"HouseKeeper" java.lang.NullPointerException

引用

今天应用启动后,页面点击几下就报出 Exception in thread "HouseKeeper" java.lang.NullPointerException;    多点几次会重复出现这bug, 然后在网上找到一个比较妙的解决办法:

package com.spro.core.config;

import java.io.IOException;

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

import org.logicalcobwebs.proxool.ProxoolFacade;

public class HouseKeeperServlet extends HttpServlet {
  
	private static final long serialVersionUID = 1L;

	@Override
	public void destroy() {
//此处添加处理
		ProxoolFacade.shutdown();
	}

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

	}

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

}

web.xml配置

<!-- 处理HouseKeeper NULL异常 -->
  <servlet>  
	  <servlet-name>HouseKeeperServlet</servlet-name>  
	  <servlet-class>com.xxx.core.config.HouseKeeperServlet</servlet-class>  
	  <load-on-startup>1</load-on-startup>  
  </servlet>