本文主要是介绍080813 结合使用SWFUpload和SmartUpload，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
前台使用SWFUpload：<%@ page contentType="text/html; charset=GBK"%>
<%@ page import="javax.servlet.*"%>
<%@ page import="javax.servlet.http.*"%>
<%@ page import="com.yourcompany.util.*"%>
<html>
<head>
<link href="js/default.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="js/swfupload.js"></script>
<script type="text/javascript" src="js/handlers.js"></script>
<script src="js/jquery.js" type="text/javascript"></script>
<script type="text/javacript">
function g(){
$.ajax({
url: 'upload2.jsp',
date: {c: $('#c').val(), c: $('#c').val()},
error: function() { alert"fail"},
success: function(response) { ... }
});
}
</script>
<script type="text/javascript">
var swfu;
window.onload = function () {
swfu = new SWFUpload({
// Backend Settings
upload_url: "upload2.jsp", // Relative to the SWF file
post_params: {"product1": "1"},
use_query_string:false,
// File Upload Settings
file_size_limit : "2048", // 2MB
file_types : "*.jpg",
file_types_description : "JPG Images",
file_upload_limit : "0",
// Event Handler Settings - these functions as defined in Handlers.js
// The handlers are not part of SWFUpload but are part of my website and control how
// my website reacts to the SWFUpload events.
file_queue_error_handler : fileQueueError,
file_dialog_complete_handler : fileDialogComplete,
upload_progress_handler : uploadProgress,
upload_start_handler : uploadStart,
upload_error_handler : uploadError,
upload_success_handler : uploadSuccess,
upload_complete_handler : uploadComplete,
// Flash Settings
flash_url : "js/swfupload_f9.swf", // Relative to this file
custom_settings : {
upload_target : "divFileProgressContainer"
},
// Debug Settings
debug: false
});
}
function uploadStart(file) {
var post_params = this.settings.post_params;
post_params.product = document.getElementById("product").value;
this.setPostParams(post_params);
return true;
}
</script>
</head>
<div id="SWFUploadTarget">
<body>
<div>
<form action="upload2.jsp" method="get">
<button id="btnBrowse" type="button" style="padding: 5px;" onClick="swfu.selectFiles(); this.blur();"><img src="images/page_white_add.png" style="padding-right: 3px; vertical-align: bottom;">请选择图片<span style="font-size: 7pt;">(2 MB Max)</span></button>
请输入产品ID<input type="text" name="product" id="product" value="">
</form>
</div>
<div id="divFileProgressContainer" style="height: 75px;"></div>
<div id="thumbnails"></div>
</div>
</body>
<html>
后台使用SmartUpload：
<%@ page contentType="text/html;charset=gb2312" language="java" import="java.io.*,java.awt.Image,java.awt.image.*,com.sun.image.codec.jpeg.*,
java.sql.*,com.jspsmart.upload.*,java.util.*,com.yourcompany.util.*"%>
<%
SmartUpload mySmartUpload =new SmartUpload();
long file_size_max=4000000;
//add
//初始化
mySmartUpload.initialize(pageContext);
//只允许上载此类文件
try {
mySmartUpload.setAllowedFilesList("jpg,gif");
//上载文件
mySmartUpload.upload();
} catch (Exception e){
%>
<SCRIPT language=javascript>
alert("只允许上传.jpg和.gif类型图片文件");
window.location=''upfile.jsp'';
</script>
<%
}
//try{
com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(0);
if (myFile.isMissing()){%>
<SCRIPT language=javascript>
alert("请先选择要上传的文件");
window.location=''upfile.jsp'';
</script>
<%}
else{
