平时我们使用Glide加载http网址的图片的时候，图片可以正常加载出来，但是如果服务器端加上了安全认证，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）。 

我们如果不修改Glide的代码的话，是会出现

javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.这个异常，导致图片加载不出来。

okhttp我们使用ssl来信任的所有证书，但是glide使用的自己的网络请求来加载的图片，也就是说，想要用glide访问https图片，就必须替换掉glide原始加载图片的方法，使其同样做到信任所有证书。

所以需要修改Glide的OkHttpGlideModule.class  OkHttpStreamFetcher.class OkHttpUrlLoader.class这三个类，

OkHttpGlideModule.java

package com.example.androidtest.https;
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.example.androidtest.SSLSocketClient;

import java.io.InputStream;

import okhttp3.OkHttpClient;

public class OkHttpGlideModule implements GlideModule {
@Override
public void applyOptions(Context context, GlideBuilder builder) {
}

@Override
public void registerComponents(Context context, Glide glide) {
OkHttpClient mHttpClient = new OkHttpClient().newBuilder()
.sslSocketFactory(SSLSocketClient.getSSLSocketFactory())
.hostnameVerifier(SSLSocketClient.getHostnameVerifier())
.build();
glide.register(GlideUrl.class, InputStream.class, new OkHttpUrlLoader.Factory(mHttpClient));
}
}

 

OkHttpStreamFetcher.java

/**
* <p>Title: OkHttpStreamFetcher.java</p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2017</p>
* <p>Company: www.baidudu.com</p>
* @author tsj
* @date 2018 10 18
* @version 1.0
*/
package com.example.androidtest.https;

/**
* <p>Title: OkHttpStreamFetcher</p>
* <p>Description: </p>
* @author tsj
* @date 2018 10 18
*/
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;

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