import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
public class urlTest {
public static void main(String[] args) {
InputStream is = null;
InputStream isConn = null;
FileOutputStream fos = null;
try {
URL url = new URL("http://localhost:8080/examples/urlTestFile.txt?a=b");
/*
* public String getProtocol( ) 获取该URL的协议名
public String getHost( ) 获取该URL的主机名
public String getPort( ) 获取该URL的端口号
public String getPath( ) 获取该URL的文件路径
public String getFile( ) 获取该URL的文件名
public String getRef( ) 获取该URL在文件中的相对位置
public String getQuery( ) 获取该URL的查询名
*/
System.out.println(url.getProtocol());
System.out.println(url.getHost());
System.out.println(url.getPort());
System.out.println(url.getPath());
System.out.println(url.getFile());
System.out.println(url.getRef());
System.out.println(url.getQuery());
// get 资源
is = url.openStream();
byte[] b = new byte[20];
int len;
while((len=is.read(b))!=-1){
System.out.println(new String(b,0,len));
}
// set资源
URLConnection urlconn = url.openConnection();
isConn = urlconn.getInputStream();
fos = new FileOutputStream(new File("abc.txt"));
byte[] by = new byte[20];
int lenConn;
while((lenConn=isConn.read(by))!=-1){
fos.write(by,0,lenConn);
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
if(is!=null){
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if(isConn!=null){
try {
isConn.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if(fos!=null){
try {
fos.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}
java网络编程 之 URL 对象
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转载自blog.csdn.net/MENGCHIXIANZI/article/details/104738376
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