vue中使用echarts并根據(jù)選擇條件動(dòng)態(tài)展示echarts圖表

更新時(shí)間：2023年12月19日 11:20:23 作者：m0_62317155

雖然老早就看過(guò)很多echarts的例子, 但自己接觸的項(xiàng)目中一直都沒(méi)有真正用到過(guò),直到最近才開(kāi)始真正使用,下面這篇文章主要給大家介紹了關(guān)于vue中使用echarts并根據(jù)選擇條件動(dòng)態(tài)展示echarts圖表的相關(guān)資料,需要的朋友可以參考下

前言

以前在使用echarts的時(shí)候，想要根據(jù)選擇條件讓echarts的圖片也跟著變化，我經(jīng)常是放在vue的watch中監(jiān)聽(tīng)數(shù)據(jù)的變化來(lái)實(shí)現(xiàn)的。但是這里我發(fā)現(xiàn)了一個(gè)更加簡(jiǎn)單的方法，不需要在vue的watch中監(jiān)聽(tīng)數(shù)據(jù)也可以實(shí)現(xiàn)，具體代碼和運(yùn)行結(jié)果如下所示

echarts官網(wǎng)示例

Examples - Apache ECharts

1、在vue中使用echarts圖表，官網(wǎng)示例

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <!-- vue在線引入 -->
    <script src="https://cdn.jsdelivr.net/npm/vue@2.7.14/dist/vue.js"></script>
    <!-- 引入樣式 -->
    <link rel="stylesheet"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >
    <!-- 引入組件庫(kù) -->
    <script src="https://unpkg.com/element-ui/lib/index.js"></script>
    <!-- 在線引入echarts -->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/echarts/5.4.1/echarts.min.js"></script>
</head>

<body>
    <div id="app">
        <div id="main" style="width: 500px; height: 400px;"></div>
    </div>
    <script>
        var app = new Vue({
            el: '#app',
            data: {
                myChart: null
            },
            methods: {
                // 初始化echarts
                initEcharts() {
                    var chartDom = document.getElementById('main');
                    // 將創(chuàng)建的echarts示例放到vue的data中，這樣在這個(gè)界面就想到于全局配置了
                    this.myChart = echarts.init(chartDom);
                },
                // 配置echarts的option，展示數(shù)據(jù)圖表
                setEchartsOption() {
                    // 這里可以發(fā)送axios請(qǐng)求，然后通過(guò)響應(yīng)的數(shù)據(jù)賦值給對(duì)應(yīng)的x軸和y軸即可，由于這里沒(méi)有于后端聯(lián)調(diào)，所以簡(jiǎn)單請(qǐng)求判斷一下，
                    // 請(qǐng)求后端大概也是這個(gè)過(guò)程
                    var option;

                    option = {
                        tooltip: {
                            trigger: 'axis',
                            axisPointer: {
                                type: 'shadow'
                            }
                        },
                        grid: {
                            left: '3%',
                            right: '4%',
                            bottom: '3%',
                            containLabel: true
                        },
                        xAxis: [
                            {
                                type: 'category',
                                data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],
                                axisTick: {
                                    alignWithLabel: true
                                }
                            }
                        ],
                        yAxis: [
                            {
                                type: 'value'
                            }
                        ],
                        series: [
                            {
                                name: 'Direct',
                                type: 'bar',
                                barWidth: '60%',
                                data: [10, 52, 200, 334, 390, 330, 220]
                            }
                        ]
                    };

                    option && this.myChart.setOption(option);
                },
            },
            mounted() {
                // 注意調(diào)用順序，先初始化echarts才給echarts賦值
                this.initEcharts()
                this.setEchartsOption()
            }
        })
    </script>
</body>

</html>

2、根據(jù)條件選擇展示echarts圖表，這里沒(méi)有發(fā)送axios請(qǐng)求

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <!-- vue在線引入 -->
    <script src="https://cdn.jsdelivr.net/npm/vue@2.7.14/dist/vue.js"></script>
    <!-- 引入樣式 -->
    <link rel="stylesheet"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >
    <!-- 引入組件庫(kù) -->
    <script src="https://unpkg.com/element-ui/lib/index.js"></script>
    <!-- 在線引入echarts -->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/echarts/5.4.1/echarts.min.js"></script>
</head>

