fileaction.java

struts spring+Hibernate 实现文件上传下载操作

package sshfile.web;

import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForm;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForward;
import org.apache.struts.actions.DispatchAction;
import org.springframework.context.ApplicationContext;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.web.context.support.WebApplicationContextUtils;
import sshfile.service.FileService;
import org.apache.struts.util.ModuleException;
import java.io.*;
import java.util.ArrayList;
import java.util.List;
//import sshfile.help.*;
//import sshfile.model.*;
public class FileAction
    extends DispatchAction
{ArrayList arrayList=new ArrayList(); 
//PageBean pb; 

    public ActionForward upload(ActionMapping mapping, ActionForm form,
                                HttpServletRequest request,
                                HttpServletResponse response)
    {
        FileActionForm fileForm = (FileActionForm) form;
        FileService fileService = getFileService();
        fileService.save(fileForm);
        return mapping.findForward("forward");   
    }
    /**
     * 列出所有文件
     */
    public ActionForward listAllFile(ActionMapping mapping, ActionForm form,
                                  HttpServletRequest request,
                                  HttpServletResponse response)
      throws ModuleException
    {   //////////////////////////////////////////
       /* String action; 
		
		action=request.getParameter("action");
		if(action==null || action.equals("null")){ //第一次读取数据 
			try{   
				arrayList=getAllService(); 
			   }catch(Exception e){ 
				      e.printStackTrace(); 

			   }  
			   pb=new PageBean(arrayList); 
			   Tfile[] service =pb.getServiceInfo();			   
			   pb.description(); 
			   request.setAttribute("serviceInfo", service);
			   request.setAttribute("page",pb); }
		else 
		   { 
			   if(action=="nextPage" || action.equals("nextPage")) 
			   { 
	
				   Tfile[] service=pb.getNextPage(); 
				 
				   request.setAttribute("page",pb); 
				   request.setAttribute("serviceInfo",service);    
			   } 
			   if(action=="previousPage" || action.equals("previousPage")) 
			   { 
	
				   Tfile[] service=pb.getPreviouspage(); 
				 
				   request.setAttribute("page",pb); 
				   request.setAttribute("serviceInfo",service);  
			   } 
			   if(action=="firstPage" || action.equals("firstPage")) 
			   { 
	
				   Tfile[] service=pb.getFirstpage();   
				  
				   request.setAttribute("page",pb); 
				   request.setAttribute("serviceInfo",service);  
			   } 
			   if(action=="lastPage" || action.equals("lastPage")) 
			   { 
		
				   Tfile[] service=pb.getLastpage();   
				  
				   request.setAttribute("page",pb); 
				   request.setAttribute("serviceInfo",service);    
		   } 
		   }
    	///////////////////////////////////////////
    	 * */
    	
        System.out.println("here-----listAllFile--");
        FileService fileService = getFileService();
        List fileList = fileService.getAllFile();
        if (fileList != null)
        {
            System.out.println("is not null");
        }
        else
        {
            System.out.println("is null");
        }
        request.setAttribute("fileList",fileList);
        return mapping.findForward("fileList");
    }

    public ActionForward shanchu(ActionMapping mapping, ActionForm form,
            HttpServletRequest request,
            HttpServletResponse response) {
    	String fileId = request.getParameter("fileId");
    //JdbcTemplate jtl = (JdbcTemplate)contest.getBean("jdbcTemplate");
				return null;
    	
    }
    
    public ActionForward download(ActionMapping mapping, ActionForm form,
                                  HttpServletRequest request,
                                  HttpServletResponse response)
        throws ModuleException
    {
        FileActionForm fileForm = (FileActionForm) form;
        FileService fileService = getFileService();
        String fileName = fileService.getFileName(fileForm.getFileId());
        try
        {
            response.setContentType("application/x-msdownload");
            response.setHeader("Content-Disposition",
                               "attachment;" + " filename="+ new String(fileName.getBytes(), "ISO-8859-1"));
            fileService.write(response.getOutputStream(), fileForm.getFileId());
        }
        catch (Exception e)
        {
            throw new ModuleException(e.getMessage());
        }
        return null;
    }

    private FileService getFileService()
    {
        ApplicationContext appContext = WebApplicationContextUtils.
            getWebApplicationContext(this.getServlet().getServletContext());
        return (FileService) appContext.getBean("fileService");
    }

}