清华大学出版社-Java-Web程序设计上机习题答案

输入姓名: 6-2-1、

<%@ page language=\ <%

request.setCharacterEncoding(\

String name=request.getParameter(\ Class.forName(\

Connection conn=DriverManager.getConnection(\ Statement stat=conn.createStatement();

String sql=\STUNO='\

ResultSet rs=stat.executeQuery(sql);

while(rs.next()){

String stuno=rs.getString(\

String stuname=rs.getString(\ String stusex=rs.getString(\

out.print(stuno+\ }

stat.close(); conn.close(); %> 6-3、

<%@ page language=\

输入学号： 6-3-1、

<%@ page language=\

<% request.setCharacterEncoding(\ String sno=request.getParameter(\

String name=request.getParameter(\

Class.forName(\

Connection conn=DriverManager.getConnection(\ Statement stat=conn.createStatement();

String sql=\STUNO='\

ResultSet rs=stat.executeQuery(sql); if(!rs.next())

out.println(\学号不存在，登录失败！\ else{

String stuname=rs.getString(\ if(stuname.equals(name))

out.print(\恭喜，登陆成功！\ else

out.println(\姓名不存在！\ }

stat.close(); conn.close(); %>

Chapter7

7-1、

<%@ page language=\ <%

String address=request.getRemoteAddr(); int index=address.indexOf('.');

String addressCut=address.substring(0,index); if(addressCut.equals(\

out.print(\抱歉，你被禁止访问！\ %> 7-2、

<%@ page language=\

输入图书价格： 7-2-1、

<%@ page language=\ <%

String str=request.getParameter(\ %>

输入汇率：

7-2-2、

<%@ page language=\ <%

String str1=request.getParameter(\ String str2=request.getParameter(\ double d1=Double.parseDouble(str1); double d2=Double.parseDouble(str2); double r=d1/d2; out.print(r); %> 7-3、

<%@ page language=\

用户名：

密码： <%

String name=request.getParameter(\

String password=request.getParameter(\ if(name!=null&&password!=null){ if(name.equals(password)){

response.sendRedirect(\ }

else out.println(\登陆错误!\ } %> 7-3-1、

<%@ page language=\ 欢迎登陆！ 7-4、

<%@ page language=\

选择背景颜色:

7-4-1、