HttpClient通過GET和POST獲取網頁內容

最簡單的HTTP客戶端,用來演示通過GET或者POST方式訪問某個頁面

 
/**


中國銀行支付網關---銀行回調的接口
@svncode <a href="svn://10.210.71.10/sinapay_bank/src/java/cn/com/sina">svn://10.210.71.10/sinapay_bank/src/java/cn/com/sina
@package cn.com.sina.pay.Bank.BOC
@author yuchao1@staff.sina.com.cn
@date 20101014
@access limited by password
@reference cn.com.sina.pay.ICBC
/
import java.io.;
import java.util.*;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.Namespace;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.xml.sax.InputSource;

import org.apache.commons.httpclient.;
import org.apache.commons.httpclient.methods.;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.params.HttpMethodParams;
/**

最簡單的HTTP客戶端,用來演示通過GET或者POST方式訪問某個頁面
@author yuchao
*/
public class HttpClient1{
 public static void main(String[] args) throws IOException
 {

 String merchantNo = "104110053004253";
 String orderNo = "101023416806";
 String signData = "SDJFALSF";

 HttpClient client = new HttpClient();

     //使用POST方法
     PostMethod postMethod = new PostMethod("<a href="https://ebspay.boc.cn/PGWPortal/QueryOrder.do">https://ebspay.boc.cn/PGWPortal/QueryOrder.do");
     /**
      * 使用POST方式提交數據
      */
   NameValuePair[] orderInfo = {new NameValuePair("merchantNo",merchantNo),new NameValuePair("orderNos",orderNo),
           new NameValuePair("signData",signData),};
   postMethod.setRequestBody(orderInfo);

   client.executeMethod(postMethod);

   int code = postMethod.getStatusCode();  
   if (code == HttpStatus.SC_OK){
     String info = null;
     info = new String(postMethod.getResponseBodyAsString());
   }

   /**
    * 打印服務器返回的狀態
    */
   System.out.println("the post return value"+postMethod.getStatusLine());
   /**
    * 打印結果頁面
    */
   String response =   new String(postMethod.getResponseBodyAsString().getBytes("UTF-8"));
    /**
     * 打印返回的信息
     */
   System.out.println("the getBytes() xml is:"+response);
    //打印返回的信息
  String resCode = postMethod.getResponseBodyAsString();
  System.out.println("the is my other xml:"+resCode);
    //釋放連接
  postMethod.releaseConnection();



 StringReader read = new StringReader(resCode);
 InputSource source = new InputSource(read);
 SAXBuilder sb = new SAXBuilder();

 try{
    Document doc = sb.build(source);
    Element root = doc.getRootElement();

    System.out.println("the getName is:"+root.getName());
    List jiedian = root.getChildren();
    //獲得XML中的命名空間（XML中未定義可不寫）
    Namespace ns = root.getNamespace();
    Element et = null;
    List orderList = null;

    for (int i=0;i<jiedian.size();i++)
    {
        et = (Element)jiedian.get(i);

        if(et.getName().equals("header")){
            System.out.println(et.getChild("merchantNo", ns).getText());
            System.out.println(et.getChild("exception", ns).getText());
        }

        if(et.getName().equals("body")){
            orderList = et.getChildren();
        System.out.println(et.getChild("orderTrans", ns).getChild("orderStatus").getText());
        }

    }
    for (int i=0;i<orderList.size();i++)
    {
        et = (Element)orderList.get(i);

        if(et.getName().equals("orderTrans")){
            System.out.println(et.getChild("payTime", ns).getText());               
        }

    }
    }catch(JDOMException e){
        e.printStackTrace();
  }catch(IOException e){
        e.printStackTrace();
    }

}
}
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