sp; } catch (SQLException e) {
61 e.printStackTrace();
62 }
63 }
64 }
65
66 public List query(String sql) {
67 List list = new ArrayList();
68
69 conn = this.getConnection();
70 try {
71 stmt = conn.createStatement();
72 rs = stmt.executeQuery(sql);
73 //获取数据库表结构
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