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HTTP Status 500 -type Exception reportmessagedescription The server encountered an internal error () that prevented it from fulfilling this request.exceptionorg.apache.jasper.JasperException: An exception occurred processing JSP page /gaokao/desktop.jsp at line 17 14: 15: Class.forName(driver).newInstance(); 16: String sql = "select * from tb_user where cardno = ? and password = ?"; 17: conn = DriverManager.getConnection(url, user, password); 18: stmt = conn.prepareStatement(sql); 19: 20: stmt.setString(1, username); Stacktrace: org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:498) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) root causejavax.servlet.ServletException: java.sql.SQLException: Listener refused the connection with the following error: ORA-12518, TNS:listener could not hand off client connection org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:852) org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781) org.apache.jsp.gaokao.desktop_jsp._jspService(desktop_jsp.java:259) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) root causejava.sql.SQLException: Listener refused the connection with the following error: ORA-12518, TNS:listener could not hand off client connection oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:113) oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:263) oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:389) oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:454) oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165) oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35) oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:802) java.sql.DriverManager.getConnection(DriverManager.java:582) java.sql.DriverManager.getConnection(DriverManager.java:185) org.apache.jsp.gaokao.desktop_jsp._jspService(desktop_jsp.java:71) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) note The full stack trace of the root cause is available in the JBoss Web/2.1.4.GA logs.JBoss Web/2.1.4.GA
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