安卓 获取重定向Url最终地址

 

String Url = "http://suo.im/5phIx5";    // 重定向url
WebTool.GetRedirectUrl(context, Url, new CallBackUrl()
{
	@Override
	public void F(String lastUrl)
	{
        // lastUrl为重定向的最终地址
	}
});

package sci.tool;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import org.json.JSONObject;

import sci.tool.ThreadTool.ThreadPram;

import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.util.Log;
import android.net.Uri;
import android.webkit.WebView;
import android.webkit.WebViewClient;


/** WebTool.java: 网页信息获取，可在主线程中调用 
 * 1、byte[] GetBytes(final String url) 
 * 2、String GetString(String dataUrl) 
 * 3、JSONObject GetJSONObject(String jsonUrl)
 * 4、BitmapGetBitmap(String imgUrl) 
 * 5、Drawable GetDrawable(String imgUrl) 
 * 
 * 6、GetRedirectUrl(final Context context, final String url, final CallBackUrl call) —— 获取重定向url最终的地址信息，支持所有网址 
 * 7、GetUrlHref(String url) —— 获取url加载后页面中的href信息 
 * 8、OpenRedirectUrl(final Context context, String Url)	 —— 直接打开重定向后的地址
 * 
 * ----- 2018-6-7 上午11:00:03 scimence */
public class WebTool
{
	// 缓存Drawable图像
	private static HashMap DrawableDic = new HashMap();
	
	/** 从网络上下载图片,转为Drawable */
	public static Drawable GetDrawable(String imgUrl)
	{
		Drawable drawable = null;
		
		if (DrawableDic.containsKey(imgUrl))
			drawable = DrawableDic.get(imgUrl);	// 从缓存读取图像
		else
		{
			Bitmap bmp = GetBitmap(imgUrl);						// 从服务器端下载图像
			if (bmp != null) drawable = Bitmap2Drawable(bmp);			// 转化为Drawable
			if (drawable != null) DrawableDic.put(imgUrl, drawable);		// 记录图像
		}
		
		return drawable;
	}
	
	/** 从网络上下载图片资源 */
	public static Bitmap GetBitmap(String imgUrl)
	{
		Bitmap bmp = null;
		try
		{
			byte[] data = GetBytes(imgUrl);								// 下载数据
			bmp = BitmapFactory.decodeByteArray(data, 0, data.length);	// 载入Bitmap
		}
		catch (Exception e)
		{
			e.printStackTrace();
		}
		return bmp;
	}
	
	/** Bitmap转化为Drawable */
	public static Drawable Bitmap2Drawable(Bitmap bitmap)
	{
		BitmapDrawable drawable = new BitmapDrawable(bitmap);
		return drawable;
	}
	
	/** Drawable转化为Bitmap */
	public static Bitmap Drawable2Bitmap(Drawable drawable)
	{
		BitmapDrawable bitDrawable = (BitmapDrawable) drawable;
		return bitDrawable.getBitmap();
	}
	
	/** 获取url最终跳转的herf信息 */
	public static String GetUrlHref(String url)
	{
		// if (url.contains("t.seoniao.com")) // http://t.seoniao.com/to.php?t=ONOERIC8Z1
		{
			String data = GetString(url);	// 获取网址信息
			// 
			
			ArrayList herfList = new ArrayList();
			
			int start = 0;
			String hrefKey = "window.location.href=\"";
			while (data.contains(hrefKey))
			{
				int index = data.indexOf(hrefKey, start);
				if (index != -1)
				{
					int end = data.indexOf("\"", index + hrefKey.length());
					if (end != -1)
					{
						start = end + 1;
						
						String herf = data.substring(index + hrefKey.length(), end).trim();
						if (!herfList.contains(herf))
						{
							herfList.add(herf);
							if (herf.startsWith("weixin://"))
							{
								url = herf;
								break;
							}
						}
					}
				}
			}
		}
		
		Log.d("WebTool", "GetWeixinUrl -> " + url);
		return url;
	}
	
	/** 获取指定网址的数据 */
	public static String GetString(String dataUrl)
	{
		String Str = "";
		try
		{
			byte[] data = GetBytes(dataUrl);	// 下载数据
			Str = new String(data);				// 转化为字符串
		}
		catch (Exception e)
		{
			e.printStackTrace();
		}
		return Str;
	}
	
	/** 获取指定网址的数据为JSON */
	public static JSONObject GetJSONObject(String jsonUrl)
	{
		String webData = WebTool.GetString(jsonUrl);
		JSONObject webJson = null;
		try
		{
			webJson = new JSONObject(webData);
		}
		catch (Exception ex)
		{
			ex.printStackTrace();
		}
		return webJson;
	}
	
