//查找下级机构的递归
    List<Sysjgxxb> jgxxList3 = new ArrayList<Sysjgxxb>();
    public List<Sysjgxxb> findXjjg(List<Sysjgxxb> jgxxList) {
        String jgxxSql = null;
        List<Sysjgxxb> jgxxList1 = new ArrayList<Sysjgxxb>();
        List<Sysjgxxb> jgxxList2 = new ArrayList<Sysjgxxb>();
        try {
            for (int jgxxi=0; jgxxi<jgxxList.size(); jgxxi++) {
                //设置SQL语句
                jgxxSql = "SELECT jgxx FROM Sysjgxxb jgxx WHERE jgxx.上级机构 = '" + jgxxList.get(jgxxi).机构码()
                    + "' AND jgxx.机构码 != '" + jgxxList.get(jgxxi).机构码()
                    + "'";
                jgxxList1 = 按照SQL语句查询出符合条件的机构信息;
                if (jgxxList1 != null && jgxxList.size() > 0) {
                    for ( int jgxxj=0; jgxxj<jgxxList1.size(); jgxxj++) {
                        jgxxList2.add(jgxxList1.get(jgxxj));
                    }
                    for ( int jgxxk=0; jgxxk<jgxxList2.size(); jgxxk++) {
                        jgxxList3.add(jgxxList2.get(jgxxk));
                    }
                } else if (jgxxList1 == null && jgxxList2.isEmpty()) {
                    continue;
                }
            }
            if(jgxxList2 != null && jgxxList2.size() > 0) {
                findXjjg(jgxxList2);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        if (jgxxList3 != null && jgxxList3.size() > 0) {
            return jgxxList3;
        }
        return null;
    }

    //这是调用那个递归最后返回到页面的方法
    sysjgxxbList = 这是一个需要得到下机机构码的机构信息
    List<Sysjgxxb> resultList = findXjjg(sysjgxxbList);
    if(resultList != null && resultList.size() > 0) {
        for ( int i=0; i<resultList.size(); i++) {
            sysjgxxbList.add(resultList.get(i));
        }
    }