最近在开发项目中发现一个问题，由于我们项目中用的是比较早的一个开源图片加载框架UniversalImageLoader，服务器返回的图片是https开头的链接的时候会发现没办法加载图片。
这时候我们就需要通过设置uil支持https请求，uil里面有个类是下载图片ImageDownloader，这个类是关键，图片下载就是通过这个类来实现。我们需要通过实现ImageDownloader这个类，然后通过ImageLoaderConfiguration.imageDownloader(newAuthHttpsImageDownloader(mContext,5*1000,30*1000)) 这个来设置。代码如下：
importandroid.content.Context;
importcom.nostra13.universalimageloader.core.download.BaseImageDownloader;
importjava.io.BufferedInputStream;
importjava.io.IOException;
importjava.io.InputStream;
importjava.net.HttpURLConnection;
importjava.net.MalformedURLException;
importjava.net.URL;
importjava.security.KeyManagementException;
importjava.security.NoSuchAlgorithmException;
importjavax.net.ssl.HostnameVerifier;
importjavax.net.ssl.HttpsURLConnection;
importjavax.net.ssl.SSLContext;
importjavax.net.ssl.SSLSession;
importjavax.net.ssl.SSLSocketFactory;
public class AuthHttpsImageDownloader extends BaseImageDownloader {
private SSLSocketFactory mSSLSocketFactory;
public AuthHttpsImageDownloader(Context context) {
super(context);
SSLContext sslContext = sslContextForTrustedCertificates();
mSSLSocketFactory = sslContext.getSocketFactory();
}
public AuthImageDownloader(Context context, int connectTimeout, int readTimeout) {
super(context, connectTimeout, readTimeout);
SSLContext sslContext = sslContextForTrustedCertificates();
mSSLSocketFactory = sslContext.getSocketFactory();
}
@Override
protected InputStream getStreamFromNetwork(String imageUri, Object extra) throws IOException {
URL url = null;
try {
url = new URL(imageUri);
} catch (MalformedURLException e) {
}
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(connectTimeout);
conn.setReadTimeout(readTimeout);
if (conn instanceof HttpsURLConnection) {
((HttpsURLConnection)conn).setSSLSocketFactory(mSSLSocketFactory);
((HttpsURLConnection)conn).setHostnameVerifier((DO_NOT_VERIFY));
}
return new BufferedInputStream(conn.getInputStream(), BUFFER_SIZE);
}
// always verify the host - dont check for certificate
final HostnameVerifier DO_NOT_VERIFY = new HostnameVerifier() {
@Override
public boolean verify(String hostname, SSLSession session) {
return true;
}
};
//设置ssl信任证书
public SSLContext sslContextForTrustedCertificates() {
javax.net.ssl.TrustManager[] trustAllCerts = new javax.net.ssl.TrustManager[1];
javax.net.ssl.TrustManager tm = new miTM();
trustAllCerts[0] = tm;
SSLContext sc = null;
try {
sc = SSLContext.getInstance("SSL");
sc.init(null, trustAllCerts, null);
//javax.net.ssl.HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}catch (KeyManagementException e) {
e.printStackTrace();
}finally {
return sc;
}
}
class miTM implements javax.net.ssl.TrustManager, javax.net.ssl.X509TrustManager {
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return null;
}
public boolean isServerTrusted(java.security.cert.X509Certificate[] certs) {
return true;
}
public boolean isClientTrusted(java.security.cert.X509Certificate[] certs) {
return true;
}
public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType)
throws java.security.cert.CertificateException {
return;
}
public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType)
throws java.security.cert.CertificateException {
return;
}
}
}
通过以上方法就可以解决https图片加载问题了