JSP MySQL JSP连接MySQL

JSP MySQL JSP连接MySQL

2007-04-13 14:51

1.先装好ＪＤＫ　ex：C:/j2sdk1.4.2 2.再装TomCat     ex：C:/Tomcat 5.0 3.下载　JDBC 驱动　 　http://mysql.easynet.be/Downloads/Connector-J/mysql-connector-java-3.1.14.zip 　下载就直接解压，里面有一个　mysql-connector-java-3.1.14-bin.jar　文件 　在 C:/　建立一个　mysqlforjdbc　文件夹，将　mysql-connector-java-3.1.14-bin.jar　复制到这个文件夹中. 　再将　mysql-connector-java-3.1.14-bin.jar　复制到　C:/j2sdk1.4.2/lib　中 　再将　mysql-connector-java-3.1.14-bin.jar　复制到　C:/Tomcat 5.0/common/lib　和　C:/Tomcat 5.0/shared/lib　中 4.设置环境变量 5.执行代码，输出结果 在　C:/Tomcat 5.0/webapps/ROOT　中新建　test_mysql.jsp　测试文件 <%@ page contentType="text/html; charset=gb2312" %> <%@ page language="java" %> <%@ page import="com.mysql.jdbc.Driver" %> <%@ page import="java.sql.*" %> <% //驱动程序名 String driverName="com.mysql.jdbc.Driver"; //数据库用户名 String userName="root"; //密码 String userPasswd=""; //数据库名 String dbName="ex"; //表名 String tableName="post"; //联结字符串 String url="jdbc:mysql://localhost/"+dbName+"?user="+userName+"&password="+userPasswd; Class.forName("com.mysql.jdbc.Driver").newInstance(); Connection connection=DriverManager.getConnection(url); Statement statement = connection.createStatement(); String sql="SELECT * FROM "+tableName; ResultSet rs = statement.executeQuery(sql); //获得数据结果集合 ResultSetMetaData rmeta = rs.getMetaData(); //确定数据集的列数，亦字段数 int numColumns=rmeta.getColumnCount(); out.print("id"); out.print("| "); out.print("title"); out.print("| "); out.print("comment "); out.print(" "); while(rs.next()) { out.print(rs.getString(1)); out.print("   |   "); out.print(rs.getString(2)); out.print("   |   "); out.print(rs.getString(3)); out.print(" "); } out.print(" "); out.print("数据库操作成功，恭喜你"); rs.close(); statement.close(); connection.close(); %>