创建数据库中的表：
CREATE TABLE `websites` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` char(20) NOT NULL DEFAULT '' COMMENT '站点名称',
`url` varchar(255) NOT NULL DEFAULT '',
`alexa` int(11) NOT NULL DEFAULT '0' COMMENT 'Alexa 排名',
`country` char(10) NOT NULL DEFAULT '' COMMENT '国家',
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=10 DEFAULT CHARSET=utf8;
插入数据：
INSERT INTO `websites` VALUES ('1', 'Google', 'https://www.google.cm/', '1', 'USA'), ('2', '淘宝', 'https://www.taobao.com/', '13', 'CN'), ('3', '百度', 'http://www.baidu.com', '5892', ''), ('4', '微博', 'http://weibo.com/', '20', 'CN'), ('5', '雨落秋垣', 'https://ceet-edu.top/', '3', 'USA');
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ page import="java.io.*,java.util.*,java.sql.*"%> <%@ page import="javax.servlet.http.*,javax.servlet.*" %> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql"%> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>SELECT操作</title> </head> <body> <!-- JDBC 驱动名及数据库 URL 数据库的用户名与密码，需要根据自己的设置 useUnicode=true&characterEncoding=utf-8 防止中文乱码 --> <sql:setDataSource var="snapshot" driver="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost:3306/db_database03?useUnicode=true&characterEncoding=utf-8" user="root" password="359129127"/> <sql:query dataSource="${snapshot}" var="result"> SELECT * from websites; </sql:query> <h1>JSP 数据库实例 - SELECT操作</h1> <table border="1" width="100%"> <tr> <th>ID</th> <th>站点名</th> <th>站点地址</th> <th>操作</th> </tr> <c:forEach var="row" items="${result.rows}"> <tr> <td><c:out value="${row.id}"/></td> <td><c:out value="${row.name}"/></td> <td><c:out value="${row.url}"/></td> <td> <a href="UPDATE操作.jsp">修改</a> </td> </tr> </c:forEach> </table> </body> </html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ page import="java.io.*,java.util.*,java.sql.*"%> <%@ page import="javax.servlet.http.*,javax.servlet.*" %> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql"%> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>DELETE操作</title> </head> <body> <!-- JDBC 驱动名及数据库 URL 数据库的用户名与密码，需要根据自己的设置 useUnicode=true&characterEncoding=utf-8 防止中文乱码 --> <sql:setDataSource var="snapshot" driver="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost:3306/db_database03?useUnicode=true&characterEncoding=utf-8" user="root" password="359129127"/> <!-- 删除 ID 为 11 的数据 --> <sql:update dataSource="${snapshot}" var="count"> DELETE FROM websites WHERE Id = ? <sql:param value="${11}" /> </sql:update> <sql:query dataSource="${snapshot}" var="result"> SELECT * from websites; </sql:query> <h1>JSP 数据库实例 - DELETE操作</h1> <table border="1" width="100%"> <tr> <th>ID</th> <th>站点名</th> <th>站点地址</th> </tr> <c:forEach var="row" items="${result.rows}"> <tr> <td><c:out value="${row.id}"/></td> <td><c:out value="${row.name}"/></td> <td><c:out value="${row.url}"/></td> </tr> </c:forEach> </table> </body> </html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ page import="java.io.*,java.util.*,java.sql.*"%> <%@ page import="javax.servlet.http.*,javax.servlet.*" %> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql"%> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>INSERT操作</title> </head> <body> <!-- JDBC 驱动名及数据库 URL 数据库的用户名与密码，需要根据自己的设置 useUnicode=true&characterEncoding=utf-8 防止中文乱码 --> <sql:setDataSource var="snapshot" driver="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost:3306/db_database03?useUnicode=true&characterEncoding=utf-8" user="root" password="359129127"/> <!-- 插入数据 --> <sql:update dataSource="${snapshot}" var="result"> INSERT INTO websites (name,url,alexa,country) VALUES ('菜鸟教程移动站', 'http://m.runoob.com', 5093, 'CN'); </sql:update> <sql:query dataSource="${snapshot}" var="result"> SELECT * from websites; </sql:query> <h1>JSP 数据库实例 - INSERT操作</h1> <table border="1" width="100%"> <tr> <th>ID</th> <th>站点名</th> <th>站点地址</th> </tr> <c:forEach var="row" items="${result.rows}"> <tr> <td><c:out value="${row.id}"/></td> <td><c:out value="${row.name}"/></td> <td><c:out value="${row.url}"/></td> </tr> </c:forEach> </table> </body> </html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ page import="java.io.*,java.util.*,java.sql.*"%> <%@ page import="javax.servlet.http.*,javax.servlet.*" %> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql"%> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>UPDATE操作</title> </head> <body> <!-- JDBC 驱动名及数据库 URL 数据库的用户名与密码，需要根据自己的设置 useUnicode=true&characterEncoding=utf-8 防止中文乱码 --> <sql:setDataSource var="snapshot" driver="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost:3306/db_database03?useUnicode=true&characterEncoding=utf-8" user="root" password="359129127"/> <!-- 修改 ID 为 3 的名字： RUNOOB --> <c:set var="SiteId" value="3"/> <sql:update dataSource="${snapshot}" var="count"> UPDATE websites SET name = 'RUNOOB' WHERE Id = ? <sql:param value="${SiteId}" /> </sql:update> <sql:query dataSource="${snapshot}" var="result"> SELECT * from websites; </sql:query> <h1>JSP 数据库实例 - UPDATE操作</h1> <table border="1" width="100%"> <tr> <th>ID</th> <th>站点名</th> <th>站点地址</th> </tr> <c:forEach var="row" items="${result.rows}"> <tr> <td><c:out value="${row.id}"/></td> <td><c:out value="${row.name}"/></td> <td><c:out value="${row.url}"/></td> </tr> </c:forEach> </table> </body> </html>