${if(len(oop)!=0  && oop != "00000001" &&  len(yg)==0  ,

"select xx.dwmc, sum(dm.xmdzzjf) zs 

from dm_jyshxxm_info  dm

left join 

xx_yxsdwjbsj xx on   dm.dwh=xx.dwh

where 1=1 and  (dm.dwh = '" +oop+ "' or dm.lsdwh = '" +oop+ "') "

+ if(len(tbsj_ks) == 0,"","and tjny >= '" +tbsj_ks + "'")

+ if(len(tbsj_js) == 0,"","and tjny <= '" +tbsj_js + "'")+" group by xx.dwmc",

"") } 

填入参数，点这个看看对应的实际sql，应该是语法有问题

你这个group by 要放到字符串里，或者{}的外边

很明显 的语法错误，后面的group by 不在双引号内。