javascript - 通过调用ajax api（json响应）创建amcharts

Question

我正在尝试通过调用 ajax api（以 json 格式响应）来创建 amcharts，通过调用 post api 我在 console.log 中获得所需的数据，但图表未显示。请检查代码，并建议我缺少什么。我只使用 jquery 和 HTML，如果 api 不起作用，请用东西数据解释我。

我可以通过使用 amcharts 的 dataLoader 插件来实现这一点吗？如果是，请向我解释如何使用 dataLoader 来实现。请检查我的代码并更新我如何首先通过 json 响应绘制图表。

这是我的工作代码

$(function () {
    $("[id*=btnok]").click(function () {
        var obj = {};
        obj = $.trim($("[id*=nodays]").val());
        console.log(obj)
        $.ajax({
            type: "POST",
            "headers": {
                "content-type": "application/json",
                "cache-control": "no-cache"
            },
            url: "http://10.26.32.4/api/rating-service/rate/ridecount/days/",
            data: JSON.stringify(obj),
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            success: function (r) {
                console.log(r)
                AmCharts.makeChart("rides", {
                    "type": "serial",
                    "fixedColumnWidth": '10px',

                    "legend": {
                        "horizontalGap": 10,
                        "maxColumns": 1,
                        "position": "right",
                        "useGraphSettings": true,
                        "markerSize": 10
                    },
                    "valueAxes": [{
                        "gridColor": "#FFFFFF",
                        "gridAlpha": 0.2,
                        "dashLength": 0
        }],
                    "gridAboveGraphs": true,
                    "startDuration": 1,

                    "valueAxes": [{
                        "stackType": "regular",
                        "axisAlpha": 0.3,
                        "gridAlpha": 0,
                        "minimum": 0,
                        "maximum": 50,
                        "gridCount": 1

        }],
                    "graphs": [{
                        "balloonText": "<b>[[title]]</b><br><span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>",
                        "fillColors": "#47b012",
                        "lineColor": "#47b012",
                        "fillAlphas": 0.8,
                        "labelText": "[[value]]",
                        "lineAlpha": 0.3,
                        "title": "Completed Rides",
                        "type": "column",
                        "color": "#000000",
                        "valueField": "completedTrip",
                        "fixedColumnWidth": 25
        }, {
                        "balloonText": "<b>[[title]]</b><br><span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>",
                        "fillColors": "#fff138",
                        "lineColor": "#fff138",
                        "fillAlphas": 0.8,
                        "labelText": "[[value]]",
                        "lineAlpha": 0.3,
                        "title": "Not Ended",
                        "type": "column",
                        "color": "#000000",
                        "valueField": "activeTrip",
                        "fixedColumnWidth": 25
        }, {
                        "balloonText": "<b>[[title]]</b><br><span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>",
                        "fillColors": "#dd111b",
                        "lineColor": "#dd111b",
                        "fillAlphas": 0.8,
                        "labelText": "[[value]]",
                        "lineAlpha": 0.3,
                        "title": "Canceled Rides",
                        "type": "column",
                        "color": "#000000",
                        "valueField": "cancelledTrip",
                        "fixedColumnWidth": 25
        }],
                    "chartCursor": {
                        "categoryBalloonEnabled": false,
                        "cursorAlpha": 0,
                        "zoomable": false
                    },
                    "categoryField": "creationDate",
                    "categoryAxis": {
                        "gridPosition": "start",
                        "gridAlpha": 0,
                        "tickPosition": "start",
                        "tickLength": 20,
                        "labelRotation": 60
                    }
                });


            }
        });
        return false;
    });

});

标签： javascriptjqueryhtmlajaxamcharts

Answer 1

dataLoader 只支持 GET 请求，所以它不是一个选项。

我发现您的代码唯一有问题的是您没有将您的响应分配给图表的dataProvider. 假设您的响应格式正确（对象数组）：

    $.ajax({
        type: "POST",
        "headers": {
            "content-type": "application/json",
            "cache-control": "no-cache"
        },
        url: "http://10.26.32.4/api/rating-service/rate/ridecount/days/",
        data: JSON.stringify(obj),
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (r) {
            console.log(r)
            AmCharts.makeChart("rides", {
                "type": "serial",
                "fixedColumnWidth": '10px',
                "dataProvider": r, //if your response is an array of objects, e.g. [{"completedTrip": .., "activeTrip: .., "cancelledTrip": .., "creationDate": ..}, ...]
                "legend": {
                    "horizontalGap": 10,
                    "maxColumns": 1,
                    "position": "right",
                    "useGraphSettings": true,
                    "markerSize": 10
                },
                "valueAxes": [{
                    "gridColor": "#FFFFFF",
                    "gridAlpha": 0.2,
                    "dashLength": 0
    }],
                "gridAboveGraphs": true,
                "startDuration": 1,

                "valueAxes": [{
                    "stackType": "regular",
                    "axisAlpha": 0.3,
                    "gridAlpha": 0,
                    "minimum": 0,
                    "maximum": 50,
                    "gridCount": 1

    }],
                "graphs": [{
                    "balloonText": "<b>[[title]]</b><br><span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>",
                    "fillColors": "#47b012",
                    "lineColor": "#47b012",
                    "fillAlphas": 0.8,
                    "labelText": "[[value]]",
                    "lineAlpha": 0.3,
                    "title": "Completed Rides",
                    "type": "column",
                    "color": "#000000",
                    "valueField": "completedTrip",
                    "fixedColumnWidth": 25
    }, {
                    "balloonText": "<b>[[title]]</b><br><span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>",
                    "fillColors": "#fff138",
                    "lineColor": "#fff138",
                    "fillAlphas": 0.8,
                    "labelText": "[[value]]",
                    "lineAlpha": 0.3,
                    "title": "Not Ended",
                    "type": "column",
                    "color": "#000000",
                    "valueField": "activeTrip",
                    "fixedColumnWidth": 25
    }, {
                    "balloonText": "<b>[[title]]</b><br><span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>",
                    "fillColors": "#dd111b",
                    "lineColor": "#dd111b",
                    "fillAlphas": 0.8,
                    "labelText": "[[value]]",
                    "lineAlpha": 0.3,
                    "title": "Canceled Rides",
                    "type": "column",
                    "color": "#000000",
                    "valueField": "cancelledTrip",
                    "fixedColumnWidth": 25
    }],
                "chartCursor": {
                    "categoryBalloonEnabled": false,
                    "cursorAlpha": 0,
                    "zoomable": false
                },
                "categoryField": "creationDate",
                "categoryAxis": {
                    "gridPosition": "start",
                    "gridAlpha": 0,
                    "tickPosition": "start",
                    "tickLength": 20,
                    "labelRotation": 60
                }
            });