android开发之retrofit+okhttp+https+
2016-03-03 本文已影响4705人
kingjang
由于开发中需要使用https与自有证书进行接口的请求。搜遍了google与baidu，出现最多的是“Android Https相关完全解析 当OkHttp遇到Https”这篇文章，结果我就依葫芦画瓢，复制了代码到项目中，并加入了cer文件，但最后结果还是请求失败，返回“javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.”。但是demo是可以正常访问的，百思不得其解。
于是又经过了漫长的google、baidu，最后发现有文章《为你的安卓应用实现自签名的 SSL 证书》提到一句话：“安卓的 SSLContext 自带的TrustManager无法让本文示例中提到的自签名证书通过验证. 解决的办法是自己定义一个 TrustManager 类. 然后用这个类去验证自签名证书.”。犹如醍醐灌顶，于是自定义一个TrustManager类，果然，成功了！
下面贴出代码，献给遇到同样问题的小伙伴们：
自定义TrustManager类:
private staticTrustManager[]getWrappedTrustManagers(TrustManager[] trustManagers) {
finalX509TrustManager originalTrustManager = (X509TrustManager) trustManagers[0];
return newTrustManager[]{
newX509TrustManager() {
publicX509Certificate[]getAcceptedIssuers() {
returnoriginalTrustManager.getAcceptedIssuers();
}
public voidcheckClientTrusted(X509Certificate[] certs, String authType) {
try{
originalTrustManager.checkClientTrusted(certs, authType);
}catch(CertificateException e) {
e.printStackTrace();
}
}
public voidcheckServerTrusted(X509Certificate[] certs, String authType) {
try{
originalTrustManager.checkServerTrusted(certs, authType);
}catch(CertificateException e) {
e.printStackTrace();
}
}
}
};
}
以下OKhttp是设置证书的方法:
private staticSSLSocketFactorygetSSLSocketFactory_Certificate(Context context, String keyStoreType,intkeystoreResId)
throwsCertificateException, KeyStoreException, IOException, NoSuchAlgorithmException, KeyManagementException {
CertificateFactory cf = CertificateFactory.getInstance("X.509");
InputStream caInput = context.getResources().openRawResource(keystoreResId);
Certificate ca = cf.generateCertificate(caInput);
caInput.close();
if(keyStoreType ==null|| keyStoreType.length() ==0) {
keyStoreType = KeyStore.getDefaultType();
}
KeyStore keyStore = KeyStore.getInstance(keyStoreType);
keyStore.load(null,null);
keyStore.setCertificateEntry("ca", ca);
String tmfAlgorithm = TrustManagerFactory.getDefaultAlgorithm();
TrustManagerFactory tmf = TrustManagerFactory.getInstance(tmfAlgorithm);
tmf.init(keyStore);
TrustManager[] wrappedTrustManagers =getWrappedTrustManagers(tmf.getTrustManagers());
SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(null, wrappedTrustManagers,null);
returnsslContext.getSocketFactory();
}
调用时把服务器生成的.cer证书放到raw目录下，然后调用：
SSLSocketFactory sslSocketFactory =getSSLSocketFactory_Certificate(context,"BKS", R.raw.XXX);
//new一个OkHttpClient
OkHttpClient okHttpClient = new OkHttpClient();
okHttpClient.setSslSocketFactory(sslSocketFactory);
Retrofit构造的adapter使用自定义okHttpClient
RestAdapter.Builder builder =newRestAdapter.Builder()
.setEndpoint(serverUrl)
.setClient(newOkClient(okHttpClient));
第一次使用简书，多多指教
