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[转载]C#环境下使用 Get 和Post 的方式访问WFS服务 – Li Minghua的专栏 – 博客频道 – CSDN.NET.
软件开发环境：VS2010
地图服务器：GeoServer 2.3.1
using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using System.Net;using System.Text;
private void GetUrlData()
{ WebClient client = new WebClient(); string rUrl = "http://10.14.1.34:8080/geoserver/wfs?service=WFS&version=1.0.0&request=getFeature&typeName=Shanxi:Toll&PROPERTYNAME=NAME,the_geom&FILTER=<Filter><PropertyIsEqualTo><PropertyName>KIND</PropertyName><Literal>8400</Literal></PropertyIsEqualTo></Filter>"; //client.DownloadDataCompleted += new DownloadDataCompletedEventHandler(client_DownloadDataCompleted); byte[] ss = client.DownloadData(new Uri(rUrl)); string result = Encoding.UTF8.GetString(ss); } private void PostUrlData() { //将字符串转换成字节数组, 注意Encoding.UTF8这样才能支持中文查询 byte[] postBy = Encoding.UTF8.GetBytes(this.WfsData()); //初始化WebClient WebClient webClient = new WebClient(); //webClient.Headers.Add("Content-Type", "application/x-www-form-urlencoded"); webClient.Headers.Add("Content-Type", "application/xml;charset=UTF-8"); webClient.Headers.Add("ContentLength", postBy.Length.ToString()); //上传数据，返回页面的字节数组 byte[] responseData = webClient.UploadData(rUrl, "POST", postBy); // 将返回的将字节数组转换成字符串(HTML); string srcString = Encoding.UTF8.GetString(responseData); } private string WfsData() { var xmlPara = "<?xml version='1.0' encoding='UTF-8'?>" + "<wfs:GetFeature service='WFS' version='1.0.0' " + "<wfs:Query typeName='Shanxi:Toll' srsName='EPSG:4326'>" //属性查询 + "<ogc:And><ogc:PropertyIsLike wildCard='*' singleChar='.' escape='!'>" + "<ogc:PropertyName>NAME</ogc:PropertyName>" + "<ogc:Literal>*收费站*</ogc:Literal>" + "</ogc:PropertyIsLike></ogc:And></ogc:Filter>" //空间查询 //+ "<ogc:Filter>" //+ "<ogc:Intersects>" //+ "<ogc:PropertyName>the_geom</ogc:PropertyName>" //+ " <gml:Point srsName='http://www.opengis.net/gml/srs/epsg.xml#4326'>" //+ "<gml:coordinates>111.08158415999999,38.98932696</gml:coordinates>" //+ "</gml:Point>" //+ "</ogc:Intersects>" //+ "</ogc:Filter>" //后部分节点 + "</wfs:Query>" +"</wfs:GetFeature>"; return xmlPara; }
