我正在使用 Netbeans 8.1 beta 和 Glassfish 服务器 4.1，Mysql。
每次我在我的 Web 应用程序与数据库之间创建连接时，它都无法做到。
索引.jsp 文件：
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql"%>
<%--
Document : index
Created on : Sep 14, 2015, Sep 14, 2015 12:48:03 AM
Author : ESAJ
--%>
<link rel="stylesheet" type="text/css" href="style.css">
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Samir</title>
</head>
<body>
<h1><span style="color:#FF0000;">IFPWAFCAD</span></h1>
<table border="0">
<thead>
<tr>
<th>IFPWAFCAD offers expert counseling in a wide range of fields.</th>
</tr>
</thead>
<tbody>
<tr>
<td>
<form action="response.jsp">
<strong>Select a subject:</strong>
</form>
<select name="subject_id">
<option></option>
<option></option>
</select>
<input type="submit" value="submit" />
</td>
</tr>
<tr>
<td>To view the contact details of an IFPWAFCAD certified former
professional wrestler in your area, select a subject below:</td>
</tr>
</tbody>
</table>
<sql:query var="subject" dataSource="jdbc/IFPWAFCAD">
SELECT subject_id, name FROM Subject
</sql:query>
<table border="1">
<!-- column headers -->
<tr>
<c:forEach var="columnName" items="${subjects.columnNames}">
<th><c:out value="${columnName}"/></th>
</c:forEach>
</tr>
<!-- column data -->
<c:forEach var="row" items="${subjects.rowsByIndex}">
<tr>
<c:forEach var="column" items="${row}">
<td><c:out value="${column}"/></td>
</c:forEach>
</tr>
</c:forEach>
</table>
</body>
</html>
Glassfish 资源.xml 字段：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE resources PUBLIC "-//GlassFish.org//DTD GlassFish Application Server 3.1 Resource Definitions//EN" "http://glassfish.org/dtds/glassfish-resources_1_5.dtd">
<resources>
<jdbc-resource enabled="true" jndi-name="jdbc/IFPWAFCAD" object-type="user" pool-name="IfpwafcadPool">
<description/>
</jdbc-resource>
<jdbc-connection-pool allow-non-component-callers="false" associate-with-thread="false" connection-creation-retry-attempts="0" connection-creation-retry-interval-in-seconds="10" connection-leak-reclaim="false" connection-leak-timeout-in-seconds="0" connection-validation-method="auto-commit" datasource-classname="com.mysql.jdbc.jdbc2.optional.MysqlDataSource" fail-all-connections="false" idle-timeout-in-seconds="300" is-connection-validation-required="false" is-isolation-level-guaranteed="true" lazy-connection-association="false" lazy-connection-enlistment="false" match-connections="false" max-connection-usage-count="0" max-pool-size="32" max-wait-time-in-millis="60000" name="IfpwafcadPool" non-transactional-connections="false" pool-resize-quantity="2" res-type="javax.sql.ConnectionPoolDataSource" statement-timeout-in-seconds="-1" steady-pool-size="8" validate-atmost-once-period-in-seconds="0" wrap-jdbc-objects="false">
<property name="URL" value="jdbc:mysql://localhost:3306/mynewdatabase?zeroDateTimeBehavior=convertToNull"/>
<property name="User" value="root"/>
<property name="Password" value="admin"/>
</jdbc-connection-pool>
</resources>
我已经将 Jar 文件复制到 glassfish 库，还添加了对 web.xml 的引用。
我面临这个错误：
描述服务器遇到一个内部错误，阻止它完成这个请求。
例外
javax.servlet.ServletException：javax.servlet.jsp.JspException：无法获得连接，数据源无效：“java.sql.SQLException：找不到适合 jdbc/IFPWAFCAD 的驱动程序”
根本原因
javax.servlet.jsp.JspException：无法获得连接，数据源无效：“java.sql.SQLException：找不到适合 jdbc/IFPWAFCAD 的驱动程序”