Jsp连接Mysql数据库：利用Servlet监听器

<p>/** */ /** <br>* @(#)ResourceManagerListener.java<br>*<br>* 资源初始化监听器<br>*<br>package  kinglong.jmediasoft.servlets;</p><p>import  javax.servlet. * ;<br>import  javax.servlet.http. * ;<br>import  com.mysql.jdbc.jdbc2.optional. * ;</p><p>public   class  ResourceManagerListener  implements  ServletContextListener  { <br>private  DataSource ds = null ; <br>public   void  contextInitialized(ServletContextEvent sce)  {<br>ServletContext application = sce.getServletContext();<br>String jdbcurl = application.getInitParameter( " jdbcURL " );<br>String user = application.getInitParameter( " user " );<br>String password = application.getInitParameter( " password " );<br>try  {<br>ds = new  MysqlConnectionPoolDataSource();<br>ds.setUrl(jdbcurl);<br>ds.setUser(user);<br>ds.setPassword(password);<br>} catch (Exception e)  {<br>application.log( " 无法创建数据源： " + e.getMessage()); <br>return ;  <br>}   <br>application.setAttribute( " dataSource " ,ds);//将数据源变量置于应用作用域中<br>} <br><br>public   void  contextDestroyed(ServletContextEvent sce)  {<br>ServletContext application = sce.getServletContext();<br>application.removeAttribute( " dataSource " );<br>ds = null ;<br>} <br>} </p>

<p> <br> jdbcURL  param-name> <br> jdbc:mysql://localhost:3306/comic  param-value>  context-param> <br> <br> user  param-name> <br> root  param-value> <br> <br> password  param-name> <br> root  param-value> <br> <br> </p><p>kinglong.jmediasoft.servlets.ResourceManagerListener</p>

<p></p><p>sql ="SELECT * FROM comicinfo"   />  </p><p> <br> <br> <br> 数据库测试页面  title=""> </p><p> </p><p> <br> <br> <br> <br> $ { fn:escapeXml(column.key)}:  b> td> <br> $ { fn:escapeXml(column.value)} </p>