(android 互联网开发)2 访问https接口，进行数据交互（已在实际项目中使用）

前言：

      在android开发中，会涉及到安全比较高的业务，比如银行，网上交易等，这就涉及到https协议的交互

    对于https 交互过程分两个阶段

    1. 客户端获取服务器的证书，并验证证书的内容是否可信

     2. 客户端和服务器端进行握手协议，并进行数据传输

   

    对于https 交互过程，第一点，采用了网站可信的方式，如有需要验证域名和证书是否一致的，请自我扩展

   实现的过程：

   1）： 注册scheme of https

    注意：

HostnameVerifier hostnameVerifier = org.apache.http.conn.ssl.SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER; 
如果需要验证，则，自己继承HostnameVerifier ，并实现接口。

    2）：获取 httpClient 和 httpPost

    3）：获取数据

 

下面是实现的源码，参数就是https路径：

  public String GetData(String URL)
      {
          String returns="";
        
          //Step One  register scheme of https 
          HostnameVerifier hostnameVerifier = org.apache.http.conn.ssl.SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER;         
         
          SchemeRegistry registry = new SchemeRegistry();   
          SSLSocketFactory socketFactory = SSLSocketFactory.getSocketFactory();   
          socketFactory.setHostnameVerifier((X509HostnameVerifier) hostnameVerifier);   
          registry.register(new Scheme("https", socketFactory, 443)); 
          registry.register(new Scheme("http",PlainSocketFactory.getSocketFactory (), 80)); 
          
          //Step Two  Get httpClient and httpPost
          
          DefaultHttpClient client = new DefaultHttpClient();  
          SingleClientConnManager mgr = new SingleClientConnManager(client.getParams(), registry);       
          DefaultHttpClient httpClient = new DefaultHttpClient(mgr, client.getParams());      
          //------- Set verifier    
          HttpsURLConnection.setDefaultHostnameVerifier(hostnameVerifier);     
          // -------Example send http request      
// final String url = "https://martinreichart.com/_tmpdata/login_valid.json";      
          HttpPost httpPost = new HttpPost(URL);     
        
          //Step Three Get Data
          try {
              HttpResponse response = httpClient.execute(httpPost); 
              if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {  
               // 解析返回的内容   
                returns = EntityUtils.toString(response.getEntity());         
             } 
          }
          catch(Exception ex)
          {
              
              String aa =ex.toString();
          }
          
          return returns;
      }