以下是我通过网址(http://localhost:3000/data)
获取的JSON数据 [{"emp_id":5,"emp_city":"Hyderabad","emp_name":"Sam","emp_phone":"9999999999","emp_sal":"406000"},{"emp_id":1,"emp_city":"Hyderabad","emp_name":"ram","emp_phone":"9999999999","emp_sal":"50000"},{"emp_id":2,"emp_city":"Hyderabad","emp_name":"robin","emp_phone":"9999999999","emp_sal":"406000"},{"emp_id":4,"emp_city":"Hyderabad","emp_name":"krish","emp_phone":"9999999999","emp_sal":"406000"},{"emp_id":6,"emp_city":"Banglore","emp_name":"Bobby","emp_phone":"9999999999","emp_sal":"516000"},{"emp_id":3,"emp_city":"Chennai","emp_name":"rahman","emp_phone":"9999999999","emp_sal":"45000"}]
下面是我试图从JSON上面将数据推送到表的jquery脚本
(function() {
// Create the connector object
var myConnector = tableau.makeConnector();
// Define the schema
myConnector.getSchema = function(schemaCallback) {
var cols = [{
id: "emp_id",
dataType: tableau.dataTypeEnum.int
}, {
id: "emp_city",
dataType: tableau.dataTypeEnum.string
}, {
id: "emp_name",
dataType: tableau.dataTypeEnum.string
}];
var tableSchema = {
id: "emp",
alias:"test",
columns: cols
};
schemaCallback([tableSchema]);
};
// Download the data
myConnector.getData = function(table, doneCallback) {
$.getJSON("http://localhost:3000/data", function(resp) {
var feat = resp.features,
tableData = [];
// Iterate over the JSON object
for (var i = 0, len = feat.length; i < len; i++) {
tableData.push({
"emp_id": feat[i].emp_id,
"emp_city": feat[i].emp_city,
"emp_name": feat[i].emp_name,
});
}
table.appendRows(tableData);
doneCallback();
});
};
tableau.registerConnector(myConnector);
// Create event listeners for when the user submits the form
$(document).ready(function() {
$("#submitButton").click(function() {
tableau.connectionName = "Employee Details"; // This will be the data source name in Tableau
tableau.submit(); // This sends the connector object to Tableau
});
});
})();
以下是我得到的错误 WDC报告了一个错误: 未捕获的TypeError:无法读取未定义堆栈的属性“length”:TypeError: 无法在Object.success中读取未定义的属性“长度” (http://localhost:8888/Examples/js/earthquakeUSGS.js:34:39)j
请帮忙解决。
答案 0 :(得分:0)
下面:
var feat = resp.features,
tableData = [];
没有features
属性。