weiyong
/
201912G05


			
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							package BA_Control;

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

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

import com.helloBar.barBean;
import com.helloBar.barDAO;

import net.sf.json.JSONArray;


public class helloPie extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public helloPie() {
		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();
		out
				.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
		out.println("<HTML>");
		out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
		out.println("  <BODY>");
		out.print("    This is ");
		out.print(this.getClass());
		out.println(", using the GET method");
		out.println("  </BODY>");
		out.println("</HTML>");
		out.flush();
		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 {

	     //鍒涘缓浜嗕竴涓猙ardao鐨勫璞★紝barDAO涓昏鏄鏁版嵁搴撶殑杩炴帴鍜屽鏁版嵁搴撶殑鎿嶄綔
        barDAO bardao=new barDAO();
        //璋冪敤bardao鐨剆elect_all()鏂规硶鎶婁粠鏁版嵁搴撲腑璇诲彇鎵�鏈夌殑鏁版嵁杩斿洖鐨勬槸涓�涓狝rrayList锛孉rrayList閲岄潰鏀剧殑鏄竴涓猙arBean
        ArrayList<barBean> array = (ArrayList<barBean>) bardao.listAll();
        System.out.println("s"+array);
        //璁剧疆杩斿洖鏃剁殑缂栫爜鏍煎紡
        response.setContentType("text/html; charset=utf-8");
        //璋冪敤JSONArray.fromObject鏂规硶鎶奱rray涓殑瀵硅薄杞寲涓篔SON鏍煎紡鐨勬暟缁�
        JSONArray json=JSONArray.fromObject(array);
        System.out.println(json.toString());
        //杩斿洖缁欏墠娈甸〉闈�
        PrintWriter out = response.getWriter();  
        out.println(json);  
        out.flush();  
        out.close();   
	}

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

}