try{
PrintWriter out = response.getWriter();
out.println("<script>");
out.println("alert('修改成功');");
out.println("</script>");
}catch(Exception e){
e.printStackTrace();
} finally{
try {
request.getRequestDispatcher(
"./proManage.do?method=displayTask&id=" + idd).forward(
request, response);
} catch (ServletException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} // 返回任务管理页面
}
只走了finally中的语句
没有弹出对话框