方向 API google - 方向请求因未找到而失败

Posted 2023-03-28

【中文标题】方向 API google - 方向请求因未找到而失败

【英文标题】：Direction API google - direction request failed due to not found

【发布时间】：2016-11-05 18:42:21

【问题描述】：

我试图显示两点之间的距离。但我正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。请看看我的代码，如果我做错了什么，请告诉我。

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 端：

    <input id="start" class="controls" type="text"
    placeholder="picup lock">

    <input id="end" class="controls" type="text"
    placeholder="drop off">

【问题讨论】：

收到ZERO_RESULTS 时，您使用的开始和结束值是什么？请提供一个 Minimal, Complete, Tested and Readable example 来证明错误。

你真的在使用已弃用并关闭的google-maps-api-2吗？

不，它没有关闭并且工作正常

在我看来你实际上是在使用google-maps-api-3，如果是这样，你应该修复你问题上的标签。

【参考方案1】：

根据此documentation，错误 NOT_FOUND 表明请求的起点、目的地或航路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 不知道如何创建从“”到“”的路由。

检查这个相关的ticket和tutorial。

【参考方案2】：

我昨天遇到了同样的问题，通过 C# httpClient 使用 API。但同样的请求在浏览器中运行良好。经过一番调试，我发现只有在 httpClient 中发送 Accept-Language 标头才有效……