showcatalog.java

用java+Ajax做的图书商城

package shoppcart;

import java.io.IOException;
import java.io.PrintWriter;

import java.util.ArrayList;
import java.util.Iterator;

import java.util.List;

import javax.servlet.*;
import javax.servlet.http.*;

public class ShowCatalog extends HttpServlet {
    private static final String CONTENT_TYPE = "text/html; charset=UTF-8";

    public void init(ServletConfig config) throws ServletException {
        super.init(config);
    }

    public void doGet(HttpServletRequest request, 
                      HttpServletResponse response) throws ServletException, IOException {response.setContentType(CONTENT_TYPE);
        PrintWriter out = response.getWriter();
        List<BookCatalog> list=BookCatalog.getCatalogList();
        StringBuffer content=new StringBuffer(""); 
        response.setContentType("text/xml"); 
        response.setHeader("Cache-Control","no-cache");
        content.append("<?xml version=\"1.0\"   encoding=\"UTF-8\" ?>");
        content.append("<list>");
        Iterator iterator=list.iterator();
        while(iterator.hasNext()){
            BookCatalog catalog=(BookCatalog)iterator.next();
            content.append("<catalog>");
            content.append("<id>" + catalog.getType() + "</id>");
            content.append("<name>" + catalog.getName()+ "</name>");
            content.append("");
            content.append("</catalog>");
        }
        content.append("</list>");
        out.print(content);
        out.close();
    }
}