Echarts连接mysql数据的实例

        //创建ECharts图表方法

        function DrawEChart(ec) {

            //--- 折柱 ---

            myChart = ec.init(document.getElementById('main'))

            //图表显示提示信息

            myChart.showLoading({

                text: "图表数据正在努力加载..."

            })

            //定义图表options

            var options = {

                title: {

                    text: "通过Ajax获取数据呈现图标示例",

                    subtext: "www.stepday.com",

                    sublink: "http://www.stepday.com/myblog/?Echarts"

                },

                tooltip: {

                    trigger: 'axis'

                },

                legend: {

                    data: []

                },

                toolbox: {

                    show: true,

                    feature: {

                        mark: false

                    }

                },

                calculable: true,

                xAxis: [

                    {

                        type: 'category',

                        data: []

                    }

                ],

                yAxis: [

                    {

                        type: 'value',

                        splitArea: { show: true }

                    }

                ],

                series: []

            }

            //通过Ajax获取数据

            $.ajax({

                type: "post",

                async: false, //同步执行

                url: "/Ajax/GetChartData.aspx?type=getData&count=12",

                dataType: "json", //返回数据形式为json

                success: function (result) {

                    if (result) {                        

                        //将返回的category和series对象赋值给options对象内的category和series

                        //因为xAxis是一个数组 这里需要是xAxis[i]的形式

                        options.xAxis[0].data = result.category

                        options.series = result.series

                        options.legend.data = result.legend

                        myChart.hideLoading()

                        myChart.setOption(options)

                    }

                },

                error: function (errorMsg) {

                    alert("不好意思，大爷，图表请求数据失败啦!")

                }

            })

        }

参考：http://www.stepday.com/topic/?906

Echarts是前端的图表，百度上有Demo的，只要从后台向前台传递json数据，解析下绑定到Echarts上，即可显示效果。

步骤：

后台取到数据，转化为json；

前台获取到json，改写Echarts调用的js；