Java读取远程文件[Http,ftp],并保存
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import java.net.*;
import java.io.*;
/*
* Created on 2007-6-1
*
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
*/
/**
* @author howard
*
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
*/
public class TestUrl {
public boolean saveUrlAs(String photoUrl, String fileName) {
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) {
System.out.println(e);
return false;
}
}
/**
* 兼容HTTP和FTP协议
* @param urlString
* @return
*/
public String getDocumentAt(String urlString) {
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();
}
/**
*
* @param args
*/
public static void main(String[] args) {
TestUrl test = new TestUrl();
String photoUrl = "http://www.zhplc.com/468x60.gif";
String fileName = photoUrl.substring(photoUrl.lastIndexOf("/"));
String filePath = "c:\\";
boolean flag = test.saveUrlAs(photoUrl, filePath + fileName);
System.out.println("Run ok!\n Get URL file " + flag);
}
}
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