Okhttp从2.4升级到3.9.1对HTTPS认证的影响
严格意义上讲，本文不应属于这个系列，但由于前面两篇博客的代码是参考《Android Https相关完全解析 当OkHttp遇到Https》改写的，当时的okhttp框架的版本为2.4.0，但现在okhttp版本升级到了3.9.1，并且查了一下相关资料，发现okhttp从2.x到3.x版本的api变化比较大，因此我也尝试着将okhttp版本进行升级，并做简要记录与大家分享。
1.1 okhttp Jar包升级
将compile 'com.squareup.okhttp:okhttp:2.4.0'更新为compile 'com.squareup.okhttp3:okhttp:3.9.1'，Android Studio会自动下载3.9.1的okhttp jar包。
1.2 更新Api及修正相关编译错误
Rebuild project，会发现有许多错误
1.2.1 包名更新
Okhttp2.x的包名为com.squareup.okhttp
import com.squareup.okhttp.Call;
import com.squareup.okhttp.Callback;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;
但okhttp3.x已经变为okhttp3,如上面的包名则相对应变为：
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
1.2.2 OkHttpClient创建方式不同
okhttp2.x直接new OkHttpClient，而okhttp3.x 中提供了Builder，很好的使用了创建者设计模式
OkHttpClient.Builder okHttpClient = new OkHttpClient.Builder();
1.2.3 OkHttpClient参数的配置变化
之前okhttp2.x参数可以直接OkHttpClient.setConnectTimeout()设置，现在OkHttpClient使用创建者模式，需要在OkHttpClient.Builder上设置可配置的参数:
okHttpClient.connectTimeout(5, TimeUnit.SECONDS);
okHttpClient.readTimeout(5, TimeUnit.SECONDS);
1.2.4 setCookieHandler变为cookieJar
okhttp2.x调用OkHttpClient的setCookieHandler方法,CookieHandler 的子类CookieManager实现了cookie的具体管理方法，
mOkHttpClient.setCookieHandler(new CookieManager(null, CookiePolicy.ACCEPT_ORIGINAL_SERVER));
okhttp3中已经没有setCookieHandler方法了，而改成了cookieJar，需要在OkHttpClient的Builder的cookieJar方法中设置。
okHttpClient.cookieJar(new CookieJar() {
private final HashMap<HttpUrl, List<Cookie>> cookieStore = new HashMap<>();
@Override
public void saveFromResponse(HttpUrl url, List<Cookie> cookies) {
cookieStore.put(url, cookies);
}
@Override
public List<Cookie> loadForRequest(HttpUrl url) {
return null;
}
});
1.2.5 改造setSslSocketFactory
okhttp2.x的sslSocketFactory(SSLSocketFactory sslSocketFactory)已不推荐使用，取而代之的
public Builder sslSocketFactory(SSLSocketFactory sslSocketFactory, X509TrustManager trustManager)
因此我们可以将其改造为
mOkHttpClient = new OkHttpClient.Builder()
.sslSocketFactory(sslContext.getSocketFactory(), trustManager)
.build();
trustManager是X509TrustManager 的一个实例
trustManager = trustManagerForCertificates(certificates);
private X509TrustManager trustManagerForCertificates(InputStream in)
throws GeneralSecurityException {
CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
Collection<? extends Certificate> certificates = certificateFactory.generateCertificates(in);
if (certificates.isEmpty()) {
throw new IllegalArgumentException("expected non-empty set of trusted certificates");
}
// Put the certificates a key store.
char[] password = "123456".toCharArray(); // Any password will work.
KeyStore keyStore = newEmptyKeyStore(password);
int index = 0;
for (Certificate certificate : certificates) {
String certificateAlias = Integer.toString(index++);
keyStore.setCertificateEntry(certificateAlias, certificate);
}
// Use it to build an X509 trust manager.
KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance(
KeyManagerFactory.getDefaultAlgorithm());
keyManagerFactory.init(keyStore, password);
TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(
TrustManagerFactory.getDefaultAlgorithm());
trustManagerFactory.init(keyStore);
TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
if (trustManagers.length != 1 || !(trustManagers[0] instanceof X509TrustManager)) {
throw new IllegalStateException("Unexpected default trust managers:"
+ Arrays.toString(trustManagers));
}
return (X509TrustManager) trustManagers[0];
}
所以
/******************************
* 单向认证
******************************/
public void setOneWayCertificates(InputStream... certificates)
/******************************
* 双向认证
******************************/
public void setTwoWayCertificates(InputStream clientcertificates, InputStream... certificates)
可分别改造为：
/******************************
* 单向认证
******************************/
public void setOneWayCertificates(InputStream certificates){
X509TrustManager trustManager;
try{
trustManager = trustManagerForCertificates(certificates);
SSLContext sslContext = SSLContext.getInstance("TLS");
KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
TrustManagerFactory trustManagerFactory =
TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
trustManagerFactory.init(keyStore);
sslContext.init(
null,
new TrustManager[] { trustManager },
new SecureRandom());
mOkHttpClient = new OkHttpClient.Builder()
.sslSocketFactory(sslContext.getSocketFactory(), trustManager)
.build();
} catch (Exception e){
Log.e("OkHttpClientManager", e.getMessage());
}
}
/******************************
* 双向认证
******************************/
public void setTwoWayCertificates(InputStream clientCertificates, InputStream certificates) {
X509TrustManager trustManager;
try {
trustManager = trustManagerForCertificates(certificates);
SSLContext sslContext = SSLContext.getInstance("TLS");
//初始化keystore
KeyStore clientKeyStore = KeyStore.getInstance(KeyStore.getDefaultType());
clientKeyStore.load(clientCertificates, "123456".toCharArray());
KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
keyManagerFactory.init(clientKeyStore, "123456".toCharArray());
sslContext.init(
keyManagerFactory.getKeyManagers(),
new TrustManager[] { trustManager },
new SecureRandom());
mOkHttpClient = new OkHttpClient.Builder()
.sslSocketFactory(sslContext.getSocketFactory(), trustManager)
.build();
} catch (Exception e) {
e.printStackTrace();
}
}
1.2.6 Callback实现的接口和call的变化
okhttp2.x的callback方法是void onFailure(Request request, IOException e);void onResponse(Response response) throws IOException; okhttp3.x 的Callback方法为void onFailure(Call call, IOException e);void onResponse(Call call, Response response) throws IOException;okhttp3对Call做了更简洁的封装，okhttp3.x Call是个接口，okhttp的call是个普通class，一定要注意，无论哪个版本，call都不能执行多次，多次执行需要重新创建。于是
private void deliveryResult(final ResultCallback callback, Request request) {
mOkHttpClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Request request, IOException e) {
sendFailedStringCallback(request, e, callback);
}
@Override
public void onResponse(Response response) throws IOException {
try {
final String string = response.body().string();
if (callback.mType == String.class) {
sendSuccessResultCallback(string, callback);
} else {
Object o = mGson.fromJson(string, callback.mType);
sendSuccessResultCallback(o, callback);
}
} catch (IOException e) {
sendFailedStringCallback(response.request(), e, callback);
} catch (JsonParseException e) { //Json解析的错误
sendFailedStringCallback(response.request(), e, callback);
}
}
});
}
就变为：
private void deliveryResult(final ResultCallback callback, Request request) {
mOkHttpClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
sendFailedStringCallback(call.request(), e, callback);
}
@Override
public void onResponse(Call call, Response response) throws IOException {
try {
final String string = response.body().string();
if (callback.mType == String.class) {
sendSuccessResultCallback(string, callback);
} else {
Object o = mGson.fromJson(string, callback.mType);
sendSuccessResultCallback(o, callback);
}
} catch (IOException e) {
sendFailedStringCallback(response.request(), e, callback);
} catch (JsonParseException e) { //Json解析的错误
sendFailedStringCallback(response.request(), e, callback);
}
}
});
}
至此，改造完毕，我们分验证单向认证及双向认证均可得到如下log：
12-14 02:08:20.698 30391-30391/? D/MainActivity: Response is Hello world!
证明已可以正常通讯，说明我们okhttp3.x版本升级成功。
参考：
- https://github.com/square/okhttp/blob/3f7a3344a4c85aa3bbb879dabac5ee625ab987f3/samples/guide/src/main/java/okhttp3/recipes/CustomTrust.java#L54
- okhttp3与旧版本okhttp的区别分析
- okhttp3 使用详解及简单封装
完整代码可到我的github下载:
server: https://github.com/onroadtech/SpringbootBase/tree/springboot_https_self_signed_certificate_one_two_way_certificate
android:https://github.com/onroadtech/Android4HTTPS/tree/88aa11a9b224df1fd19a5120ff387e81dcd23867
本博文已同步发表于我的个人博客网站，欢迎转载指正并注明出处。
个人博客： www.onroad.tech
指正邮箱： onroad_tech@163.com
