# ssm学习笔记精选(2)

1. 获取当前时间戳 long time = (int) (System.currentTimeMillis() / 1000); System.out.println(time); 2.三元运算符 ${vo.status==1?'checked':''}

2. 导出

        
            org.apache.poi
            poi-ooxml-schemas
            3.10-FINAL
        
         
            org.apache.poi
            poi-ooxml
             3.10-FINAL
        
       
          org.apache.poi
          poi
          3.10-FINAL