isexistempname.java

一个简单的人员管理。运用了ajax和struts、hibernate框架开发。

package com.liu.ems.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

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

import com.liu.ems.hibernate.EmployeesDAO;

public class isExistEmpName extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public isExistEmpName() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
//		request.setCharacterEncoding("GBK");
//		response.setCharacterEncoding("GBK");
		//1.取得参数
		String str=request.getParameter("empname");
		String empname=new String(str.getBytes("GBK"));
		
		System.out.print("要检查的职员姓名："+empname);
		//2.检查职员姓名是否存在
		boolean falg=false;
		List list=new EmployeesDAO().findByEmpName(empname);
		if(list==null || list.size()<=0){
			falg=true;
		}else{
			falg=false;
		}
		System.out.print(falg);
		System.out.print(list.size());
		
		//3.发送响应值
		out.print(falg);
		out.close();
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
     //调用doget方法
		doGet(request,response); 
	
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}