基于Java中的用户输入的SQL查询

Question

dis = new DataInputStream(csocket.getInputStream()); 
int choice = dis.readInt(); 
Connection conn = MySqlConnect.ConnectDB(); 
PreparedStatement pst = conn.prepareStatement("Select hostname from clients where C_ID="); 
ResultSet rs = pst.executeQuery(); 

如何将选择放入给定查询中？

Answer 1

你可以尝试使用pst.setInt这样的：

PreparedStatement pst=conn.prepareStatement("Select hostname from clients where C_ID=?"); 
pst.setInt(1, choice); 
ResultSet rs=pst.executeQuery();