google map api如何根据地名获取经纬度？？？

[aihuaying]

google map api如何根据地名获取经纬度？？？
function initialize() {
if (GBrowserIsCompatible()) {
var map = new GMap2(document.getElementById("map_canvas"));
//map.setMapType(G_SATELLITE_MAP);
map.setCenter(new GLatLng(26.263432028939793, 117.63870913535357), 13);

}
}

想把上面红色的经纬度，改为地名如：北京市。如何做？？？
如何根据地名获取经纬度？？？

[空白-键]

	/**
	 * 根据地址返回经纬度
	 * @param addr
	 * @return 返回经纬度数据, latLng[0]经度,latLng[1]维度
	 */
	public static String[] getCoordinate(String addr) {
		String[] latLng = new String[2];
		String address = null;
		try {
			address = java.net.URLEncoder.encode(addr, "UTF-8");
		} catch (UnsupportedEncodingException e1) {
			e1.printStackTrace();
		}
		;
		String output = "csv";
		//密钥可以随便写一个key=abc
		String key = "abc";
		String url = "http://maps.google.com/maps/geo?q=" + address + "&output=" + output + "&key=" + key;
		URL googleMapURL = null;
		URLConnection httpsConn = null;
		// 进行转码
		try {
			googleMapURL = new URL(url);
		} catch (MalformedURLException e) {
			e.printStackTrace();
		}

		try {
			httpsConn = (URLConnection)googleMapURL.openConnection();
			if (httpsConn != null) {
				InputStreamReader insr = new InputStreamReader(httpsConn.getInputStream(), "UTF-8");
				BufferedReader br = new BufferedReader(insr);
				String data = null;
				if ((data = br.readLine()) != null) {
					String[] retList = data.split(",");
					/*
					 * String latitude = retList[2]; String longitude =
					 * retList[3];
					 * 
					 * System.out.println("纬度"+ latitude);
					 * System.out.println("经度"+ longitude);
					 */
					if (retList.length > 2 && ("200".equals(retList[0]))) {
						latLng[0] = retList[2];
						latLng[1] = retList[3];
					}
				}
				insr.close();
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
		return latLng;
	}

[aihuaying]

thank you!