前言
在android应用中，Glide这个工具库想必大家已经很熟悉了，它主要是用来加载和显示图片的。最近项目服务器url由http切换到https，所有使用Glide加载网络图片的地方都失败，原因是Glide默认是http请求。
也就是说，想用Gilde加载自签名的https图片，必须修改Glide加载图片的方法。本文通过使用okhttp信任自签名证书的方法来修改GlideModule来实现。
1.下载com.github.bumptech.glide:okhttp.integration:1.4.0@aar包
可以通过在buile.gradle中添加依赖com.github.bumptech.glide:okhttp-integration:1.4.0@aar下载,下载后的文件在 “C盘/用户/用户名/.gradle/caches/modules-2/files-2.1下面”（下载完后记得把依赖删掉）
2.拷贝其中三个类OkHttpGlideModule，OkHttpUrlLoader，OkHttpStreamFetcher到工程中
OkHttpGlideModule.class
import android.content.Context;
import com.bumptech.glide.Glide;
import com.bumptech.glide.GlideBuilder;
import com.bumptech.glide.load.model.GlideUrl;
import com.bumptech.glide.module.GlideModule;
import com.changhong.park.pda.utils.HTTPSUtils;
import java.io.InputStream;
/**
* A {@link GlideModule} implementation to replace Glide's default
* {@link java.net.HttpURLConnection} based {@link com.bumptech.glide.load.model.ModelLoader} with an OkHttp based
* {@link com.bumptech.glide.load.model.ModelLoader}.
*
* <p>
* If you're using gradle, you can include this module simply by depending on the aar, the module will be merged
* in by manifest merger. For other build systems or for more more information, see
* {@link GlideModule}.
* </p>
*/
public class OkHttpGlideModule implements GlideModule {
@Override
public void applyOptions(Context context, GlideBuilder builder) {
// Do nothing.
}
@Override
public void registerComponents(Context context, Glide glide) {
glide.register(GlideUrl.class, InputStream.class, new OkHttpUrlLoader.Factory(new OKHttpUtils(context).getHttpClient()));
}
}
OkHttpStreamFetcher.class
import com.bumptech.glide.Priority;
import com.bumptech.glide.load.data.DataFetcher;
import com.bumptech.glide.load.model.GlideUrl;
import com.bumptech.glide.util.ContentLengthInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
import okhttp3.ResponseBody;
/**
* Fetches an {@link InputStream} using the okhttp library.
*/
public class OkHttpStreamFetcher implements DataFetcher<InputStream> {
private final OkHttpClient client;
private final GlideUrl url;
private InputStream stream;
private ResponseBody responseBody;
public OkHttpStreamFetcher(OkHttpClient client, GlideUrl url) {
this.client = client;
this.url = url;
}
@Override
public InputStream loadData(Priority priority) throws Exception {
Request.Builder requestBuilder = new Request.Builder()
.url(url.toStringUrl());
for (Map.Entry<String, String> headerEntry : url.getHeaders().entrySet()) {
String key = headerEntry.getKey();
requestBuilder.addHeader(key, headerEntry.getValue());
}
Request request = requestBuilder.build();
Response response = client.newCall(request).execute();
responseBody = response.body();
if (!response.isSuccessful()) {
throw new IOException("Request failed with code: " + response.code());
}
long contentLength = responseBody.contentLength();
stream = ContentLengthInputStream.obtain(responseBody.byteStream(), contentLength);
return stream;
}
@Override
public void cleanup() {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
// Ignored
}
}
if (responseBody != null) {
responseBody.close();
}
}
@Override
public String getId() {
return url.getCacheKey();
}
@Override
public void cancel() {
// TODO: call cancel on the client when this method is called on a background thread. See #257
}
}
OkHttpUrlLoader.class
import com.bumptech.glide.Priority;
import com.bumptech.glide.load.data.DataFetcher;
import com.bumptech.glide.load.model.GlideUrl;
import com.bumptech.glide.util.ContentLengthInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
import okhttp3.ResponseBody;
/**
* Fetches an {@link InputStream} using the okhttp library.
*/
public class OkHttpStreamFetcher implements DataFetcher<InputStream> {
private final OkHttpClient client;
private final GlideUrl url;
private InputStream stream;
private ResponseBody responseBody;
public OkHttpStreamFetcher(OkHttpClient client, GlideUrl url) {
this.client = client;
this.url = url;
}
@Override
public InputStream loadData(Priority priority) throws Exception {
Request.Builder requestBuilder = new Request.Builder()
.url(url.toStringUrl());
for (Map.Entry<String, String> headerEntry : url.getHeaders().entrySet()) {
String key = headerEntry.getKey();
requestBuilder.addHeader(key, headerEntry.getValue());
}
Request request = requestBuilder.build();
Response response = client.newCall(request).execute();
responseBody = response.body();
if (!response.isSuccessful()) {
throw new IOException("Request failed with code: " + response.code());
}
long contentLength = responseBody.contentLength();
stream = ContentLengthInputStream.obtain(responseBody.byteStream(), contentLength);
return stream;
}
@Override
public void cleanup() {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
// Ignored
}
}
if (responseBody != null) {
responseBody.close();
}
}
@Override
public String getId() {
return url.getCacheKey();
}
@Override
public void cancel() {
// TODO: call cancel on the client when this method is called on a background thread. See #257
}
}
3.添加信任自定义证书工具类，下面贴出重要方法
public SSLSocketFactory getSSLSocketFactory(X509TrustManager trustManager) {
SSLSocketFactory sslSocketFactory;
try {
SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(null, new TrustManager[]{trustManager}, null);
sslSocketFactory = sslContext.getSocketFactory();
} catch (GeneralSecurityException e) {
throw new RuntimeException(e);
}
return sslSocketFactory;
}
private X509TrustManager getX509TrustManager()
throws GeneralSecurityException {
InputStream inputStream = null;
try {
inputStream = mContext.getAssets().open("server.cer");
}catch (IOException e){
e.printStackTrace();
}
CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
Collection<? extends Certificate> certificates = certificateFactory.generateCertificates(inputStream);
if (certificates.isEmpty()) {
throw new IllegalArgumentException("expected non-empty set of trusted certificates");
}
// Put the certificates a key store.
char[] password = "test".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];
}
4.builde.gradule 添加依赖 com.github.bumptech.glide:glide:3.7.0，在Androidmanifest中配置GlideModule（用自定义的替换默认的）
compile 'com.github.bumptech.glide:glide:3.7.0'
<meta-data
android:name="com.test.http.OkHttpGlideModule"
android:value="GlideModule"/>
5.加载图片（加载失败时重试）
Glide.with(PhotoActivity.this)
.load(url)
.asBitmap()
.listener(new RequestListener<String, Bitmap>() {
@Override
public boolean onException(Exception e, String model, Target<Bitmap> target, boolean isFirstResource) {
//加载失败时重试
handler.postDelayed(new Runnable() {
@Override
public void run() {
loadPhoto(photoView,url);
}
}, 5000);
return false;
}
@Override
public boolean onResourceReady(Bitmap resource, String model, Target<Bitmap> target, boolean isFromMemoryCache, boolean isFirstResource) {
return false;
}
})
.into(photoView);
最近项目中正好遇到这个问题，记录下来跟大家分享，欢迎交流！
