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如何使用JSP访问MySQL数据库_MySQL

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Release: 2016-06-01 14:09:02
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  import ="java.util.*"
import ="java.io.*"
contentType="text/html; charset=gb2312"
%>


使用MYsql数据库




使用JSP读取Mysql数据库


String host="localhost"; //数据库主机
String database="pinghui"; //数据库名
String user="test"; //用户名
String pass=""; //口令
%>java.sql.Statement sqlStmt; //语句对象
java.sql.ResultSet sqlRst; //结果集对象
//登记JDBC驱动对象
Class.forName ("org.gjt.mm.mysql.Driver").newInstance ();
//连接数据库
sqlConn= java.sql.DriverManager.getConnection ("jdbc:mysql://"+host+"/"+database,user,pass);
//创建语句对象
sqlStmt=sqlConn.createStatement (java.sql.ResultSet.TYPE_SCROLL_INSENSITIVE,java.sql.ResultSet.CONCUR_READ_ONLY);
//执行Sql语句
String sqlQuery="select count(*) from comment";
sqlRst=sqlStmt.executeQuery (sqlQuery);
sqlRst.next();
int count=sqlRst.getInt(1); //取得总的留言记录数
sqlQuery="select * from comment order by userid desc;";
sqlRst=sqlStmt.executeQuery (sqlQuery); //执行SQL语句
%>
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//关闭结果集对象
  sqlRst.close();
  //关闭语句对象
sqlStmt.close ();
//关闭数据库连接
sqlConn.close();
%>
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