wǒ小Ъц傻

首先配置WEB－INF
下載 jspSmartUpload.jar 并解壓放入
舉例路徑E:\WEB-INF\classes\的下面

也可以
?將jar包復制到　\WEB-INF\lib　
目錄后重啟服務器，jspsmart即可正常使用了
1.upload.jsp
<%@ page?
language="java"
contentType="text/html;charset=gb2312"
import = "java.util.*"
import = "java.sql.*"
import = "java.text.*"?
import = "java.io.*"
%>

<form action="uploadimage.jsp" method="post" enctype="multipart/form-data" name="form">
?請選擇上傳的圖片
<input type="file" name="file">
<input type="submit" name="Submit" value="上傳">
</form>
2.uploadimage.jsp
<%@ page
language="java"
contentType="text/html;charset=gb2312"
import="java.io.*"
import="java.awt.Image"
import="java.awt.image.*"
import="com.sun.image.codec.jpeg.*"
import="java.sql.*"
import="com.jspsmart.upload.*"
import="java.util.*"
%>
<%
try{
??? com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(0);
??? if (myFile.isMissing()){%>
?? <SCRIPT language=javascript>
?? alert("請先選擇要上傳的文件");
?? window.location='upload.jsp';
?? </script>
??? <%}
??? else{
????? //String myFileName=myFile.getFileName(); //取得上載的文件的文件名
?? ext= myFile.getFileExt();????? //取得后綴名
?? int file_size=myFile.getSize();???? //取得文件的大小?
?? double pic_size=file_size;
?? String saveurl="";
?? if(file_size<file_size_max){
??? //更改文件名，取得當前上傳時間的毫秒數值
??? Calendar calendar = Calendar.getInstance();
??? String filename = String.valueOf(calendar.getTimeInMillis());
??? saveurl=request.getRealPath("/")+purl;
??? saveurl+=filename+"."+ext;????????? //保存路徑
??? myFile.saveAs(saveurl,mySmartUpload.SAVE_PHYSICAL);
??? //out.print(filename);
//-----------------------上傳完成，開始生成縮略圖-------------------------????
??? java.io.File file = new java.io.File(saveurl);??????? //讀入剛才上傳的文件
??? String newurl=request.getRealPath("/")+url+filename+"_min."+ext;? //新的縮略圖保存地址
??? Image src = javax.imageio.ImageIO.read(file);???????????????????? //構造Image對象
??? float tagsize=200;
??? int old_w=src.getWidth(null);???????????????????????????????????? //得到源圖寬
??? int old_h=src.getHeight(null);??
??? int new_w=0;
??? int new_h=0;??????????????????????????? //得到源圖長
??? 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);//計算新圖長寬
??? BufferedImage tag = new BufferedImage(new_w,new_h,BufferedImage.TYPE_INT_RGB);
??? tag.getGraphics().drawImage(src,0,0,new_w,new_h,null);?????? //繪制縮小后的圖
??? FileOutputStream newimage=new FileOutputStream(newurl);????????? //輸出到文件流
??? JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(newimage);??????
??? encoder.encode(tag);?????????????????????????????????????????????? //近JPEG編碼
???? newimage.close();???
//-------------生成縮略圖完畢（如果不需要可刪除這段）---------------
?}
?? else{
??? out.print("<SCRIPT language='javascript'>");
??? out.print("alert('上傳文件大小不能超過"+(file_size_max/1000)+"K');");
??? out.print("window.location='upload.jsp;'");
??? out.print("</SCRIPT>");
?????? ? }
? }
}catch (Exception e){

e.toString();

}
%>?
???