Myeclipse10.7连接SQLServer数据库技术
(1)学习数据库的时候最恼火的是不知道怎么连接,不想VS那样在WPF中我们直接使用函数即可调用数据库,但是在java中我们要使用JDBC技术, 因此我们的方法肯定要复杂一些!看了很多博客明文,试了很多方法还是不成功,最后看了《JavaWeb技术详解》恍然大悟,
(1)学习数据库的时候最恼火的是不知道怎么连接,不想VS那样在WPF中我们直接使用函数即可调用数据库,但是在java中我们要使用JDBC技术,
因此我们的方法肯定要复杂一些!看了很多博客明文,试了很多方法还是不成功,最后看了《JavaWeb技术详解》恍然大悟,特给大家分享一下!
(2)首先看一下我的项目机构:
其中带有标出来的就是需要准备的;lib目录下的为jar包网上下载的;ManageUsers为自己编写的测试程序!
(3)如果你已经准备好了lib目录下的四个jar包则开始配置:
点击项目右键--properies---Java Bulid Path -----Libraries ---Add JARs ---弹出的框框点击你的项目--找到lib目录 选中四个jar包确定----在ok!
(4)然后配置你的sql server ;
找到 sql server configurationmanager 找到1 乳沟看到TCP/IP为 “已禁用”则改为 我下边所示 启用即可!
(5)演示的代码ManageUsers(已配置好servlet的xml配置)
package com.lc.view; import java.io.IOException; import java.io.PrintWriter; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class ManageUsers extends HttpServlet{ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{ response.setContentType("text/html;charset=utf-8"); PrintWriter out = response.getWriter(); out.println("<h1 id="管理用户">管理用户</h1>"); Connection con = null; ResultSet rs = null; PreparedStatement ps = null; try { // 1.加载驱动 Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver"); // 2.得到连接 con=DriverManager.getConnection("jdbc:microsoft:sqlserver://127.0.0.1:1433;databasename=DBName","username","password");/*数据库名用户名密码我改成我的了*/ //3.创建PreparedStatement ps = con.prepareStatement("select * from users"); rs = ps.executeQuery(); out.println("<table border=1 margin=auto>"); out.println("<tr><td>id</td><td>用户名</td><td>email</td><td>grade</td></tr>"); //循环显示所有用户信息 while(rs.next()) { //注意我去的顺序是1 2 4 5 因为的在数据库中的第三个 为密码 没有取出 所以为 1 2 4 5 如果不注意这点会报错的! out.println("<tr><td>"+rs.getInt(1)+ "</td><td>"+rs.getString(2)+ "</td><td>"+rs.getString(4)+ "</td><td>"+rs.getInt(5)+ "</td><tr>"); } out.println("</table>"); //5.根据结果处理 } catch (Exception ex) { ex.printStackTrace(); } finally { try { if (rs != null) { rs.close(); } if (ps != null) { ps.close(); } if (con != null) { con.close(); } } catch (Exception ex) { ex.printStackTrace(); } } out.close(); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doGet(request, response); } }

(7)到此已经成功!如果你在这方面遇到问题的话 欢迎提问 共同学习!
另外 如果遇到连接数据库的问题 欢迎访问我整理的一些错误处理方法:http://blog.csdn.net/xlgen157387/article/details/39055085
最后 祝你成功!

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