search

Home >php教程 >PHP开发 >Summary of examples of common methods for jsp+mysql database operations

Summary of examples of common methods for jsp+mysql database operations

高洛峰
高洛峰Original
2016-12-27 13:41:362059browse

The examples in this article describe common methods of jsp+mysql database operations. Share it with everyone for your reference. The details are as follows:

1. View: 

<%@ page contentType="text/html;charset=GB2312" %> 
<%@ page import="java.sql.*" %> 
<HTML><style type="text/css">
<!--
body {
  background-color: #99CCFF;
}
-->
</style> 
<BODY>
<font color="#FFFFFF"> 
<center>
<% Connection con; 
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection("jdbc:mysql://localhost:3306/student","root","123456");
Statement sql; 
ResultSet rs; 
try
{ 
sql=con.createStatement(); 
rs=sql.executeQuery("SELECT * FROM student");
out.print("<Table Border style=&#39;font-size: 10pt&#39;>"); 
out.print("<TR><td colspan=5 align=center>考生数据</td></tr>"); 
out.print("<TR><td colspan=5 align=center><a href=&#39;add.jsp&#39; target=&#39;_self&#39;>添加考生信息</a></td></tr>"); 
out.print("<TR>"); 
out.print("<Td width=50 >"+"姓名"); 
out.print("<Td width=100 >"+"年龄"); 
out.print("<Td width=100>"+"出生日期"); 
out.print("<Td width=100 colspan=2>"+"操作"); 
out.print("</TR>"); 
while(rs.next()) 
{ out.print("<TR>"); 
out.print("<TD >"+rs.getString(2)+"</TD>"); 
out.print("<TD >"+rs.getString(3)+"</TD>"); 
out.print("<TD >"+rs.getString(4)+"</TD>"); 
String idstr=rs.getString(1);
out.print("<TD><a href=&#39;delete.jsp?id="+idstr+"&#39;>删除</a></TD>"); 
out.print("<TD><a href=&#39;update.jsp?id="+idstr+"&#39;>修改</a></TD>"); 
out.print("</TR>") ; 
}
out.print("</Table>"); 
con.close(); 
} 
catch(SQLException e1) 
{ 
out.print("SQL异常！！！！"); 
} 
%> 
</center>
</BODY> 
</HTML>

2. add Add: 

<%@ page contentType="text/html;charset=gb2312" %>
<HTML><HEAD>
<style type="text/css">
<!--
body {
  background-image: url();
  background-color: #CCCCFF;
}
.STYLE5 {font-family: "Courier New", Courier, monospace; font-size: 14px; }
.STYLE6 {
  font-family: "Courier New", Courier, monospace;
  font-size: 24px;
}
-->
</style>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"></HEAD>
<BODY>
<Font size=2>
<p align="center" class="STYLE6">添加考生信息</p>
<CENTER>
<FORM action="insert.jsp" name=form>
<table>
  <tr><td height="36"><span class="STYLE5">姓名:</span></td>
  <td><Input name="name" type=text size="15" ></td></tr>
  <tr>
   <td height="36"><span class="STYLE5">年龄:</span></td>
  <td><Input name="age" type=text size="15"></td></tr>
  <tr>
   <td height="36"><span class="STYLE5">出生年月:</span></td>
  <td><Input name="birth" type=text size="15"></td></tr>
 </table>
 <table width="165">
  <tr><td width="42" wnameth="42"><Input type=submit name="g" value="添加"></td>
   <td width="28" wnameth="50"> </td>
   <td width="42" wnameth="50"><Input type="reset" name="h" value="重置"></td>
   <td width="33" wnameth="42"> </td>
  </tr>
</table>
</Form></CENTER>
</Body></HTML>

3. delete Delete: 

<%@ page contentType="text/html;charset=gb2312" %> 
<%@ page import="java.sql.*" %> 
<html> 
<head> 
<title>删除操作</title> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"><style type="text/css">
<!--
body {
  background-color: #FFCCFF;
}
-->
</style></head> 
<body> 
<center>
<% Connection con; 
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection("jdbc:mysql://localhost:3306/student","root","123456");
Statement stmt; 
Statement s; 
ResultSet rs; 
String id=request.getParameter("id");
try
{ 
stmt=con.createStatement();
String sql="delete from student where id="+id; 
stmt.executeUpdate(sql); 
s=con.createStatement(); 
rs=s.executeQuery("SELECT * FROM student"); 
out.print("<Table Border style=&#39;font-size: 10pt&#39;>"); 
out.print("<TR><td colspan=5 align=center>考生数据</td></tr>");
out.print("<TR><td colspan=5 align=center><a href=&#39;add.jsp&#39; target=&#39;_self&#39;>添加考生信息</a></td></tr>"); 
out.print("<TR>"); 
out.print("<Td width=50 >"+"姓名"); 
out.print("<Td width=100 >"+"年龄"); 
out.print("<Td width=100>"+"出生日期"); 
out.print("<Td width=100 colspan=2>"+"操作"); 
out.print("</TR>"); 
while(rs.next()) 
{ out.print("<TR>"); 
out.print("<TD >"+rs.getString(2)+"</TD>"); 
out.print("<TD >"+rs.getString(3)+"</TD>"); 
out.print("<TD >"+rs.getString(4)+"</TD>"); 
String idstr=rs.getString(1);
out.print("<TD >"+idstr+"</TD>"); 
out.print("<TD><a href=&#39;delete.jsp?id="+idstr+"&#39;>删除</a></TD>"); 
out.print("<TD><a href=&#39;update.jsp?id="+idstr+"&#39;>修改</a></TD>"); 
out.print("</TR>") ; 
} 
out.print("</Table>"); 
con.close(); 
} 
catch(SQLException e1) 
{ 
out.print("SQL异常！！！！"); 
} 
%>
</center>
</body> 
</html>

