validdateservlet.java

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package servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.ResultSet;
import java.sql.SQLException;

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

import dataaccess.dbtool.GetDataSourceFromDB;

public class validDateServlet extends HttpServlet {
	
	private static final long serialVersionUID = 0x345734D534534L;

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

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

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		String no = request.getParameter("no");
		String name = request.getParameter("name");
		
		//request.setCharacterEncoding("gb2312");
		//response.setCharacterEncoding("gb2312");
		boolean isPass = validData(no,name);
		response.setHeader("CacheControl","no-cache");
		response.setContentType("text/xml");
		String message = "";
		if(isPass)
			message = "Validtion Passed , have an Valid !";
		else
			message = "sorry Valid faile , have an InValid! ";
		message = new String(message.getBytes("iso-8859-1"),"GBK");
		PrintWriter out = response.getWriter();
		out.println("<response>");
		out.println("<pass>" + Boolean.toString(isPass) + "</pass>");//\
		out.println("<message>" + message + "</message>");
		out.println("</response>");
		out.flush();
		out.close();
	}
	
	protected boolean validData(String no,String name)
	{
		String sql = "select empno,empname from EMP e where empno=" + no.trim() + 
							" and empname='" + name.trim() + "'";
		System.out.println("sql:=" + sql);
		ResultSet rs = 
			new GetDataSourceFromDB().getResultSets(sql);
	try {
		while(rs.next())
		{
			return true;
			//System.out.println("员工号:" + rs.getInt(1) + ",员工姓名：" + rs.getString(2));
		}
	} catch (SQLException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
		throw new RuntimeException("at:class:" +this.getClass().getName() + "发生异常！");
		
	}
		return false;
	}
	/**
	 * 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 {

		doGet(request,response);
	}

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

}