Java中基于用户输入的SQL查询

如何在给定的查询中进行选择？

您可以尝试使用

pst.setInt

如下：

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();

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