Question

为何form表单加上enctype="multipart/form-data", 得不到请求？

为何form表单加上enctype="multipart/form-data", 得不到请求！post 提交，却在请求里面得不到文本框或者文本域的值？这是为什么？

Answer 1

form中的字段，加上get set方法
private FormFile file;
private String filename;
private String filesize;
action 部分:
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
String dir="D:/";
UpFileForm uff=(UpFileForm)form;
FormFile file=uff.getFile();
if(file.getFileSize()==0){
return mapping.findForward("success");
}

String fname=file.getFileName();
String size=Integer.toString(file.getFileSize())+"bytes";

InputStream streamIn=file.getInputStream();
OutputStream streamOut=new FileOutputStream(dir+"/"+fname);

int bytesRead=0;
byte[] buffer=new byte[8192];
while((bytesRead=streamIn.read(buffer,0,8192))!=-1){
streamOut.write(buffer,0,bytesRead);
}
streamOut.close();
streamIn.close();

uff.setFilename(fname);
uff.setFilesize(size);
file.destroy();
return mapping.findForward("success");
}
这样将上传的文件存在d盘

Answer 2

你是要上传文件还是要干什么。说清楚点。不清楚再问我