重装了系统，原来能用得JB+ORACLE系统不行了

Question

原来做的一个系统，使用java 通过thin模式连接了oracle数据库；
现在重装系统后，不行了。装好jb2006 和 oracle10g后
设置了classpath变量如下：
E:\oracle\product\10.2.0\db_1\jdbc\lib\classes12.jar;E:\oracle\product\10.2.0\db_1\jdbc\lib\nls_charset12.jar;在sql plus里使用scott,tiger访问orcl数据库，成功！
几个关键文件得代码：
package dbconn;
import java.sql.*;public class DbConn {
    private static Connection conn = null;    public static Connection getConn() {
        try {
            Class.forName("oracle.jdbc.driver.OracleDriver");
            conn = DriverManager.getConnection(
                    "jdbc:oracle:thin:@localhost:1521:orcl", "scott", "tiger");        } catch (ClassNotFoundException ex) {
            System.out.print("没有找到类");
        } catch (SQLException ex) {
            System.out.print("数据库连接异常");
        }        return conn;
    }
}FenyeBean.java（见回复一）
错误提示，间回复二

Answer 1

太长，全部粘不下package bean.base;import java.sql.*;
import dbconn.DbConn;
public class FenyeBean {
    Connection conn = null;
    Statement stmt = null;
    ResultSet CountTopicrs = null; //初始化总记录数Rs变量
    ResultSet Pagirs = null; //初始化分页时每页的记录集数Rs变量    private int intCountTopic = 0; //主题总数,即select选出的、库中所有记录总数
    public int intPageSize; //每页显示主题数,即每页显示的记录总数
    public int intPageCount; //总页数
    public int intPage = 0; //当前页数
    private String Countsql = null, Pagisql = null, str = null, str_where = null;
    private String str_parameter = "";
//public static int pages_n=1; //传分页参数值    private String nowPage; //初始化当前页intPage变量，以准确便获取当前页，即获取当前页的具体页号。
    private String HttpFile; //当前的地址栏的文件，即具体jsp文件。//连接数据库，构造方法自动进行
    public FenyeBean() {
        try {
            this.conn = DbConn.getConn();
            this.stmt = conn.createStatement();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
   。。
   
} //end.

Answer 2

2008-9-12 13:39:29 org.apache.catalina.core.StandardContext filterStart
严重: Exception starting filter BalancerFilter
java.lang.NoClassDefFoundError: org/apache/tomcat/util/digester/Digester
at org.apache.webapp.balancer.RulesParser.createDigester(RulesParser.java:65)
at org.apache.webapp.balancer.RulesParser.<init>(RulesParser.java:43)
at org.apache.webapp.balancer.BalancerFilter.init(BalancerFilter.java:79)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:225)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:308)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:79)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3540)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4110)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:759)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:524)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:894)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:857)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:475)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1102)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1020)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1012)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
at org.apache.catalina.core.StandardService.start(StandardService.java:450)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:683)
at org.apache.catalina.startup.Catalina.start(Catalina.java:537)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:271)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:409)

Answer 3

2008-9-12 13:39:29 org.apache.catalina.core.StandardContext start
严重: Error filterStart
2008-9-12 13:39:29 org.apache.catalina.core.StandardContext start
严重: Context [/balancer] startup failed due to previous errors
2008-9-12 13:39:29 org.apache.coyote.http11.Http11Protocol start
信息: Starting Coyote HTTP/1.1 on http-8080
2008-9-12 13:39:29 org.apache.catalina.startup.Catalina start
信息: Server startup in 1593 ms
数据库连接异常java.lang.NullPointerException
at bean.base.FenyeBean.<init>(FenyeBean.java:28)
at org.apache.jsp.base.postsearch_jsp._jspService(org.apache.jsp.base.postsearch_jsp:52)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
java.lang.NullPointerException
at bean.base.FenyeBean.querySql(FenyeBean.java:139)
at bean.base.FenyeBean.setQuerysql(FenyeBean.java:59)
at org.apache.jsp.base.postsearch_jsp._jspService(org.apache.jsp.base.postsearch_jsp:106)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
java.lang.NullPointerException
at bean.base.FenyeBean.closeConn(FenyeBean.java:278)
at org.apache.jsp.base.postsearch_jsp._jspService(org.apache.jsp.base.postsearch_jsp:130)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)