【发布时间】：2017-08-27 20:27:55
【问题描述】：
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有关，因为我试图验证收到的 JSON 数据格式是否正确......
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}
这是我用来接收 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 中所述的提示，但仍然无法正常工作。关于如何解决这个问题的任何建议？谢谢
更新 2
按照 Nisanth 的建议修改了 jquery 代码，但图表库仍然无法正常工作。它说无效数据，也许这是融合图表库本身的问题？
$(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
});
});
});
代码运行良好，我在 .done 函数中添加了一个日志，它显示了 fcData 的值，如下所示。
更改 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}
});
});
});
错误日志
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}
});
});
});
【问题讨论】：
-
$.getJSON()函数不返回 JSON 字符串，它在data参数中将其传递给您的回调函数。从$.getJSON()回调中调用.insertFusioncharts()，使用data- 注意jQuery 已经为你解析了JSON。 -
@nnnnnnn 在将它移入 $.getJSON 检查我的更新后，我仍然收到相同的消息“[object Object]”。
-
@dimas 您没有将 json 转换为字符串。做：
var fcData = JSON.stringify(jsonD); -
"[object Object]"是我在控制台上调用.toString()时希望看到的（使用console.log(data)代替），但实际图表是否有效？我不熟悉该图表工具，但我使用的其他图表库期望数据作为数组/对象，而不是 JSON 字符串，并且data在 jQuery 自动解析您的 JSON 之后已经是一个对象. -
@nishanth 和 nnnnnn 我只是在尝试看看它是否有效。无论如何，我尝试了您建议的代码，但图表仍然无法正常工作。我正在使用 fusioncharts 库。它说无效数据，也许这是库本身的问题？
标签： javascript jquery fusioncharts