我试图显示两点之间的距离。但我面临此错误方向请求因未找到而失败。我用谷歌搜索但没有找到解决方案。请查看我的代码并告诉我我是否做错了。
function initAutocomplete() {
var markerArray = [];
// Instantiate a directions service.
var directionsService = new google.maps.DirectionsService;
// Create a map and center it on Manhattan.
var map = new google.maps.Map(document.getElementById('map-canvas'), {
zoom: 13,
center: {lat: 40.771, lng: -73.974}
});
// Create a renderer for directions and bind it to the map.
var directionsDisplay = new google.maps.DirectionsRenderer({map: map});
// Instantiate an info window to hold step text.
var stepDisplay = new google.maps.InfoWindow;
// Display the route between the initial start and end selections.
calculateAndDisplayRoute(
directionsDisplay, directionsService, markerArray, stepDisplay, map);
// Listen to change events from the start and end lists.
var onChangeHandler = function() {
calculateAndDisplayRoute(
directionsDisplay, directionsService, markerArray, stepDisplay, map);
};
document.getElementById('start').addEventListener('change', onChangeHandler);
document.getElementById('end').addEventListener('change', onChangeHandler);
}
function calculateAndDisplayRoute(directionsDisplay, directionsService,
markerArray, stepDisplay, map) {
// First, remove any existing markers from the map.
for (var i = 0; i < markerArray.length; i++) {
markerArray[i].setMap(null);
}
// Retrieve the start and end locations and create a DirectionsRequest using
// WALKING directions.
directionsService.route({
origin: document.getElementById('start').value,
destination: document.getElementById('end').value,
travelMode: google.maps.TravelMode.WALKING
}, function(response, status) {
// Route the directions and pass the response to a function to create
// markers for each step.
if (status === google.maps.DirectionsStatus.OK) {
document.getElementById('warnings-panel').innerHTML =
'<b>' + response.routes[0].warnings + '</b>';
directionsDisplay.setDirections(response);
showSteps(response, markerArray, stepDisplay, map);
} else {
window.alert('Directions request failed due to ' + status);
}
});
}
function showSteps(directionResult, markerArray, stepDisplay, map) {
// For each step, place a marker, and add the text to the marker's infowindow.
// Also attach the marker to an array so we can keep track of it and remove it
// when calculating new routes.
var myRoute = directionResult.routes[0].legs[0];
for (var i = 0; i < myRoute.steps.length; i++) {
var marker = markerArray[i] = markerArray[i] || new google.maps.Marker;
marker.setMap(map);
marker.setPosition(myRoute.steps[i].start_location);
attachInstructionText(
stepDisplay, marker, myRoute.steps[i].instructions, map);
}
}
function attachInstructionText(stepDisplay, marker, text, map) {
google.maps.event.addListener(marker, 'click', function() {
// Open an info window when the marker is clicked on, containing the text
// of the step.
stepDisplay.setContent(text);
stepDisplay.open(map, marker);
});
}
Html方面:
<input id="start" class="controls" type="text"
placeholder="picup lock">
<input id="end" class="controls" type="text"
placeholder="drop off">
答案 0 :(得分:0)
根据此documentation,错误 NOT_FOUND 表示请求的来源,目的地或航点中指定的至少一个位置无法进行地理编码。
确保point1和point3不为空。 API不知道如何从&#34;&#34;创建路线。到&#34;&#34;。
答案 1 :(得分:0)
我昨天通过C#httpClient使用API遇到了同样的问题。但是相同的请求在浏览器中也可以正常工作。经过一番调试后,我发现只有在httpClient中发送了Accept-Language标头时,它才起作用...