关于Java中的sql编写
首先导入 import java.sql.*;
Connection cn = null;
PrepareStatement =null;
ResultSet rs = null; //查询
try{
Class.forName("org.gjt.mm.mysql,Driver"); // 加载驱动
cn = DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/qq","root","1234");
ps = cn.prepareStatement("select * from user where username = ? and password = ?" );
ps.setString(1,..);
ps.setString(2,....);
rs = ps.executeQuery();
}
catch(Exception e ){
}
finally{
cn.close();
ps.close();
rs.close();
}