4. update Example 1: 

<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<style type="text/css">
<!--
body {
  background-color: #FFCCFF;
}
-->
</style></head>
<body>
<%String id=request.getParameter("id");
 Connection con; 
 String name=null;
 String age=null;
 String birth=null;
 String id1=null;
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection("jdbc:mysql://localhost:3306/student","root","123456");
Statement sql; 
ResultSet rs; 
try
{ 
sql=con.createStatement(); 
rs=sql.executeQuery("SELECT * FROM student");
while(rs.next()) 
{ 
 name=rs.getString(2);
 age=rs.getString(3);
 birth=rs.getString(4);
 id1=rs.getString(1);
}
con.close(); 
} 
catch(SQLException e1) 
{ 
out.print("SQL异常！！！！"); 
} 
%>
<center>
<form action="update2.jsp">
<center>
 <p>  </p>
 <p>姓名：
  <input name="name" type="text" size="15" value="<%=name%>">
 </p>
 <p>
 年龄：
  <input name="age" type="text" size="15" value="<%=age%>">
 </p>
 <p>出生日期：
  <input name="birth" type="text" size="15" value="<%=birth%>">
  <input name="id1" type="hidden" value="<%=id1%>" />
</p>
 <p><input name="g" type="submit" value="修改">     <input name="h" type="reset" value="重置"></p>
</form>
</center>
</body>
</html>

5. update Example 2: 

<%@ page contentType="text/html;charset=gb2312" %>
<%@ page import="java.sql.*" %> 
<%
String name=request.getParameter("name");
String age=request.getParameter("age");
String birth=request.getParameter("birth");
String id1=request.getParameter("id1");
System.out.println(id1);
Connection con=null;
try
{ 
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection("jdbc:mysql://localhost:3306/student","root","123456");
Statement sql; 
sql=con.createStatement(); 
String sql2="update student set name=&#39;"+name+"&#39;,age=&#39;"+age+"&#39;,birth=&#39;"+birth+"&#39; where id="+id1;
System.out.print(sql2);
int s=sql.executeUpdate(sql2);
}
catch(Exception e){
System.out.println(e);
}
%>
恭喜你，修改成功！<br />
<a href="chakan.jsp">查看</a>

6. insert insert 

<%@ page contentType="text/html;charset=gb2312" %>
<%@ page import="java.sql.*" %> 
<%
String name=request.getParameter("name");
String age=request.getParameter("age");
String birth=request.getParameter("birth");
Connection con=null;
try
{ 
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection("jdbc:mysql://localhost:3306/student","root","123456");
Statement sql; 
sql=con.createStatement(); 
String sql2="insert into student(name,age,birth) values(&#39;"+name+"&#39;,&#39;"+age+"&#39;,&#39;"+birth+"&#39;)";
System.out.print(sql2);
int s=sql.executeUpdate(sql2);
}
catch(Exception e){
System.out.println(e);
}
%>
恭喜你，添加成功！<br />
<a href="chakan.jsp">查看</a>

7. Create database 

/*
MySQL Data Transfer
Source Host: localhost
Source Database: student
Target Host: localhost
Target Database: student
Date: 2009-3-27 13:24:01
*/
SET FOREIGN_KEY_CHECKS=0;
create database student;
use student;
-- ----------------------------
-- Table structure for student
-- ----------------------------
CREATE TABLE `student` (
 `id` int(11) NOT NULL auto_increment,
 `name` varchar(255) default NULL,
 `age` varchar(255) default NULL,
 `birth` varchar(255) default NULL,
 PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=gbk;

I hope this article will help everyone’s JSP Programming helps.

For more jsp+mysql database operation examples and summary of common methods and related articles, please pay attention to the PHP Chinese website!

Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：Joomla database operation sample codeNext article：Joomla database operation sample code

Related articles

See more