<body>
    <div id="app">
        <el-row>
            <el-select v-model="value" filterable placeholder="請(qǐng)選擇" @change="setEchartsOption">
                <el-option v-for="item in options" :key="item.value" :label="item.label" :value="item.value">
                </el-option>
            </el-select>
            <el-button type="primary" @click="searchButton">查詢(xún)</el-button>
        </el-row>
        <el-row>
            <div id="main" style="width: 500px; height: 400px;"></div>
        </el-row>
    </div>
    <script>
        var app = new Vue({
            el: '#app',
            data: {
                myChart: null,
                options: [{
                    value: '星期六',
                    label: '星期六'
                }, {
                    value: '星期日',
                    label: '星期日'
                }],
                value: '星期六',

                zhouliu: {
                    xValue: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],
                    yValue: [10, 52, 200, 334, 390, 330, 220]
                },
                zhouri: {
                    xValue: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],
                    yValue: [50, 80, 40, 99, 300, 88, 160]
                }

            },
            methods: {
                // 初始化echarts
                initEcharts() {
                    var chartDom = document.getElementById('main');
                    // 將創(chuàng)建的echarts示例放到vue的data中，這樣在這個(gè)界面就想到于全局配置了
                    this.myChart = echarts.init(chartDom);
                },
                // 配置echarts的option，展示數(shù)據(jù)圖表
                setEchartsOption() {
                    // 這里可以發(fā)送axios請(qǐng)求，然后通過(guò)響應(yīng)的數(shù)據(jù)賦值給對(duì)應(yīng)的x軸和y軸即可，由于這里沒(méi)有于后端聯(lián)調(diào)，所以簡(jiǎn)單請(qǐng)求判斷一下，
                    // 請(qǐng)求后端大概也是這個(gè)過(guò)程
                    var xValue = null;
                    var yValue = null;
                    if (this.value === '星期六') {
                        xValue = this.zhouliu.xValue
                        yValue = this.zhouliu.yValue
                    } else if (this.value === '星期日') {
                        xValue = this.zhouri.xValue
                        yValue = this.zhouri.yValue
                    }
                    var option;
                    option = {
                        tooltip: {
                            trigger: 'axis',
                            axisPointer: {
                                type: 'shadow'
                            }
                        },
                        grid: {
                            left: '3%',
                            right: '4%',
                            bottom: '3%',
                            containLabel: true
                        },
                        xAxis: [
                            {
                                type: 'category',
                                data: xValue,
                                axisTick: {
                                    alignWithLabel: true
                                }
                            }
                        ],
                        yAxis: [
                            {
                                type: 'value'
                            }
                        ],
                        series: [
                            {
                                name: 'Direct',
                                type: 'bar',
                                barWidth: '60%',
                                data: yValue
                            }
                        ]
                    };

                    option && this.myChart.setOption(option);
                },
                searchButton() {
                    // 為了避免重復(fù)初始化echarts, 我們?cè)邳c(diǎn)擊按鈕的時(shí)候可以調(diào)用echarts的clear方法清楚一下，然后再重新調(diào)用函數(shù)進(jìn)行對(duì)echarts的賦值
                    this.myChart.clear() // 這一句有沒(méi)有都可以
                    this.setEchartsOption()
                }
            },
            mounted() {
                // 注意調(diào)用順序，先初始化echarts才給echarts賦值
                this.initEcharts()
                this.setEchartsOption()
            }
        })
    </script>
</body>

</html>

3、結(jié)合使用axios請(qǐng)求展示圖表

mysql數(shù)據(jù)庫(kù)數(shù)據(jù)數(shù)據(jù)如下所示

后端返回的數(shù)據(jù)格式

可以根據(jù)傳入的時(shí)間獲得需要的數(shù)據(jù)

{
    "code": 200,
    "message": "查詢(xún)成功！",
    "data": [
        {
            "id": 1,
            "count": 24,
            "createTime": "2023-02-15T14:17:50"
        },
        {
            "id": 2,
            "count": 32,
            "createTime": "2023-02-16T14:18:19"
        },
        {
            "id": 3,
            "count": 40,
            "createTime": "2023-02-17T14:18:30"
        },
        {
            "id": 4,
            "count": 16,
            "createTime": "2023-02-18T14:18:44"
        },
        {
            "id": 5,
            "count": 88,
            "createTime": "2023-02-19T14:18:59"
        },
        {
            "id": 6,
            "count": 8,
            "createTime": "2023-02-20T14:19:11"
        },
        {
            "id": 7,
            "count": 160,
            "createTime": "2023-02-21T14:19:27"
        },
        {
            "id": 8,
            "count": 108,
            "createTime": "2023-02-22T14:19:38"
        }
    ]
}

