hibernate为什么初始化失败？？？
我用eclipse建一个web项目来做hibernate练习。
下面这个servlet测试类运行没问题。

Java code

package zgl.test.client;import java.io.IOException;import java.util.Date;//import java.sql.Date;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import zgl.test.bean.Cat;/** * Servlet implementation class HelloWorld */public class HelloWorld extends HttpServlet {    private static final long serialVersionUID = 1L;    /**     * @see HttpServlet#HttpServlet()     */    public HelloWorld() {        super();        // TODO Auto-generated constructor stub    }    /**     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse     *      response)     */    protected void doGet(HttpServletRequest request,            HttpServletResponse response) throws ServletException, IOException {        doPost(request, response);    }    /**     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse     *      response)     */    protected void doPost(HttpServletRequest request,            HttpServletResponse response) throws ServletException, IOException {        response.setContentType("text/html;charset=UTF-8");        java.io.PrintWriter out = response.getWriter();        out.println("--------------你好吗？--------------");                Cat cat=new Cat();        cat.setBirth(new Date());        cat.setCatname("迷人的天空");        zgl.test.util.HibernateUtil.addCat(cat);                if (out != null)            out.close();    }}

但是我写的一个普通类不能运行，高手给说一下吧。

Java code

package zgl.test.client;import java.util.Date;import javax.servlet.ServletException;import zgl.test.bean.Cat;public class Test {    /**     * @param args     * @throws ServletException      */    public static void main(String[] args) throws ServletException {        //为什么会初始化失败呢，为什么获取配置为空指针呢？        Cat cat=new Cat();        cat.setBirth(new Date());        cat.setCatname("迷人的天空");        zgl.test.util.HibernateUtil.addCat(cat);    }}

异常如下：
Exception in thread "main" java.lang.ExceptionInInitializerError
at org.hibernate.cfg.Configuration.reset(Configuration.java:201)
at org.hibernate.cfg.Configuration.<init>(Configuration.java:220)
at org.hibernate.cfg.Configuration.<init>(Configuration.java:224)
at zgl.test.util.HibernateUtil.<clinit>(HibernateUtil.java:15)
at zgl.test.client.Test.main(Test.java:19)
Caused by: java.lang.NullPointerException
at org.hibernate.util.ConfigHelper.getResourceAsStream(ConfigHelper.java:167)
at org.hibernate.cfg.Environment.<clinit>(Environment.java:558)
... 5 more

[解决办法]

引用楼主 fengzhiquxiang1 的帖子:

我用eclipse建一个web项目来做hibernate练习。
下面这个servlet测试类运行没问题。

Java codepackage zgl.test.client;

import java.io.IOException;
import java.util.Date;
//import java.sql.Date;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import zgl.test.bean…

[解决办法]
是不是初始化文件中有在TOMCAT启动时自动加载的 ？？或者必须通过web程序才能正常初始化？

例如proxool中配置数据库，就必须通过web程序运行。
[解决办法]
是不是hinernate中的配置文件有问题啊!没找到映射文件