您的服务器不支持 SSLv3，因为它存在一些安全问题，不应使用。
使用 Kitkat 之前的 Android 版本时，您必须使用移除 SSLv3 以用作默认配置的套接字工厂：
public class VolleyToolboxExtension extends Volley {
/** Default on-disk cache directory. */
private static final String DEFAULT_CACHE_DIR = "volley";
/**
* Creates a default instance of the worker pool and calls {@link RequestQueue#start()} on it.
*
* @param context A {@link Context} to use for creating the cache dir.
* @param stack An {@link HttpStack} to use for the network, or null for default.
* @return A started {@link RequestQueue} instance.
*/
public static RequestQueue newRequestQueue(Context context, HttpStack stack) {
File cacheDir = new File(context.getCacheDir(), DEFAULT_CACHE_DIR);
String userAgent = "volley/0";
try {
String packageName = context.getPackageName();
PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0);
userAgent = packageName + "/" + info.versionCode;
} catch (PackageManager.NameNotFoundException e) {
}
if (stack == null) {
if (Build.VERSION.SDK_INT >= 9) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
// Use a socket factory that removes sslv3
stack = new HurlStack(null, new NoSSLv3Compat.NoSSLv3Factory());
} else {
stack = new HurlStack();
}
} else {
// Prior to Gingerbread, HttpUrlConnection was unreliable.
// See: http://android-developers.blogspot.com/2011/09/androids-http-clients.html
stack = new HttpClientStack(AndroidHttpClient.newInstance(userAgent));
}
}
Network network = new BasicNetwork(stack);
RequestQueue queue = new RequestQueue(new DiskBasedCache(cacheDir), network);
queue.start();
return queue;
}
/**
* Creates a default instance of the worker pool and calls {@link RequestQueue#start()} on it.
*
* @param context A {@link Context} to use for creating the cache dir.
* @return A started {@link RequestQueue} instance.
*/
public static RequestQueue newRequestQueue(Context context) {
return newRequestQueue(context, null);
}
}
NoSSLv3Compat 类可以在这里找到：
https://github.com/Floens/volley/blob/master/src/com/android/volley/compat/NoSSLv3Compat.java
使用这个扩展来创建你的请求队列：
/**
* @return The Volley Request queue, the queue will be created if it is null
*/
public RequestQueue getRequestQueue() {
// lazy initialize the request queue, the queue instance will be
// created when it is accessed for the first time
if (mRequestQueue == null) {
// Create the request queue
mRequestQueue = VolleyToolboxExtension.newRequestQueue(getApplicationContext());
}
return mRequestQueue;
}
您也可以使用 Retrofit 代替 Volley，因为 Square 发布了支持 TLS 版本配置的该库的 2.1 版本：
http://square.github.io/retrofit/