SpringBoot+Vue3实现数据可视化大屏

标签：SpringBoot color Vue3 value height collect rem 大屏 255

前端工程的地址:UserManagerFront: 数据可视化前端 (gitee.com)

效果展示，可以展现出来了，样式可能还有一些丑。

后端代码

后端主要是拿到数据并对数据进行处理，按照前端需要的格式进行返回即可。

import com.njitzx.entity.Student;
import com.njitzx.entity.vo.*;
import com.njitzx.mapper.StudentMapper;
import com.njitzx.mapper.TeacherMapper;
import com.njitzx.serivce.StudentService;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
  
import java.util.Map.Entry;
import java.util.stream.Collectors;
import java.util.LinkedHashMap;
@Service
@RequiredArgsConstructor
public class StudentServiceImpl implements StudentService {

    private final StudentMapper studentMapper;

    private final TeacherMapper teacherMapper;

    @Override
    public CollegeVO getCollege() {
        List<Student> students = studentMapper.getAll();

        // 分组并计算每个学院的学生数量
        Map<String, Long> collect = students.stream() //收集成map集合
                .collect(Collectors.groupingBy(Student::getCollege, Collectors.counting()));

        // 根据值进行排序（降序），然后将结果收集到一个新的LinkedHashMap中
        Map<String, Long> sortedCollect = collect.entrySet().stream()
                .sorted(Entry.<String, Long>comparingByValue().reversed())
                .collect(Collectors.toMap(
                        Entry::getKey,
                        Entry::getValue,
                        (e1, e2) -> e1,
                        LinkedHashMap::new
                ));

        // 将排序后的键和值拼接成字符串
        String college = String.join(",", sortedCollect.keySet());
      
        String countList = sortedCollect.values().stream()
                .map(String::valueOf)
                .collect(Collectors.joining(","));

        return CollegeVO.builder().nameList(college).numberList(countList).build();
    }

    @Override
    public List<GenderVO> getSex() {
        List<Student> students = studentMapper.getAll();
        Map<String, Long> collect = students.stream()
                .collect(Collectors.groupingBy(Student::getGender, Collectors.counting()));

        List<GenderVO> genderVOList = collect.entrySet().stream()
                .map(entry -> {
                    GenderVO vo = new GenderVO();
                    vo.setName(entry.getKey());
                    vo.setValue(entry.getValue());
                    return vo;
                })
                .collect(Collectors.toList());
        return  genderVOList;
    }

    @Override
    public List<ProvinceVO> getProvince() {
        List<Student> students = studentMapper.getAll();
        Map<String, Long> collect = students.stream()
                .collect(Collectors.groupingBy(Student::getProvinces, Collectors.counting()));
        List<ProvinceVO> genderVOList = collect.entrySet().stream()
                .map(entry -> {
                    ProvinceVO vo = new ProvinceVO();
                    vo.setName(entry.getKey());
                    vo.setValue(entry.getValue());
                    return vo;
                })
                .collect(Collectors.toList());

        return  genderVOList;
    }
    @Override
    public NumberVO getnumbwer() {
        Long l = studentMapper.selectCount();
        Long r = teacherMapper.selectCount();
        return  NumberVO.builder().numberStudent(l).numberTeacher(r).build();
    }

    @Override
    public HobbyVO getHobby() {
        List<Student> students = studentMapper.getAll();

        // 分组并计算每个学院的学生数量
        Map<String, Long> collect = students.stream()
                .collect(Collectors.groupingBy(Student::getHobby, Collectors.counting()));

        // 将排序后的键和值拼接成字符串
        String name = String.join(",", collect.keySet());
        String count = collect.values().stream()
                .map(String::valueOf)
                .collect(Collectors.joining(","));

        return HobbyVO.builder().name(name).count(count).build();
    }
}

前端

主要是学习前端如何编写的。

vue3编写echarts代码

1.创建一个盒子<div class="panel bar" ref="chart1"> //通过ref 拿到这个盒子
2 导入echarts import * as echarts from 'echarts';

3const chart1 = ref(null);  创建dom对象

4.创建option配置

5 初始化  let instance = echarts.init(chart1.value);
  
6挂载配置到instance上面 instance.setOption(chartOptions);

