Question

java增删改查中的查询怎么判断

Answer 1

            conn = DriverManager.getConnection(url);
			stmt = conn.createStatement();			
			rs = stmt.executeQuery(selectsql);
			if (rs.next()){
				System.out.println("查询成功");
			}else {
				System.out.println("查询失败");
			}
			while(rs.next()){
				System.out.println(rs.getString("ClNbbh")+"   "+rs.getString("Cph")+"   "+rs.getString("ZgZh")+"   "+rs.getString("SjName"));			
			}