Java中已经被try,catch的异常再其上一层中还能继续被try,catch吗?

Question

比如Dao层有一条 insert 语句, 在该层已经try,catch了,现在我故意将sql写错,
在Service层 try,catch时,走到try就打印出异常了,然后不会进catch,现在我想
让程序进Service层的catch该如何处理?

Service层的代码

 String sql = "INSERT INTO sys_algorithm_info (ID, SFMC, SFLX) VALUES ('"+id+"', '"+sfmc+"', '"+sflx+"')";

            List<String> sqllist = new ArrayList<String>();
            sqllist.add(sql);

            try {
                dataService.insertList(sqllist );
            } catch (Exception e) {
                flag = "0";      //这里代码不进catch,直接跳过,无法将flag设置成0
                e.printStackTrace();
            }

Dao层的代码

 public boolean insertList(List<String> sqllist) {
        List<Object[]> list = null;
        // TODO Auto-generated method stub
        if (sqllist != null && sqllist.size() > 0) {
            boolean flag = false;

            try {
                int[] resoult = this.updateSqlDataAll(sqllist);
                if(resoult!=null){
                    flag = true;
                }else{
                    flag = false;
                }

            } catch (Exception e) {
                flag = false;
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            return flag;
        } else {
            return false;
        }
    }

Answer 1

在dao曾不catch里的Exception抛出去
throws e；
方法上面加上throw