我目前在this site，展示了如何使用bing map api实现业务搜索。但我想要实现的是，首先地图应该获取您当前的位置并搜索附近的商业类型，比如餐厅或支票兑现处。 My current page当前位置有效，但现在我如何使用我的页面实现FindNearBy函数？
P.S。我希望搜索已经为用户进行而无需输入搜索文本，因此地图应该加载当前位置，并且旁边应该列出所有或可能是附近最近的5家餐馆。
答案 0 :(得分：1)
不使用Bing地图......您需要Bing Phonebook API才能执行此操作。
我可以让你在那里的一部分。下面的例子结合了Bing Maps API和Bing Phonebook API的使用）我刚刚提交了一个关于如何找到业务类型的类似问题，但是......我不确定是否有办法做到这一点：/（下面的示例搜索该区域内的所有星巴克...当然，需要进行一些HTML集成。
var _map;
var _appId;
$(document).ready(function () {
if (Modernizr.geolocation) {
$(".geofallback").hide();
}
else {
$(".geofallback").show();
}
$.post("Home/GetBingMapsKey", { "func": "GetBingMapsKey" }, function (data) {
// Create a Bing map
_map = new Microsoft.Maps.Map(document.getElementById("map"),
{ credentials: data }); //, mapTypeId: Microsoft.Maps.MapTypeId.ordnanceSurvey
});
// Get the current position from the browser
if (!navigator.geolocation) {
$("#results").html("This browser doesn't support geolocation, please enter an address");
}
else {
$.post("Home/GetBingKey", { "func": "GetBingKey" }, function (data) {
_appId = data;
});
navigator.geolocation.getCurrentPosition(onPositionReady, onError);
navigator.geolocation.getCurrentPosition(Search, onError);
}
});
function onPositionReady(position) {
// Apply the position to the map
var location = new Microsoft.Maps.Location(position.coords.latitude,
position.coords.longitude);
_map.setView({ zoom: 18, center: location });
// Add a pushpin to the map representing the current location
var pin = new Microsoft.Maps.Pushpin(location);
_map.entities.push(pin);
}
function onError(err) {
switch (err.code) {
case 0:
alert("Unknown error :(");
break;
case 1:
alert("Location services are unavailable per your request.");
break;
case 2:
alert("Location data is unavailable.");
break;
case 3:
alert("The location request has timed out. Please contact support if you continue to experience issues.");
break;
}
}
function Search(position) {
// note a bunch of this code uses the example code from
// Microsoft for the Phonebook API
var requestStr = "http://api.bing.net/json.aspx?"
// Common request fields (required)
+ "AppId=" + _appId
+ "&Query=starbucks"
+ "&Sources=Phonebook"
// Common request fields (optional)
+ "&Version=2.2"
+ "&Market=en-us"
+ "&UILanguage=en"
+ "&Latitude=" + position.coords.latitude
+ "&Longitude=" + position.coords.longitude
+ "&Radius=100.0"
+ "&Options=EnableHighlighting"
// Phonebook-specific request fields (optional)
// Phonebook.Count max val is 25
+ "&Phonebook.Count=25"
+ "&Phonebook.Offset=0"
// YP = Commercial Entity, WP = Residential
+ "&Phonebook.FileType=YP"
+ "&Phonebook.SortBy=Distance"
// JSON-specific request fields (optional)
+ "&JsonType=callback"
+ "&JsonCallback=?";
$.getJSON(requestStr, function (data) {
SearchCompleted(data);
});
}
function FormatBingQuery(appId, latitude ) {
}
function SearchCompleted(response) {
var errors = response.SearchResponse.Errors;
if (errors != null) {
// There are errors in the response. Display error details.
DisplayErrors(errors);
}
else {
// There were no errors in the response. Display the
// Phonebook results.
DisplayResults(response);
}
}
function DisplayResults(response) {
var output = document.getElementById("output");
var resultsHeader = document.createElement("h4");
var resultsList = document.createElement("ul");
output.appendChild(resultsHeader);
output.appendChild(resultsList);
var results = response.SearchResponse.Phonebook.Results;
// Display the results header.
resultsHeader.innerHTML = "Bing API Version "
+ response.SearchResponse.Version
+ "<br />Phonebook results for "
+ response.SearchResponse.Query.SearchTerms
+ "<br />Displaying "
+ (response.SearchResponse.Phonebook.Offset + 1)
+ " to "
+ (response.SearchResponse.Phonebook.Offset + results.length)
+ " of "
+ response.SearchResponse.Phonebook.Total
+ " results<br />";
// Display the Phonebook results.
