String userId=request.getParameter("text"); String pwd=request.getParameter("password"); Class.forName("com.mysql.jdbc.Driver"); String url="jdbc:mysql://localhost:3306/db1?useSSL=false&useUnicode=true&characterEncoiding=UTF-8"; String user="root"; String password="123456"; Connection conn=DriverManager.getConnection(url,user,password); String sql="INSERT INTO user(useID,password) VALUES(?,?)"; PreparedStatement ps=conn.prepareStatement(sql); ps.setString(1, userId); ps.setString(2, pwd); int i=ps.executeUpdate(); out.println("添加"+i+"行"); /* int i=stat.executeUpdate(sql); */ /* out.println("成功添加"+i+"行"); */ ps.close(); conn.close(); %>包都导入了 不知道为啥一直报错大神求解