我是JSP的新手。所以我想创建一个登录网站，但我遇到了sql异常。没有人知道如何解决这个问题？我使用的所有程序都是32位的，并且我已经将MsAccess数据库添加到我的用户数据源中。
这是错误信息：
5: <%
6: Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
7: Connection con = DriverManager.getConnection("jdbc:odbc:Driver={Microsoft Access Driver (*.mdb, *.accdb)};DBQ="+application.getRealPath("WEB-INF/db.accdb"));
8: Statement st = con.createStatement(1004,1008);
9:
10: %>
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:568)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:455)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
root cause
javax.servlet.ServletException: java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver] Could not find file '(unknown)'.
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:916)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:845)
org.apache.jsp.khema.doLogin_jsp._jspService(doLogin_jsp.java:145)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
root cause
java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver] Could not find file '(unknown)'.
sun.jdbc.odbc.JdbcOdbc.createSQLException(JdbcOdbc.java:6957)
sun.jdbc.odbc.JdbcOdbc.standardError(JdbcOdbc.java:7114)
sun.jdbc.odbc.JdbcOdbc.SQLDriverConnect(JdbcOdbc.java:3073)
sun.jdbc.odbc.JdbcOdbcConnection.initialize(JdbcOdbcConnection.java:323)
sun.jdbc.odbc.JdbcOdbcDriver.connect(JdbcOdbcDriver.java:174)
java.sql.DriverManager.getConnection(DriverManager.java:582)
java.sql.DriverManager.getConnection(DriverManager.java:207)
org.apache.jsp.khema.doLogin_jsp._jspService(doLogin_jsp.java:72)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
首先，请确保指定了DB文件的正确路径，然后执行以下步骤。在"控制"面板中搜索"管理工具"，然后在"添加Microsoft Access Drivers(*mdb,*accdb)"之后搜索"数据源（ODBC）"。