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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TooptimizeMySQLperformance,followthesesteps:1)Implementproperindexingtospeedupqueries,2)UseEXPLAINtoanalyzeandoptimizequeryperformance,3)Adjustserverconfigurationsettingslikeinnodb_buffer_pool_sizeandmax_connections,4)Usepartitioningforlargetablestoi


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