一个Demo看URL和URI的区别

package com.practise.test;

import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;

/**
* Created by mashao on 15/11/27.
*/
public class Main {

public static void main(String[] args) {
try {
URL url=new URL("http://developer.android.com/referencejava/net/URL.html?s=a#getRef()");
System.out.println("Authority是:"+url.getAuthority());
System.out.println("Host是:"+url.getHost());
System.out.println("Port是："+url.getPort());
System.out.println("File是"+url.getFile());
System.out.println("Path是"+url.getPath());
System.out.println("Query是："+url.getQuery());
System.out.println("Ref是:"+url.getRef());
} catch (MalformedURLException e) {
e.printStackTrace();
}

try {
URI absolute=new URI("http://www.baidu.com");
URI relative=new URI("robot.txt");
URI resolved=new URI("http://www.baidu.com/robot.txt");

System.out.println("-----------------------解析前-------------------------");
System.out.println("Authority是:"+relative.getAuthority());
System.out.println("Host是:"+relative.getHost());
System.out.println("Port是："+relative.getPort());
System.out.println("Path是"+relative.getPath());
System.out.println("Query是："+relative.getQuery());
System.out.println("Ref是:"+relative.getFragment());
System.out.println("Scheme是:"+relative.getScheme());

System.out.println("-----------------------解析后-------------------------");
relative=absolute.resolve(relative);
System.out.println("Authority是:"+relative.getAuthority());
System.out.println("Host是:"+relative.getHost());
System.out.println("Port是："+relative.getPort());
System.out.println("Path是"+relative.getPath());
System.out.println("Query是："+relative.getQuery());
System.out.println("Ref是:"+relative.getFragment());
System.out.println("Scheme是:"+relative.getScheme());

System.out.println("-----------------------相对化-------------------------");
relative=absolute.relativize(resolved);
System.out.println("Authority是:"+relative.getAuthority());
System.out.println("Host是:"+relative.getHost());
System.out.println("Port是："+relative.getPort());
System.out.println("Path是"+relative.getPath());
System.out.println("Query是："+relative.getQuery());
System.out.println("Ref是:"+relative.getFragment());
System.out.println("Scheme是:"+relative.getScheme());

System.out.println("-----------------------不透明-------------------------");
URI uri=new URI("mailto:warsh@msncn");
System.out.println("Authority是:"+uri.getAuthority());
System.out.println("Host是:"+uri.getHost());
System.out.println("Port是："+uri.getPort());
System.out.println("Path是"+uri.getPath());
System.out.println("Query是："+uri.getQuery());
System.out.println("Ref是:"+uri.getFragment());
System.out.println("Scheme是:"+uri.getScheme());
System.out.println("Scheme具体部分:"+uri.getSchemeSpecificPart());

} catch (URISyntaxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}