        packageConfig.setService("service");
        packageConfig.setServiceImpl("service.impl");
        packageConfig.setController("controller");
        //策略配置
        StrategyConfig strategyConfig =new StrategyConfig();
        strategyConfig.setInclude("peopel");
        strategyConfig.setNaming(NamingStrategy.underline_to_camel);
        strategyConfig.setColumnNaming(NamingStrategy.underline_to_camel);
        strategyConfig.setEntityLombokModel(true);
        autoGenerator.setStrategy(strategyConfig);
        //启动
        autoGenerator.execute();

    }
}

4.Controller中添加其他方法

package com.baomidou.controller;

import com.baomidou.entity.People;
import com.baomidou.service.PeopleService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import org.springframework.stereotype.Controller;

import java.util.List;

/**
 * <p>
 *  前端控制器
 * </p>
 *
 * @author 张三
 * @since 2022-04-28
 */
@RestController
@RequestMapping("/people")
public class PeopleController {
    @Autowired
    private PeopleService peopleService;
    @GetMapping("/list")
    public List<People> list(){
        return this.peopleService.list();
    }
    @GetMapping("/findbyid/{id}")
    public People findById(@RequestParam("id") Integer id){
        return this.peopleService.getById(id);
    }
    @DeleteMapping("/delete/{id}")
    public boolean delete(@RequestParam("id")Integer id){
        return this.peopleService.removeById(id);
    }
    @PostMapping("/add/")
    public boolean add(@RequestBody People people){
        return this.peopleService.save(people);
    }
    @PutMapping("/update")
    public boolean update(@RequestBody People people){
        return this.peopleService.updateById(people);

    }

}

配置文件：

server:
  port: 8080
  servlet:
    context-path: /
    session:
      cookie:
        max-age: 100
      timeout: 100
  tomcat:
    uri-encoding: utf-8
spring:
  datasource:
    url:  jdbc:mysql://localhost:3306/text?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: root
    password: 123456
mybatis-plus:
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
    type-aliases-package: com.baomidou.entity

前段的代码

1.安装axios插件

输入axios然后安装成功

解决跨域

控制类加：

@CrossOrigin
@RestController
@RequestMapping("/people")

---

flex布局

弹性布局

display：flex

控制下级盒子的位置

1. flex-direction:column
2. justify-context:center
3. align-items:flex-end、center

也能自己控制自己

align-self:flex-end

放到开头：

一般小白：justify-self:flex-start

但是实际是用边距实现：margin：auto

4.flex:1 会占满下局的全部位置

移动端

1.配置vue的环境

2.安装vant ui

cnpm  i  vant -S

3.安装less

cnpm install less less-loader --save