Android网络编程——https 不验证证书方式(信任所有证书)

         前面写了http的联网方式,Android平台上经常有使用https的需求,对于https服务器使用的根证书是受信任的证书的话,实现https是非常简单的,直接用httpclient库就行了,与使用http几乎没有区别。但是在大多数情况下,服务器所使用的根证书是自签名的,或者签名机构不在设备的信任证书列表中,这样使用httpclient进行https连接就会失败。解决这个问题的办法有两种,一是在发起https连接之前将服务器证书加到httpclient的信任证书列表中,这个相对来说比较复杂一些,很容易出错;另一种办法是让httpclient信任所有的服务器证书,这种办法相对来说简单很多,但安全性则差一些,但在某些场合下有一定的应用场景。这一篇主要实现httpclient信任所有的服务器证书。

      直接给出代码:

     

public class HttpsTestActivity extends Activity {
    /** Called when the activity is first created. */
	private TextView text;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        text=(TextView)findViewById(R.id.textView1);
        GetHttps();
    }
    
    private void GetHttps(){
    	String https = "https://www.google.com.hk";
        try{
        	SSLContext sc = SSLContext.getInstance("TLS");
            sc.init(null, new TrustManager[]{new MyTrustManager()}, new SecureRandom());
            HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
            HttpsURLConnection.setDefaultHostnameVerifier(new MyHostnameVerifier());
            HttpsURLConnection conn = (HttpsURLConnection)new URL(https).openConnection();
            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.connect();
            BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream())); 
            StringBuffer sb = new StringBuffer(); 
            String line; 
            while ((line = br.readLine()) != null) 
                sb.append(line);                
            text.setText(sb.toString());
           }catch(Exception e){
                Log.e(this.getClass().getName(), e.getMessage());
           }      
     }



      private class MyHostnameVerifier implements HostnameVerifier{
            @Override
            public boolean verify(String hostname, SSLSession session) {
                    // TODO Auto-generated method stub
                    return true;
            }

       }

       private class MyTrustManager implements X509TrustManager{
            @Override
            public void checkClientTrusted(X509Certificate[] chain, String authType)
                            throws CertificateException {
                    // TODO Auto-generated method stub  
            }
            @Override
            public void checkServerTrusted(X509Certificate[] chain, String authType)

                            throws CertificateException {
                    // TODO Auto-generated method stub    
            }
            @Override
            public X509Certificate[] getAcceptedIssuers() {
                    // TODO Auto-generated method stub
                    return null;
            }        

      }   
}

使用HttpsURLConnection时需要实现HostnameVerifier 和 X509TrustManager,这两个实现是必须的,要不会报安全验证异常。


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* @author 张兴业
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原文地址:https://www.cnblogs.com/xyzlmn/p/3168091.html