连接池的问题，无法显示网页

连接池的配置proxool.xml<?xml version="1.0" encoding="UTF-8"?>
<something-else-entirely>
<proxool>
<alias>mysql</alias>
<driver-url>jdbc:mysql://localhost:3306.mvctest?useUnicode=true&amp;characterEncoding=gb2312</driver-url>
<driver-class>com.mysql.jdbc.Driver</driver-class>
<driver-properties>
<property name="user" value="root"></property>
<property name="password" value="root"></property>
</driver-properties>
<maximum-connection-count>5000</maximum-connection-count>
<minimum-connection-count>5</minimum-connection-count>
<maximum-active-time>6000</maximum-active-time>
</proxool>
</something-else-entirely>web.xml的配置<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
 <servlet>
  <servlet-name>mvcServlet</servlet-name>
  <servlet-class>
  org.logicalcobwebs.proxool.configuration.mvcServlet
  </servlet-class>
  <init-param>
   <param-name>xmlFile</param-name>
   <param-value>WEB-INF/proxool.xml</param-value>
  </init-param>
  <load-on-startup>1</load-on-startup>
 </servlet>
 <servlet>
  <servlet-name>Admin</servlet-name>
  <servlet-class>
  org.logicalcobwebs.proxool.admin.servlet.AdminServlet
  </servlet-class>
 </servlet>
 <servlet-mapping>
  <servlet-name>Admin</servlet-name>
  <url-pattern>/admin</url-pattern>
 </servlet-mapping>
 <welcome-file-list>
  <welcome-file>index.jsp</welcome-file>
 </welcome-file-list>
 <login-config>
  <auth-method>BASIC</auth-method>
 </login-config>
</web-app>jsp页面<%@ page language="java" import="java.util.*" import="java.sql.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
   
  </head>
  
  <body>
    <%!int i=0;%>
    <%try{
     Class.forName("org.logicalcobwebs.proxool.ProxoolDriver");
     Connection conn=DriverManager.getConnection("proxool.mysql");
     i++;
     out.print("您以获取"+i+"个数据库连接");
    }catch(Exception e){
     e.printStackTrace();
    } 
    %>
  </body>
</html>当在浏览器输入url“http://localhost:8080/mvctest/index.jsp”后页面报错
HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:491)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:401)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
root cause javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:862)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:791)
org.apache.jsp.index_jsp._jspService(index_jsp.java:86)
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:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
root cause java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
org.logicalcobwebs.proxool.ProxoolDriver.<clinit>(ProxoolDriver.java:28)
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Class.java:186)
org.apache.jsp.index_jsp._jspService(index_jsp.java:70)
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:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
root cause java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1484)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1329)
org.logicalcobwebs.proxool.ProxoolDriver.<clinit>(ProxoolDriver.java:28)
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Class.java:186)
org.apache.jsp.index_jsp._jspService(index_jsp.java:70)
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:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.24 logs.
--------------------------------------------------------------------------------Apache Tomcat/6.0.24

解决方案 »

  1.   

    一种可能是classpath未指向jdbc驱动程序所在的位置
    另一种可能是Class.forName(driver)中的driver的拼写有误
      

  2.   

     java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactorycommon-logging没有
      

  3.   

    现在出现这样的问题
    HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: An exception occurred processing JSP page /index.jsp at line 1310:   <body>
    11:      <%!int i=0;%>
    12:     <%try{
    13:         Class.forName("org.logicalcobwebs.proxool.ProxoolDriver");
    14:         Connection conn=DriverManager.getConnection("proxool.mysql");
    15:         i++;
    16:         out.print("鎮ㄤ互鑾峰彇"+i+"涓暟鎹簱杩炴帴");
    Stacktrace:
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:401)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    root cause javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:862)
    org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:791)
    org.apache.jsp.index_jsp._jspService(index_jsp.java:87)
    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:377)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    root cause java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
    org.logicalcobwebs.proxool.ProxoolDriver.<clinit>(ProxoolDriver.java:28)
    java.lang.Class.forName0(Native Method)
    java.lang.Class.forName(Class.java:186)
    org.apache.jsp.index_jsp._jspService(index_jsp.java:70)
    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:377)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    root cause java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1484)
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1329)
    org.logicalcobwebs.proxool.ProxoolDriver.<clinit>(ProxoolDriver.java:28)
    java.lang.Class.forName0(Native Method)
    java.lang.Class.forName(Class.java:186)
    org.apache.jsp.index_jsp._jspService(index_jsp.java:70)
    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:377)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    note The full stack trace of the root cause is available in the Apache Tomcat/6.0.24 logs.请问这里的13行问题如何解决，这个找不到的应该是proxooljar包里的吧
      

  4.   

    javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory找个log4j的jar
      

  5.   

    org.apache.commons.logging.LogFactory......
    缺少apache的log4j.jar,commons-logging.jar包
      

  6.   

    学习了，现在jar包多了，冲突问题到处都是，还无法分析异常，真累人啊
      

  7.   

    请问log4的jar包放大哪个目录下，是WEB-INF的lib下吗
      

  8.   

    我放到lib下后又出现这样的问题，啊啊啊纠结啊，为什么不能初始化呢
    HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: javax.servlet.ServletException: java.lang.NoClassDefFoundError: Could not initialize class org.logicalcobwebs.proxool.ProxoolDriver
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:491)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:401)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    root cause javax.servlet.ServletException: java.lang.NoClassDefFoundError: Could not initialize class org.logicalcobwebs.proxool.ProxoolDriver
    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:862)
    org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:791)
    org.apache.jsp.index_jsp._jspService(index_jsp.java:87)
    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:377)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    root cause java.lang.NoClassDefFoundError: Could not initialize class org.logicalcobwebs.proxool.ProxoolDriver
    java.lang.Class.forName0(Native Method)
    java.lang.Class.forName(Class.java:186)
    org.apache.jsp.index_jsp._jspService(index_jsp.java:70)
    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:377)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    note The full stack trace of the root cause is available in the Apache Tomcat/6.0.24 logs.
    --------------------------------------------------------------------------------