Do not place transaction control at the beginning of an Http request.

Alimama_pid = "inherit"; alimama_titlecolor = "0000FF"; clerk = "000000"; alimama_bgcolor = "FFFFFF"; alimama_bordercolor = "E6E6E6"; alimama_linkcolor = "008000 "; alimama_bottomcolor = "FFFFFF"; alimama_anglesize = "0"; bandwidth = "0"; alimama_icon = "0"; alimama_sizecode = "11"; alimama_width = 760; alima_amheight = 90; alimama_type = 2; I am in a second-hand bookstore on Taobao. I have time to check it out! Http://shop35357269.taobao.com/ Alimama_pid = "inherit"; alimama_titlecolor = "0000FF"; clerk = "000000"; alimama_bgcolor = "FFFFFF"; alimama_bordercolor = "E6E6E6"; alimama_linkcolor = "008000 "; alimama_bottomcolor = "FFFFFF"; alimama_anglesize = "0"; bandwidth = "0"; alimama_icon = "0"; alimama_sizecode = "12"; alimama_width = 468; alima_amheight = 60; alimama_type = 2;

Google_ad_client = "pub-6430022987645146"; google_ad_slot = "8687678907"; google_ad_width = 120; google_ad_height = 600; Var alimama_pid = "mm_100961__0_0"; var alimama_key = ""; var alimama_cid = "50004958"; var alimama_col = "1"; var alimama_row = "4 "; var alimama_type = "C"; var alimama_titlecolor = "0000FF"; var alimama_bgcolor = "C3D9FF"; var alimama_bordercolor = "E6E6E6"; var alimama_descolor = "000000 ";   The first time I know that there is such a way to control transactions is in a java project that uses Hibernate. The program architecture is roughly as follows, Create a ServletFilter to process all Web requests. In this ServletFilter, the Session is obtained by calling SessionFactory. The code is as follows: