String处理: 获得URL的最后一个字符串

方法很简单，使用URL类的方法。

因为url是有几部分组成，所以先获得file内容，然后使用string类的split()方法分解字符串。

实例代码：

package mark.zhang;

import java.net.MalformedURLException;
import java.net.URL;

public class LastStr {

	/**
	 * @param args
	 * @throws MalformedURLException 
	 */
	public static void main(String[] args) {
		String str = "http://blog.csdn.net/AndroidBluetooth";
		String out = getLastString(str);
		System.out.println("out content: " + out);
		
		/*String file = url.getFile();
		String protocol = url.getProtocol();
		String host = url.getHost();
		String userInfo = url.getUserInfo();
		String path = url.getPath();
		int defaultPort = url.getDefaultPort();
		int port = url.getPort();
		
		System.out.println("file: " + file);
		System.out.println("protocol: " + protocol);
		System.out.println("host: " + host);
		System.out.println("userInfo: " + userInfo);
		System.out.println("path: " + path);
		System.out.println("defaultPort: " + defaultPort);
		System.out.println("port: " + port);
		
		String[] splitStr = file.split("/");
		int len = splitStr.length;
		System.out.println("" + splitStr[len-1]);*/
	}
	
	public static String getLastString(String str) {
		URL url;
		try {
			url = new URL(str);
		} catch (MalformedURLException e) {
			return null;
		}
		
		String file = url.getFile();
		String[] splitStr = file.split("/");
		int len = splitStr.length;
		String result = splitStr[len-1];
		return result;
	}
}