Leaflet中使用Leaflet.Spin插件实现地图加载等待效果

拼搏现实的明天。 2023-10-01 12:33 36阅读 0赞

## 场景 ##

Leaflet快速入门与加载OSM显示地图：

[Leaflet快速入门与加载OSM显示地图\_BADAO\_LIUMANG\_QIZHI的博客-CSDN博客][Leaflet_OSM_BADAO_LIUMANG_QIZHI_-CSDN]

在上面的基础上，怎样使用插件实现地图加载等待效果如下

![ad4b672efc984ee99aa3d1be4c0e7d18.gif][]

注：

博客：  
[BADAO\_LIUMANG\_QIZHI的博客\_霸道流氓气质\_CSDN博客-C\#,SpringBoot,架构之路领域博主][BADAO_LIUMANG_QIZHI_CSDN_-C_SpringBoot]  
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## 实现 ##

1、插件地址

[GitHub - makinacorpus/Leaflet.Spin: Show a spinner on the map using Spin.js][GitHub - makinacorpus_Leaflet.Spin_ Show a spinner on the map using Spin.js]

2、下载源码，引入插件所需要的spin.js和leaflet.spin.min.js

![watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA6Zy46YGT5rWB5rCT5rCU6LSo_size_20_color_FFFFFF_t_70_g_se_x_16][]

3、添加地图区域GeoJson数据

var campus = {
                type: "Feature",
                properties: {
                    popupContent: "This is the Auraria West Campus",
                    style: {
                        weight: 2,
                        color: "#999",
                        opacity: 1,
                        fillColor: "#B0DE5C",
                        fillOpacity: .8
                    }
                },
                geometry: {
                    type: "MultiPolygon",
                    coordinates: [
                        [
                            [
                                [-105.00432014465332, 39.74732195489861],
                                [-105.00715255737305, 39.7462000683517],
                                [-105.00921249389647, 39.74468219277038],
                                [-105.01067161560059, 39.74362625960105],
                                [-105.01195907592773, 39.74290029616054],
                                [-105.00989913940431, 39.74078835902781],
                                [-105.00758171081543, 39.74059036160317],
                                [-105.00346183776855, 39.74059036160317],
                                [-105.00097274780272, 39.74059036160317],
                                [-105.00062942504881, 39.74072235994946],
                                [-105.00020027160645, 39.74191033368865],
                                [-105.0007152557373, 39.74276830198601],
                                [-105.00097274780272, 39.74369225589818],
                                [-105.00097274780272, 39.74461619742136],
                                [-105.00123023986816, 39.74534214278395],
                                [-105.00183105468751, 39.74613407445653],
                                [-105.00432014465332, 39.74732195489861]
                            ],
                            [
                                [-105.00361204147337, 39.74354376414072],
                                [-105.00301122665405, 39.74278480127163],
                                [-105.00221729278564, 39.74316428375108],
                                [-105.00283956527711, 39.74390674342741],
                                [-105.00361204147337, 39.74354376414072]
                            ]
                        ],
                        [
                            [
                                [-105.00942707061768, 39.73989736613708],
                                [-105.00942707061768, 39.73910536278566],
                                [-105.00685214996338, 39.73923736397631],
                                [-105.00384807586671, 39.73910536278566],
                                [-105.00174522399902, 39.73903936209552],
                                [-105.00041484832764, 39.73910536278566],
                                [-105.00041484832764, 39.73979836621592],
                                [-105.00535011291504, 39.73986436617916],
                                [-105.00942707061768, 39.73989736613708]
                            ]
                        ]
                    ]
                }
            };

4、模拟ajax请求后台数据，这里是5秒，map.spin(true)则显示加载效果，为false则不显示加载效果

var layer = L.geoJson().addTo(map);
            //设置为true则显示加载效果
            map.spin(true);
            // Simulate AJAX
            //模拟ajax请求数据，5秒返回数据
            setTimeout(function () {
                layer.addData(campus);
                //设置为false则不显示加载效果
                map.spin(false);
            }, 5000);

5、完整示例代码

<!doctype html>
    <html lang="en">
    
    <head>
        <meta charset="UTF-8">
        <title>leaflet实现地图加载等待效果</title>
        <link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css" />
        <style>
            html,
            body,
            #map {
                padding: 0;
                margin: 0;
                width: 100%;
                height: 100%;
                overflow: hidden;
            }
        </style>
    </head>
    
    <body>
        <div id="map"></div>
        <script type="text/javascript" src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"></script>
        <script type="text/javascript" src="./js/spin.js"></script>
        <script type="text/javascript" src="./js/leaflet.spin.min.js"></script>
        <script type="text/javascript">
            var map = L.map('map').setView([39.743855, -104.998158], 13);
            L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
                attribution: ''
            }).addTo(map);
    
            var campus = {
                type: "Feature",
                properties: {
                    popupContent: "This is the Auraria West Campus",
                    style: {
                        weight: 2,
                        color: "#999",
                        opacity: 1,
                        fillColor: "#B0DE5C",
                        fillOpacity: .8
                    }
                },
                geometry: {
                    type: "MultiPolygon",
                    coordinates: [
                        [
                            [
                                [-105.00432014465332, 39.74732195489861],
                                [-105.00715255737305, 39.7462000683517],
                                [-105.00921249389647, 39.74468219277038],
                                [-105.01067161560059, 39.74362625960105],
                                [-105.01195907592773, 39.74290029616054],
                                [-105.00989913940431, 39.74078835902781],
                                [-105.00758171081543, 39.74059036160317],
                                [-105.00346183776855, 39.74059036160317],
                                [-105.00097274780272, 39.74059036160317],
                                [-105.00062942504881, 39.74072235994946],
                                [-105.00020027160645, 39.74191033368865],
                                [-105.0007152557373, 39.74276830198601],
                                [-105.00097274780272, 39.74369225589818],
                                [-105.00097274780272, 39.74461619742136],
                                [-105.00123023986816, 39.74534214278395],
                                [-105.00183105468751, 39.74613407445653],
                                [-105.00432014465332, 39.74732195489861]
                            ],
                            [
                                [-105.00361204147337, 39.74354376414072],
                                [-105.00301122665405, 39.74278480127163],
                                [-105.00221729278564, 39.74316428375108],
                                [-105.00283956527711, 39.74390674342741],
                                [-105.00361204147337, 39.74354376414072]
                            ]
                        ],
                        [
                            [
                                [-105.00942707061768, 39.73989736613708],
                                [-105.00942707061768, 39.73910536278566],
                                [-105.00685214996338, 39.73923736397631],
                                [-105.00384807586671, 39.73910536278566],
                                [-105.00174522399902, 39.73903936209552],
                                [-105.00041484832764, 39.73910536278566],
                                [-105.00041484832764, 39.73979836621592],
                                [-105.00535011291504, 39.73986436617916],
                                [-105.00942707061768, 39.73989736613708]
                            ]
                        ]
                    ]
                }
            };
           
            var layer = L.geoJson().addTo(map);
            //设置为true则显示加载效果
            map.spin(true);
            // Simulate AJAX
            //模拟ajax请求数据，5秒返回数据
            setTimeout(function () {
                layer.addData(campus);
                //设置为false则不显示加载效果
                map.spin(false);
            }, 5000);
    
        </script>
    </body>
    
    </html>

[Leaflet_OSM_BADAO_LIUMANG_QIZHI_-CSDN]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/122290880
[ad4b672efc984ee99aa3d1be4c0e7d18.gif]: https://img-blog.csdnimg.cn/ad4b672efc984ee99aa3d1be4c0e7d18.gif
[BADAO_LIUMANG_QIZHI_CSDN_-C_SpringBoot]: https://blog.csdn.net/badao_liumang_qizhi
[GitHub - makinacorpus_Leaflet.Spin_ Show a spinner on the map using Spin.js]: https://github.com/makinacorpus/Leaflet.Spin
[watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA6Zy46YGT5rWB5rCT5rCU6LSo_size_20_color_FFFFFF_t_70_g_se_x_16]: https://img-blog.csdnimg.cn/c8620eba0cea4a60bbf71e4a7177844d.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBA6Zy46YGT5rWB5rCT5rCU6LSo,size_20,color_FFFFFF,t_70,g_se,x_16