JDBC连接Access数据库的几种方式
JDBC 连接 Access 数据库的几种方式 前几天老师让作几个JSP连接数据库的例子,而且连接的数据库是Access数据库,对于这个数据库自己也不是太了解,后来了解到学习JDBC的时候,连接access是很方便的,很容易的,但是在连接的时候也出现了问题,但是还是解决了
JDBC连接Access数据库的几种方式
前几天老师让作几个JSP连接数据库的例子,而且连接的数据库是Access数据库,对于这个数据库自己也不是太了解,后来了解到学习JDBC的时候,连接access是很方便的,很容易的,但是在连接的时候也出现了问题,但是还是解决了。接下来总结一下常用的几种连接方式。
例如有如下的Access数据库student,表basic,以及6条记录,现在通过几种方式在Jsp中将他们的数据显示出来。如图所示:
对于几种连接Access数据库的方式,基本上都是基于JDBC-ODBC方式的,当然也有纯JDBC驱动的方式。这里我暂时就不说了。对于这几种方式,除了取得连接之处不同外,其他的代码都是一样的。所以这里先写出取得连接的几种方式,然后再用完整的代码进行显示。
方式一:通过JDBC-ODBC方式桥连直接连接:
1、对于这种方式,首先要建立ODBC数据源,我的系统是Win7系统,所以依次选择“控制面板----管理工具----数据源(ODBC)”,打开数据源管理器,如图所示:
2、在“系统DSN”选项卡中,单击“添加”按钮,打开创建数据源对话框,选择Access数据库的驱动程序“Microsoft Access Driver(*.mdb)”如图所示:
3、单击完成按钮,出现如下对话框,在数据源名中输入数据源的名字“JDBC-ODBC”,单击选择按钮,选择要操作的数据库“student.mdb”,单击确定按钮完成数据源的配置。如图所示:
4、数据源配置好了,就可以写获取连接的代码了,如下所示:
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url = "jdbc:odbc:JDBC-ODBC";
Connection con = DriverManager.getConnection(url);
以上的三行代码就是通过JDBC-ODBC连接Access数据库的关键代码。这种方式连接可以很方便的记忆连接的url代码,这是很有用的。后面的代码就是正常写了。
方式二:通过数据库所在的绝对路径方式连接
上面说过这里的几种方式都是基于JDBC-ODBC方式。所以加载驱动的Class.forName()中的参数都是“sun.jdbc.odbc.JdbcOdbcDriver”。对于这种方式我将student.mdb文件放在了e盘的根目录下,在使用的时候,直接写上该数据库的绝对路径就行了。获取连接的代码如下所示:
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url = "jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ="+"e://student.mdb ";
Connection con = DriverManager.getConnection(url);
对于这种方式不用配置数据源,虽然代码比较多,但是很好理解的。也是很常用的。
方式三:通过请求来获取数据库的绝对路径方式连接
对于这种方式,我个人认为很适合在Java Web应用中使用,将做好的应用给别人,别人也可以使用。我将该数据库文件放在了Web应用的根路径下。那么动态的获取连接的代码如下所示:
String path = application.getRealPath("/index.jsp");
path = path.substring(0,path.lastIndexOf("\\"))+"\\";
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url = "jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ="+path+"student.mdb ";
Connection con = DriverManager.getConnection(url);
以上便是三种方式获取连接。接下来便是显示的代码了。代码如下所示:
<title>Access</title>
学号 | 姓名 | 年龄 | 地址 | 语文 | 数学 | 英语 |
---|---|---|---|---|---|---|
运行JSP结果如下所示:
当将连接改为第二种方式的时候还是好使的,JSP代码如下所示:
<title>JDBC连接Access数据库的第二种方式</title>
学号 | 姓名 | 年龄 | 地址 | 语文 | 数学 | 英语 |
---|---|---|---|---|---|---|
运行JSP结果如下所示:
当将连接改为第三种方式的时候还是好使的,JSP代码如下所示:
<title>JDBC连接Access数据库的第三种方式</title>
学号 | 姓名 | 年龄 | 地址 | 语文 | 数学 | 英语 |
---|---|---|---|---|---|---|
运行JSP结果如下所示:
对于这种方式我的项目的目录结构如下所示:
从上述的三种方式可以知道,无论使用哪一种都是好使的。
本篇博客的有关资料我已经上传了,如果想下载本篇博客,可以到CSDN上下载,下载地址为:
http://download.csdn.net/detail/long2010yu2010/4731590

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics











How to configure Zend in Apache? The steps to configure Zend Framework in an Apache Web Server are as follows: Install Zend Framework and extract it into the Web Server directory. Create a .htaccess file. Create the Zend application directory and add the index.php file. Configure the Zend application (application.ini). Restart the Apache Web server.

Oracle is not only a database company, but also a leader in cloud computing and ERP systems. 1. Oracle provides comprehensive solutions from database to cloud services and ERP systems. 2. OracleCloud challenges AWS and Azure, providing IaaS, PaaS and SaaS services. 3. Oracle's ERP systems such as E-BusinessSuite and FusionApplications help enterprises optimize operations.

MySQL is suitable for web applications and content management systems and is popular for its open source, high performance and ease of use. 1) Compared with PostgreSQL, MySQL performs better in simple queries and high concurrent read operations. 2) Compared with Oracle, MySQL is more popular among small and medium-sized enterprises because of its open source and low cost. 3) Compared with Microsoft SQL Server, MySQL is more suitable for cross-platform applications. 4) Unlike MongoDB, MySQL is more suitable for structured data and transaction processing.

MySQL efficiently manages structured data through table structure and SQL query, and implements inter-table relationships through foreign keys. 1. Define the data format and type when creating a table. 2. Use foreign keys to establish relationships between tables. 3. Improve performance through indexing and query optimization. 4. Regularly backup and monitor databases to ensure data security and performance optimization.

VprocesserazrabotkiveB-enclosed, Мнепришлостольностьсясзадачейтерациигооглапидляпапакробоглесхетсigootrive. LEAVALLYSUMBALLANCEFRIABLANCEFAUMDOPTOMATIFICATION, ČtookazaLovnetakProsto, Kakaožidal.Posenesko

Apache server is a powerful web server software that acts as a bridge between browsers and website servers. 1. It handles HTTP requests and returns web page content based on requests; 2. Modular design allows extended functions, such as support for SSL encryption and dynamic web pages; 3. Configuration files (such as virtual host configurations) need to be carefully set to avoid security vulnerabilities, and optimize performance parameters, such as thread count and timeout time, in order to build high-performance and secure web applications.

The Nginx current limit problem can be solved by: use ngx_http_limit_req_module to limit the number of requests; use ngx_http_limit_conn_module to limit the number of connections; use third-party modules (ngx_http_limit_connections_module, ngx_http_limit_rate_module, ngx_http_access_module) to implement more current limit policies; use cloud services (Cloudflare, Google Cloud Rate Limiting, AWS WAF) to DD

MySQL's real-world applications include basic database design and complex query optimization. 1) Basic usage: used to store and manage user data, such as inserting, querying, updating and deleting user information. 2) Advanced usage: Handle complex business logic, such as order and inventory management of e-commerce platforms. 3) Performance optimization: Improve performance by rationally using indexes, partition tables and query caches.
