import java.io.*;
import java.net.*;
public class Test {
??? public boolean saveUrlAs(String photoUrl, String fileName) {
??????? //此方法只能用于HTTP協議
??????? try {
??????????? URL url = new URL(photoUrl);
??????????? HttpURLConnection connection = (HttpURLConnection) url.
??????????????????? openConnection();
??????????? DataInputStream in = new DataInputStream(connection.getInputStream());
??????????? DataOutputStream out = new DataOutputStream(new FileOutputStream(fileName));
??????????? byte[] buffer = new byte[4096];
??????????? int count = 0;
??????????? while ((count = in.read(buffer)) > 0) {
??????????????? out.write(buffer, 0, count);
??????????? }
??????????? out.close();
??????????? in.close();
??????????? return true;
??????? } catch (Exception e) {
??????????? return false;
??????? }
??? }
???
??? public String getDocumentAt(String urlString) {
??????? //此方法兼容HTTP和FTP協議
??????? StringBuffer document = new StringBuffer();
??????? try {
??????????? URL url = new URL(urlString);
??????????? URLConnection conn = url.openConnection();
??????????? BufferedReader reader = new BufferedReader(new InputStreamReader(
??????????????????? conn.getInputStream()));
??????????? String line = null;
??????????? while ((line = reader.readLine()) != null) {
??????????????? document.append(line + "\n");
??????????? }
??????????? reader.close();
??????? }catch (MalformedURLException e) {
??????????? System.out.println("Unable to connect to URL: " + urlString);
??????? }catch (IOException e) {
??????????? System.out.println("IOException when connecting to URL: " +
??????????????????? urlString);
??????? }
??????? return document.toString();
??? }
???
??? public static void main(String[] args) throws IOException {
??????? Test test = new Test();
??????? String photoUrl = "??????? String fileName = photoUrl.substring(photoUrl.lastIndexOf("/"));
??????? String filePath = "c:";
??????? boolean flag = test.saveUrlAs(photoUrl, filePath + fileName);
??????? System.out.println("Run ok!\nGet URL file " + flag);
??? }
}