src/osm/jp/api/HttpGET.java

   1 package osm.jp.api;\r
   2 \r
   3 import java.net.*;\r
   4 import java.io.*;\r
   5 \r
   6 import javax.xml.parsers.DocumentBuilder;\r
   7 import javax.xml.parsers.DocumentBuilderFactory;\r
   8 import javax.xml.parsers.ParserConfigurationException;\r
   9 \r
  10 import org.w3c.dom.NamedNodeMap;\r
  11 import org.w3c.dom.Node;\r
  12 import org.w3c.dom.NodeList;\r
  13 import org.xml.sax.SAXException;\r
  14 \r
  15 /**\r
  16  * Java HTTP クライアントサンプル - HttpURLConnection 版 -\r
  17  *\r
  18  * @author 68user http://X68000.q-e-d.net/~68user/\r
  19  */\r
  20 public class HttpGET {\r
  21         //public static String host = "http://api06.dev.openstreetmap.org";\r
  22         public static String host = "http://api.openstreetmap.org";\r
  23         \r
  24         public static void main(String[] args) throws MalformedURLException, ProtocolException, IOException {\r
  25         getCapabilities();\r
  26         \r
  27         /*\r
  28                 <node id="-4131" timestamp="2011-01-21T16:47:41Z" lat="35.4350644157973" lon="139.423684433498">\r
  29                         <tag k="name" v="あやせ荘"/>\r
  30                 </node>\r
  31                 <node id="-4152" timestamp="2011-01-21T16:47:41Z" lat="35.4341675801122" lon="139.418362759267">\r
  32                         <tag k="name" v="武者奇橋"/>\r
  33                 </node>\r
  34                 <node id="-4155" timestamp="2011-01-21T16:47:41Z" lat="35.4369651010672" lon="139.426400070915">\r
  35                         <tag k="name" v="綾瀬市役所"/>\r
  36                 </node>\r
  37          */\r
  38 \r
  39         double minlon = 139.4197591d;\r
  40                 double maxlon = 139.4279939d;\r
  41                 double minlat = 35.4320438d;\r
  42                 double maxlat = 35.4375923d;\r
  43                 HttpGET.getMap(minlon, minlat, maxlon, maxlat);\r
  44         \r
  45                 HttpGET.getMap(35.4350644157973d, 139.423684433498d, 50);       // あやせ荘\r
  46                 HttpGET.getMap(35.4341675801122d, 139.418362759267d, 50);       // 武者奇橋\r
  47                 HttpGET.getMap(35.4369651010672d, 139.426400070915d, 50);       // 綾瀬市役所\r
  48     }\r
  49         \r
  50         public static void getCapabilities() throws MalformedURLException, ProtocolException, IOException {\r
  51                 System.out.println(host + "/api/capabilities");\r
  52         URL url = new URL(host + "/api/capabilities");\r
  53 \r
  54         HttpURLConnection urlconn = (HttpURLConnection)url.openConnection();\r
  55         urlconn.setRequestMethod("GET");\r
  56         urlconn.setInstanceFollowRedirects(false);\r
  57         urlconn.setRequestProperty("Accept-Language", "ja;q=0.7,en;q=0.3");\r
  58         urlconn.connect();\r
  59 \r
  60         System.out.println("レスポンスコード[" + urlconn.getResponseCode() + "] " +\r
  61                            "レスポンスメッセージ[" + urlconn.getResponseMessage() + "]");\r
  62         System.out.println("\n---- ボディ ----");\r
  63 \r
  64         BufferedReader reader = new BufferedReader(new InputStreamReader(urlconn.getInputStream()));\r
  65 \r
  66         while (true){\r
  67             String line = reader.readLine();\r
  68             if ( line == null ){\r
  69                 break;\r
  70             }\r
  71             System.out.println(line);\r
  72         }\r
  73 \r
  74         reader.close();\r
  75         urlconn.disconnect();\r
  76         }\r
  77         \r
  78 \r
  79         public static final double BIG_Y = (6378137.0d + 6356752.314d) / 2d;    // 地球の平均半径（ｍ）\r
  80         public static final double LAT1 = Math.PI * 2d * BIG_Y / 360d;                  // 緯度１度の距離（ｍ）\r
  81         public static int getMap(double lat, double lon, int m) throws MalformedURLException, ProtocolException, IOException {\r
  82                 double dLat = m / LAT1;                                         // 距離を表す緯度（差分）\r
  83                 double minlat = lat - dLat;             // 底辺（緯度）\r
  84                 double maxlat = lat + dLat;             // 上辺（緯度）\r
  85                 \r
  86                 double y = Math.cos(lat / 180.0d * Math.PI) * BIG_Y;    // 緯線上の地球の半径\r
  87                 double lon1 = (y * 2.0d * Math.PI) / 360;                       // 経度１度の距離（ｍ）\r
  88                 double dLon = m / lon1;                                         // 距離を表す経度（差分）\r
  89                 double minlon = lon - dLon;             // 左辺\r
  90                 double maxlon = lon + dLon;             // 右辺\r
  91 \r
  92                 System.out.println("緯線上の地球の半径= "+ y);\r
  93                 System.out.println("緯度1秒の長さ（ｍ）= "+ LAT1 / 3600);\r
  94                 System.out.println("経度1秒の長さ（ｍ）= "+ lon1 / 3600);\r
  95 \r
  96                 return getMap(minlon, minlat, maxlon, maxlat);\r
  97         }\r
  98         \r
  99         public static int getMap(RectArea center) throws MalformedURLException, ProtocolException, IOException {\r
