我正在尝试将我的第二个查询设置为 angular 和 nodejs 中的饼图数据源，使用多个查询同时获取结果有人有一些想法来解决它。
服务器端
var url = require('url');
//Require express,
var express = require('express');
//and create an app
var app = express();
var mysql = require('mysql');
var connection = mysql.createConnection({
multipleStatements: true,
host: 'localhost',
user: 'hello',
password: 'passw',
database: 'db',
port: 330333
});
//var connection = mysql.createConnection({multipleStatements: true});
app.get('/home', function (req, res) {
res.send('Hello World!');
});
app.get('/sts', function (req, res) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Credentials", true);
res.header("Access-Control-Allow-Headers",
"Origin, X-Requested-With, Content-Type, Accept");
// res.header('Access-Control-Allow-Methods', 'POST, \n\
// GET, PUT, DELETE, OPTIONS');
connection.query(
" SELECT ST.manufacturer, ST.name, ST.model, ST.os, ST.status, " +
" SI.Coord, ST.Last_Update_Date_Time FROM " +
" ( " +
" select s.manufacturer, s.name, s.model, s.os, s. status, " +
" concat(DATE(s.last_update_date),' ',TIME(s.last_update_time)) as Last_Update_Date_Time " +
" from sts s " +
" order by Last_Update_Date_Time DESC " +
" ) AS ST JOIN " +
" ( " +
" select DISTINCT CONCAT(si.latitude, ', ', si.longitude) as Coord, " +
" concat(DATE(update_date),' ',TIME(update_time)) as Update_Date_Time " +
" from sts_info si " +
" order by Update_Date_Time DESC " +
" ) AS SI ON ST.Last_Update_Date_Time = SI.Update_Date_Time; " +
" " +
" \n\ " +
" SELECT ST.manufacturer, ST.name, ST.model, ST.os, ST.status, " +
" count(status) as CountStatus, " +
" SI.Coord, ST.Last_Update_Date_Time FROM " +
" ( " +
" select s.manufacturer, s.name, s.model, s.os, s. status, " +
" concat(DATE(s.last_update_date),' ',TIME(s.last_update_time)) as Last_Update_Date_Time " +
" from sts s " +
" order by Last_Update_Date_Time DESC " +
" ) AS ST JOIN " +
" ( " +
" select DISTINCT CONCAT(si.latitude, ', ', si.longitude) as Coord, " +
" concat(DATE(update_date),' ',TIME(update_time)) as Update_Date_Time " +
" from sts_info si " +
" order by Update_Date_Time DESC " +
" ) AS SI ON ST.Last_Update_Date_Time = SI.Update_Date_Time " +
" group by status; "
, function (err, rows) {
if (!err) {
console.log("Database is connected... \n");
console.log('The solution is: ', rows[0]);
console.log('The solution is: ', rows[1]);
} else {
console.log("Error connecting database... \n");
console.log('Error while performing Query.');
}
console.log(rows[0]);
console.log(rows[1]);
res.end(JSON.stringify(rows[0]));
res.end(JSON.stringify(rows[1]));
});
});
var server = app.listen(8000, function () {
var port = server.address().port;
var host = server.address().address;
console.log('Example app listening at http://' + host + ':' + port);
});
AngularJs
**$scope.chartOpt1 = {
bindingOptions: {
dataSource: "sts"
},**
//Exposes the current URL in the browser address bar
//Maintains synchronization between itself and the browser's URL
//Represents the URL object as a set of methods
myApp.config(function ($routeProvider) {
$routeProvider
// route for the home page
.when('/', {
templateUrl: 'pages/home.html',
controller: 'mainController'
})
// route for the about page
.when('/about', {
templateUrl: 'pages/about.html',
controller: 'aboutController'
})
// route for the contact page
.when('/contact', {
templateUrl: 'pages/contact.html',
controller: 'contactController'
})
.when('/devicessts', {
templateUrl: 'pages/devicessts.html',
controller: 'devicesController'
})
.when('/sts', {
templateUrl: 'pages/sts.html',
controller: 'stsController'
});
// $locationProvider.html5Mode(true);
});
页面结果：
查看数据网格和饼图未显示在页面中。
如何从查询中检索结果到角度？
谢谢