瓷器图片,肯德拉威尔金森,飞的网店
现把该程序主要代码贴下,供大家需要的时候参考下:
<%@page import="java.util.*,
java.net.*,
java.text.*,
java.util.zip.*,
java.io.*" %>
<%!
static vector expandfilelist(string[] files, boolean incldirs){
vector v = new vector();
if (files == null) return v;
for (int j=0; j < files.length; i++) v.add (new file(urldecoder.decode(files[j])));
for (int i=0; i < v.size(); i++){
file f = (file) v.get(i);
if (f.isdirectory()){
file[] fs = f.listfiles();
for (int n = 0; n < fs.length; n++) v.add(fs[n]);
if (!incldirs){
v.remove(i);
i--;
}
}
}
return v;
}
class writer2stream extends outputstream{
writer out;
writer2stream (writer w){
super();
out = w;
}
public void write(int i) throws ioexception{
out.write(i);
}
public void write(byte[] b) throws ioexception{
for (int j=0;j<b.length;j++){
int n=b[j];
//convert byte to ubyte
n=((n>>>4)&0xf)*16+(n&0xf);
out.write (n);
}
}
public void write(byte[] b, int off, int len) throws ioexception{
for (int j = off; j < off + len; j++){
int n=b[j];
n = ((n>>>4)&0xf)*16+(n&0xf);
out.write(n);
}
}
}
%>
<%
/////下载压缩文件包
vector v = expandfilelist(request.getparametervalues("selfile"), false);
if (v.size() == 0){
request.setattribute("error", "no files selected");
}
else{
file dir_file = new file(request.getrealpath("") + "/myfile/");
int dir_l = dir_file.getabsolutepath().length();
response.setcontenttype ("application/zip");
response.setheader ("content-disposition", "attachment;filename=\"downloadname.rar\"");
out.clearbuffer();
zipoutputstream zipout = new zipoutputstream(new writer2stream(out));
zipout.setcomment("download selected files \nas one winrar file:\ndownloadname.rar");
zipout.setlevel(1);
for (int i=0;i<v.size();i++){
file f = (file)v.get(i);
if (f.canread()){
zipout.putnextentry(new zipentry(f.getabsolutepath().substring(dir_l+1)));
bufferedinputstream fr = new bufferedinputstream(new fileinputstream(f));
byte buffer[] = new byte[0xffff];
int b;
while ((b=fr.read())!=-1) zipout.write(b);
fr.close();
zipout.closeentry();
}
}
zipout.finish();
out.flush();
}
%>
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