Question

jsp 连接数据库老是出错

org.apache.jasper.JasperException: An exception occurred processing JSP page /employeeinformation.jsp at line 25

22:
23: //Connection conn = (new DBConnect()).getODBCConn("EIMS");
24: Connection conn = (DBConnectionManager.getInstance()).getConnection("eims");
25: Statement stmt = conn.createStatement();
26: ResultSet RSEnquiryResult = null;
27:
28: if (request.getParameter("Send") != null) {

Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:524)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:435)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
cn.tech.filter.setEncodingFilter.doFilter(setEncodingFilter.java:23)

root cause

java.lang.NullPointerException
org.apache.jsp.employeeinformation_jsp._jspService(employeeinformation_jsp.java:80)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
cn.tech.filter.setEncodingFilter.doFilter(setEncodingFilter.java:23)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.13 logs.

Answer 1

try{}catch(){}试一下。