解决getOutputStream() has already been called for this respons

java 代码

<%@ page import="java.io.*,java.util.*"%>
<%
    out.clear();  //加上这句
    out = pageContext.pushBody(); //还有这句就OK了
    response.reset();
    response.setContentType("image/jpeg");
    response.setHeader("Pragma","No-cache");
    response.setHeader("Cache-Control","no-cache");
    response.setDateHeader("Expires",0);
    String related_id = request.getParameter("related_id");
    OutputStream outs = response.getOutputStream();
    InputStream is = null;
    try{
        org.hibernate.Session se = atteam.database.enterprise.CurrentSession();
        List list = se.createQuery("from weblet_img_file where related_id='"+related_id+"'").list();
        if(list.size()>0){
            atteam.enterprise.weblet_img_file img = (atteam.enterprise.weblet_img_file)list.get(0);
            String file_name = img.getFile_name();
            java.sql.Blob file = (java.sql.Blob)img.getContent();
            is = file.getBinaryStream();
            int blobsize = (int)file.length();
            byte[] blobbytes = new byte[10240];
            int bytesRead = 0;
            while ((bytesRead = is.read(blobbytes)) != -1)
            {
                outs.write(blobbytes, 0, bytesRead);//输出图片
            }
            is.close();
            outs.close();
        }
    }catch(Exception e){
        e.printStackTrace(System.out);
    }
%>

评论

1 楼 xaxis 2007-07-12  

己經到了jsp 頁面, getOutputStream()當然己被call 了. 用Servlet 做吧