	// ------------------------
	// 直接打开链接url的重定向地址
	// ------------------------
	
	/** 打开链接url的重定向地址 */
	public static void OpenRedirectUrl(final Context context, String Url)
	{
		OpenRedirectUrl(context, Url, true);
	}
	
	/** 打开链接Url */
	private static void OpenRedirectUrl(final Context context, String Url, boolean reditect)
	{
		try
		{
			if (reditect)
			{
				WebTool.GetRedirectUrl(context, Url, new CallBackUrl()
				{
					@Override
					public void F(String fUrl)
					{
						OpenRedirectUrl(context, fUrl, false);
					}
				});
				
				return;
			}
			
			Uri uri = Uri.parse(Url);
			Intent intent = new Intent(Intent.ACTION_VIEW, uri);
			intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
			
			context.startActivity(intent);
		}
		catch (Exception ex)
		{
			Log.d("WebTool", "链接地址配置有误：" + Url);
		}
	}
	
	// ------------------------
	// 获取重定向后的url
	// ------------------------
	
	public static interface CallBackUrl
	{
		// 回调处理逻辑
		public void F(String url);
	}
	
	static final class UrlData
	{
		public List StartList = new ArrayList();
		public List FinishList = new ArrayList();
		public String CallUrl = "";
		public long currrentTimeMillion = System.currentTimeMillis();
		public boolean isClicked = false;
		
		public String url = "";
		
		public UrlData(String url)
		{
			this.url = url;
		}
	}
	
	// static List StartList = new ArrayList();
	// static List FinishList = new ArrayList();
	// static String CallUrl = "";
	// static long currrentTimeMillion = System.currentTimeMillis();
	// static boolean isClicked = false;
	
	static HashMap urlDic = new HashMap();
	
	/** 获取指定网址的数据 */
	public static void GetRedirectUrl(final Context context, final String url, final CallBackUrl call)
	{
		String LowerUrl = url.trim().toLowerCase();
		if (!LowerUrl.startsWith("http://") && !LowerUrl.startsWith("https://")) 	// 非网页地址，则直接返回
		{
			call.F(url);
			return;
		}
		
		// 在非主线程中执行网络请求，获取数据
		ThreadTool.RunInMainThread(new ThreadPram()
		{
			@Override
			public void Function()
			{
				if (!urlDic.containsKey(url))
				{
					urlDic.put(url, new UrlData(url));
				}
				final UrlData data = urlDic.get(url);
				
				if (data.isClicked && System.currentTimeMillis() - data.currrentTimeMillion > 3 * 1000) data.isClicked = false;
				if (!data.isClicked)
				{
					data.StartList.clear();
					data.FinishList.clear();
				}
				
				final WebView webView = new WebView(context);
				webView.loadUrl(url);
				webView.getSettings().setJavaScriptEnabled(true);
				
				webView.setWebViewClient(new WebViewClient()
				{
					// 页面加载开始
					@Override
					public void onPageStarted(WebView view, String url, Bitmap favicon)
					{
						Log.d("WebTool", "Start-> " + url);
						
						if (!data.StartList.contains(url))
						{
							data.StartList.add(url);		// 记录重定向的url信息
							waitCallBack(url);	//
						}
						
						// super.onPageStarted(view, url, favicon);
					}
					
					// 页面加载完成
					@Override
					public void onPageFinished(WebView view, String url)
					{
						Log.d("WebTool", "Finish -> " + url);
						if (data.StartList.contains(url))
						{
							if (!data.FinishList.contains(url))
							{
								data.FinishList.add(url);
								waitCallBack(url);
							}
						}
					}
					
					public void waitCallBack(String paramUrl)
					{
						data.CallUrl = paramUrl;
						data.currrentTimeMillion = System.currentTimeMillis();	// 重置当前时间值，延时等待后续重定向
						
						ThreadTool.RunInMainThread(new ThreadPram()
						{
							@Override
							public void Function()
							{
								if (!data.isClicked)
								{
									if (call != null && System.currentTimeMillis() >= data.currrentTimeMillion + 700)
									{
										data.isClicked = true;
										
										call.F(data.CallUrl);
										Log.d("WebTool", "CallUrl -> " + data.CallUrl);
									}
								}
							}
						}, 700);
					}
				});
			}
		});
	}
	
	// ------------------------
	// 网络数据载入
	// ------------------------
	
	static HashMap GetBytesDic = new HashMap();
	
