Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

JspʵÏÖÎļþÏÂÔØ¹¦Äܵķ½·¨

 
£±.×îÖ±½Ó×î¼òµ¥µÄ£¬·½Ê½ÊǰÑÎļþµØÖ·Ö±½Ó·Åµ½htmlÒ³ÃæµÄÒ»¸öÁ´½ÓÖС£ÕâÑù×öµÄȱµãÊǰÑÎļþÔÚ·þÎñÆ÷ÉϵÄ·¾¶±©Â¶ÁË£¬²¢ÇÒ»¹ÎÞ·¨¶ÔÎļþÏÂÔØ½øÐÐÆäËüµÄ¿ØÖÆ£¨ÈçȨÏÞ£©¡£Õâ¸ö¾Í²»Ð´Ê¾ÀýÁË¡£
 
£².ÔÚ·þÎñÆ÷¶Ë°ÑÎļþת»»³ÉÊä³öÁ÷£¬Ð´Èëµ½response£¬ÒÔresponse°ÑÎļþ´øµ½ä¯ÀÀÆ÷£¬ÓÉä¯ÀÀÆ÷À´ÌáʾÓû§ÊÇ·ñÔ¸Òâ±£´æÎļþµ½±¾µØ¡££¨Ê¾ÀýÈçÏ£©
 
 
<%
response.setContentType(fileminitype);
response.setHeader("Location",filename);
response.setHeader("Cache-Control", "max-age=" + cacheTime);
//filenameÓ¦¸ÃÊDZàÂëºóµÄ(utf-8)
response.setHeader("Content-Disposition", "attachment; filename=" + filename);

response.setContentLength(filelength);
OutputStream outputStream = response.getOutputStream();
InputStream inputStream = new FileInputStream(filepath);
byte[] buffer = new byte[1024];
int i = -1;
while ((i = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, i);
}
outputStream.flush();
outputStream.close();
inputStream.close();
outputStream = null;
%>
 
£³.¼ÈÈ»ÊÇJSPµÄ»°£¬»¹ÓÐÒ»ÖÖ·½Ê½¾ÍÊÇÓÃAppletÀ´ÊµÏÖÎļþµÄÏÂÔØ¡£²»¹ý¿Í»§Ê×ÏȵÃÐÅÈÎÄãµÄÕâ¸öAppletС³ÌÐò£¬ÓÉÕâ¸ö³ÌÐòÀ´½ÓÊÜÓÉservlet·¢ËÍÀ´µÄÊý¾ÝÁ÷£¬²¢Ð´Èëµ½±¾µØ¡£
servlet¶ËʾÀý
 
 
public void service(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
res.setContentType(" text/plain ");
OutputStream outputStream = null;
try {
outputStream = res.getOutputStream();
//°ÑÎļþ·¾¶ÎªsrcFileµÄÎļþдÈëoutputStreamÖÐ
popFile(srcFile, outputStream)) ;

} catch (IOException e) {
e.printStackTrace();
}
}
 
JApplet¶ËʾÀý
 
 
URLConnection con;
try {
//urlÊDZ»µ÷ÓõÄSERVLETµÄÍøÖ· Èç *.do
con = url.openConnection();
con.setUseCaches(false);
con.setDoInput(true);
con.setDoOutput(true);
con.setRequestProper


Ïà¹ØÎĵµ£º

JSP STRUTS ECLIPSE ±àÂëÎÊÌâ

jspµÄpageEncoding="UTF-8",strutsµÄencoding="UTF-8"£¬eclipse µÄ¹¤×÷Çø¼äµÄ±àÂ뷽ʽÊÇGBK£¬µ«ÊÇÔÚstrutsµÄactionÖлñµÃµÄjsp´«À´µÄÖÐÎÄÖÐÓÐÂÒÂ룬ʹÓÃnew String(sysgkForm.getContent().getBytes("UTF-8"),"GBK")תÂëÒ²²»ÐУ¬×îºó·¢ÏÖÎÊÌâ³öÔÚÁËjspÀïÃæ¡£¼ÓÉÏcontentType="text/html; charset=GBK" ¾ÍºÃÁË¡£
pageEncodi ......

JSPÓëServletµÄÏ໥ͨÐÅ·½Ê½(Ò»)

     JSPÓëServletÖ®¼äµÄ»á»°¸ú×Ù·½Ê½Óжà¸ö£¬×¢¶¨ËûÃǵÄͨÐÅ·½Ê½ÓжàÖÖ¡£
    ÏÂÃæÏÈÀ´¿´¿´4ÖлỰ¸ú×Ù·½Ê½£º
     Ò»£ºSession
     ´«ËͶˣº
      HttpSession session=request.getSession();
sessio ......

JSP Òþʽ¶ÔÏó

·pageContext£ºÌṩ¶ÔÒ³ÃæÊôÐԵķÃÎÊ¡£
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
pageContext.setAttribute("basePath",basePath);
%>
ʹÓãº
${pageScope}
 
·reques ......

JSPÄÚÖöÔÏóÊôÐÔ¼°·½·¨´óÈ«

1.request¶ÔÏó
    ¿Í»§¶ËµÄÇëÇóÐÅÏ¢±»·â×°ÔÚrequest¶ÔÏóÖУ¬Í¨¹ýËü²ÅÄÜÁ˽⵽¿Í»§µÄÐèÇó£¬È»ºó×ö³öÏìÓ¦¡£ËüÊÇHttpServletRequestÀàµÄʵÀý¡£
ÐòºÅ                    ·½ ·¨      & ......

JSPÖÐfilter¹ýÂËÆ÷ÑéÖ¤Óû§µÇ¼

JSPÖÐfilter¹ýÂËÆ÷ÑéÖ¤Óû§µÇ¼
ÏÖÔÚJSPʹÓÃÔ½À´Ô½¹ã·ºÁË£¬ÓÈÆäÊǺܶàÕþ¸®µÄÍøÕ¾¶¼²ÉÓÃÁËJSP¼¼Êõ£¬Æä¹¦ÄÜÇ¿´óÇÒ°²È«¡£
³õѧÕߺܶàÓÐÕâô¸öÎÊÌ⣬¾ÍÊÇ£¬ÍøÕ¾µÄÒ»¸öȨÏÞÉèÖ㬱ÈÈçµÇ¼Óû§¿ÉÒԲ鿴ÄÄÐ©Ò³Ãæ£¬¶øÓοÍÓÖÓÐȨÏÞ¿ÉÒÔ¿´ÄÄЩÄÚÈÝÄØ£¿
JSPÊÇÇ¿´óµÄ£¬µ«Æä´úÂ뻹ÊÇÏà¶Ô·±ËöµÄ£¬ÆäʵÓÃÒ»¸ö¹ýÂËÆ÷(filter)¾Í¿ÉÒÔʵÏÖÕ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