我这个<sql:setDataSource> 的标签哪里出错了啊？

大家看一下我这个jsp文件，我现在只是初始化一个数据源，但是出错了<%@ taglib prefix="sql" uri="http://java.sun.com/jstl/sql" %>
<%@ page contentType="text/html; charset=gb2312" language="java" %>
<html>
<head>
  <title>JSTL:的使用</title>
</head>
<body bgcolor="#FFFFFF">
创建普通的数据源：<br>
<sql:setDataSource
  var="example1"
  driver="com.mysql.jdbc.Driver"
  url="jdbc:mysql://127.0.0.1:6000/shujuku"
  user="root"
  password="a"
/>数据库名称，密码，端口，驱动名都对的啊就是不知道哪里错了？错误信息如下exceptionjavax.servlet.ServletException: Unable to get connection, DataSource invalid: "Access denied for user ''@'localhost' (using password: NO)"
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
org.apache.jsp.sql_005fdatasource_jsp._jspService(sql_005fdatasource_jsp.java:144)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause javax.servlet.jsp.JspException: Unable to get connection, DataSource invalid: "Access denied for user ''@'localhost' (using password: NO)"
org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.getConnection(QueryTagSupport.java:309)
org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.doStartTag(QueryTagSupport.java:192)
org.apache.taglibs.standard.tag.el.sql.QueryTag.doStartTag(QueryTag.java:125)
org.apache.jsp.sql_005fdatasource_jsp._jspx_meth_sql_query_1(sql_005fdatasource_jsp.java:339)
org.apache.jsp.sql_005fdatasource_jsp._jspService(sql_005fdatasource_jsp.java:111)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)