显示SQL参数
在对数据库操作不成功的时候需要看下后台拼的SQL，以及参数是怎样，以判断那底是怎么不成功的。在TransactionWithActionRecord的
rivate static List<SQLItem> getSQLItems(HttpServletRequest request,String[] mapping,boolean ignoreNull)方法中加上一句代码（红色）：
?
private static List<SQLItem> getSQLItems(HttpServletRequest request,String[] mapping,boolean ignoreNull){
??List<SQLItem> list = new ArrayList<SQLItem>();
??
??if(mapping == null ) return list;
??
??for(int i=0;i<mapping.length;i++){
???String item = mapping[i];
???String[] spts = item.split("#");
???
???SQLItem sqlItem = null;
???
???String paramValue = (String)request.getAttribute(spts[0]);
???if(paramValue == null){
????paramValue = request.getParameter(spts[0]);
???}
?? ?System.out.println(spts[0]+":"+paramValue);
???if(ignoreNull){
????if(paramValue==null){
?????continue;
????}
???}
???if(spts.length<3){
????sqlItem = new SQLItem(spts[0],spts[1],paramValue);
???}else{
????sqlItem = new SQLItem(spts[2],spts[1],paramValue);
???}
???
???list.add(sqlItem);
??}
??return list;
?}?
