java实现用shp与vue显示路网
时间: 2023-05-29 10:01:19 浏览: 156
Java可以使用开源库GeoTools读取shp文件,并将其中的地图数据转换为GeoJSON格式,然后将转换后的数据传递给Vue前端进行显示。具体步骤如下:
1. 使用GeoTools读取shp文件并转换为GeoJSON格式:
```java
File file = new File("/path/to/shapefile.shp");
Map<String, Object> params = new HashMap<>();
params.put("url", file.toURI().toURL());
DataStore dataStore = DataStoreFinder.getDataStore(params);
String typeName = dataStore.getTypeNames()[0];
SimpleFeatureSource featureSource = dataStore.getFeatureSource(typeName);
SimpleFeatureCollection featureCollection = featureSource.getFeatures();
String json = new ObjectMapper().writeValueAsString(new FeatureCollectionJson(featureCollection));
```
2. 创建一个Spring Boot RESTful API将GeoJSON数据传递给前端:
```java
@RestController
public class MapController {
@GetMapping("/mapdata")
public String getMapData() throws IOException {
// 读取shp文件并转换为GeoJSON格式
// ...
return json;
}
}
```
3. 在Vue组件中使用Leaflet.js加载地图,并使用axios库请求后端接口获取GeoJSON数据,然后将数据批量添加到地图上:
```html
<template>
<div id="map"></div>
</template>
<script>
import axios from 'axios';
import L from 'leaflet';
export default {
mounted() {
// 加载地图
const map = L.map('map').setView([40.7128, -74.0060], 12);
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution: 'Map data © <a href="https://www.openstreetmap.org/">OpenStreetMap</a> contributors, ' +
'<a href="https://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery © <a href="https://www.mapbox.com/">Mapbox</a>',
maxZoom: 18,
}).addTo(map);
// 请求后端接口获取地图数据
axios.get('/mapdata').then(response => {
const data = response.data;
if (data && data.features) {
const geojson = L.geoJSON(data.features);
map.addLayer(geojson);
}
});
}
}
</script>
```
以上是一种简单的实现方案,具体实现过程还需要根据实际需求进行调整。
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