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注:该servlet链接的是mySql数据库,数据库名为test_db 在运行前需要加载mySql数据库驱动DBServlet servlet文件代码如下::package com;import java.io.*; //导入java.io包 import java.util.*; import java.sql.*; import javax.servlet.*; import javax.servlet.http.*; public class DBServlet extends HttpServlet{ ... 阅读全文
posted @ 2013-06-05 17:34
swxj
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http://blog.csdn.net/njchenyi/article/details/6042763 阅读全文
posted @ 2013-06-05 17:13
swxj
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java.lang.ClassNotFoundException: com.mysql.jdbc.Driverat org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1647)at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1493)at java.lang.Class.forName0(Native Method)at java.lang.Class.forName(Clas 阅读全文
posted @ 2013-06-05 16:41
swxj
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import javax.servlet.*;import java.io.*;import javax.servlet.http.*;import java.sql.*;public class CreateDBServlet extends HttpServlet{ private String url; private String user; private String password; public void init() throws ServletException { String driverClass=getInitParameter("driverClass 阅读全文
posted @ 2013-06-05 14:40
swxj
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1.问题:Exception in thread "main" java.lang.NoClassDefFoundError: org/dom4j/DocumentExceptionat HibernateTest.main(HibernateTest.java:14)方法:添加dom4j.jar(解析hibernate.cfg.xml文件)?2.问题:Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactoryat org 阅读全文
posted @ 2013-06-05 13:51
swxj
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http://wenku.baidu.com/view/2b006bd676a20029bd642d80.html 阅读全文
posted @ 2013-06-05 13:49
swxj
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一、java.lang.ClassNotFoundException: javassist.util.proxy.MethodFilterlog4j:WARNNoappenderscouldbefoundforlogger(org.hibernate.type.BasicTypeRegistry).log4j:WARNPleaseinitializethelog4jsystemproperly.Exceptioninthread"main"org.hibernate.HibernateException:Unabletoinstantiatedefaulttuplizer[ 阅读全文
posted @ 2013-06-05 13:45
swxj
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