目录
1 概述
2 效果
3 数据表十个
4 代码实现过程
5 主要代码
5.1 用户相关代码
5.2 数据库连接代码
5.3 论坛发贴代码
1 概述
本系统是为网上交易提供的一个需求平台,买卖双方可以在网上拍卖网站上找到自己所需要的东西,也可以将自己不用的东西进行出售。网上拍卖系统的产生既可以让买卖双方方便理财,又能催进节约,符合当代节约社会的需要。传统的交易模式无法适应当代社会的的需要,所以建立一个网上拍卖交易平台是很有必要的,这样即能提高商品的重复利用率,减轻环境负担,又能促进社会的和谐发展。
选用jsp+servlet+javabean技术为基础[在后续的文章中讲解如何使用SSM(Spring+SpringMVC+MyBatis)来开发拍卖网站],MYSQL作为数据库平台,采用结构化开发方法,设计并完成了基于B/S模型的网上拍卖交易平台。
系统七个功能模块:管理员管理、商品信息管理、用户信息管理、公告管理、搜索信息、用户信誉度管理、论坛信息,并详细阐述了各个模块的设计和实现过程。
关键词:网上拍卖,B/S模式,JavaWeb,J2EE,SSM,MySQL数据库
2 效果
3 数据表十个
管理员表
字段名 | 字段说明 | 数据类型 | 字段长度 | 是否为空 | 约束类型 |
ID | 管理员编号 | Int(4) | 4 | Not Null | 主键 |
manager | 管理员用户名 | Varchar(30) | 30 | Not Null |
|
PWD | 管理员密码 | Varchar(30) | 30 | Not Null |
|
用户表
字段名 | 字段说明 | 数据类型 | 字段长度 | 是否为空 | 约束类型 |
ID | 用户编号 | int(4) | 4 | Not Null | 主键 |
userName | 用户名 | Varchar(20) | 20 | Not Null |
|
trueName | 真实名 | Varchar(20) | 20 | Not Null |
|
passWord | 密码 | Varchar(20) | 20 | Not Null |
|
city | 城市 | Varchar(20) | 20 |
|
|
address | 地址 | Varchar(100) | 100 | Not Null |
|
postcode | 邮编 | Varchar(6) | 6 | Not Null |
|
cardNO | 证件号码 | Varchar(24) | 24 | Not Null |
|
cardType | 证件类型 | Varchar(20) | 20 | Not Null |
|
Amount | 交易金额 | Money(4) | 4 |
|
|
tel | 电话 | Varchar(20) | 20 | Not Null |
|
| 邮箱 | Varchar(100) | 100 | Not Null |
|
freeze | 是否冻结 | Int(4) | 4 |
|
|
score | 信誉值 | Int(4) | 4 |
|
|
拍卖商品信息表
字段名 | 字段说明 | 数据类型 | 字段长度 | 是否为空 | 约束类型 |
pmgoodsid | 拍卖商品编号 | Int(4) | 4 | Not Null | 主键 |
goodsname | 商品名称 | Varchar(200) | 200 | Not Null |
|
bz | 备注 | Varchar(200) | 200 | Not Null |
|
price | 价格 | Int(4) | 4 | Not Null |
|
mid | 用户编号 | Int(4) | 4 | Not Null |
|
picture | 图片 | Varchar(50) | 50 | Not Null |
|
bdj | 成交价格 | Int(4) | 4 | Not Null |
|
jssj | 拍买时间 | Varchar(50) | 50 | Not Null |
|
zt | 状态 | Int(4) | 50 | Not Null |
|
typeID | 子类编号 | Int(4) | 4 | Not Null |
|
superTypeID | 父类编号 | Int(4) | 4 | Not Null |
|
用户拍买商品表
字段名 | 字段说明 | 数据类型 | 字段长度 | 是否为空 | 约束类型 |
ID | 拍买商品编号 | Int(4) | 4 | Not Null | 主键 |
menid | 发布人编号 | Int(4) | 30 | Not Null |
|
pmgoodsid | 拍买商品编号 | Int(4) | 30 | Not Null |
|
buyprice | 竞拍价格 | Int(4) | 4 | Not Null |
|
amount | 数量 | Int(4) | 4 | Not Null |
|
ok | 竞拍状态 | Varchar(50) | 50 | Not Null |
|
hjsj | 时间 | Varchar(50) | 50 | Not Null |
|
ispj | 是否评价 | Varchar(1) | 1 | Not Null |
|
公告信息表
字段名 | 字段说明 | 数据类型 | 字段长度 | 是否为空 | 约束类型 |
ID | 编号 | Int(4) | 4 | Not Null | 主键 |
title | 标题 | Varchar(100) | 30 | Not Null |
|
content | 内容 | Varchar(4000) | 4000 | Not Null |
|
INTime | 时间 | datetime | 8 | Not Null |
|
帖子信息表
字段名 | 字段说明 | 数据类型 | 字段长度 | 是否为空 | 约束类型 |
ID | 编号 | Int(4) | 4 | Not Null | 主键 |
htcontent | 内容 | TEXT | 16 | Not Null |
|
userId | 发布人ID | Int(4) | 4 | Not Null |
|
time | 时间 | datetime | 8 | Not Null |
|
tzId | 通知编号 | Int(4) | 4 | Not Null |
|
论坛模块表
字段名 | 字段说明 | 数据类型 | 字段长度 | 是否为空 | 约束类型 |
moduleid | 编号 | Int(4) | 4 | Not Null | 主键 |
modulename | 内容 | Varchar(50) | 50 | Not Null |
|
userId | 发布人ID | Int(4) | 4 | Not Null |
|
用户回复贴息信息表
字段名 | 字段说明 | 数据类型 | 字段长度 | 是否为空 | 约束类型 |
tzid | 编号 | Int(4) | 4 | Not Null | 主键 |
tztitle | 标题 | Varchar(50) | 50 | Not Null |
|
userId | 发布人ID | Int(4) | 4 | Not Null |
|
tzcontent | 内容 | text | 16 | Not Null |
|
tztime | 时间 | Varchar(50) | 50 | Not Null |
|
tztype | 类型 | Int(4) | 4 | Not Null |
