struts2上传文件

<form class="form-horizontal" onkeydown="if(event.keyCode==13)return false;" action="/user/updatePro.do" method="post" ?????role="form" id="updateUserForm" enctype="multipart/form-data"> ???<input type="hidden" name="id" value="${user.id}"> ???????<div class="form-group"> ???????<label for="pic" class="col-sm-2 control-label">头像</label> ???????<div class="col-sm-4"> ???????????<input type="file" name="pic2" id="pic" /> ???????</div> ???</div> ???<div class="form-group"> ???????<div class="col-sm-offset-2 col-sm-10"> ???????????<button type="submit" class="btn btn-default" id="updateUserBtn">修改</button> ???????</div> ???</div></form>

package cn.getword.action;import cn.getword.domain.User;import cn.getword.service.UserService;import com.opensymphony.xwork2.ActionSupport;import com.opensymphony.xwork2.ModelDriven;import org.apache.commons.fileupload.servlet.ServletFileUpload;import org.apache.commons.io.FileUtils;import org.apache.struts2.ServletActionContext;import org.apache.struts2.convention.annotation.Action;import org.apache.struts2.convention.annotation.Namespace;import org.apache.struts2.convention.annotation.ParentPackage;import org.apache.struts2.convention.annotation.Result;import org.apache.struts2.dispatcher.multipart.MultiPartRequestWrapper;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import javax.servlet.http.HttpServletRequest;import java.io.File;import java.io.IOException;import java.time.LocalDate;import java.util.*;@Controller@ParentPackage("my-default")@Namespace("/user")public class UserAction extends ActionSupport implements ModelDriven<User> { ???@Autowired ???private UserService userService; ???private User user = new User(); ???private String pic2FileName; ?// 获取原始文件名，同理可以获取文件File ???@Action(value = "update", results = {@Result(location = "/WEB-INF/views/updateUser.jsp")}) ???public String updateUser() { ???????HttpServletRequest request = ServletActionContext.getRequest(); ???????User user1 = userService.getUserById(user.getId()); ???????request.setAttribute("user", user1); ???????return SUCCESS; ???} ???@Action(value = "updatePro", results = {@Result(name = "success", type = "redirect", location = "/index.do"), ???????????@Result(name = "input", type = "redirect", location = "/index.do") ???}) ???public String updateUserPro() { ???????HttpServletRequest request = ServletActionContext.getRequest(); ???????String pic = request.getParameter("pic2"); ???????if (ServletFileUpload.isMultipartContent(request)) { ???????????File[] pics = ((MultiPartRequestWrapper) request).getFiles("pic2"); ???????????if (pics.length > 0) { ???????????????File file = pics[0]; ???????????????String path = "/upload/images/user"; ???????????????LocalDate now = LocalDate.now(); ???????????????path += "/" + now.getYear() + now.getMonthValue() + now.getDayOfMonth(); ???????????????File dir = new File(request.getServletContext().getRealPath(path)); ???????????????if (!dir.exists()) { ???????????????????dir.mkdirs(); ???????????????} ???????????????String filename = file.getName(); ???????????????String ext = filename.substring(filename.lastIndexOf(".") + 1); ???????????????//判断是否需要覆盖 ???????????????User u1 = userService.getUserById(user.getId()); ???????????????String filepath = u1.getPic(); //虚拟目录 ???????????????if (user.getPic() == null) { ???????????????????filepath = path + "/" + UUID.randomUUID().toString().replace("-", "") +"."+ ext; ???????????????????user.setPic(filepath); ???????????????} ???????????????File uploadFile = new File(request.getServletContext().getRealPath(filepath)); ?//目标路径 ???????????????try { ???????????????????FileUtils.copyFile(file, uploadFile); ???????????????} catch (IOException e) { ???????????????????e.printStackTrace(); ???????????????} ???????????????rs = userService.updateUser(user); ???????????} ???????????return SUCCESS; ???????} ???????return INPUT; ???} ???//====================== ???@Override ???public User getModel() { ???????return user; ???} ???public void setUserService(UserService userService) { ???????this.userService = userService; ???} ???public String getPic2FileName() { ???????return pic2FileName; ???} ???public void setPic2FileName(String pic2FileName) { ???????this.pic2FileName = pic2FileName; ???}}