fileaction.java

struts spring hibernate文件上传下载

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.richard.struts.action;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
import org.apache.struts.util.ModuleException;

import com.richard.model.TFile;
import com.richard.struts.form.FileActionForm;

/** 
 * MyEclipse Struts
 * Creation date: 08-31-2007
 * 
 * XDoclet definition:
 * @struts.action path="/file" name="fileActionForm" parameter="para" scope="request" validate="true"
 */
public class FileAction extends DispatchAction {
	com.richard.business.IFileService service;
	/*
	 * Generated Methods
	 */

	public void setService(com.richard.business.IFileService service) {
		this.service = service;
	}

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 * @throws IOException 
	 */
	public ActionForward upload(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws IOException {
		FileActionForm fileActionForm = (FileActionForm) form;// TODO Auto-generated method stub
		//fileActionForm.getFileRemark();
//		int size=fileActionForm.getFileContent().getFileSize();
//		if(size>=100000000){
			PrintWriter out=response.getWriter();
			out.write("<script type=\"text/javascript\">alert('文件太大了！')</script>");
			out.close();
			return null;
//		}
//		TFile tFile=new TFile();
//		try {
//			tFile.setFileContent(fileActionForm.getFileContent().getFileData());
//		} catch (FileNotFoundException e) {
//			// TODO Auto-generated catch block
//			e.printStackTrace();
//		} catch (IOException e) {
//			// TODO Auto-generated catch block
//			e.printStackTrace();
//		}
//		tFile.setFileName(fileActionForm.getFileContent().getFileName());
//		tFile.setFileRemark(fileActionForm.getFileRemark());
//		this.service.create(tFile);
//		return mapping.findForward("loadAllFile");
	}
//	FileService fileService = getFileService();
//	11. List fileList = fileService.getAllFile();
//	12. request.setAttribute("fileList",fileList);
//	13. return mapping.findForward("fileListPage");
	public ActionForward listAllFile(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		List fileList = this.service.getAllFile();
		request.setAttribute("fileList",fileList);
		return mapping.findForward("fileListPage");
	}
	
	public ActionForward download(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws ModuleException {
		//FileActionForm fileForm = (FileActionForm) form;
		Long fileId=new Long(request.getParameter("fileId"));
		String fileName = this.service.getFileName(fileId);
		try{
			response.setContentType("application/x-msdownload");
			response.setHeader("Content-Disposition","attachment;" + "filename="+new String(fileName.getBytes(), "ISO-8859-1"));
			this.service.write(response.getOutputStream(), fileId);
		}catch(Exception e){
			throw new ModuleException(e.getMessage());
		}
		return null;
	}
}