|
父类别信息表
字段名 | 字段说明 | 数据类型 | 字段长度 | 是否为空 | 约束类型 |
ID | 编号 | Int(4) | 4 | Not Null | 主键 |
TypeName | 类别名称 | Varchar(50) | 50 | Not Null |
|
子类别信息表
字段名 | 字段说明 | 数据类型 | 字段长度 | 是否为空 | 约束类型 |
ID | 编号 | Int(4) | 4 | Not Null | 主键 |
superType | 父类别 | Int(4) | 4 | Not Null |
|
TypeName | 类别名称 | Varchar(50) |
| Not Null |
|
4 代码实现过程
5 主要代码
5.1 用户相关代码
package dao;import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;import bean.member;import sqlbean.SQL_Bean;public class memberDAO {private Connection con;private PreparedStatement sta;private ResultSet rs;public List findMemberAll() {List l = new ArrayList();String sql = "select id,username,truename,city,tel,email,amount,freeze,score from tb_member order by id";try {con = new SQL_Bean().getConnection();sta = con.prepareStatement(sql);rs = sta.executeQuery();while (rs.next()) {member mb = new member();mb.setId(rs.getInt(1));mb.setUsername(rs.getString(2));mb.setTruename(rs.getString(3));mb.setCity(rs.getString(4));mb.setTel(rs.getString(5));mb.setEmail(rs.getString(6));mb.setAmount(rs.getDouble(7));mb.setFreeze(rs.getInt(8));mb.setScore(rs.getInt(9));l.add(mb);}rs.close();sta.close();con.close();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return l;}public member findMemberById(int id) {member mb = null;String sql = "select id,username,truename,city,address,postcode,cardno,cardtype,tel,email,amount,score from tb_member where id=?";try {con = new SQL_Bean().getConnection();sta = con.prepareStatement(sql);sta.setInt(1, id);rs = sta.executeQuery();if (rs.next()) {mb = new member();mb.setId(rs.getInt(1));mb.setUsername(rs.getString(2));mb.setTruename(rs.getString(3));mb.setCity(rs.getString(4));mb.setAddress(rs.getString(5));mb.setPostcode(rs.getString(6));mb.setCardno(rs.getString(7));mb.setCardtype(rs.getString(8));mb.setTel(rs.getString(9));mb.setEmail(rs.getString(10));mb.setAmount(rs.getDouble(11));mb.setScore(rs.getInt(12));}rs.close();sta.close();con.close();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return mb;}public member findScoreBygoodsId(int id) {member mb = null;String sql = "select tb_member.score,tb_member.ID from pmgoods,tb_member,buygoodsinfo where buygoodsinfo.pmgoodsid = pmgoods. pmgoodsid and pmgoods.mid = tb_member.ID and buygoodsinfo.pmgoodsid=?";try {con = new SQL_Bean().getConnection();sta = con.prepareStatement(sql);sta.setInt(1, id);rs = sta.executeQuery();if (rs.next()) {mb = new member();mb.setScore(rs.getInt(1));mb.setId(rs.getInt(2));}rs.close();sta.close();con.close();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return mb;}//冻结用户 (合法用户为0 冻结为1)public int freezeMember(int id) {int i = 0;String sql = "update tb_member set freeze=1 where id=?";try {con = new SQL_Bean().getConnection();sta = con.prepareStatement(sql);sta.setInt(1, id);i = sta.executeUpdate();sta.close();con.close();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return i;}//用户解冻public int thawMember(int id) {int i = 0;String sql = "update tb_member set freeze=0 where id=?";try {con = new SQL_Bean().getConnection();sta = con.prepareStatement(sql);sta.setInt(1, id);i = sta.executeUpdate();sta.close();con.close();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return i;}//登陆时候调用这个方法 在数据库中查找用户名 和密码 与用户填写的进行对照public member findMemberByUser(String username, String password) {member mb = null;String sql = "select id,username,truename,city,address,postcode,cardno,cardtype,tel,email,amount,password,score from tb_member where username=? and password=? and freeze=0";try {con = new SQL_Bean().getConnection();sta = con.prepareStatement(sql);sta.setString(1, username);sta.setString(2, password);rs = sta.executeQuery();if (rs.next()) {mb = new member();mb.setId(rs.getInt(1));mb.setUsername(rs.getString(2));mb.setTruename(rs.getString(3));mb.setCity(rs.getString(4));mb.setAddress(rs.getString(5));mb.setPostcode(rs.getString(6));mb.setCardno(rs.getString(7));mb.setCardtype(rs.getString(8));mb.setTel(rs.getString(9));mb.setEmail(rs.getString(10));mb.setAmount(rs.getDouble(11));mb.setPassword(rs.getString(12));mb.setScore(rs.getInt(13));}rs.close();sta.close();con.close();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return mb;}//用户注册页面 信息填写完整的话 i变为1//如果信息填写不完整i仍然为0 需要重新填写public int insertMember(member m) {int i = 0;String sql = "insert into tb_member(username,truename,password,city,address,postcode,cardno,cardtype,tel,email) values(?,?,?,?,?,?,?,?,?,?)";try {con = new SQL_Bean().getConnection();sta = con.prepareStatement(sql);sta.setString(1, m.getUsername());sta.setString(2, m.getTruename());sta.setString(3, m.getPassword());sta.setString(4, m.getCity());sta.setString(5, m.getAddress());sta.setString(6, m.getPostcode());sta.setString(7, m.getCardno());sta.setString(8, m.getCardtype());sta.setString(9, m.getTel());sta.setString(10, m.getEmail());i = sta.executeUpdate();sta.close();con.close();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return i;}//用户信息更新 信息填写完整为1 未填写完整为0//提示用户重新填写用户信息public int updateMember(member m) {int i = 0;String sql = "update tb_member set truename=?,password=?,city=?,address=?,postcode=?,cardno=?,cardtype=?,tel=?,email=? where id=? and username=? and password=?";try {con = new SQL_Bean().getConnection();sta = con.prepareStatement(sql);sta.setString(1, m.getTruename());sta.setString(2, m.getPassword());sta.setString(3, m.getCity());sta.setString(4, m.getAddress());sta.setString(5, m.getPostcode());sta.setString(6, m.getCardno());sta.setString(7, m.getCardtype());sta.setString(8, m.getTel());sta.setString(9, m.getEmail());sta.setInt(10, m.getId());sta.setString(11, m.getUsername());sta.setString(12, m.getOldpassword());i = sta.executeUpdate();sta.close();con.close();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return i;}//更新用户交易金额public int updateAmount(double price, int id) {int i = 0;String sql = "update tb_member set amount=amount+? where id=?";try {con = new SQL_Bean().getConnection();sta = con.prepareStatement(sql);sta.setDouble(1, price);sta.setInt(2, id);i = sta.executeUpdate();sta.close();con.close();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return i;}public int updateScore(int score, int id) {System.out.print(score + "\t" + id);int i = 0;String sql = "update tb_member set score=? where id=?";try {con = new SQL_Bean().getConnection();sta = con.prepareStatement(sql);sta.setDouble(1, score);sta.setInt(2, id);i = sta.executeUpdate();sta.close();con.close();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return i;}//用户上传商品信息后 ispj=1 表示没有评价 当拍卖状态变为交易完成后 评价变为0public int updateStatus(int id) {int i = 0;String sql = "update buygoodsinfo set ispj=1 where pmgoodsid=?";try {con = new SQL_Bean().getConnection();sta = con.prepareStatement(sql);sta.setInt(1, id);i = sta.executeUpdate();sta.close();con.close();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return i;}//查询信誉前10显示到前台public List findmemTen(){List l=new ArrayList();String sql="select * from tb_member order by score desc limit 0,10";try {con=new SQL_Bean().getConnection();sta=con.prepareStatement(sql);rs=sta.executeQuery();while(rs.next()){member b = new member();b.setId(rs.getInt("id"));b.setUsername(rs.getString("userName"));b.setScore(rs.getInt("score"));l.add(b);}rs.close();sta.close();con.close();} catch (SQLException e) {// TODOe.printStackTrace();} catch (Exception e) {// TODOe.printStackTrace();}return l;}}
5.2 数据库连接代码
package sqlbean;import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;public class SQL_Bean{//private String url = "jdbc:sqlserver://localhost:1433;DatabaseName=db_shop";private Connection connection = null;public SQL_Bean() throws Exception {//sql//Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");Class.forName("com.mysql.jdbc.Driver"); }public Connection getConnection() throws SQLException {setConnection();return connection;}public void setConnection() throws SQLException {String password = "root";//这里修改数据库密码 // 这里修改数据库密码this.connection = DriverManager.getConnection("jdbc:mysql://localhost/db_shop?useUnicode=true&characterEncoding=utf-8","root",password);}}
5.3 论坛发贴代码
package dao;import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;import sqlbean.SQL_Bean;
import bean.bbsht;
import bean.bbsmodule;
import bean.bbstz;
import bean.member;public class bbsDAO {private Connection con;private PreparedStatement sta;private ResultSet rs;//添加模块public int addmodule(bbsmodule b){int i=0;String sql="insert into tb_bbsmodule (modulename,userid) values(?,?)";try {con=new SQL_Bean().getConnection();sta=con.prepareStatement(sql);sta.setString(1,b.getModulename());//sta.setInt(2,b.getMem().getId());//i=sta.executeUpdate();sta.close();con.close();} catch (SQLException e) {// TODO e.printStackTrace();} catch (Exception e) {// TODO e.printStackTrace();}return i;}//发帖public int addtz(bbstz bz){int i=0;String sql="insert into tb_bbstz(tztitle,userid,tzcontent,tztime,tztype) values(?,?,?,?,?)";try {con=new SQL_Bean().getConnection();sta=con.prepareStatement(sql);sta.setString(1,bz.getTztitle());// sta.setInt(2,bz.getUserId());//sta.setString(3,bz.getTzcontent());sta.setString(4, bz.getTztime());sta.setInt(5, bz.getTypeId());i=sta.executeUpdate();sta.close();con.close();} catch (SQLException e) {// TODO e.printStackTrace();} catch (Exception e) {// TODO e.printStackTrace();}return i;}//回帖public int addht(bbsht bz){int i=0;String sql="insert into tb_bbsht (htcontent,userid,time,tzid) values(?,?,?,?)";try {con=new SQL_Bean().getConnection();sta=con.prepareStatement(sql);sta.setString(1,bz.getHtcontent());// sta.setInt(2,bz.getUserId());//sta.setString(3,bz.getTime());sta.setInt(4, bz.getTzId());i=sta.executeUpdate();sta.close();con.close();} catch (SQLException e) {// TODO e.printStackTrace();} catch (Exception e) {// TODO e.printStackTrace();}return i;}//获得所有模块public List findAllModule(int cpage,int ipage){List l=new ArrayList();String sql="select * from tb_bbsmodule ";sql+=" where moduleid not in(select t.moduleid from (select moduleid";sql+=" from tb_bbsmodule order by moduleid desc limit 0,"+(cpage-1)*ipage+") as t)";sql+=" order by moduleid desc limit 0,"+ipage+"";try {con=new SQL_Bean().getConnection();sta=con.prepareStatement(sql);rs=sta.executeQuery();while(rs.next()){ bbsmodule bbsm = new bbsmodule();bbsm.setModuleid(rs.getInt("moduleid"));bbsm.setModulename(rs.getString("modulename"));memberDAO mbean=new memberDAO();member mm = mbean.findMemberById(rs.getInt("userId"));bbsm.setMem(mm);l.add(bbsm);}rs.close();sta.close();con.close();} catch (SQLException e) {// TODO e.printStackTrace();} catch (Exception e) {// TODO e.printStackTrace();}return l;}public List getModuleList(){List list=new ArrayList();String sql="select * from tb_bbsmodule";try {con=new SQL_Bean().getConnection();sta=con.prepareStatement(sql);rs=sta.executeQuery();while(rs.next()){ bbsmodule bbsm = new bbsmodule();bbsm.setModuleid(rs.getInt("moduleid"));bbsm.setModulename(rs.getString("modulename"));list.add(bbsm);}rs.close();sta.close();con.close();} catch (SQLException e) {// TODO e.printStackTrace();} catch (Exception e) {// TODO e.printStackTrace();}return list; }//得到模块数public int getCount(){int count=0;String sql="select count(*) from tb_bbsmodule";try {SQL_Bean bean = new SQL_Bean();con = bean.getConnection();sta = con.prepareStatement(sql);rs = sta.executeQuery();if(rs.next()){count = rs.getInt(1);}rs.close();sta.close();con.close();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return count;}//删除模块public int delete(int id){int i=0;String sql="delete from tb_bbsmodule where moduleid=?";try {con=new SQL_Bean().getConnection();sta=con.prepareStatement(sql);sta.setInt(1,id);i=sta.executeUpdate();sta.close();con.close();} catch (SQLException e) {// TODO e.printStackTrace();} catch (Exception e) {// TODO e.printStackTrace();}return i;}//删除帖子public int deletetz(int id){int i=0;String sql="delete from tb_bbstz where tzid=?";try {con=new SQL_Bean().getConnection();sta=con.prepareStatement(sql);sta.setInt(1,id);i=sta.executeUpdate();sta.close();con.close();} catch (SQLException e) {// TODO e.printStackTrace();} catch (Exception e) {// TODO e.printStackTrace();}return i;}//删除模块下的帖子public int deletetzbymoduleId(int id){int i=0;String sql="delete from tb_bbstz where tztype=?";try {con=new SQL_Bean().getConnection();sta=con.prepareStatement(sql);sta.setInt(1,id);i=sta.executeUpdate();sta.close();con.close();} catch (SQLException e) {// TODO e.printStackTrace();} catch (Exception e) {// TODO e.printStackTrace();}return i;}//前台论坛//查询所有帖子public List findAllTZ(int cpage,int ipage){List l=new ArrayList();String sql="select * from view_tz_type ";sql+=" where tzid not in(select t.tzid from (select tzid";sql+=" from view_tz_type order by tzid desc limit 0,"+(cpage-1)*ipage+") as t)";sql+=" order by tzid desc limit 0,"+ipage+" ";try {con=new SQL_Bean().getConnection();sta=con.prepareStatement(sql);rs=sta.executeQuery();while(rs.next()){bbstz bz = new bbstz();bz.setTypename(rs.getString("modulename"));bz.setTypeId(rs.getInt("moduleid"));bz.setTzid(rs.getInt("tzid"));bz.setTztitle(rs.getString("tztitle"));int userId= rs.getInt("userId");bz.setUserId(userId);member mm = new memberDAO().findMemberById(userId);bz.setTzcontent(rs.getString("tzcontent"));bz.setTztime(rs.getString("tztime"));bz.setUsername(mm.getUsername());bz.setMem(mm);l.add(bz);}rs.close();sta.close();con.close();} catch (SQLException e) {// TODO e.printStackTrace();} catch (Exception e) {// TODOe.printStackTrace();}return l;}//根据id查询public bbstz findtzById(int id){bbstz b=null;String sql="select * from tb_bbstz where tzid=?";try {con=new SQL_Bean().getConnection();sta=con.prepareStatement(sql);sta.setInt(1,id);rs=sta.executeQuery();if(rs.next()){b=new bbstz();memberDAO mdao = new memberDAO();b.setTzid(rs.getInt("tzid"));b.setTztitle(rs.getString("tztitle"));member mm = mdao.findMemberById(rs.getInt("userId"));b.setUsername(mm.getUsername());b.setTzcontent(rs.getString("tzcontent"));b.setTztime(rs.getString("tztime"));}rs.close();sta.close();con.close();} catch (SQLException e) {// TODO ?????? catch ??e.printStackTrace();} catch (Exception e) {// TODO ?????? catch ??e.printStackTrace();}return b;}//查询记录条数public int getCount2(){int count=0;String sql="select count(*) from tb_bbstz";try {SQL_Bean bean = new SQL_Bean();con = bean.getConnection();sta = con.prepareStatement(sql);rs = sta.executeQuery();if(rs.next()){count = rs.getInt(1);}rs.close();sta.close();con.close();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return count;}//查询所有回贴public List findAllHT(int cpage,int ipage,int id){List l=new ArrayList();System.out.println(id);String sql="select * from tb_bbsht where 1=1 and tzId="+id;sql+=" and id not in(select t.id from (select id";sql+=" from tb_bbsht order by id desc limit 0, "+(cpage-1)*ipage+") as t)";sql+=" order by id desc limit 0,"+ipage+" ";System.out.println(sql);try {con=new SQL_Bean().getConnection();sta=con.prepareStatement(sql);rs=sta.executeQuery();while(rs.next()){bbsht bz = new bbsht();//bz.setTztitle(rs.getString("tztitle"));bz.setHtcontent(rs.getString("htcontent"));memberDAO mbean=new memberDAO();member mm = mbean.findMemberById(rs.getInt("userId"));bz.setUsername(mm.getUsername());bz.setTime(rs.getString("time"));;l.add(bz);}rs.close();sta.close();con.close();} catch (SQLException e) {// TODO e.printStackTrace();} catch (Exception e) {// TODOe.printStackTrace();}return l;}public int getCount3(int id){int count=0;String sql="select count(*) from tb_bbsht where tzid=?";try {SQL_Bean bean = new SQL_Bean();con = bean.getConnection();sta = con.prepareStatement(sql);sta.setInt(1, id);rs = sta.executeQuery();if(rs.next()){count = rs.getInt(1);}rs.close();sta.close();con.close();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return count;}//获取用户发帖数public int getCount4(int id){int count=0;String sql="select count(*) from tb_bbstz where userId=?";try {SQL_Bean bean = new SQL_Bean();con = bean.getConnection();sta = con.prepareStatement(sql);sta.setInt(1, id);rs = sta.executeQuery();if(rs.next()){count = rs.getInt(1);}rs.close();sta.close();con.close();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return count;}}