OPPO手机
OPPO 手机Android6.0系统
Glide 4.0+ 版本
加载HTTPS的图片显示空白
图片显示空白
图片是保存在阿里云服务上，所以图片提供的地址都是https://开头的。整个测试过程一切正常，也准备发版本。突然在OPPO手机上，图片不显示，空白一片。赶紧连接上手机进行DEBUG，可以看到一堆错误。有错误信息就好处理了。错误提示如下：
证书错误
javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:328)
at com.android.okhttp.internal.http.SocketConnector.connectTls(SocketConnector.java:103)
at com.android.okhttp.Connection.connect(Connection.java:143)
...
at aoo.run(SourceFile:446)
Caused by: java.security.cert.CertificateException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
at com.android.org.conscrypt.TrustManagerImpl.checkTrusted(TrustManagerImpl.java:324)
at com.android.org.conscrypt.TrustManagerImpl.checkServerTrusted(TrustManagerImpl.java:225)
...
com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.connect(DelegatingHttpsURLConnection.java:89)
at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:25)
at alm.a(SourceFile:104)
...
at java.lang.Thread.run(Thread.java:818)
at aoo.run(SourceFile:446)
Caused by: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
at com.android.org.conscrypt.TrustManagerImpl.checkTrusted(TrustManagerImpl.java:324)
at
...
com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.connect(DelegatingHttpsURLConnection.java:89)
at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:25)
...
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
at aoo.run(SourceFile:446)
然后进行google错误信息“Trust anchor for certification path not found.”，能够搜到的答案就是让你设置自定义证书。可我并不想设置证书。 再看时间都是2016年或2017年的，使用glide还在2.0+时代，将哪些解决方法用到工程里，都是报错的。
解决
1. 添加第三方库
api "com.github.bumptech.glide:okhttp3-integration:4.7.1"
annotationProcessor 'com.github.bumptech.glide:compiler:4.7.1'
我使用的glide 4.7.1版本，所有添加这对应的版本也是4.7.1. 其中添加com.github.bumptech.glide:compiler是因为，不添加就会报错误
Failed to find GeneratedAppGlideModule. You should include an annotationProcessor compile dependency on com.github.bumptech.glide:compiler in your application and a @GlideModule annotated AppGlideModule implementation or LibraryGlideModules will be silently ignored
记得同步项目下。
2. 添加OkHttpAppGlideModule类
类的内容：
import android.content.Context;
import com.bumptech.glide.Registry;
import com.bumptech.glide.annotation.GlideModule;
import com.bumptech.glide.integration.okhttp3.OkHttpUrlLoader;
import com.bumptech.glide.load.model.GlideUrl;
import com.bumptech.glide.module.AppGlideModule;
import java.io.InputStream;
import okhttp3.OkHttpClient;
@GlideModule
public class OkHttpAppGlideModule extends AppGlideModule {
public void registerComponents(Context context, Registry registry) {
OkHttpClient client = UnsafeOkHttpClient.getUnsafeOkHttpClient();
registry.replace(GlideUrl.class, InputStream.class, new OkHttpUrlLoader.Factory(client));
}
}
3.添加UnsafeOkHttpClient类
类的内容：
import java.security.cert.CertificateException;
import java.util.concurrent.TimeUnit;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import okhttp3.OkHttpClient;
public class UnsafeOkHttpClient {
public static OkHttpClient getUnsafeOkHttpClient() {
try {
// Create a trust manager that does not validate certificate chains
final TrustManager[] trustAllCerts = new TrustManager[]{
new X509TrustManager() {
@Override
public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
}
@Override
public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
}
@Override
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return new java.security.cert.X509Certificate[]{};
}
}
};
// Install the all-trusting trust manager
final SSLContext sslContext = SSLContext.getInstance("SSL");
sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
// Create an ssl socket factory with our all-trusting manager
final SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();
OkHttpClient.Builder builder = new OkHttpClient.Builder();
builder.sslSocketFactory(sslSocketFactory, (X509TrustManager) trustAllCerts[0]);
builder.hostnameVerifier(new HostnameVerifier() {
@Override
public boolean verify(String hostname, SSLSession session) {
return true;
}
});
builder.connectTimeout(20, TimeUnit.SECONDS);
builder.readTimeout(20,TimeUnit.SECONDS);
OkHttpClient okHttpClient = builder.build();
return okHttpClient;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
4. 申明GlideMudle
在AndroidManifest.xml中添加申明：
<meta-data
android:name="com.****.OkHttpAppGlideModule"
android:value="AppGlideModule" />
其中的路径需要修改为自己项目的路径。
成功
再次运行时，成功显示图片。
小插曲
1. 图片的缓存问题。
当把图片的https://路径修改为http://进行访问成功，再次进行https://路径访问，尽然成功显示了。一开始以为是问题解决了，但是当手机重启后，https://路径还是无法显示图片。
2. 一直是失败，显示图片空白。
可在添加了一次重复的混淆-keep public class * implements com.bumptech.glide.module.GlideModule. 尽然可以了。 然后把这个混淆删除后，也是成功的。 那么原因只能是：glide的缓存问题。当多次访问同一个https://失败后，glide将此https://路径设置为无效路径，再次进行访问时直接就显示失败了。然后修改了下混淆，glide又进行访问了。（作者的猜测，没有进行源码阅读，有不对的地方请指正。）
参考文章： https://blog.csdn.net/u010232308/article/details/78085057
// END 2018-6-8 小小的开心吧
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