小功能实现（十八）生成kml文件

引入依赖

        <!--解析、生成kml文件类--><dependency><groupId>de.micromata.jak</groupId><artifactId>JavaAPIforKml</artifactId><version>2.2.0</version></dependency>

使用方法

注意：需要什么内容可自行添加

	//生成线路路径kml文件并返回流给前端public void exportCornerKml(List<Map<String,String>> cornerData, HttpServletResponse httpServletResponse) throws Exception{//数据准备OutputStream outputStream=null;Kml kml = KmlFactory.createKml();Document document = kml.createAndSetDocument().withName("").withId("").withVisibility(true).withOpen(true).withDescription("");// 创建StyleStyle style = document.createAndAddStyle().withId("normal_default");LineStyle lineStyle = style.createAndSetLineStyle().withColor("ffffffff").withWidth(1);// 创建PlacemarkPlacemark placemark = document.createAndAddPlacemark();placemark.withName("和城-厉阳");placemark.withVisibility(true).withDescription("");placemark.withStyleUrl("#default");// 创建LineStringLineString lineString = placemark.createAndSetLineString();lineString.withExtrude(false).withTessellate(true).withAltitudeMode(AltitudeMode.CLAMP_TO_GROUND);List<Coordinate> coordinates = new ArrayList<>();for (int i=0;i<cornerData.size();i++){coordinates.add(new Coordinate(Double.valueOf(cornerData.get(i).get("positionX")), Double.valueOf(cornerData.get(i).get("positionY")), 0.0));}lineString.setCoordinates(coordinates);//输出try {//获取表并写入outputStream=httpServletResponse.getOutputStream();httpServletResponse.setContentType("application/vnd.google-earth.kml+xml");httpServletResponse.setCharacterEncoding("utf-8");httpServletResponse.setHeader("Content-Disposition", "attachment;filename=" + java.net.URLEncoder.encode("路径.kml", "UTF-8"));kml.marshal(outputStream);outputStream.close();} catch (IOException e) {e.printStackTrace();}}