String fileName2="",ext="",testvar="";
String productname=mySmartUpload.getRequest().getParameter("product");
String url="/uploadfile/"+productname+"/"; //应保证在根目录中有此目录的存在
java.io.File file1 = new java.io.File(request.getRealPath("/") + url );
if(!file1.exists())
{
file1.mkdir();
}
//String myFileName=myFile.getFileName(); //取得上载的文件的文件名
ext= myFile.getFileExt(); //取得后缀名
int file_size=myFile.getSize(); //取得文件的大小
String saveurl="";
if(file_size<file_size_max){
int temp=1,temp2=0;
String[] a=myFile.getFileName().split(".jpg");
String myFileNameo = productname+"_00_pic_big";
String myFileName = productname+"_0"+temp;
Calendar calendar = Calendar.getInstance();
String filename = String.valueOf(calendar.getTimeInMillis());
saveurl=request.getRealPath("/")+url;
saveurl+=myFileNameo+"."+ext; //保存路径
myFile.saveAs(saveurl,mySmartUpload.SAVE_PHYSICAL);
// java.io.File f1 = new java.io.File (saveurl);
// java.io.File f2 = new java.io.File (request.getRealPath("/")+url+myFileName+"_0_big.jpg");
// f1.renameTo(f2);
//out.print(filename);
//-----------------------上传完成，开始生成缩略图-------------------------
com.yourcompany.util.DirList dirlist = new com.pixel.util.DirList();
String[] dir =dirlist.list(request.getRealPath("/") + url );
for(int i=0;i<dir.length;i++){
//for (String i : dir){
String[] split = dir[i].split("\\.");
if(split[1].equals("jpg")){
String[] split2=split[0].split("\\_");
//split2[1]=01
if(Integer.parseInt(split2[1])>0&Integer.parseInt(split2[1])>=temp2){
temp2=Integer.parseInt(split2[1])+1;
}
if(Integer.parseInt(split2[1])==0){
temp2=1;
}
}
}
if(temp2<=10){
myFileName = productname+"_0"+temp2;
}else{
myFileName = productname+"_"+temp2;
}
//myFileName = mySmartUpload.getRequest().getParameter("product");
java.io.File file = new java.io.File(saveurl); //读入刚才上传的文件
String newurl=request.getRealPath("/")+url+myFileName+"_70_min."+ext; //新的缩略图保存地址
Image src = javax.imageio.ImageIO.read(file); //构造Image对象
float tagsize=70;
int old_w=src.getWidth(null); //得到源图宽
int old_h=src.getHeight(null);
int new_w=0;
int new_h=0; //得到源图长
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);//计算新图长宽
BufferedImage tag = new BufferedImage(new_w,new_h,BufferedImage.TYPE_INT_RGB);
tag.getGraphics().drawImage(src,0,0,new_w,new_h,null); //绘制缩小后的图
FileOutputStream newimage=new FileOutputStream(newurl); //输出到文件流
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(newimage);
encoder.encode(tag); //近JPEG编码
//读入刚才上传的文件
newurl=request.getRealPath("/")+url+myFileName+"_130_min."+ext; //新的缩略图保存地址
//Image src = javax.imageio.ImageIO.read(file); //构造Image对象
tagsize=130;
// int old_w2=src2.getWidth(null); //得到源图宽
// int old_h2=src2.getHeight(null);
// int new_w=0;
// int new_h=0; //得到源图长
// 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);//计算新图长宽
tag = new BufferedImage(new_w,new_h,BufferedImage.TYPE_INT_RGB);
tag.getGraphics().drawImage(src,0,0,new_w,new_h,null); //绘制缩小后的图
newimage=new FileOutputStream(newurl); //输出到文件流
encoder = JPEGCodec.createJPEGEncoder(newimage);
encoder.encode(tag); //近JPEG编码
newurl=request.getRealPath("/")+url+myFileName+"_180_min."+ext; //新的缩略图保存地址
//Image src = javax.imageio.ImageIO.read(file); //构造Image对象
tagsize=180;
// int old_w2=src2.getWidth(null); //得到源图宽
// int old_h2=src2.getHeight(null);
// int new_w=0;
