Java调用淘宝API demo源代码

/**  
 *   
 */  
package com.taobao.api.demo.onsale;   
import java.io.IOException;   
import java.net.URLEncoder;   
import javax.servlet.ServletException;   
import javax.servlet.http.HttpServlet;   
import javax.servlet.http.HttpServletRequest;   
import javax.servlet.http.HttpServletResponse;   
import org.apache.commons.logging.Log;   
import org.apache.commons.logging.LogFactory;   
import com.taobao.api.TaobaoApiException;   
import com.taobao.api.TaobaoJsonRestClient;   
import com.taobao.api.TaobaoRestClient;   
import com.taobao.api.model.ItemsGetResponse;   
import com.taobao.api.model.ItemsOnSaleGetRequest;   
/**  
 * @version 2008-10-29  
 * @author <a href="mailto:zixue@taobao.com">zixue</a>  
 *   
 */  
public class MainServlet extends HttpServlet {   
    private static final transient Log log = LogFactory   
            .getLog(MainServlet.class);   
    /**  
     *   
     */  
    private static final long serialVersionUID = 8839099738909766274L;   
    @Override  
    protected void doPost(HttpServletRequest req, HttpServletResponse resp)   
            throws ServletException, IOException {   
        String appkey = req.getParameter("appkey");   
        String secret = req.getParameter("secret");   
        if (log.isDebugEnabled()) {   
            log.debug(appkey + ":" + secret);   
        }   
        if (appkey != null && secret != null) {   
            try {   
            //生成客户端实例   
                TaobaoRestClient client = new TaobaoJsonRestClient(appkey,secret);   
                //淘宝卖家的出售的商品列表   
                ItemsOnSaleGetRequest tbReq = new ItemsOnSaleGetRequest()   
                        .withFields("iid,title,price,list_time,num")   
                        .withPageNo(1)   
                        .withPageSize(20);   
                // use appkey as session_id   
                ItemsGetResponse tbRsp = client.itemsOnSaleGet(tbReq, appkey);//搜索单个商品信息的Request请求   
                if (log.isDebugEnabled()) {   
                    log.debug(tbRsp.getBody());   
                }   
                //如果接口调用成功   
                if (!tbRsp.isSuccess()) {   
                    if (tbRsp.isRedirect()) {   
                        req.setAttribute("url",   
                                         tbRsp.getRedirectUrl(URLEncoder   
                                                              .encode   
                                                              (req.getRequestURL()   
                                                                  .append('?')   
                                                                  .append("appkey=")   
                                                                  .append(appkey)   
                                                                  .append("&secret=")   
                                                                  .append(secret)   
                                                                  .toString(),"utf-8")   
                                                             )   
                                        );   
                    } else {   
                        req.setAttribute("msg", tbRsp.getMsg());   
                    }   
                } else {   
                    req.setAttribute("items", tbRsp.getItems());   
                }   
            } catch (TaobaoApiException e) {   
                throw new ServletException(e);   
            }   
        }   
        req.getRequestDispatcher("main.jsp").forward(req, resp);   
    }   
    @Override  
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)   
            throws ServletException, IOException {   
        doPost(req, resp);   
    }   
}