<% @ Page contentType = "text/html; charset = UTF-8" language = "java" import = "java. io. *, java. awt. image, java. awt. image. *, com.sun.image.codec.jpeg. *,
Java. SQL. *, com. jspsmart. upload. *, java. util. *, cn. oof. database. *, cn. oof. house. * "%>
<%
SmartUpload mySmartUpload = new SmartUpload ();
Long file_size_max = 4000000;
String fileName2 = "", ext = "", testvar = "";
String url = "UploadFile/"; // ensure that this directory exists in the root directory
// Initialization
MySmartUpload. initialize (pageContext );
// Only files of this type can be uploaded
Try {
MySmartUpload. setAllowedFilesList ("jpg, gif, bmp ");
// Upload a file
MySmartUpload. upload ();
} Catch (Exception e ){
%>
<SCRIPT language = javascript>
Alert ("upload only .jpg).bmp and .gif image files allowed ");
Registry.location='upload.htm ';
</Script>
<%
}
Try { Com. jspsmart. upload. File myFile = mySmartUpload. getFiles (). getFile (0 );
If (myFile. isMissing () {%>
<SCRIPT language = javascript>
Alert ("select the file to upload first ");
Registry.location='upload.htm ';
</Script>
<%}
Else {
// String myFileName = myFile. getFileName (); // Get the name of the uploaded file
Ext = myFile. getFileExt (); // Get the suffix
Int file_size = myFile. getSize (); // get the file size
String saveurl = "";
If (file_size <file_size_max ){
// Change the file name to obtain the millisecond value of the current Upload time
Calendar calendar = Calendar. getInstance ();
String filename = String. valueOf (calendar. getTimeInMillis ());
Saveurl = request. getRealPath ("/") + url;
Saveurl + = filename + "." + ext; // save path
String newpic = url + filename + "." + ext;
MyFile. saveAs (saveurl, mySmartUpload. SAVE_PHYSICAL );
// Out. print (filename );
// ----------------------- After the upload is complete, the thumbnail is generated -------------------------
Java. io. File file = new java. io. File (saveurl); // read the uploaded File
String newurl = request. getRealPath ("/") + url + "min _" + filename + "." + ext; // New thumbnail storage address
Image src = javax. imageio. ImageIO. read (file); // construct an Image object
Float tagsize = 200;
Int old_w = src. getWidth (null); // Obtain the source image width.
Int old_h = src. getHeight (null );
Int new_w = 0;
Int new_h = 0; // Obtain the source image length.
Int tempsize;
Float tempdouble;
If (old_w> old_h ){
Tempdouble = old_w/tagsize;
} Else {
Tempdouble = old_h/tagsize;
}
New_w = Math. round (old_w/tempdouble );
New_h = Math. round (old_h/tempdouble); // calculate the length and width of the new graph.
BufferedImage tag = new BufferedImage (new_w, new_h, BufferedImage. TYPE_INT_RGB );
Tag. getGraphics (). drawImage (src, new_w, new_h, null); // draw the reduced graph
FileOutputStream newimage = new FileOutputStream (newurl); // output to the File Stream
Required imageencoder encoder = required codec. createJPEGEncoder (newimage );
Encoder. encode (tag); // near JPEG encoding
Newimage. close (); Out. print ("<SCRIPT language = 'javascript '> ");
Out. print ("alert ('file uploaded successfully ');");
Out. print ("parent.doc ument. form1.img. value = '" + newpic + "';");
Out. print ("your own locationnames 'upload.htm ';");
Out. print ("</SCRIPT> ");
}
Else {
Out. print ("<SCRIPT language = 'javascript '> ");
Out. print ("alert ('the size of the uploaded file cannot exceed '+ (file_size_max/1000) +" K ');");
Out. print ("your own locationnames 'upload.htm ';");
Out. print ("</SCRIPT> ");
}
}
} Catch (Exception e ){ E. toString (); }
%> |
