http://ip.chinaz.com/getip.aspx

效果如下：

程式碼如下：

public static String getMyIP() throws IOException {  
		 	String url="http://ip.chinaz.com/getip.aspx";
		 	InputStream is = new URL(url).openStream();
		    try {
		      BufferedReader rd = new BufferedReader(new InputStreamReader(is, Charset.forName("UTF-8")));
		      
		      StringBuilder sb = new StringBuilder();
		      int cp;
		      while ((cp = rd.read()) != -1) {
		        sb.append((char) cp);
		      }
		      String jsonText =  sb.toString();;
		      jsonText=jsonText.replaceAll("'", "");
		      jsonText=jsonText.substring(1,jsonText.length()-1);
		      jsonText=jsonText.replaceAll(",", "<br/>");
		      return jsonText;
		    } finally {
		      is.close();
		     // System.out.println("同時 從這裡也能看出 即便return了，仍然會執行finally的！");
		    }
	    }