  也可以通过document来获取对象，进行初始化和挂载。
    let initMap = echarts.init(document.querySelector('#hobbyRef'))
    initMap.setOption(option)

柱状图的配置

```javascript const chartOptions = { //设置距离边框的样式 grid: { left: '0%', right: '0%', top: "20%", bottom: '4%', containLabel: true }, // 设置标题 title: { // 标题 text: '学院人数排名前五', //居中位置 left: 'center', //设置标题的样式 textStyle: { color: '#2f89cf', // 设置标题颜色为红色 fontSize: 18, // 设置字体大小 fontWeight: 'bold' // 设置字体粗细 } }, color: ['#2f89cf'], tooltip: { trigger: 'axis', //坐标轴点上去触发 axisPointer: {type: 'shadow'} }, xAxis: { type: 'category', data: collegeNameList.value, axisTick: { alignWithLabel: true }, //修改 axisLabel: { color: "rgba(255,255,255,.6)", fontSize: 12, // 调大字体大小 interval: 0, // 强制显示所有标签 rotate: 30, // 旋转标签以避免重叠 formatter: function (value) { // 如果名称超过10个字符，显示省略号 return value.length > 10 ? value.slice(0, 10) + '...' : value; } }, axisLine: { show: false, // 如果想要设置单独的线条样式 lineStyle: { color: "rgba(255,255,255,.1)", width: 1, type: "solid" } } }, yAxis: { type: 'value', axisLabel: { color: "rgba(255,255,255,.6)", fontSize: "12" }, // y轴线条样式 axisLine: { lineStyle: { color: "rgba(255,255,255,.1)", // width: 1, // type: "solid" } }, // y 轴分隔线样式 splitLine: { lineStyle: { color: "rgba(255,255,255,.1)" } } }, //配置数据的 series: [{ name: '学生数量', type: 'bar', barWidth: '35%', data: collegeNumberList.value, itemStyle: { barBorderRadius: 5 } }] }; ```

<h4 id="hA9LP">中国地图</h4>
``javascript
import china from '@/json/china.json'  //导入地图的json数据


const mockData = ref([])

//从后端拿到地图的数据 [{'nane':'北京市','value':500}]
const getmokcData = async () => {
  const res = await getStudentProvince();
  mockData.value = res.data.data
  await nextTick(() => {
    getEcharts3();
  });
}

 let initMap = echarts.init(document.querySelector('#mapDom')); //初始化
  //注册中国地图
 echarts.registerMap('china', china);

//拿到前五的数据
  let topFiveData = mockData.value.sort((a, b) => b.value - a.value).slice(0, 5);
  // 将筛选后的数据转换为 ECharts 需要的格式
  let data = topFiveData.map(i => {
    let cityPosition = getCityPositionByName(i.name);
    return {
      name: i.name,
      value: cityPosition ? [...cityPosition.value.map(Number), i.value] : [0, 0, i.value]
    };
  });
// 创建一个方便查找的字典对象
  let mockDataMap = mockData.value.reduce((acc, item) => {
    acc[item.name] = item.value;
    return acc;
  }, {});

  let options = {
    title: {
      text: '学生家乡分布',
      left: 'center',
      textStyle: {
        color: '#fa4c27',
        fontSize: 18,
        fontWeight: 'bold'
      }
    },
    tooltip: {
      trigger: 'item',
      formatter: (params) => {
        // 从 mockDataMap 中获取对应省份的数据值
        let count = mockDataMap[params.name] || 0; // 确保显示为0而不是NaN
        return `${params.name}<br/>${count} (学生总数)`;
      }
    },
    //又下角的工具
    toolbox: {
      show: true,
      orient: 'vertical',
      left: 'right',
      top: 'center',
      feature: {
        dataView: {readOnly: false, title: '数据视图'},
        restore: {title: '还原'},
        saveAsImage: {title: '保存为图片', pixelRatio: 2}
      }
    },
    visualMap: {
      min: 0,
      max: Math.max(...topFiveData.map(d => d.value)),
      text: ['High', 'Low'],
      realtime: false,
      calculable: true,
      inRange: {
        color: ['#e0f7fa', '#80deea', '#0288d1']
      }
    },
    //地图坐标
    geo: {
      map: 'china',
      roam: false,
      // zoom: 1, // 调整这个值来放大地图
      label: {
        show: false
      },
      emphasis: {
        label: {
          show: false
        }
      }
    },
    series: [
      {
        name: '中国',
        type: 'map',
        map: 'china',
        label: {
          show: false
        },
        data: mockData.value,
      },
      {
        type: 'scatter',
        coordinateSystem: 'geo',
        symbol: 'pin',
