jsp+oracle实现数据库内容以表格形式在前台显示（包含分页）

时间：2022-09-20 20:33:01

jsp+oracle实现数据库内容以表格形式在前台显示（包含分页）

 

 

在文件夹内新增list_emp.jsp

 

代码如下：

 

 

 

  1 <%@ page contentType="text/html" pageEncoding="GBK"%>  
  2 <%@ page import="java.sql.*"%>  
  3 <html>  
  4 <head><title>java study</title></head>  
  5 <body>  
  6 <%!  
  7     //定义数据库驱动程序  
  8     public String DBDRIVER="oracle.jdbc.driver.OracleDriver";  
  9     //数据库连接地址  
 10     public String DBURL="jdbc:oracle:thin:@localhost:1521:yy";  
 11     public String DBUSER="scott";  
 12     public String DBPASS="tiger";  
 13   
 14 %>  
 15 <%  
 16     Connection conn=null;  
 17     PreparedStatement pstmt=null;  
 18     ResultSet rs=null;  
 19 %>  
 20 <%  
 21 try{  
 22     Class.forName(DBDRIVER);  
 23     conn=DriverManager.getConnection(DBURL,DBUSER,DBPASS);  
 24     int pageSize=3;  
 25     int pageNow=1;//默认显示第一页  
 26     int rowCount=0;//总笔数  
 27     int pageCount=0;  
 28     String s_pageNow=(String)request.getParameter("pageNow");  
 29     if(s_pageNow!=null){  
 30         pageNow = Integer.parseInt(s_pageNow);  
 31     }  
 32     String sql1 = "select count(*) from emp";  
 33     pstmt=conn.prepareStatement(sql1);  
 34     rs=pstmt.executeQuery();  
 35     if(rs.next()){  
 36         rowCount = rs.getInt(1);  
 37     }  
 38     if(rowCount%pageSize==0){  
 39         pageCount = rowCount/pageSize;  
 40     }else{  
 41         pageCount = rowCount/pageSize + 1;  
 42     }  
 43     String sql="SELECT empno,ename,job,hiredate,sal FROM (select a1.*,rownum rn from (select * from emp order by sal desc) a1 WHERE  rownum<="+pageSize*pageNow+") where  rn>="+((pageNow-1)*pageSize+1);  
 44     pstmt=conn.prepareStatement(sql);  
 45     rs=pstmt.executeQuery();  
 46 %>  
 47 <center>  
 48     <table border="1" width="80%">  
 49         <tr>  
 50             <td>雇员编号</td>  
 51             <td>雇员姓名</td>  
 52             <td>雇员工作</td>  
 53             <td>雇员日期</td>  
 54             <td>雇员工资</td>  
 55         </tr>  
 56 <%  
 57     while(rs.next()){  
 58         int empno=rs.getInt(1);  
 59         String ename=rs.getString(2);  
 60         String job=rs.getString(3);  
 61         java.util.Date date=rs.getDate(4);  
 62         float sal=rs.getFloat(5);  
 63 %>  
 64         <tr>  
 65             <td><%=empno%></td>  
 66             <td><%=ename%></td>  
 67             <td><%=job%></td>  
 68             <td><%=date%></td>  
 69             <td><%=sal%></td>  
 70         </tr>  
 71 <%  
 72     }  
 73 %>  
 74     </table>  
 75 <form   Action= ""   method= "post">   
 76 <%    
 77 for(int i=1;i<=pageCount;i++){   
 78     out.println("<a href=list_emp.jsp?pageNow="+i+">["+i+"]</a>");   
 79 }   
 80 if(pageNow != 1){   
 81     out.println( " <a  href=list_emp.jsp?pageNow=1>首页</a> ");   
 82     out.println( " <a   href=list_emp.jsp?pageNow="+(pageNow - 1)+">上一页</a> ");   
 83 }   
 84 if(pageNow != pageCount){   
 85     out.println( " <a   href= list_emp.jsp?pageNow="+ (pageNow + 1)+"> 下一页</a>");   
 86     out.println( " <a   href= list_emp.jsp?pageNow="+ pageCount+"> 最后一页</a>");   
 87 }   
 88 %>  
 89 </form>  
 90 </center>  
 91 <%  
 92 }catch(Exception e){  
 93     System.out.println(e);  
 94 }  
 95 finally{  
 96     try{  
 97         rs.close();  
 98         pstmt.close();  
 99         conn.close();  
100     }catch(Exception e){  
101         System.out.println(e);  
102     }  
103 }  
104 %>  
105 </body>  
106 </html>

来源于 ：http://blog.csdn.net/josephiney/article/details/6989841

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