Notice : Undefined index: HTTP_ACCEPT_ENCODING in C:\server\web\www.showyounger.com\s-system.php on line 2
利用fileupload jar包实现文件上传的一个例子 | 小样儿(ShowYounger)
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import java.io.File;
import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
public class fileUploadServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding( "GBK" );
DiskFileItemFactory factory = new DiskFileItemFactory();
String path = request.getRealPath( "/upload" );
System.out.println( "path:" + path);
factory.setRepository( new File(path));
factory.setSizeThreshold( 1024 * 1024 );
ServletFileUpload upload= new ServletFileUpload(factory);
try {
List<FileItem> list=upload.parseRequest(request);
for (FileItem item : list){
String name=item.getFieldName();
if (item.isFormField()){
String value=item.getString();
System.out.println( "name: " +name+ " value: " +value);
request.setAttribute(name, value);
}
else {
String value=item.getName();
int start=value.lastIndexOf( "\\");
String fileName=value.substring(start+1);
System.out.println(" name: "+name+" value: "+fileName);
request.setAttribute(name, fileName);
item.write(new File(path,fileName));
}
}
}
catch(Exception ex){
ex.printStackTrace();
}
request.getRequestDispatcher(" index.jsp").forward(request, response);
}
}