前端代碼

vue+elementUI

可以直接復(fù)制使用

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <!-- vue在線引入 -->
    <script src="https://cdn.jsdelivr.net/npm/vue@2.7.14/dist/vue.js"></script>
    <!-- 引入樣式 -->
    <link rel="stylesheet"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >
    <!-- 引入組件庫(kù) -->
    <script src="https://unpkg.com/element-ui/lib/index.js"></script>
    <!-- 在線引入echarts -->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/echarts/5.4.1/echarts.min.js"></script>
    <!-- axios -->
    <script src="https://unpkg.com/axios/dist/axios.min.js"></script>
</head>

<body>
    <div id="app">
        <el-row>
            <el-date-picker v-model="value1" type="datetimerange" start-placeholder="開(kāi)始日期" end-placeholder="結(jié)束日期"
                value-format="yyyy-MM-dd HH:mm:ss" :default-time="['00:00:00']">
            </el-date-picker>
            <el-button type="primary" @click="searchButton">查詢(xún)</el-button>
        </el-row>
        <el-row>
            <div id="main" style="width: 500px; height: 400px;"></div>
        </el-row>
    </div>
    <script>
        var app = new Vue({
            el: '#app',
            data: {
                myChart: null,
                value1: [
                    '2023-02-15 14:17:50',
                    '2023-02-22 14:19:38'
                ],
            },
            methods: {
                // 初始化echarts
                initEcharts() {
                    var chartDom = document.getElementById('main');
                    // 將創(chuàng)建的echarts示例放到vue的data中，這樣在這個(gè)界面就想到于全局配置了
                    this.myChart = echarts.init(chartDom);
                },
                // 配置echarts的option，展示數(shù)據(jù)圖表
                async setEchartsOption() {
                    // 這里可以發(fā)送axios請(qǐng)求，然后通過(guò)響應(yīng)的數(shù)據(jù)賦值給對(duì)應(yīng)的x軸和y軸即可，由于這里沒(méi)有于后端聯(lián)調(diào)，所以簡(jiǎn)單請(qǐng)求判斷一下，
                    const result = await axios.get(`http://localhost:8080/echarts/getechartslistbytime?startTime=${this.value1[0]}&endTime=${this.value1[1]}`)
                    console.log(result.data.data)
                    var xValue = null;
                    var yValue = null;
                    if (result.data.data) {
                        xValue = result.data.data.map(item => {
                            return item.createTime.split('T')[0]
                        })
                        yValue = result.data.data.map(item => {
                            return item.count
                        })
                    }
                    var option;
                    option = {
                        tooltip: {
                            trigger: 'axis',
                            axisPointer: {
                                type: 'shadow'
                            }
                        },
                        grid: {
                            left: '3%',
                            right: '4%',
                            bottom: '3%',
                            containLabel: true
                        },
                        xAxis: [
                            {
                                type: 'category',
                                data: xValue,
                                axisTick: {
                                    alignWithLabel: true
                                }
                            }
                        ],
                        yAxis: [
                            {
                                type: 'value'
                            }
                        ],
                        series: [
                            {
                                name: '數(shù)量',
                                type: 'bar',
                                barWidth: '60%',
                                data: yValue
                            }
                        ]
                    };

                    option && this.myChart.setOption(option);
                },
                searchButton() {
                    // 為了避免重復(fù)初始化echarts, 我們?cè)邳c(diǎn)擊按鈕的時(shí)候可以調(diào)用echarts的clear方法清楚一下，然后再重新調(diào)用函數(shù)進(jìn)行對(duì)echarts的賦值
                    this.myChart.clear() // 這一句有沒(méi)有都可以
                    this.setEchartsOption()
                }
            },
            mounted() {
                // 注意調(diào)用順序，先初始化echarts才給echarts賦值
                this.initEcharts()
                this.setEchartsOption()
            }
        })
    </script>
</body>

</html>

其實(shí)這里也可以用折線圖，過(guò)程都差不多的

后端代碼

springboot+mysql+mybatis-plus，剛好這里有springboot結(jié)合mybatis-plus的用法

后端代碼各個(gè)文件的位置截圖如下

mysql數(shù)據(jù)庫(kù)建表語(yǔ)句和插入數(shù)據(jù)語(yǔ)句

SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------
-- Table structure for echarts
-- ----------------------------
DROP TABLE IF EXISTS `echarts`;
CREATE TABLE `echarts`  (
  `id` int NOT NULL AUTO_INCREMENT COMMENT '主鍵id',
  `count` int NULL DEFAULT NULL COMMENT '統(tǒng)計(jì)數(shù)量',
  `create_time` datetime NULL DEFAULT NULL COMMENT '創(chuàng)建時(shí)間',
  PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;