// int new_h=0; //得到源图长
// 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);//计算新图长宽
tag = new BufferedImage(new_w,new_h,BufferedImage.TYPE_INT_RGB);
tag.getGraphics().drawImage(src,0,0,new_w,new_h,null); //绘制缩小后的图
newimage=new FileOutputStream(newurl); //输出到文件流
encoder = JPEGCodec.createJPEGEncoder(newimage);
encoder.encode(tag); //近JPEG编码
newurl=request.getRealPath("/")+url+myFileName+"_500_min."+ext; //新的缩略图保存地址
//Image src = javax.imageio.ImageIO.read(file); //构造Image对象
tagsize=500;
// int old_w2=src2.getWidth(null); //得到源图宽
// int old_h2=src2.getHeight(null);
// int new_w=0;
// int new_h=0; //得到源图长
// 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);//计算新图长宽
tag = new BufferedImage(new_w,new_h,BufferedImage.TYPE_INT_RGB);
tag.getGraphics().drawImage(src,0,0,new_w,new_h,null); //绘制缩小后的图
newimage=new FileOutputStream(newurl); //输出到文件流
encoder = JPEGCodec.createJPEGEncoder(newimage);
encoder.encode(tag); //近JPEG编码
newurl=request.getRealPath("/")+url+myFileName+"_800_min."+ext; //新的缩略图保存地址
//Image src = javax.imageio.ImageIO.read(file); //构造Image对象
tagsize=800;
// int old_w2=src2.getWidth(null); //得到源图宽
// int old_h2=src2.getHeight(null);
// int new_w=0;
// int new_h=0; //得到源图长
// 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);//计算新图长宽
tag = new BufferedImage(new_w,new_h,BufferedImage.TYPE_INT_RGB);
tag.getGraphics().drawImage(src,0,0,new_w,new_h,null); //绘制缩小后的图
newimage=new FileOutputStream(newurl); //输出到文件流
encoder = JPEGCodec.createJPEGEncoder(newimage);
encoder.encode(tag); //近JPEG编码
newimage.close();
}
else{
out.print("<SCRIPT language=''javascript''>");
out.print("alert(''上传文件大小不能超过"+(file_size_max/1000)+"K'');");
out.print("window.location=''upfile.jsp;''");
out.print("</SCRIPT>");
}
}
//}catch (Exception e){
//e.toString();
//}
%>
其中：
com.yourcompany.util.DirList dirlist = new com.yourcompany.DirList();
String[] dir =dirlist.list(request.getRealPath("/") + url );
for(int i=0;i<dir.length;i++){
//for (String i : dir){
String[] split = dir[i].split("\\.");
if(split[1].equals("jpg")){
String[] split2=split[0].split("\\_");
//split2[1]=01
if(Integer.parseInt(split2[1])>0&Integer.parseInt(split2[1])>=temp2){
temp2=Integer.parseInt(split2[1])+1;
}
if(Integer.parseInt(split2[1])==0){
temp2=1;
}
}
}
if(temp2<=10){
myFileName = productname+"_0"+temp2;
}else{
myFileName = productname+"_"+temp2;
}
这部分调用一个方法，读取目录里的文件名，并重新按照01、02、03的顺序命名。
获取目录里的文件名的类：
import java.io.File;
import java.io.FilenameFilter;
import java.util.Arrays;
import java.util.Comparator;
import java.util.regex.Pattern;
public class DirList {
public String[] list(String thepath) {
File path = new File(thepath);
String[] list;
list = path.list();
Arrays.sort(list, new AlphabeticComparator());
return list;
}
}
class DirFilter implements FilenameFilter {
private Pattern pattern; public DirFilter(String regex) {
pattern = Pattern.compile(regex); }
public boolean accept(File dir, String name) {
// Strip path information, search for regex:
return pattern.matcher(new File(name).getName()).matches();
}
}
class AlphabeticComparator implements Comparator {
public int compare(Object o1, Object o2) {
String s1 = (String) o1; String s2 = (String) o2;
return s1.toLowerCase().compareTo(s2.toLowerCase());
}
}
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