Todayfreeman

這個問題讓我郁悶了兩三天時間,最后才發(fā)現(xiàn)問題是在JSP端  <html:form action="/uploadsAction"  enctype="multipart/form-data"  >
標(biāo)簽如果少了"  enctype="multipart/form-data"  服務(wù)器就會報錯,
下面把代碼貼出來.

JSP端
 <html:errors />
          <html:form action="/uploadsAction"  enctype="multipart/form-data"  >
            <html:file property="theFile" /> 
             <html:radio property="upType" value="a" />CSVFileReader
             <html:radio property="upType" value="b" />FileUp      
            <html:submit value="OK"  />
          </html:form>
FormBean中將屬性定義為FormFile,geter seter 方法依舊.
Action 中的代碼如下:實(shí)現(xiàn)將圖片上傳至UPLOAD文件夾內(nèi) 如果文件大于20K或是寬＆高超過規(guī)定范圍的,會重新勾畫.實(shí)現(xiàn)對上傳圖片的控制.
當(dāng)然這只是測試Action沒有跳轉(zhuǎn)頁面..

package upload;

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.action.Action;
import org.apache.struts.upload.*;
import java.io.IOException;
import java.awt.Image;
import java.awt.image.BufferedImage;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
import com.sun.image.codec.jpeg.JPEGCodec;

import java.io.File;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;

public class UploadAction extends Action {
    public ActionForward execute(ActionMapping actionMapping,
                                 ActionForm actionForm,
                                 HttpServletRequest servletRequest,
                                 HttpServletResponse servletResponse)throws Exception {
        System.out.println("asdasdasdasdasdasd");
        UploadForm uploadForm = (UploadForm) actionForm;
        FormFile pic =  uploadForm.getPic();
        String picname = pic.getFileName();
        String uploadFileName = servletRequest.getSession()
                                .getServletContext()
                                .getRealPath("upload")+"\\"+picname;
        File upliadFile = new File(uploadFileName);
        BufferedInputStream bis = null;
        Image image = null;
        BufferedOutputStream bos = null;
        try{
        if(pic.getFileSize()<2*1024*1024){
        bis = new BufferedInputStream(pic.getInputStream());
        image = javax.imageio.ImageIO.read(bis);
        int width = image.getWidth(null);
        int height = image.getHeight(null);
        int w = 160;
        int h = 120;
        if(width>w||height>h){
        BufferedImage bi = new BufferedImage(w,h,
                                             BufferedImage.TYPE_INT_RGB);
        bi.getGraphics().drawImage(image,0,0,w,h,null);
        bos = new BufferedOutputStream(new FileOutputStream(
       upliadFile));
        JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(bos);
     encoder.encode(bi);
        System.out.println(width * height);
        }else{
        bos = new BufferedOutputStream(new FileOutputStream(upliadFile));
        byte[] date = new byte[5*1024];
        int len = bis.read(date);
        while (len!=-1){
            bos.write(date);
            len = bis.read(date);
        }
        }
        }
             return actionMapping.findForward("ok");
        }catch(Exception e){
        e.printStackTrace();
    } finally {
        try {
            if (bis != null)
                bis.close();
        } catch (IOException e1) {

            e1.printStackTrace();
        }
        try {
            if (bos != null)
                bos.close();
        } catch (IOException e2) {

            e2.printStackTrace();
        }
    }

        return actionMapping.findForward("ok");
    }
}