struts2图片上传

在做struts2上传的时候是很简单的，虽然是个入侵式的框架，但是做文件的操作还是很方便的。

如做图片上传的时候，只需要在jsp页面内有type为file的属性即可。

           <img src="${basePath}upload/<s:property value='user.headImg'/>" width="100" height="100"/>
                <%-- <s:hidden>
                
                <s:param name="user.headImg"><s:property value ="user.headImg"/></s:param>
                </s:hidden> --%>
                
                <s:hidden name="user.headImg"/>
       <input type="file" name="headImg"/>

然后再action层加上file,fileContentType,fileName即可。使用 FileUtils.copyFile();工具类，很好的实现了图片上传。

action代码如下：

public class UserAction extends ActionSupport {

	@Resource
	private UserService userService;
	private List<User> userList;
	private User user;
	private String[] selectedRow;

	// 设置文件上传
	private File headImg;
	private String headImgContentType;
	private String headImgFileName;

	// 列表页面
	public String listUI() {
		userList = userService.findObjects();
		return "listUI";
	}

	// 跳转到新增页面
	public String addUI() {
		return "addUI";
	}

	// 保存新增
	public String add() {
		if (user != null) {
			userService.save(user);
		}
		return "list";
	}

	// 跳转到编辑页面
	public String editUI() {
		if (user != null && user.getId() != null) {
			user = userService.findObjectById(user.getId());
		}
		return "editUI";
	}

	// 保存编辑
	public String edit() {
		try {
			if (user != null) {
				if (headImg != null) {
					String filepath = ServletActionContext.getServletContext().getRealPath("upload/user");
					String filename = UUID.randomUUID().toString().replace("-", "")+headImgFileName.substring(headImgFileName.lastIndexOf("."));;
					FileUtils.copyFile(headImg, new File(filepath,filename));
					user.setHeadImg("user/"+filename);
				}

				userService.update(user);
			}
		} catch (Exception e) {
			
			e.printStackTrace();
		}
		return "list";
	}

	// 删除
	public String delete() {
		if (user != null && user.getId() != null) {
			userService.delete(user.getId());
		}
		return "list";
	}

	// 批量删除
	public String deleteSelected() {
		if (selectedRow != null) {
			for (String id : selectedRow) {
				userService.delete(id);
			}
		}
		return "list";
	}

	public List<User> getUserList() {
		return userList;
	}

	public void setUserList(List<User> userList) {
		this.userList = userList;
	}

	public User getUser() {
		return user;
	}

	public void setUser(User user) {
		this.user = user;
	}

	public String[] getSelectedRow() {
		return selectedRow;
	}

	public void setSelectedRow(String[] selectedRow) {
		this.selectedRow = selectedRow;
	}

	public File getHeadImg() {
		return headImg;
	}

	public void setHeadImg(File headImg) {
		this.headImg = headImg;
	}

	public String getHeadImgContentType() {
		return headImgContentType;
	}

	public void setHeadImgContentType(String headImgContentType) {
		this.headImgContentType = headImgContentType;
	}

	public String getHeadImgFileName() {
		return headImgFileName;
	}

	public void setHeadImgFileName(String headImgFileName) {
		this.headImgFileName = headImgFileName;
	}

	

}