        symbolSize: [50, 50],
        label: {
          show: true,
          color: '#fff',
          formatter(value) {
            return value.name + value.data.value[2]; // 显示人数
          },
          fontSize: 10
        },
        itemStyle: {
          color: '#e30707' // 标记颜色
        },
        data: data,
      }
    ]
  };

  initMap.setOption(options);

背景样式
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

li {
  list-style: none;
}

@font-face {
  font-family: electronicFont;
  src: url("@/assets/font/DS-DIGIT.TTF");
}

.header {
  position: relative;
  height: 1.25rem;
  background: url('@/assets/images/head_bg.png') no-repeat top center;
  background-color: #0b1341;
  background-size: 100% 100%;
  h1 {
    font-size: 0.475rem;
    color: #fff;
    text-align: center;
    line-height: 1rem;
  }
  .showTime {
    position: absolute;
    top: 0;
    right: 0.375rem;
    line-height: 0.9375rem;
    font-size: 0.25rem;
    color: rgba(255, 255, 255, 0.7);
  }
}


.mainbox {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  padding: 0;
  /*  背景图定位 / 背景图尺寸  cover 完全铺满容器  contain 完整显示在容器内 */
  background: url('@/assets/images/bg.jpg') no-repeat #000;
  background-size: cover;
  /* 行高是字体1.15倍 */
  line-height: 1.15;
}


.mainbox {
  min-width: 1024px;
  max-width: 1920px;
  padding: 0.125rem 0.125rem 0;
  display: flex;

  .column {
    flex: 3;

    &:nth-child(2) {
      flex: 5;
      margin: 0 0.125rem 0.1875rem;
      overflow: hidden;
    }
  }
}

.panel {
  position: relative;
  height: 3.875rem;
  border: 1px solid rgba(25, 186, 139, 0.17);
  background: rgba(255, 255, 255, 0.04) url('@/assets/images/line.png');
  padding: 0 0.1875rem 0.5rem;
  margin-bottom: 0.1875rem;

  &::before {
    position: absolute;
    top: 0;
    left: 0;
    content: "";
    width: 10px;
    height: 10px;
    border-top: 2px solid #02a6b5;
    border-left: 2px solid #02a6b5;
  }

  &::after {
    position: absolute;
    top: 0;
    right: 0;
    content: "";
    width: 10px;
    height: 10px;
    border-top: 2px solid #02a6b5;
    border-right: 2px solid #02a6b5;
  }

  .panel-footer {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
   //z-index: 0;
    &::before {
      position: absolute;
      bottom: 0;
      left: 0;
      content: "";
      width: 10px;
      height: 10px;
      border-bottom: 2px solid #02a6b5;
      border-left: 2px solid #02a6b5;
    }

    &::after {
      position: absolute;
      bottom: 0;
      right: 0;
      content: "";
      width: 10px;
      height: 10px;
      border-bottom: 2px solid #02a6b5;
      border-right: 2px solid #02a6b5;
    }
  }
  //.panel-footer::before, .panel-footer::after {
  //  z-index: 0; /* 确保伪元素在 panel-footer 下层 */
  //}
  h2 {
    //z-index: 1; /* 确保 panel 在最上层 */
    height: 0.6rem;
    line-height: 0.6rem;
    text-align: center;
    color: #fff;
    font-size: 0.25rem;
    font-weight: 400;

    a {
      margin: 0 0.1875rem;
      color: #fff;
      text-decoration: underline;
    }
  }

  .chart {
    height: 3rem;
  }
}

.no {
  background: rgba(101, 132, 226, 0.1);
  padding: 0.1875rem;

  .no-hd {
    position: relative;
    border: 1px solid rgba(25, 186, 139, 0.17);

    &::before {
      content: "";
      position: absolute;
      width: 30px;
      height: 10px;
      border-top: 2px solid #02a6b5;
      border-left: 2px solid #02a6b5;
      top: 0;
      left: 0;
    }

    &::after {
      content: "";
      position: absolute;
      width: 30px;
      height: 10px;
      border-bottom: 2px solid #02a6b5;
      border-right: 2px solid #02a6b5;
      right: 0;
      bottom: 0;
    }

    ul {
      display: flex;

      li {
        position: relative;
        flex: 1;
        text-align: center;
