fileaction.java

about how to use struts2 file upload

package leeuploadfile;

import org.apache.struts.action.*;
import javax.servlet.http.*;
import org.apache.struts.upload.FormFile;
import java.io.*;

/**
 * @author  yeeku.H.lee [e-mail]
 * @version  1.0
 * <br>Copyright (C), 2005-2008, yeeku.H.Lee
 * <br>This program is protected by copyright laws.
 * <br>Program Name:
 * <br>Date: 
 */
public class FileAction extends Action
{
	public ActionForward execute(ActionMapping actionMapping, ActionForm actionForm, 
		HttpServletRequest request, HttpServletResponse response)
	{

		//DynaActionForm fileactionForm = (DynaActionForm) actionForm;
		FileActionForm fileactionForm = (FileActionForm) actionForm;
	    if(fileactionForm != null)
		{
			System.out.println("文件formbean不为空");
			//如果是配置动态ActionForm将用如下一句
			//FormFile formFile=(FormFile)fileactionForm.get("file");
			FormFile formFile=(FormFile)fileactionForm.getFile();
			if(formFile != null)
			{
			    System.out.println("文件不为空");
			    String name = formFile.getFileName();
			    System.out.println("文件名是：" + name);
			    try
				{
					byte[] content = formFile.getFileData();
					System.out.println(servlet.getServletContext().getRealPath("/"));
					FileOutputStream out = new FileOutputStream(
						servlet.getServletContext().getRealPath("/")
						+ "\\uploadfiles\\" + name);
					System.out.println("文件开始上传....");
					out.write(content);
					System.out.println("文件上传成功....");
					out.close();
			    }
			    catch(Exception e)
			    {
					System.out.println(e);
			    }
			}
		}
		return actionMapping.findForward("back");
	}
}