reurnbookinfo.java

用最近的dojo1.2.1制作前端的ajax购书网站

package server.servlet;
import java.io.*;
import javax.servlet.ServletException;
import server.servlet.OperateCookie.OperateCookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import server.consumer.*;
import java.util.*;
import javax.servlet.http.Cookie;
import server.database.*;
import java.sql.*;
import server.books.MyBookClass;
import changeToJson.ToJson;

/**
 * @version 	1.0
 * @author
 */
public class ReurnBookInfo extends HttpServlet {

	/**
	* @see javax.servlet.http.HttpServlet#void (javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
	*/
	private Vector splitString(String s,char c,boolean trim){
		Vector v = new Vector();
		String x = new String();
		for(int i = 0; i < s.length(); ++i){
			if(s.charAt(i) == c){
				if(trim){
					x = x.trim();
				}
				v.add(x);
				x = new String();
			}
			else{
				x += s.charAt(i);
			}
		}
		if(trim){
			x = x.trim();
		}
		v.add(x);
		return v;
	}
	private HashMap[] book;
	public void doGet(HttpServletRequest req, HttpServletResponse resp)
		throws ServletException, IOException {
			resp.setHeader("Cache-Control","no-cache");
			PrintWriter out=resp.getWriter();
			resp.setContentType("text/html");
			String ids = req.getParameter("ids");
			//System.out.println(ids);
			Vector temp_id = this.splitString(ids,' ',false);
			Object[] id = temp_id.toArray();
			book = new HashMap[id.length];
			try{
				Operation op = new Operation();
				ResultSet rs;
				for(int i = 0; i < id.length; ++i){
					String sql = "select * from Book where id='"+id[i]+"'";
					rs = op.select(sql);
					rs.next();
					HashMap tmp = new HashMap();
					for(int j = 0; j<MyBookClass.getPropertySize(); ++j){
						tmp.put(MyBookClass.property[j],rs.getString(MyBookClass.property[j]));
					}
					book[i] = tmp;
				}
			}
			catch(ClassNotFoundException e){}
			catch(SQLException e){}
			catch(InstantiationException e){}
			catch(IllegalAccessException e){}
			String Json = ToJson.toJson(book);
			System.out.println(Json);
			out.print(Json);
					

	}

	/**
	* @see javax.servlet.http.HttpServlet#void (javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
	*/
	public void doPost(HttpServletRequest req, HttpServletResponse resp)
		throws ServletException, IOException {

	}

	/**
	* @see javax.servlet.GenericServlet#void ()
	*/
	public void init() throws ServletException {

		super.init();

	}

}