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贴吧设计

Jun 07, 2016 pm 03:55 PM
mysqlexperimentnumberPurposedesignconnect

贴吧设计说明 一、实验目的 1、连接MySQL数据库 2、读取数据库到web页面 二、实验要求 1、设计一个贴吧使用户可以注册、提问、回答 三、实验步骤 1、实验准备 a 安装mysql b 安装navicat c 把MySQL的jar包引入MyEclipse下 2、功能结构图 3、设计数据库 a 定

贴吧设计说明

一、实验目的

1、连接MySQL数据库

2、读取数据库到web页面

二、实验要求

1、设计一个贴吧使用户可以注册、提问、回答

三、实验步骤

1、实验准备

a 安装mysql

b 安装navicat

c 把MySQL的jar包引入MyEclipse下

2、功能结构图

 

\

 

3、设计数据库

a 定义三个表

user(uid、name)

question(qid、uid、title、content、time)

answer(aid、qid、uid、content、time)

b 通过e-r图分析三者之间的关系
 

 

\ c 数据库代码

CREATE DATABASE TB;

USE TB;

//创建表格
CREATE TABLE USER
(
		UID INT(10) NOT NULL AUTO_INCREMENT,
		NAME VARCHAR(20) NOT NULL,
		PRIMARY KEY(UID)
)ENGINE=INNODB DEFAULT CHARSET=gb2312;

CREATE TABLE QUESTION
(
		QID INT(10) NOT NULL AUTO_INCREMENT,
		UID INT(10),
		TITLE VARCHAR(20),
		CONTENT VARCHAR(100) NOT NULL,
		TIME VARCHAR(15) NOT NULL,
		FOREIGN KEY(UID) REFERENCES USER(UID),
		PRIMARY KEY(QID)
)ENGINE=INNODB DEFAULT CHARSET=gb2312;

CREATE TABLE ANSWER
(
		AID INT(10) NOT NULL AUTO_INCREMENT,
		QID INT(10),
		UID INT(10),
		CONTENT VARCHAR(200) NOT NULL,
		TIME VARCHAR(15) NOT NULL,
		FOREIGN KEY(QID) REFERENCES QUESTION(QID),
		FOREIGN KEY(UID) REFERENCES USER(UID),
		PRIMARY KEY(AID,QID)
)ENGINE=INNODB DEFAULT CHARSET=gb2312;

//插入数据
INSERT INTO USER(UID,NAME) VALUES
(1,'张三'),
(2,'李四'),
(3,'王五');

INSERT INTO QUESTION(QID,UID,TITLE,CONTENT,TIME) VALUES
(1,1,'计算','1+1=?','2014-3-2'),
(2,1,'天气','今天晴天吗?','2014-3-7'),
(3,2,'日期','明天星期几?','2014-3-9'),
(4,3,'天气','后天多少度?','2014-4-5');

INSERT INTO ANSWER(AID,QID,UID,CONTENT,TIME) VALUES
(1,2,2,'今天晴天','2014-3-7'),
(2,2,3,'今天晴天','2014-3-7'),
(1,1,2,'1+1=2','2014-3-10'),
(2,1,3,'1+1=2','2014-3-17'),
(1,3,2,'今天星期二','2014-3-11'),
(1,4,1,'后天20度','2014-4-5');

SELECT * FROM USER

SELECT * FROM QUESTION

SELECT * FROM ANSWER

4、设计java web页面

a 建立三个jsp页面(register.jsp login.jsp show.jsp question.jsp answer.jsp)

b 具体实现思路:首先设计register.jsp注册页面,当用户注册成功后直接进入login.jsp,点击登录进入index.jsp页面,其主要功能是显示数据库中保存的问题,在“管理”一栏中可以添加查看按钮。当点击查看按钮时页面跳转到question. jsp页面,此页 面中可以显示问题的标题、时间、内容和提问者信息,并添加一个回答按钮。当点击回答按钮时页面跳转到answer.jsp,在这个页面中可以统计问题的回答次数,查看回答的内容,添加回答内容,并显示回答时间。同时每个页面都可以返回到主页。(可参照 课本项目6.3---图书管理系统)

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