Android Glide加载自签名的https图片

释放双眼,带上耳机,听听看~!

 

前言

Glide默认加载http或者通过CA认证了的https图片都是没问题的,但是当加载自签名的https图片的时候就会报如下错误(证书路径验证异常)。

 

一,原理

对于加载自签名的https图片,我们需要通过GlideModule来进行网络请求库的定制。如果你使用的是OkHttp网络请求库,则需要在app的build.gradle 中添加如下依赖:

compile 'com.github.bumptech.glide:okhttp-integration:1.4.0@aar'

使用的是Volley网络请求库,则添加依赖为:

compile 'com.github.bumptech.glide:volley-integration:1.3.1@aar'

这里主要讲使用OkHttp网络请求库的时候如何通过GlideModule来定制我们的Glide。
通过添加的依赖源码其中一个类OkHttpGlideModule 可以看出,


import android.content.Context;
import com.alpha58.okhttps.utils.HTTPSUtils;
import com.bumptech.glide.Glide;
import com.bumptech.glide.GlideBuilder;
import com.bumptech.glide.load.model.GlideUrl;
import com.bumptech.glide.module.GlideModule;
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());
}
}

源码是通过自定义一个类OkHttpGlideModule实现GlideModule,实现该类主要有2个方法:
applyOptions方法主要是处理图片质量,缓存等。
registerComponents方法主要是改变Glide的网络栈,让它能从自签名HTTPS服务器接收连接和图片。
我们看到在registerComponents方法中new OkHttpUrlLoader.Factory()方法创建了一个okhttpclient对象,点进去看见还有一个相同的带参数的方法

/**
* Constructor for a new Factory that runs requests using given client.
*/
public Factory(OkHttpClient client) {
this.client = client;
}

这里可以传入一个我们自己的okhttpclient对象,所以如果将我们已经通过认证的okhttpclient传进来替换这个对象就可以解决。

二,解决步骤(非常简单):

1、在build.gradle中添加依赖:

compile 'com.squareup.okhttp3:okhttp:3.6.0'
compile 'com.github.bumptech.glide:glide:3.7.0'
compile 'com.github.bumptech.glide:okhttp-integration:1.4.0@aar'

2、拷贝’com.github.bumptech.glide:okhttp-integration:1.4.0@aar’里面3个类OkHttpGlideModule ,OkHttpUrlLoader,OkHttpStreamFetcher到项目中(三个类源码,文章末尾贴出)

注意:OkHttpGlideModule 类的registerComponents方法需要传入已经通过认证的okhttpclient进来替换。如何配置通过认证的okhttpclient看我的另一篇文章:Android使用OkHttp请求自签名的https网站

3、删除在build.gradle中的依赖:

compile 'com.github.bumptech.glide:okhttp-integration:1.4.0@aar'

4、在AndroidManifest中配置刚刚拷贝过来的OkHttpGlideModule。

<!--配置glide加载https所需要的GlideModule-->
<meta-data
android:name="com.alpha58.okhttps.https.OkHttpGlideModule"
android:value="GlideModule"/>

好了,这个时候我们用Glide就可以将自签名的https图片加载出来啦!

public void getHttpsImg(View view) {
//自签名https图片链接 (如果链接失效,自行到12306网站找图片)
String url = "https://travel.12306.cn/imgs/resources/uploadfiles/images/a9b9c76d-36ba-4e4a-8e02-9e6a1a991da0_news_W540_H300.jpg";
Glide.with(this)
.load(url)
.asBitmap()
.into(mIv_img);
}

贴上三个类源码,分别如下:

OkHttpGlideModule类:

package com.alpha58.okhttps.https;
import android.content.Context;
import com.alpha58.okhttps.utils.HTTPSUtils;
import com.bumptech.glide.Glide;
import com.bumptech.glide.GlideBuilder;
import com.bumptech.glide.load.model.GlideUrl;
import com.bumptech.glide.module.GlideModule;
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) {
//注意:new HTTPSUtils(context).getInstance()为已经通过认证的okhttpclient
glide.register(GlideUrl.class, InputStream.class, new OkHttpUrlLoader.Factory(new HTTPSUtils(context).getInstance()));
}
}

OkHttpUrlLoader类:

package com.alpha58.okhttps.https;
import android.content.Context;
import com.bumptech.glide.load.data.DataFetcher;
import com.bumptech.glide.load.model.GenericLoaderFactory;
import com.bumptech.glide.load.model.GlideUrl;
import com.bumptech.glide.load.model.ModelLoader;
import com.bumptech.glide.load.model.ModelLoaderFactory;
import java.io.InputStream;
import okhttp3.OkHttpClient;
/**
* author           Alpha58
* time             2017/1/5 22:57
* desc             ${TODO}
* <p>
* upDateAuthor     $Author$
* upDate           $Date$
* upDateDesc       ${TODO}
*/
public class OkHttpUrlLoader implements ModelLoader<GlideUrl, InputStream> {
/**
* The default factory for {@link OkHttpUrlLoader}s.
*/
public static class Factory implements ModelLoaderFactory<GlideUrl, InputStream> {
private static volatile OkHttpClient internalClient;
private                 OkHttpClient client;
private static OkHttpClient getInternalClient() {
if (internalClient == null) {
synchronized (Factory.class) {
if (internalClient == null) {
internalClient = new OkHttpClient();
}
}
}
return internalClient;
}
/**
* Constructor for a new Factory that runs requests using a static singleton client.
*/
public Factory() {
this(getInternalClient());
}
/**
* Constructor for a new Factory that runs requests using given client.
*/
public Factory(OkHttpClient client) {
this.client = client;
}
@Override
public ModelLoader<GlideUrl, InputStream> build(Context context, GenericLoaderFactory factories) {
return new OkHttpUrlLoader(client);
}
@Override
public void teardown() {
// Do nothing, this instance doesn't own the client.
}
}
private final OkHttpClient client;
public OkHttpUrlLoader(OkHttpClient client) {
this.client = client;
}
@Override
public DataFetcher<InputStream> getResourceFetcher(GlideUrl model, int width, int height) {
return new OkHttpStreamFetcher(client, model);
}
}

OkHttpStreamFetcher类:

package com.alpha58.okhttps.https;
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
}
}

Demo地址:https://github.com/wildma/okhttps
参考文章:Glide — Customize Glide with Modules

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