mybatisplus中EntityWrapper的常用方法

#WHERE (issue_type = ?) AND (status = ? OR status = ? OR status = ?) 
EntityWrapper wrapper=new EntityWrapper();
        wrapper.eq("issue_type","缺陷").andNew().eq("status","提交").or()
                .eq("status","激活").or().eq("status","解决");

EntityWrapper<PayTiXianApplyEntity> ew=new EntityWrapper<PayTiXianApplyEntity>();
        ew.eq(Util.isNotEmpty(params.getState()), "STATE", params.getState())
                //state不为空,根据state查询
                .like(Util.isNotEmpty(params.getTxname()), "TXNAME", params.getTxname())
                .eq(Util.isNotEmpty(params.getTxmode()), "TXMODE", params.getTxmode())
                .like(Util.isNotEmpty(params.getTxserial()), "TXSERIAL", params.getTxserial())
                .addFilterIfNeed(Util.isNotEmpty(txtime), "DATE_FORMAT(TXTIME,'%Y-%m-%d')='" + txtime+"'")
                .addFilterIfNeed(Util.isEmpty(params.getState()),"state=1 or state=3 or state=4")
                //state为空,查询state为1或2的记录,即出纳人审核通过和没通过的记录
                .orderBy("TXTIME", false);
Page<PayTiXianApplyEntity> page = this.selectPage(
                new Query<PayTiXianApplyEntity>(params).getPage(),ew);

.addFilterIfNeed(Util.isEmpty(params.getState()),"state=1 or state=3 or state=4")

SELECT * FROM 表名
WHERE TXNAME like #{txname} 
AND TXMODE=#{txmode}
AND TXSERIAL=#{txserial}
AND DATE_FORMAT(TXTIME,'%Y-%m-%d')=#{txtime}
AND state=1 or state=3 or state=4
ORDER BY TXTIME;

.addFilterIfNeed(Util.isEmpty(params.getState()),"(state=1 or state=3 or state=4)")