QueryRunner.update抛出错误，麻烦大侠帮忙分析一下呀-Java教程-爱易网页

QueryRunner.update抛出错误，麻烦大侠帮忙分析一下呀

日期：2014-05-17　浏览次数：20751 次

QueryRunner.update抛出异常，麻烦大侠帮忙分析一下呀~
我在程序中使用了DBUtil组件

Java code

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;

import org.apache.commons.dbutils.*;


public class AddMessage extends HttpServlet {

    private static final long serialVersionUID = 1L;

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        doPost(request,response);
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        
        String sql = "insert into guestbook (id,name,email,phone,title,content,time) values (gb_seq.nextval,?,?,?,?,?,?)";
        int result = 0;
        response.setContentType("text/html;charset=utf-8");
        PrintWriter out = response.getWriter();
        out
                .println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
        out.println("<HTML>");
        out.println("  <HEAD><TITLE>Add Message</TITLE></HEAD>");
        out.println("  <BODY>");
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss aaa");
        String name = request.getParameter("name");
        String title = request.getParameter("title");
        if(StringUtil.validateNull(name)){
                out.println("名字不能为空！请重新输入！");
                out.println("<a href=\""+request.getContextPath()+"/AddMessage.htm>添加留言</a>");
            }
        if(StringUtil.validateNull(title)){
                out.println("主题不能为空！请重新输入！");
                out.println("<a href=\""+request.getContextPath()+"/AddMessage.htm>添加留言</a>");
            }
        String[] params = {StringUtil.filterHtml(name),
                    StringUtil.filterHtml(request.getParameter("email")),
                    StringUtil.filterHtml(request.getParameter("phone")),
                    StringUtil.filterHtml(title),
                    request.getParameter("content"),
                    sdf.format(new Date())};
        try {
            Context initCon = new InitialContext();
            DataSource ds = (DataSource) initCon.lookup("java:comp/env/jdbc/oracledb");
            QueryRunner qr = new QueryRunner(ds);
            //-------------------第86行---------------------------------
                        result = qr.update(sql, params);
            //------------------------
        } catch (NamingException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            // TO

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QueryRunner.update抛出错误，麻烦大侠帮忙分析一下呀

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