-- ----------------------------
-- Records of echarts
-- ----------------------------
INSERT INTO `echarts` VALUES (1, 24, '2023-02-15 14:17:50');
INSERT INTO `echarts` VALUES (2, 32, '2023-02-16 14:18:19');
INSERT INTO `echarts` VALUES (3, 40, '2023-02-17 14:18:30');
INSERT INTO `echarts` VALUES (4, 16, '2023-02-18 14:18:44');
INSERT INTO `echarts` VALUES (5, 88, '2023-02-19 14:18:59');
INSERT INTO `echarts` VALUES (6, 8, '2023-02-20 14:19:11');
INSERT INTO `echarts` VALUES (7, 160, '2023-02-21 14:19:27');
INSERT INTO `echarts` VALUES (8, 108, '2023-02-22 14:19:38');

SET FOREIGN_KEY_CHECKS = 1;

application.yml

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/echarts-demo?characterEncoding=utf-8&serverTimezone=Asia/Shanghai
    username: root
    password: root

mybatis-plus:
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

啟動(dòng)器類(lèi)

@SpringBootApplication
@MapperScan("com.example.dao")
public class EchartsDemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(EchartsDemoApplication.class, args);
    }

}

Controller

@RestController
@RequestMapping("echarts")
@CrossOrigin // 允許跨域
public class EchartsController{
    /**
     * 服務(wù)對(duì)象
     */
    @Autowired
    private EchartsService echartsService;

    @GetMapping("/getechartslistbytime")
    public R getEchartsListByTime(String startTime, String endTime) {
        return echartsService.getEchartsListByTime(startTime,endTime);
    }
}

dao或者mapper

public interface EchartsDao extends BaseMapper<Echarts> {
}

實(shí)體類(lèi)，這里包括統(tǒng)一響應(yīng)格式的R對(duì)象

Echarts類(lèi)

public class Echarts {
    //主鍵id
    private Integer id;
    //統(tǒng)計(jì)數(shù)量
    private Integer count;
    //創(chuàng)建時(shí)間
    private LocalDateTime createTime;


    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public Integer getCount() {
        return count;
    }

    public void setCount(Integer count) {
        this.count = count;
    }

    public LocalDateTime getCreateTime() {
        return createTime;
    }

    public void setCreateTime(LocalDateTime createTime) {
        this.createTime = createTime;
    }
}

R對(duì)象

package com.example.domain;

public class R {
    private Integer code;
    private String message;
    private Object data;

    public R(Integer code, String message) {
        this.code = code;
        this.message = message;
    }

    public R(Integer code, String message, Object data) {
        this.code = code;
        this.message = message;
        this.data = data;
    }

    public Integer getCode() {
        return code;
    }

    public void setCode(Integer code) {
        this.code = code;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public Object getData() {
        return data;
    }

    public void setData(Object data) {
        this.data = data;
    }
}

Service接口

public interface EchartsService extends IService<Echarts> {

    R getEchartsListByTime(String startTime, String endTime);
}

ServiceImpl實(shí)現(xiàn)類(lèi)

@Service("echartsService")
public class EchartsServiceImpl extends ServiceImpl<EchartsDao, Echarts> implements EchartsService {

    @Override
    public R getEchartsListByTime(String startTime, String endTime) {
        LambdaQueryWrapper<Echarts> queryWrapper = new LambdaQueryWrapper<>();
        // ge 是>=
        queryWrapper.ge((startTime != null && startTime.length() > 0), Echarts::getCreateTime, startTime);
        queryWrapper.le((endTime != null && endTime.length() > 0), Echarts::getCreateTime, endTime);
        // 這里就相當(dāng)于SELECT id,count,create_time FROM echarts WHERE (create_time >= ? AND create_time <= ?)
        List<Echarts> list = this.list(queryWrapper);
        return new R(200, "查詢(xún)成功！", list);
    }
}

總結(jié)

到此這篇關(guān)于vue中使用echarts并根據(jù)選擇條件動(dòng)態(tài)展示echarts圖表的文章就介紹到這了,更多相關(guān)vue使用echarts圖表內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

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