jQuery uploadify上传文件(JAVA版+Struts2即时预览效果)

package com.lun.action; import java.io.File; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Random; import org.apache.commons.io.FileUtils; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionSupport; public class UploadAction extends ActionSupport{ private File file; public void upload(){ SimpleDateFormat sdf=new SimpleDateFormat("yyyyMMdd_HHmmss"); Random r=new Random(); String path=ServletActionContext.getServletContext().getRealPath("/"); String imgName=sdf.format(new Date())+r.nextInt(100)+".jpg"; try { FileUtils.copyFile(file,new File(path+"upload\\"+imgName)); String outPath=ServletActionContext.getRequest().getScheme()+"://"+ServletActionContext.getRequest().getServerName()+":"+ServletActionContext.getRequest().getServerPort()+ServletActionContext.getRequest().getContextPath()+"/"; ServletActionContext.getResponse().getWriter().print(outPath+"upload/"+imgName); } catch (IOException e) { e.printStackTrace(); } } public File getFile() { return file; } public void setFile(File file) { this.file = file; } }