Question

帮助使用Boost库解析xml。

我想使用boost获取父节点中的所有子节点。以下是我的xml文件：

<?xml version="1.0" encoding="utf-8"?>
<info>
  <books>
    <book>"Hello"</book>
    <book>"World"</book>
  </books>
</info>

我需要获取图书的名称（"Hello"，"World"）。

如何使用boost库来完成这项工作？

Answer 1

您可以使用Boost Property Tree：

    // This example requires the Places library. Include the libraries=places
    // parameter when you first load the API. For example:
    // <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=places">

    function initAutocomplete() {
        var map = new google.maps.Map(document.getElementById('map'), {
            center: { lat: 15.362813, lng: 75.126129 },
            zoom: 15,
            mapTypeId: google.maps.MapTypeId.ROADMAP
        });

        // Create the search box and link it to the UI element.
        var input = document.getElementById('pacinput');
        var searchBox = new google.maps.places.SearchBox(input);

        // Bias the SearchBox results towards current map's viewport.
        map.addListener('bounds_changed', function () {
            searchBox.setBounds(map.getBounds());
        });

        var markers = [];
        // Listen for the event fired when the user selects a prediction and retrieve
        // more details for that place.
        searchBox.addListener('places_changed', function () {
            var places = searchBox.getPlaces();

            if (places.length == 0) {
                return;
            }

            // Clear out the old markers.
            markers.forEach(function (marker) {
                marker.setMap(null);
            });
            markers = [];

            // For each place, get the icon, name and location.
            var bounds = new google.maps.LatLngBounds();
            places.forEach(function (place) {
                var icon = {
                    url: place.icon,
                    size: new google.maps.Size(71, 71),
                    origin: new google.maps.Point(0, 0),
                    anchor: new google.maps.Point(17, 34),
                    scaledSize: new google.maps.Size(25, 25)
                };

                // Create a marker for each place.
                markers.push(new google.maps.Marker({
                    map: map,
                    icon: icon,
                    title: place.name,
                    position: place.geometry.location
                }));

                if (place.geometry.viewport) {
                    // Only geocodes have viewport.
                    bounds.union(place.geometry.viewport);
                } else {
                    bounds.extend(place.geometry.location);
                }
            });
            map.fitBounds(bounds);
        });
    }

</script>

如何获取所有子节点值

1 个答案: