以最简单的方式实现jsp+mysql分页

刚开始弄 ,目前分页是在前台jsp中实现的 与bean相比 这样比较容易一些

先把代码贴出来 正在研究怎么样用bean实现分页等弄好了 再贴代码

下面说下分页理论 select * from message order by time desc limit begin,size

begin 数据记录从第几条开始begin=(当前页数-1)*size

size 每页的记录数

下面是连接数据库的javabean;

[code] package bean;

import java.sql.*;

public class MyDb{

 private Statement stmt;

 private Connection conn=null;

 privateResultSet rs=null;

 public void connection(String db_name,String user,String pwd) throwsException{

 Class.forName("com.mysql.jdbc.Driver");

 String url="jdbc:mysql://localhost:3306/" + db_name;

 conn=DriverManager.getConnection(url,user,pwd);

 stmt=conn.createStatement();

}

 public ResultSet query(String sql) throws Exception{

 rs=stmt.executeQuery(sql);

 return rs;

}

 public ResultSet query(String sql,int begin,int size) throws Exception{

 String s=" limit " + begin + "," +size;

 sql=sql + s;

 rs=stmt.executeQuery(sql);

 return rs;

}

 public int update(String sql) throwsException{

 int n=0;

 n=stmt.executeUpdate(sql);

 return n;

}

 public boolean delete(String sql) throwsException{

 0ff">boolean flag=false;

 flag=stmt.execute(sql);

 return flag;

}

}

[/code]

下面是jsp的代码;

[code] <jsp:useBean id="db" class="bean.MyDb" scope="page" />

<%

 int page_count;//总页数

 int p;//当前面号

 int size=3;//每页记录数

 int result_count;//总记录数

 int begin;//当前页第一条记录索引号

ResultSet rs=null;

String page_s=request.getParameter("page");

 if(page_s==null)page_s="1";

db.connection("test","root","root");

String sql="select count(*) from message";

rs=db.query(sql);

rs.next();

result_count=rs.getInt(1);

page_count=(result_count + size - 1)/size;

p=Integer.parseInt(page_s);

 out.println("总记录数为:" + result_count + " 每页记录数为:" + size + " 总页数为:" + page_count + " 当前是第" + p + "页");

sql="select * from message order by time desc";

begin=(p-1)*size;

rs=db.query(sql,begin,size);

while(rs.next()){

%>

<table>

<tr>

 <tdwidth="200"><%=rs.getString(1)%></td>

<td width="200"><%=rs.getString(2)%></td>

</tr>

<tr>

<td><%=rs.getString(3)%></td>

<td><%=rs.getString(4)%></td>

</tr>

<tr><td colspan="2"><%=rs.getString(5)%></td></tr>

<tr><td colspan="2"><hr /></td></tr>

</table>

<%

}

 if(p>1)out.println("<a href=test.jsp?page=" + (p-1) + ">上一页</a>");

 if(p<page_count)out.println("<a href=test.jsp?page=" + (p+1) + ">下一页</a>");

%>

[/code]

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代码很粗糙, 将就着看吧但是很适合新手学习.. 完全是自己写的..

等把bean写好了 传上来大家分享.