        height: 1rem;
        line-height: 1rem;
        font-size: 0.875rem;
        color: #ffeb7b;
        padding: 0.05rem 0;
        font-family: electronicFont;
        font-weight: bold;

        &:first-child::after {
          content: "";
          position: absolute;
          height: 50%;
          width: 1px;
          background: rgba(255, 255, 255, 0.2);
          right: 0;
          top: 25%;
        }
      }
    }
  }

  .no-bd ul {
    display: flex;

    li {
      flex: 1;
      height: 0.5rem;
      line-height: 0.5rem;
      text-align: center;
      font-size: 0.225rem;
      color: rgba(255, 255, 255, 0.7);
      padding-top: 0.125rem;
    }
  }
}

.map {
  position: relative;
  height: 10.125rem;

  .chart {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 5;
    height: 10.125rem;
    width: 100%;
  }

  .map1,
  .map2,
  .map3 {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 6.475rem;
    height: 6.475rem;
    background: url('@/assets/images/map.png') no-repeat;
    background-size: 100% 100%;
    opacity: 0.3;
  }

  .map2 {
    width: 8.0375rem;
    height: 8.0375rem;
    background-image: url('@/assets/images/lbx.png');
    opacity: 0.6;
    animation: rotate 15s linear infinite;
    z-index: 2;
  }

  .map3 {
    width: 7.075rem;
    height: 7.075rem;
    background-image: url('@/assets/images/jt.png');
    animation: rotate1 10s linear infinite;
  }

  @keyframes rotate {
    from {
      transform: translate(-50%, -50%) rotate(0deg);
    }
    to {
      transform: translate(-50%, -50%) rotate(360deg);
    }
  }
  @keyframes rotate1 {
    from {
      transform: translate(-50%, -50%) rotate(0deg);
    }
    to {
      transform: translate(-50%, -50%) rotate(-360deg);
    }
  }
}

@media screen and (max-width: 1024px) {
  html {
    font-size: 42px !important;
  }
}

@media screen and (min-width: 1920px) {
  html {
    font-size: 80px !important;
  }
}

template

整体结构是 flex布局 3 5 3 布局样式。

<template>
  
  <div class="header">
    <h1>工程数据分析</h1>
    <div class="showTime"></div>
  </div>

  
  <!-- 页面主体  一个大的盒子  划分 -->
  <div class="mainbox">
    <div class="column">
      <div class="panel bar" ref="chart1">
        <div class="chart"></div>
        <!--        <h2 style="color: red">学院人数排名前五</h2>-->
        <div class="panel-footer"></div>
      </div>
      <div class="panel line" ref="chart2">
        <div class="chart"></div>
        <h2>标题</h2>
        <div class="panel-footer"></div>
      </div>
      <div class="panel pie">
        <h2></h2>
        <div class="panel-footer"></div>
      </div>
    </div>


    <div class="column">
      <div class="no">
        <div class="no-hd">
          <ul>
            <li>{{ stNumber.numberTeacher }}</li>
            <li>{{ stNumber.numberStudent }}</li>
          </ul>
        </div>
        <div class="no-bd">
          <ul>
            <li>学生人数</li>
            <li>老师人数</li>
          </ul>
        </div>
      </div>
      <!-- 地图模块 -->
      <div class="map">
        <!-- 放到map中间 -->
        <div class="chart" id="mapDom"></div>
        <div class="map1"></div>
        <div class="map2"></div>
        <div class="map3"></div>
      </div>
    </div>


    <div class="column">
      <div class="panel bar" >
        <h2></h2>
        <div class="chart" id="hobbyRef"></div>
        <div class="panel-footer"></div>
      </div>
      <div class="panel line">
        <h2></h2>

        <div class="panel-footer"></div>
      </div>
      <div class="panel pie">
        <h2></h2>
        <div class="panel-footer"></div>
      </div>

    </div>
  </div>
</template>

标签：SpringBoot,color,Vue3,value,height,collect,rem,大屏,255
From： https://blog.csdn.net/ngczx/article/details/143793377