Java 从Spring中的URL下载

我希望，通过将文件的URL（文件可以是图像、Xhtml或Css）粘贴到JSP格式中，可以从internet下载并在本地保存。您能帮我吗？

您可以使用此选项在浏览器中打开URL并保存到文件位置。
you can use this to open URL in the browser and save into the file location.
<%
String site= contain the string(URL);
response.setStatus(response.SC_MOVED_TEMPORARILY);
response.setHeader("Location", site);   
File file = new File("/Users/asdf.xml");  
FileWriter fr = null;
BufferedWriter br = null; 
URL url = new URL(site);
BufferedReader reader = new BufferedReader
(new InputStreamReader(url.openStream()));

fr = new FileWriter(file);
br = new BufferedWriter(fr);
String line;
while ((line = reader.readLine()) != null) {
System.out.println(line);
br.write(line);
br.newLine();
}
reader.close();
br.close();
%>