	/** 获取指定网址的数据，函数可在任意线程中执行，包括主线程 */
	public static byte[] GetBytes(final String url)
	{
		final long KEY = System.currentTimeMillis();
		if (!GetBytesDic.containsKey(KEY)) GetBytesDic.put(KEY, null);
		
		// 在非主线程中执行网络请求，获取数据
		ThreadTool.RunInCachedThread(new ThreadPram()
		{
			@Override
			public void Function()
			{
				byte[] data = GetBytes_process(url);
				GetBytesDic.put(KEY, data);
			}
		});
		
		// 等待异步线程中的网络请求逻辑执行完成
		while (GetBytesDic.get(KEY) == null) 	// 未获取到数据则
		{
			if (System.currentTimeMillis() > KEY + 1000 * 3) break;	// 超出3秒则终止
			Sleep(50); // 延时等待异步线程逻辑执行完成
		}
		
		byte[] data = GetBytesDic.get(KEY);
		GetBytesDic.remove(KEY);
		
		return data;
	}
	
	/** 获取指定网址的数据 */
	public static byte[] GetBytes_process(String url)
	{
		byte[] data = new byte[0];
		try
		{
			URL webUrl = new URL(url);
			URLConnection con = webUrl.openConnection();	// 打开连接
			InputStream in = con.getInputStream();			// 获取InputStream
			
			data = InputStreamToByte(in);					// 读取输入流数据
		}
		catch (Exception e)
		{
			e.printStackTrace();
		}
		return data;
	}
	
	/** InputStream -> Byte */
	public static final byte[] InputStreamToByte(InputStream in)
	{
		byte[] bytes = {};
		
		try
		{
			ByteArrayOutputStream byteOutStream = new ByteArrayOutputStream();
			byte[] data = new byte[1024];
			int count = 0;
			while ((count = in.read(data, 0, 1024)) > 0)
			{
				byteOutStream.write(data, 0, count);
			}
			
			bytes = byteOutStream.toByteArray();
		}
		catch (Exception ex)
		{
			ex.printStackTrace();
		}
		return bytes;
	}
	
	/** 当前线程延时毫秒 */
	private static void Sleep(long timeMillion)
	{
		try
		{
			Thread.sleep(timeMillion);
		}
		catch (InterruptedException e)
		{
			e.printStackTrace();
		}
	}
	
}

线程辅助类： 

package sci.tool;
 
import java.util.concurrent.Executors;
import android.os.Handler;
import android.os.Looper;
 
 
/** 线程辅助处理类，用于在主线程和其他线程中执行逻辑 */
public class ThreadTool
{
	// 调用示例
	public static void Example()
	{
		ThreadTool.RunInMainThread(new ThreadPram()
		{
			@Override
			public void Function()
			{
				// TODO Auto-generated method stub
				// 在主线程执行逻辑
			}
		});
	}
	
	// ---------------------------------------------
	
	/** 线程辅助处理类对象参数 */
	public static abstract class ThreadPram
	{
		/** 需要在线程中执行的逻辑 */
		public abstract void Function();
	}
	
	/** 在主线程执行Function —— UI界面相关控件逻辑需在主线程中执行 */
	public static void RunInMainThread(final ThreadPram param)
	{
		getMainHandler().post(new Runnable()
		{
			@Override
			public void run()
			{
				param.Function();
			}
		});
	}
	
	/** 在主线程中延时delayMillis毫秒，执行Function —— UI界面相关控件逻辑需在主线程中执行 */
	public static void RunInMainThread(final ThreadPram param, long delayMillis)
	{
		getMainHandler().postDelayed(new Runnable()
		{
			@Override
			public void run()
			{
				param.Function();
			}
		}, delayMillis);
	}
	
	/** 在其他线程执行Function —— 网络请求需在主线程之外的其他线程执行 */
	public static void RunInCachedThread(final ThreadPram param)
	{
		Executors.newCachedThreadPool().execute(new Runnable()
		{
			@Override
			public void run()
			{
				param.Function();
			}
		});
	}
	
	/** 当前线程是否为主线程 */
	public static boolean isUiThread()
	{
		return Thread.currentThread() == Looper.getMainLooper().getThread();
	}
	
	/** 获取主线程Handler */
	public static Handler getMainHandler()
	{
		return new Handler(Looper.getMainLooper());
	}
	
	/** 获取当前线程Handler */
	public static Handler getCurrentHandler()
	{
		return new Handler(Looper.myLooper());
	}
	
}