[tip]用jsp实现直接下载文件而不是在浏览器中打开的功能

<%    // example:    // <a href="/edu/uploadpic/2008-2/2008229133031460.gif">download image</a>
        string root = getservletcontext().getrealpath("/");    string path = request.getparameter("path");    string name = request.getparameter("name");
        response.setcontenttype("unknown");    response.addheader("content-disposition", "filename="" + name + """);
        try    {        java.io.outputstream    os  = response.getoutputstream();        java.io.fileinputstream fis = new java.io.fileinputstream(root + path + name);
                byte[] b = new byte[1024];        int    i = 0;
                while ( (i = fis.read(b)) > 0 )         {            os.write(b, 0, i);        }
                fis.close();        os.flush();        os.close();    }    catch ( exception e )    {    }%>