这个得用fileupload.jar
里面的代码能用到，这个是在图片里打水印的，然后上传至服务器的
public class FileuploadAction extends BaseAction{
/**
*
*/
private static final long serialVersionUID = 8283321781117635350L;
@SuppressWarnings(“unchecked”)
public String execute() throws Exception {
boolean isMultipart = ServletFileUpload.isMultipartContent(req);
if(! isMultipart){
req.setAttribute(“error”, “不是上载请求！”);
return “/fileupload.jsp”;
}
// Create a factory for disk-based file items
FileItemFactory factory = new DiskFileItemFactory();
// Create a new file upload handler
ServletFileUpload upload = new ServletFileUpload(factory);
// Parse the request
List /* FileItem */ items = upload.parseRequest(req);
for (FileItem item : items) {
if(item.isFormField()){
//表单普通field
req.setAttribute(item.getFieldName(), item.getString(“utf-8”));
}else{
String photo = “/photo/” + System.currentTimeMillis() + “-” + item.getName();
String filename = servlet.getServletContext().getRealPath(photo);
BufferedImage img = ImageIO.read(item.getInputStream());
// BufferedImage thumb = (BufferedImage)img.getScaledInstance(50, 50, BufferedImage.SCALE_SMOOTH);
Image thumb = img.getSubimage(0, 0, 200, 200);
BufferedImage bufImg =
new BufferedImage(200,200,BufferedImage.TYPE_3BYTE_BGR);
bufImg.getGraphics().drawImage(thumb, 0, 0, null);
bufImg.getGraphics().setColor(new Color(255,255,255,230));
bufImg.getGraphics().drawString(“程亮版权所有”, 10, 100);
File dir =
new File( servlet.getServletContext().getRealPath(“/photo”));
if(!dir.exists()){
dir.mkdir();
}
File file = new File(filename);
ImageIO.write(bufImg, “jpeg”, file);
// item.write(file);
req.setAttribute(item.getFieldName(), photo);
req.setAttribute(“photoName”, item.getName());
}
}
return “/fileupload.jsp”;
}
