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Question

如果代码或数据本身存在问题，需要一些帮助。虽然我怀疑它与代码，因为我试图验证我收到的JSON数据，它已正确格式化...

这是我的JSON数据

{"view":"cities","model":{"top10Cities":[{"id":1024,"name":"Mumbai (Bombay)","countrycode":"IND","district":"Maharashtra","population":"10500000"},{"id":2331,"name":"Seoul","countrycode":"KOR","district":"Seoul","population":"9981619"},{"id":206,"name":"São Paulo","countrycode":"BRA","district":"São Paulo","population":"9968485"},{"id":1890,"name":"Shanghai","countrycode":"CHN","district":"Shanghai","population":"9696300"},{"id":939,"name":"Jakarta","countrycode":"IDN","district":"Jakarta Raya","population":"9604900"},{"id":2822,"name":"Karachi","countrycode":"PAK","district":"Sindh","population":"9269265"},{"id":3357,"name":"Istanbul","countrycode":"TUR","district":"Istanbul","population":"8787958"},{"id":2515,"name":"Ciudad de México","countrycode":"MEX","district":"Distrito Federal","population":"8591309"},{"id":3580,"name":"Moscow","countrycode":"RUS","district":"Moscow (City)","population":"8389200"},{"id":3793,"name":"New York","countrycode":"USA","district":"New York","population":"8008278"}],"fusionCharts":{"chart":"{\"showValues\":\"0\",\"caption\":\"Cities by Country Code\",\"theme\":\"zune\"}","data":"[{\"label\":\"Mumbai (Bombay)\",\"value\":\"10500000\"},{\"label\":\"Seoul\",\"value\":\"9981619\"},{\"label\":\"São Paulo\",\"value\":\"9968485\"},{\"label\":\"Shanghai\",\"value\":\"9696300\"},{\"label\":\"Jakarta\",\"value\":\"9604900\"},{\"label\":\"Karachi\",\"value\":\"9269265\"},{\"label\":\"Istanbul\",\"value\":\"8787958\"},{\"label\":\"Ciudad de México\",\"value\":\"8591309\"},{\"label\":\"Moscow\",\"value\":\"8389200\"},{\"label\":\"New York\",\"value\":\"8008278\"}]"}},"cleared":false}

以下是我用来接收JSON数据的代码

$(document).ready( function () {

    var jsonD = $.getJSON("http://localhost:8080/v1/cityData", function ( data ) {
        console.log("Success "+ data.toString());
        alert(data);

        $("#fChart").insertFusionCharts({
            type: "column2d",
            width: "450",
            height: "250",
            dateFormat: "JSONURL",
            dataSource: data
        });
    })

});

我尝试了article上提到的提示，但它仍无效。关于如何解决这个问题的任何建议？感谢

更新2

Nisanth建议的修改后的jquery代码，但图表库仍然不能正常工作。它说无效数据，也许这是融合图表库本身的一个问题？

    $(document).ready( function () {

var jsonD = {};

        $.getJSON("http://localhost:8080/v1/cityData", function ( data ) {

            console.log("Success ");
            alert(data);
            jsonD = data;

        }).done( function () {

            var fcData = JSON.stringify(jsonD);
            console.log("fcData: "+fcData);
            $("#fChart").insertFusionCharts({
                type: "column2d",
                width: "450",
                height: "250",
                dateFormat: "JSON",
                dataSource: fcData
            });
        });     
    });

代码工作正常我在.done函数中添加了一个日志，它显示了fcData的值，见下文。

更改了fcData = jsonD.model.fusionCharts并收到以下错误。

Uncaught TypeError: b.match is not a function
    at Fb (fusioncharts.js:214)
    at constructor._drawCategory (fusioncharts.js:1263)
    at constructor._drawComponents (fusioncharts.js:1223)
    at constructor.draw (fusioncharts.js:1220)
    at k._drawAxis (fusioncharts.js:981)
    at k._updateVisuals (fusioncharts.js:976)
    at k.draw (fusioncharts.js:979)
    at k.init (fusioncharts.js:946)
    at Object.m.createChart (fusioncharts.js:875)
    at n.core.render (fusioncharts.js:1801)

更新3

代码更新

    }).done( function () {          
        var cfChart= jsonD.model.fusionCharts.chart;
        var cfData= jsonD.model.fusionCharts.chart;
        $("#fChart").insertFusionCharts({
             type: "column2d",
             width: "450",
             height: "250",
             dateFormat: "JSON",
            dataSource: {chart:cfChart,data:cfData}
         });
    });     
});

错误记录

Uncaught TypeError: b.match is not a function
    at Fb (fusioncharts.js:214)
    at constructor._drawCategory (fusioncharts.js:1263)
    at constructor._drawComponents (fusioncharts.js:1223)
    at constructor.draw (fusioncharts.js:1220)
    at k._drawAxis (fusioncharts.js:981)
    at k._updateVisuals (fusioncharts.js:976)
    at k.draw (fusioncharts.js:979)
    at k.init (fusioncharts.js:946)
    at Object.m.createChart (fusioncharts.js:875)
    at n.core.render (fusioncharts.js:1801)

工作代码

$(document).ready( function () {

    var jsonD = {};

    $.getJSON("http://localhost:8080/v1/cityData", function ( data ) {

        console.log("Success ");
        //alert(data);
        jsonD = data;

    }).done( function () {

        var cfChart= JSON.parse(jsonD.model.fusionCharts.chart);
        var cfData= JSON.parse(jsonD.model.fusionCharts.data);
        $("#fChart").insertFusionCharts({
             type: "column2d",
             width: "450",
             height: "250",
             dateFormat: "JSON",
            dataSource: {chart:cfChart,data:cfData}
         });
    });     
});

Answer 1

与评论中提到的@nnnnnn一样...... $.getJSON不会返回json。它总是返回Deferred Object。

如果您想使用data $.getJSON成功功能，您可以这样做：

//declaring in global scope
var jsonD={};
$.getJSON("http://localhost:8080/v1/cityData", function ( data ) {
    console.log("Success");
    alert(data);
    //changing the value in local scope
    jsonD = data;
}).done(function(){
        var fcData = jsonD.model.fusionCharts;
        $("#fChart").insertFusionCharts({
             type: "column2d",
             width: "450",
             height: "250",
             dateFormat: "JSON",
            dataSource: fcData
         });
 })

<强> 修改

检查json数据后，我发现数据未正确提取。 FusionCharts期望JSON数据具有chart和data个键。此数据显示在JSON data.model.fusionCharts内string

因此，您必须首先extract然后将其解析为json，然后将其提供给dataSource。

所以，你实际的fusionChart设置会是这样的：

.done(function(){
            var cfChart= JSON.parse(jsonD.model.fusionCharts.chart);
            var cfData= JSON.parse(jsonD.model.fusionCharts.data);
            $("#fChart").insertFusionCharts({
                 type: "column2d",
                 width: "450",
                 height: "250",
                 dateFormat: "JSON",
                dataSource: {chart:cfChart,data:cfData}
             });
     })

使用parseJSON解析JSON字符串时出错

更新2

更新3

工作代码

1 个答案: