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专辑

第十五节 SSM框架使用ECharts图表

亮子 2023-10-18 11:49:52 13523 0 0 0

1、echarts库的引用

1）、把相应的库拷贝到webapp目录

图片alt

2）、在jsp中引入

    <script src="/zg2/js/jquery-1.8.3.js"></script>
    <script src="/zg2/js/echarts.js"></script>

2、java代码

package com.sm2107a.zg2.controller;

import com.sm2107a.zg2.pojo.TbUser;
import com.sm2107a.zg2.service.TbUserService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

/**
 * @author 军哥
 * @version 1.0
 * @description: EChart图表的示例
 * @date 2023/10/19 14:40
 */

@Controller
@Slf4j
@RequestMapping(value = "/echarts")
public class EChartController {

    @Autowired
    TbUserService tbUserService;

    @GetMapping(value = "/index")
    public String index() {
        return "/echarts/index";
    }

    @PostMapping(value = "/getUserAge")
    @ResponseBody
    public Object getUserAge() {
        List<TbUser> list = tbUserService.list();

        //-- 组织数据
        ArrayList<String> names = new ArrayList<>();
        ArrayList<Integer> ages = new ArrayList<>();

        //-- 生成饼状图的数据
        ArrayList<HashMap<String, Object>> hashMapArrayList = new ArrayList<>();

        for (TbUser tbUser : list) {
            names.add(tbUser.getUserName());
            ages.add(tbUser.getUserAge());

            HashMap<String, Object> integerHashMap = new HashMap<>();
            integerHashMap.put("value", tbUser.getUserAge());
            integerHashMap.put("name", tbUser.getUserName());

            hashMapArrayList.add(integerHashMap);
        }





        //-- 返回数据
        HashMap<String, Object> map = new HashMap<>();
        map.put("names", names);
        map.put("ages", ages);
        map.put("pie", hashMapArrayList);
        map.put("code", 200);

        return map;
    }

    /***
     * @description 三种图形显示再一个页面上
     * @params
     * @return java.lang.String
     * @author 军哥
     * @date 2023/10/19 15:54
     */
    @GetMapping(value = "/three")
    public String three() {
        return "/echarts/three";
    }

}

3、jsp页面

<%--
  Created by IntelliJ IDEA.
  User: andy
  Date: 2023/11/17
  Time: 16:06
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>订单汇总统计</title>
    <script src="/zg2/js/echarts.js" ></script>
    <script src="/zg2/js/jquery-1.8.3.js" ></script>
</head>
<body>

<div>
    <div id="main" style="width: 400px;height:300px;"></div>
</div>
<div>
    <input type="button" value="显示折线图" onclick="showEcharts(1)">
    <input type="button" value="显示柱状图" onclick="showEcharts(2)">
    <input type="button" value="显示饼状图" onclick="showEcharts(3)">
</div>

<script type="text/javascript">

    // 获取数据并显示图形
    function showEcharts(type) {
        $.post("/zg2/chart/getUserAmount.do", {}, function (res) {

            if(type == 1) {
                // 显示折线图
                var myChart = echarts.init(document.getElementById('main'));
                var option = {
                    title: {
                        text: 'ECharts 2108A'
                    },
                    tooltip: {},
                    legend: {
                        data: ['账单金额']
                    },
                    xAxis: {
                        data: res.xdata
                    },
                    yAxis: {},
                    // 定义图形的样式
                    // bar 柱状图  line 折线图 pie 饼状图
                    series: [
                        {
                            name: '账单金额',
                            type: 'line',
                            data: res.ydata
                        }
                    ]
                };
                myChart.setOption(option, true);
            }
            else if(type == 2) {
                // 显示柱状图
                // 显示折线图
                var myChart = echarts.init(document.getElementById('main'));
                var option = {
                    title: {
                        text: 'ECharts 2108A'
                    },
                    tooltip: {},
                    legend: {
                        data: ['账单金额']
                    },
                    xAxis: {
                        data: res.xdata
                    },
                    yAxis: {},
                    // 定义图形的样式
                    // bar 柱状图  line 折线图 pie 饼状图
                    series: [
                        {
                            name: '账单金额',
                            type: 'bar',
                            data: res.ydata
                        }
                    ]
                };
                myChart.setOption(option, true);
            }
            else if(type == 3) {
                // 显示饼状图
                // 显示折线图
                var myChart = echarts.init(document.getElementById('main'));
                var option = {
                    title: {
                        text: 'ECharts 2108A'
                    },
                    tooltip: {},
                    legend: {
                        data: ['账单金额']
                    },
                    // 定义图形的样式
                    // bar 柱状图  line 折线图 pie 饼状图
                    series: [
                        {
                            name: 'Access From',
                            type: 'pie',
                            radius: '50%',
                            data: res.pies
                        }
                    ]
                };
                myChart.setOption(option, true);
            }

        });
    }

    $(document).ready(function () {

        // 默认显示并状态
        showEcharts(3);
    });
</script>

</body>
</html>