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Android使用Glide加载https链接的图片不显示的原因

androidIT知识图片不显示不显示

愿君学长松，慎勿作桃李。这篇文章主要讲述Android使用Glide加载https链接的图片不显示的原因相关的知识，希望能为你提供帮助。
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。
【Android使用Glide加载https链接的图片不显示的原因】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();
} catch (IOException e) {
}
}
if (responseBody != null) {
responseBody.close();
}
}

@Override
public String getId() {
return url.getCacheKey();
}

@Override
public void cancel() {
}
}
 
OkHttpUrlLoader.java
/**
* < p> Title: OkHttpUrlLoader.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;
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;

public class OkHttpUrlLoader implements ModelLoader< GlideUrl, InputStream> {

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;
}

public Factory() {
this(getInternalClient());
}

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() {
}
}

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);
}
}
  还有一个是okhttp信任证书。
SSLSocketClient.java
/**
* < p> Title: SSLSocketClient.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;
import java.security.SecureRandom;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
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 android.util.Log;
/**
* < p> Title: SSLSocketClient< /p>
* < p> Description: < /p>
* @author tsj
* @date 2018 10 18
*/

public class SSLSocketClient {

//获取这个SSLSocketFactory
public static SSLSocketFactory getSSLSocketFactory() {
try {
SSLContext sslContext = SSLContext.getInstance("SSL");
sslContext.init(null, getTrustManager(), new SecureRandom());
return sslContext.getSocketFactory();
} catch (Exception e) {
throw new RuntimeException(e);
}
}

//获取TrustManager
private static TrustManager[] getTrustManager() {
TrustManager[] trustAllCerts = new TrustManager[]{
new X509TrustManager() {

@Override
public X509Certificate[] getAcceptedIssuers() {
return new X509Certificate[]{};
}
@Override
public void checkClientTrusted(X509Certificate[] chain,
String authType) throws CertificateException {
}
@Override
public void checkServerTrusted(X509Certificate[] chain,
String authType) throws CertificateException {
}
}
};
return trustAllCerts;
}

//获取HostnameVerifier
public static HostnameVerifier getHostnameVerifier() {
HostnameVerifier hostnameVerifier = new HostnameVerifier() {
@Override
public boolean verify(String hostname, SSLSession session) {
// TODO Auto-generated method stub
return true;
}
};
return hostnameVerifier;
}
}
在AndroidManifest.xml里面配置
< meta-data
android:name="com.example.androidtest.https.OkHttpGlideModule"
android:value="https://www.songbingjia.com/android/GlideModule" />
 
然后Activity是这样调用的
package com.example.androidtest;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import com.bumptech.glide.Glide;
public class MainActivity extends Activity {
private ImageView imageView;
private Button mButton;
private String url="https://image.baidu.com/search/detail?ct=503316480& z=0& ipn=d& word=%E7%99%BE%E5%BA%A6%E5%9B%BE%E7%89%87& step_word=& hs=0& pn=5& spn=0& di=94952282390& pi=0& rn=1& tn=baiduimagedetail& is=0%2C0& istype=0& ie=utf-8& oe=utf-8& in=& cl=2& lm=-1& st=undefined& cs=99355280%2C609648180& os=1002106675%2C4110592367& simid=2009090768%2C841445828& adpicid=0& lpn=0& ln=1902& fr=& fmq=1539876892817_R& fm=& ic=undefined& s=undefined& se=& sme=& tab=0& width=undefined& height=undefined& face=undefined& ist=& jit=& cg=& bdtype=13& oriquery=& objurl=http%3A%2F%2Fimgsrc.baidu.com%2Fimgad%2Fpic%2Fitem%2Fd01373f082025aaf5d53a7e3f0edab64034f1ab1.jpg& fromurl=ippr_z2C%24qAzdH3FAzdH3Frwtxtg_z%26e3Bv54AzdH3Fri5p5v5ry6t2ipAzdH3F8nl9cmma9& gsm=0& rpstart=0& rpnum=0& islist=& querylist=";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = (ImageView) findViewById(R.id.image);
mButton = (Button) findViewById(R.id.button);
mButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Glide.with(getApplicationContext()).load(url)
.placeholder(R.drawable.ic_launcher)
.error(R.drawable.ic_launcher)
.into(imageView);
}
});
}
}
这里的url是测试用的，建议将url换成你们自己的。
最后附上一张图片
 

Android使用Glide加载https链接的图片不显示的原因

文章图片

Android使用Glide加载https链接的图片不显示的原因

文章图片

参考文章：https://blog.csdn.net/u014752325/article/details/73217577
https://blog.csdn.net/u014752325/article/details/73185351

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