var resultsListItem = null;
var resultStr = "";
for (var i = 0; i < results.length; ++i) {
resultsListItem = document.createElement("li");
resultsList.appendChild(resultsListItem);
//loc is specific to my C# object
var loc = new Array();
loc[0] = results[i].Longitude;
loc[1] = results[i].Latitude;
var address = {
AddressLine1: results[i].Address,
City: results[i].City,
State: results[i].StateOrProvince,
PostalCode: results[i].PostalCode,
Latitude: results[i].Latitude,
Longitude: results[i].Longitude,
Country: results[i].CountryOrRegion,
ID: results[i].UniqueId
};
//this part is specific to my project to return the
//address results so I can store them (since my
//implementation is a demonstration of how to
//use the MongoDB geoNear() functionality
$.ajax({
url: "/Home/AddAddressToCollection",
type: 'post',
data: JSON.stringify(address),
contentType: 'application/json',
dataType: 'json'
});
resultStr = results[i].Business
+ "<br />"
+ results[i].Address
+ "<br />"
+ results[i].City
+ ", "
+ results[i].StateOrProvince
+ "<br />"
+ results[i].PhoneNumber
+ "<br />Average Rating: "
+ results[i].UserRating
+ "<br /><br />";
// Replace highlighting characters with strong tags.
resultsListItem.innerHTML = ReplaceHighlightingCharacters(
resultStr,
"<strong>",
"</strong>");
}
}
function ReplaceHighlightingCharacters(text, beginStr, endStr) {
// Replace all occurrences of U+E000 (begin highlighting) with
// beginStr. Replace all occurrences of U+E001 (end highlighting)
// with endStr.
var regexBegin = new RegExp("\uE000", "g");
var regexEnd = new RegExp("\uE001", "g");
return text.replace(regexBegin, beginStr).replace(regexEnd, endStr);
}
function DisplayErrors(errors) {
var output = document.getElementById("output");
var errorsHeader = document.createElement("h4");
var errorsList = document.createElement("ul");
output.appendChild(errorsHeader);
output.appendChild(errorsList);
// Iterate over the list of errors and display error details.
errorsHeader.innerHTML = "Errors:";
var errorsListItem = null;
for (var i = 0; i < errors.length; ++i) {
errorsListItem = document.createElement("li");
errorsList.appendChild(errorsListItem);
errorsListItem.innerHTML = "";
for (var errorDetail in errors[i]) {
errorsListItem.innerHTML += errorDetail
+ ": "
+ errors[i][errorDetail]
+ "<br />";
}
errorsListItem.innerHTML += "<br />";
}
}
// Bonus: In case you want to provide directions
// for how to get to a selected entity
// _map.getCredentials(function (credentials) {
// $.getJSON('http://dev.virtualearth.net/REST/V1/Routes/driving?' + 'wp.0=' + lat1 + ',' + lon1 + '&wp.1=' + lat2 + ',' + lon2 + '&distanceUnit=mi&optmz=distance&key=' + credentials + '&jsonp=?&s=1',
// function (result) {
// if (result.resourceSets[0].estimatedTotal > 0) {
// var distance = result.resourceSets[0].resources[0].travelDistance;
// }
// else {
// $("#results").html("Oops! It appears one or more of the addresses you entered are incorrect. :( ");
// }
// });
// });
//Tie into a function that shows an input field
//for use as a fallback in case cannot use HTML5 geoLocation
//$(document).ready(function () {
// $("#btnFindLocation").click(function () {
// //check user has entered something first
// if ($("#txtAddress").val().length > 0) {
// //send location query to bing maps REST api
// _map.getCredentials(function (credentials) {
// $.getJSON('http://dev.virtualearth.net/REST/v1/Locations?query=' + $("#txtAddress").val() + '&key=' + credentials + '&jsonp=?&s=1',
// function (result) {
// if (result.resourceSets[0].estimatedTotal > 0) {
// var loc = result.resourceSets[0].resources[0].point.coordinates;
// $("#lat").val(loc[0]);
// $("#lon").val(loc[1]);
// var location = new Microsoft.Maps.Location(loc[0],
// loc[1]);
// _map.setView({ zoom: 18, center: location });
// // Add a pushpin to the map representing the current location
// var pin = new Microsoft.Maps.Pushpin(location);
// _map.entities.push(pin);
// }
// else {
// $("#results").html("sorry that address cannot be found");
// }
// });
// });
// }
// else {
// $("#results").html("please enter an address");
// }
// });
//});