<%@ 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/"; //應保證在根目錄中有此目錄的存在
//初始化
mySmartUpload.initialize(pageContext);
//只允許上傳此類檔案
try {
mySmartUpload.setAllowedFilesList("jpg,gif,bmp");
//上傳檔案
mySmartUpload.upload();
} catch (Exception e){
%>
<SCRIPT language=javascript>
alert("只允許上傳.jpg、.bmp和.gif類型圖片檔案");
window.location='upload.htm';
</script>
<%
}
try{ com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(0);
if (myFile.isMissing()){%>
<SCRIPT language=javascript>
alert("請先選擇要上傳的檔案");
window.location='upload.htm';
</script>
<%}
else{
//String myFileName=myFile.getFileName(); //取得上傳的檔案的檔案名稱
ext= myFile.getFileExt(); //取得尾碼名
int file_size=myFile.getSize(); //取得檔案的大小
String saveurl="";
if(file_size<file_size_max){
//變更檔名，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("/")+url;
saveurl+=filename+"."+ext; //儲存路徑
String newpic=url+filename+"."+ext;
myFile.saveAs(saveurl,mySmartUpload.SAVE_PHYSICAL);
//out.print(filename);
//-----------------------上傳完成，開始產生縮圖-------------------------
java.io.File file = new java.io.File(saveurl); //讀入剛才上傳的檔案
String newurl=request.getRealPath("/")+url+"min_"+filename+"."+ext; //新的縮圖儲存地址
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); //繪製縮小後的圖
FileOutputStream newimage=new FileOutputStream(newurl); //輸出到檔案流
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(newimage);
encoder.encode(tag); //近JPEG編碼
newimage.close(); out.print("<SCRIPT language='javascript'>");
out.print("alert('檔案上傳成功');");
out.print("parent.document.form1.img.value = '"+newpic+"';");
out.print("window.location='upload.htm';");
out.print("</SCRIPT>");
}
else{
out.print("<SCRIPT language='javascript'>");
out.print("alert('上傳檔案大小不能超過"+(file_size_max/1000)+"K');");
out.print("window.location='upload.htm';");
out.print("</SCRIPT>");
}
}
}catch (Exception e){ e.toString(); }
%> |
