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：
1 public String GetData(String URL)
2 {
3 String returns="";
4
5 //Step One register scheme of https
6 HostnameVerifier hostnameVerifier = org.apache.http.conn.ssl.SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER;
7
8 SchemeRegistry registry = new SchemeRegistry();
9 SSLSocketFactory socketFactory = SSLSocketFactory.getSocketFactory();
10 socketFactory.setHostnameVerifier((X509HostnameVerifier) hostnameVerifier);
11 registry.register(new Scheme("https", socketFactory, 443));
12 registry.register(new Scheme("http",PlainSocketFactory.getSocketFactory (), 80));
13
14 //Step Two Get httpClient and httpPost
15
16 DefaultHttpClient client = new DefaultHttpClient();
17 SingleClientConnManager mgr = new SingleClientConnManager(client.getParams(), registry);
18 DefaultHttpClient httpClient = new DefaultHttpClient(mgr, client.getParams());
19 //------- Set verifier
20 HttpsURLConnection.setDefaultHostnameVerifier(hostnameVerifier);
21 // -------Example send http request
22 // final String url = "https://martinreichart.com/_tmpdata/login_valid.json";
23 HttpPost httpPost = new HttpPost(URL);
24
25 //Step Three Get Data
26 try {
27 HttpResponse response = httpClient.execute(httpPost);
28 if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
29 // 解析返回的内容
30 returns = EntityUtils.toString(response.getEntity());
31 }
32 }
33 catch(Exception ex)
34 {
35
36 String aa =ex.toString();
37 }
38
39 return returns;
40 }