过去三个小时我一直试图将JSON文件读入java脚本，以便我的地图符号可以通过google-maps服务读取。
然而，我有一个不完整的脚本..我无法得到我的结果。这是我的剧本：<script>
function loadJSON(callback) {
var xobj = new XMLHttpRequest();
xobj.overrideMimeType("application/json");
xobj.open('GET', 'http://127.0.0.1/irismaps/aitems.php', true); // path to file
xobj.onreadystatechange = function () {
if (xobj.readyState == 4 && xobj.status == "200") {
// Required use of an anonymous callback as .open will NOT return a value but simply returns undefined in asynchronous mode
callback(xobj.responseText);
}
};
xobj.send(null);
}
function init() {
loadJSON(function(response) {
// Parse JSON string into object
results = JSON.parse(response);
for (var i=0; i<results[0].markers.length; i++) {
for (var b=0;b<results[0].markers[i].length;b++) {
//this is the object you are looking for
console.log(results[0].markers[i]);
break;
}
}
});
}
</script>
JSON：
{
"results": [
{
"markers": [
{
"longitude": "37.66653612499999",
"latitude": "55.77875861131171",
"title": "Industry LLC",
"icon": "img/markers/shop.png"
},
{
"longitude": "-82.28813722500001",
"latitude": "23.10569357133444",
"title": "Garden Care",
"icon": "img/markers/shop.png"
},
{
"longitude": "-4.792105912500006",
"latitude": "37.875266800953554",
"title": "Entertainers",
"icon": "img/markers/shop.png"
},
{
"longitude": "-73.94999999999999",
"latitude": "40.65",
"title": "Educators Corp.",
"icon": "img/markers/shop.png"
},
{
"longitude": "-0.8122895000000199",
"latitude": "52.0443456",
"title": "Rentacar",
"icon": "img/markers/shop.png"
},
{
"longitude": "4.879416200000037",
"latitude": "45.7783975",
"title": "Restaurant Lucia",
"icon": "img/markers/shop.png"
},
{
"longitude": "12.481953799999928",
"latitude": "41.90567180000001",
"title": "The Airport",
"icon": "img/markers/shop.png"
},
{
"longitude": "-74.0059731",
"latitude": "40.7143528",
"title": "Advertising Inc.",
"icon": "img/markers/shop.png"
},
{
"longitude": "12.7880859375",
"latitude": "4.565473550710291",
"title": "Car Repairs",
"icon": "img/markers/shop.png"
},
{
"longitude": "13.447265625",
"latitude": "52.53627304145948",
"title": "Accounting Gmbh.",
"icon": "img/markers/shop.png"
},
{
"longitude": "39.638671875",
"latitude": "24.447149589730845",
"title": "Courier & Courier",
"icon": "img/markers/shop.png"
},
{
"longitude": "10.7666015625",
"latitude": "59.93300042374631",
"title": "Your House A.S.",
"icon": "img/markers/shop.png"
},
{
"longitude": "-1.8896484375",
"latitude": "52.482780222078205",
"title": "M Supermarkets LLC",
"icon": "img/markers/shop.png"
},
{
"longitude": "21.005859375",
"latitude": "52.22779941887071",
"title": "Healthy Runner S.A.",
"icon": "img/markers/shop.png"
},
{
"longitude": "-0.8122895000000199",
"latitude": "52.0443456",
"title": "Rentacar",
"icon": "img/markers/shop.png"
},
{
"longitude": "-0.8122895000000199",
"latitude": "52.0443456",
"title": "Restaurant Lucia",
"icon": "img/markers/shop.png"
},
{
"longitude": "37.6173",
"latitude": "55.755826",
"title": "Industrie LLC",
"icon": "img/markers/shop.png"
},
{
"longitude": "-115.20111025",
"latitude": "55.80752971122906",
"title": "Book Group Inc.",
"icon": "img/markers/shop.png"
}
]
}
]
}
答案 0 :(得分：0)
您尝试加载的JSON文件基本上只是JavaScript。给你的对象一个像
这样的名字var myJSONObject = {
"foo": "bar"
};
将其另存为.js文件并将其加载到您的文档中。
答案 1 :(得分：0)
尝试：
func searchBarSearchButtonClicked(searchBar: UISearchBar) {
searchBar.resignFirstResponder()
// Form the request URL string.
var urlString = "https://www.googleapis.com/youtube/v3/search?part=snippet&fields=items(id,snippet(title,channelTitle,thumbnails))&order=viewCount&q=\(searchBar.text)&type=video&maxResults=25&key=\(apiKey)"
urlString = urlString.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLQueryAllowedCharacterSet())!
// Create a NSURL object based on the above string.
let targetURL = NSURL(string: urlString)
// Get the results.
performGetRequest(targetURL, completion: { (data, HTTPStatusCode, error) -> Void in
if HTTPStatusCode == 200 && error == nil {
// Convert the JSON data to a dictionary object.
let resultsDict = (try! NSJSONSerialization.JSONObjectWithData(data!, options: [])) as! Dictionary<NSObject, AnyObject>
// Get all search result items ("items" array).
let items: Array<Dictionary<NSObject, AnyObject>> = resultsDict["items"] as! Array<Dictionary<NSObject, AnyObject>>
// Loop through all search results and keep just the necessary data.
for var i=0; i<items.count; ++i {
let snippetDict = items[i]["snippet"] as! Dictionary<NSObject, AnyObject>
// let statisticsDict = items[i]["statistics"] as! Dictionary<NSObject, AnyObject>
// Create a new dictionary to store the video details.
var videoDetailsDict = Dictionary<NSObject, AnyObject>()
videoDetailsDict["title"] = snippetDict["title"]
videoDetailsDict["channelTitle"] = snippetDict["channelTitle"]
videoDetailsDict["thumbnail"] = ((snippetDict["thumbnails"] as! Dictionary<NSObject, AnyObject>)["default"] as! Dictionary<NSObject, AnyObject>)["url"]
videoDetailsDict["videoID"] = (items[i]["id"] as! Dictionary<NSObject, AnyObject>)["videoId"]
// videoDetailsDict["viewCount"] = statisticsDict["viewCount"]
self.videosArray.append(videoDetailsDict)
// Reload the tableview.
self.tableView.reloadData()
}
}
else {
print("HTTP Status Code = \(HTTPStatusCode)")
print("Error while loading channel videos: \(error)")
}
})
}
// MARK: Custom method implementation
func performGetRequest(targetURL: NSURL!, completion: (data: NSData?, HTTPStatusCode: Int, error: NSError?) -> Void) {
let request = NSMutableURLRequest(URL: targetURL)
request.HTTPMethod = "GET"
let sessionConfiguration = NSURLSessionConfiguration.defaultSessionConfiguration()
let session = NSURLSession(configuration: sessionConfiguration)
let task = session.dataTaskWithRequest(request, completionHandler: { (data: NSData?, response: NSURLResponse?, error: NSError?) -> Void in
dispatch_async(dispatch_get_main_queue(), { () -> Void in
completion(data: data, HTTPStatusCode: (response as! NSHTTPURLResponse).statusCode, error: error)
})
})
task.resume()
}
您正在将整个文件添加到名为results的对象中，该对象包含一个名为results的数组。