hailin525的博客

一、关联查询，哪边有（+）哪边就补空select a.id,b.id from a,b where a.id = b.aid(+)/**结果为a.id b.id1 32322 3 5454*/

1、向session里添加值pageContext.putSessionValue(key,value)2、从session里取值pageContext.getSessionValue(key)3、创建二次确认页面OAException descMesg = new OAException("是否确认删除？");String noUrl = APPS_HTML_DIRECTORY + "OA.jsp?page=/cisdi/oracle/apps/ofa/asm/webui/Wa