 100                 return getMap(center.minlon, center.minlat, center.maxlon, center.maxlat);\r
 101         }\r
 102         \r
 103         public static int getMap(double minlon, double minlat, double maxlon, double maxlat) throws MalformedURLException, ProtocolException, IOException {\r
 104                 String param = host + "/api/0.6/map" + "?bbox="+ Double.toString(minlon) +","+ Double.toString(minlat) +","+ Double.toString(maxlon) +","+ Double.toString(maxlat);\r
 105 \r
 106                 System.out.println(param);\r
 107         URL url = new URL(param);\r
 108 \r
 109         HttpURLConnection urlconn = (HttpURLConnection)url.openConnection();\r
 110         urlconn.setRequestMethod("GET");\r
 111         urlconn.setInstanceFollowRedirects(false);\r
 112         urlconn.setRequestProperty("Accept-Language", "ja;q=0.7,en;q=0.3");\r
 113         urlconn.connect();\r
 114 \r
 115         System.out.println("レスポンスコード[" + urlconn.getResponseCode() + "] " +\r
 116                            "レスポンスメッセージ[" + urlconn.getResponseMessage() + "]");\r
 117         System.out.println("\n---- ボディ ----");\r
 118 \r
 119         //------------------------------------------\r
 120         DocumentBuilderFactory factory;\r
 121                 DocumentBuilder        builder;\r
 122                 Node root;\r
 123 \r
 124                 try {\r
 125                         factory = DocumentBuilderFactory.newInstance();\r
 126                         builder = factory.newDocumentBuilder();\r
 127                         factory.setIgnoringElementContentWhitespace(true);\r
 128                         factory.setIgnoringComments(true);\r
 129                         factory.setValidating(true);\r
 130                         root    = builder.parse(urlconn.getInputStream());\r
 131 \r
 132                         counter = 0;\r
 133                         checkNodes(root);\r
 134                 } catch (ParserConfigurationException e0) {\r
 135                         System.out.println(e0.getMessage());\r
 136                 } catch (SAXException e1){\r
 137                         System.out.println(e1.getMessage());\r
 138                 } catch (IOException e2) {\r
 139                         System.out.println(e2.getMessage());\r
 140                 }\r
 141 \r
 142                 System.out.println("バス停数["+ counter +"]");\r
 143         urlconn.disconnect();\r
 144         \r
 145         return counter;\r
 146         }\r
 147         \r
 148         public void sendCMD(String api) throws MalformedURLException, ProtocolException, IOException {\r
 149                 System.out.println(host + api);\r
 150         URL url = new URL(host + api);\r
 151 \r
 152         HttpURLConnection urlconn = (HttpURLConnection)url.openConnection();\r
 153         urlconn.setRequestMethod("GET");\r
 154         urlconn.setInstanceFollowRedirects(false);\r
 155         urlconn.setRequestProperty("Accept-Language", "ja;q=0.7,en;q=0.3");\r
 156         urlconn.connect();\r
 157 \r
 158         System.out.println("レスポンスコード[" + urlconn.getResponseCode() + "] " +\r
 159                            "レスポンスメッセージ[" + urlconn.getResponseMessage() + "]");\r
 160         System.out.println("\n---- ボディ ----");\r
 161 \r
 162         BufferedReader reader = new BufferedReader(new InputStreamReader(urlconn.getInputStream()));\r
 163 \r
 164         while (true){\r
 165             String line = reader.readLine();\r
 166             if ( line == null ){\r
 167                 break;\r
 168             }\r
 169             System.out.println(line);\r
 170         }\r
 171 \r
 172         reader.close();\r
 173         urlconn.disconnect();\r
 174     }\r
 175         \r
 176         public static int counter;\r
 177         public static void checkNodes(Node node) {\r
 178                 if (isBusstop(node)) {\r
 179                         counter++;\r
 180                         showNode(node);\r
 181                 }\r
 182                 \r
 183                 NodeList nodes = node.getChildNodes();\r
 184                 for (int i=0; i<nodes.getLength(); i++) {\r
 185                         Node node2 = nodes.item(i);\r
 186                         checkNodes(node2);\r
 187                 }\r
 188         }\r
 189         \r
 190         /**\r
 191          * [バス停]か？\r
 192          * @param node\r
 193          * @throws IOException\r
 194          * @throws SQLException\r
 195          */\r
 196         public static boolean isBusstop(Node node) {\r
 197                 NodeList nodes = node.getChildNodes();\r
 198                 for (int i=0; i < nodes.getLength(); i++) {\r
 199                         Node node2 = nodes.item(i);\r
 200                         if (isBusstopTag(node2)) {\r
 201                                 return true;\r
 202                         }\r
 203                 }\r
 204                 return false;\r
 205         }\r
 206 \r
 207         /**\r
 208          * [bus_stop]タグか？\r
 209          * @param node\r
 210          * @return\r
 211          */\r
 212         private static boolean isBusstopTag(Node node) {\r
 213                 if (node.getNodeName().equals("tag")) {\r
 214                         boolean highway = false;\r
 215                         boolean bus_stop = false;\r
 216                         boolean public_transport = false;\r
 217                         boolean plathome = false;\r
 218                         boolean stop_position = false;\r
 219                         NamedNodeMap nodeMap = node.getAttributes();\r
 220                         if ( null != nodeMap ) {\r
 221                                 for (int j=0; j < nodeMap.getLength(); j++ ) {\r
 222                                         String key = nodeMap.item(j).getNodeName();\r
 223                                         String value = nodeMap.item(j).getNodeValue();\r
 224                                         if (key.equals("k") && value.equals("highway")){\r
 225                                                 highway = true;\r
 226                                         }\r
 227                                         if (key.equals("k") && value.equals("public_transport")){\r
 228                                                 public_transport = true;\r
 229                                         }\r
 230                                         if (key.equals("v") && value.equals("bus_stop")){\r
 231                                                 bus_stop = true;\r
 232                                         }\r
 233                                         if (key.equals("v") && value.equals("plathome")){\r
 234                                                 plathome = true;\r
 235                                         }\r
 236                                         if (key.equals("v") && value.equals("stop_position")){\r
 237                                                 stop_position = true;\r
 238                                         }\r
 239                                 }\r
 240                                 if (highway && bus_stop) {\r
 241                                         return true;\r
 242                                 }\r
 243                                 if (public_transport && (plathome || stop_position)) {\r
 244                                         return true;\r
 245                                 }\r
 246                         }\r
 247                 }\r
 248                 return false;\r
 249         }\r
 250 \r
 251         /**\r
 252          * 指定されたノードを再帰的に表示する。\r
 253          * \r
 254          * @param node\r
 255          * @throws IOException\r
 256          * @throws SQLException\r
 257          */\r
 258         public static void showNode(Node node) {\r
 259                 System.out.print("<"+ node.getNodeName());\r
 260                 NamedNodeMap nodeMap = node.getAttributes();\r
 261                 if ( null != nodeMap ) {\r
 262                         for ( int j=0; j < nodeMap.getLength(); j++ ) {\r
 263                                 System.out.print(" "+ nodeMap.item(j).getNodeName() +"=\""+ nodeMap.item(j).getNodeValue() +"\"");\r
 264                         }\r
 265                 }\r
 266 \r
 267                 System.out.print(">"+ node.getNodeValue());\r
 268                 \r
 269                 NodeList nodes = node.getChildNodes();\r
 270                 for (int i=0; i<nodes.getLength(); i++) {\r
 271                         showNode(nodes.item(i));\r
 272                 }\r
 273                 System.out.println("</"+ node.getNodeName() +">");\r
 274         }\r
 275         \r
 276         class RectArea {\r
 277         public double minlon;\r
 278         public double maxlon;\r
 279         public double minlat;\r
 280         public double maxlat;\r
 281 \r
 282         /**\r
 283          * 矩形領域を中心点と中心点からの距離（メートル）でセットする\r
 284          * \r
 285          * @param lat   // 中心点の緯度\r
 286          * @param lon   // 中心点の経度\r
 287          * @param m             // 距離　領域の一辺の長さの半分\r
 288          */\r
 289                 public RectArea(double lat, double lon, int m) {\r
 290                         double BIG_Y = (40000000.0d / 2.0d / Math.PI);          // 地球の半径\r
 291                         double LAT1 = (10000000.0d / 90.0d);            // 緯度１度の距離（ｍ）\r
 292                         double dLat = m / LAT1;                                         // 距離を表す緯度（差分）\r
 293                         minlat = lat - dLat;            // 底辺（緯度）\r
 294                         maxlat = lat + dLat;            // 上辺（緯度）\r
 295                         double y = Math.sin((90.0d - lat) / 180.0d) * BIG_Y;    // 緯線上の地球の半径\r
 296                         double lon1 = y * 2.0d * Math.PI;                       // 経度１度の距離（ｍ）\r
 297                         double dLon = m / lon1;                                         // 距離を表す経度（差分）\r
 298                         minlon = lon - dLon;            // 左辺\r
 299                         maxlon = lon + dLon;            // 右辺\r
 300                 }\r
 301         }\r
 302 }\r