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如何启动安卓网络服务器服务？

androidhttpservice
3
我有一个名为WebServerService的服务，我希望在按下切换按钮时启动该服务。同时，该按钮也会启动一个对话框并通知用户。
我已经尝试了从我的主活动调用以下代码：
startService(new Intent(MyActivity.this, WebServerService.class));

但是应用程序界面会冻结，对话框不会弹出，该应用程序会强制关闭。 WebServerService 类的代码如下：

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;

public class WebServerService extends Service { 
    private WebServer server = null;

    @Override
    public void onCreate() {
        Log.i("HTTPSERVICE", "Creating and starting httpService");
        super.onCreate();
        server = new WebServer(this);
        server.startServer();   
    }

    @Override
    public void onDestroy() {
        Log.i("HTTPSERVICE", "Destroying httpService");
        server.stopServer();
        super.onDestroy();
    }

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }
}

我一直在努力让它工作。我也看过 AsyncTask，但不确定它是否适用于我的情况。非常感谢任何帮助或指引。

WebServer 类如下：

package com.xlnc.webapp;  
import java.io.IOException;  
import java.net.ServerSocket;  
import java.net.Socket;  
import java.net.SocketException;  

import org.apache.http.HttpException;
import org.apache.http.impl.DefaultConnectionReuseStrategy;
import org.apache.http.impl.DefaultHttpResponseFactory;
import org.apache.http.impl.DefaultHttpServerConnection;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.BasicHttpProcessor;
import org.apache.http.protocol.HttpRequestHandlerRegistry;
import org.apache.http.protocol.HttpService;
import org.apache.http.protocol.ResponseConnControl;
import org.apache.http.protocol.ResponseContent;
import org.apache.http.protocol.ResponseDate;
import org.apache.http.protocol.ResponseServer;

import android.content.Context;

public class WebServer {

public static boolean RUNNING = false;
public static int serverPort = 8080;

private static final String ALL_PATTERN = "*";
private static final String EXCEL_PATTERN = "/*.xls";
private static final String HOME_PATTERN = "/home.html";

private Context context = null;

private BasicHttpProcessor httpproc = null;
private BasicHttpContext httpContext = null;
private HttpService httpService = null;
private HttpRequestHandlerRegistry registry = null;

public WebServer(Context context) {
    this.setContext(context);

    httpproc = new BasicHttpProcessor();
    httpContext = new BasicHttpContext();

    httpproc.addInterceptor(new ResponseDate());
    httpproc.addInterceptor(new ResponseServer());
    httpproc.addInterceptor(new ResponseContent());
    httpproc.addInterceptor(new ResponseConnControl());

    httpService = new HttpService(httpproc,
        new DefaultConnectionReuseStrategy(), new DefaultHttpResponseFactory());

    registry = new HttpRequestHandlerRegistry();

    registry.register(HOME_PATTERN, new HomeCommandHandler(context));

    httpService.setHandlerResolver(registry);
}

private ServerSocket serverSocket;

public void runServer() {
    try {
        serverSocket = new ServerSocket(serverPort);

        serverSocket.setReuseAddress(true);

        while (RUNNING) {
            try {
                final Socket socket = serverSocket.accept();

                DefaultHttpServerConnection serverConnection = new DefaultHttpServerConnection();

                serverConnection.bind(socket, new BasicHttpParams());

                httpService.handleRequest(serverConnection, httpContext);

                serverConnection.shutdown();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (HttpException e) {
                e.printStackTrace();
            }
        }

        serverSocket.close();
    } catch (SocketException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    RUNNING = false;
}

public synchronized void startServer() {
    RUNNING = true;
    runServer();
}

public synchronized void stopServer() {
    RUNNING = false;
    if (serverSocket != null) {
        try {
            serverSocket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

public void setContext(Context context) {
    this.context = context;
}

public Context getContext() {
    return context;
}
}

编辑：以下是日志：

08-01 22:55:04.406: I/PackageManager(65): /data/app/vmdl40565.tmp changed; unpacking
08-01 22:55:04.550: D/installd(31): DexInv: --- BEGIN '/data/app/vmdl40565.tmp' ---
08-01 22:55:04.637: D/dalvikvm(143): GC freed 2787 objects / 185600 bytes in 239ms
08-01 22:55:05.226: D/dalvikvm(205): DexOpt: load 39ms, verify 132ms, opt 1ms
08-01 22:55:05.236: D/installd(31): DexInv: --- END '/data/app/vmdl40565.tmp' (success) ---
08-01 22:55:05.526: I/installd(31): move /data/dalvik-cache/data@app@vmdl40565.tmp@classes.dex -> /data/dalvik-cache/data@app@com.xlnc.webapp.apk@classes.dex
08-01 22:55:05.526: D/PackageManager(65): New package installed in /data/app/com.xlnc.webapp.apk
08-01 22:55:05.696: D/MountListener(65): handleEvent ums_disabled
08-01 22:55:05.756: D/MountListener(65): handleEvent ums_disconnected
08-01 22:55:05.766: D/AndroidRuntime(162): Shutting down VM
08-01 22:55:05.766: D/dalvikvm(162): DestroyJavaVM waiting for non-daemon threads to exit
08-01 22:55:05.766: D/dalvikvm(162): DestroyJavaVM shutting VM down
08-01 22:55:05.776: D/dalvikvm(162): HeapWorker thread shutting down
08-01 22:55:05.776: D/dalvikvm(162): HeapWorker thread has shut down
08-01 22:55:05.776: D/jdwp(162): JDWP shutting down net...
08-01 22:55:05.776: I/jdwp(162): adbd disconnected
08-01 22:55:05.789: D/dalvikvm(162): VM cleaning up
08-01 22:55:05.826: E/AndroidRuntime(162): ERROR: thread attach failed
08-01 22:55:05.826: D/dalvikvm(162): LinearAlloc 0x0 used 621708 of 5242880 (11%)
08-01 22:55:06.396: D/dalvikvm(65): GC freed 4364 objects / 319160 bytes in 245ms
08-01 22:55:06.596: D/MediaScannerService(179): start scanning volume internal
08-01 22:55:06.716: I/ActivityManager(65): Start proc com.android.mms for broadcast com.android.mms/.transaction.MmsSystemEventReceiver: pid=212 uid=10014 gids={3003, 1015}
08-01 22:55:07.306: D/installd(31): DexInv: --- BEGIN '/system/app/Mms.apk' ---
08-01 22:55:07.476: D/AndroidRuntime(210): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<
08-01 22:55:07.496: W/ResourceType(65): Resources don't contain package for resource number 0x7f0700e5
08-01 22:55:07.496: D/AndroidRuntime(210): CheckJNI is ON
08-01 22:55:07.508: W/ResourceType(65): Resources don't contain package for resource number 0x7f020031
08-01 22:55:07.508: W/ResourceType(65): Resources don't contain package for resource number 0x7f020030
08-01 22:55:07.508: W/ResourceType(65): Resources don't contain package for resource number 0x7f050000
08-01 22:55:07.516: W/ResourceType(65): Resources don't contain package for resource number 0x7f060000
08-01 22:55:07.667: W/ResourceType(65): Resources don't contain package for resource number 0x7f060001
08-01 22:55:08.236: D/AndroidRuntime(210): --- registering native functions ---
08-01 22:55:10.246: I/MediaProvider(179): Upgrading media database from version 0 to 78, which will destroy all old data
08-01 22:55:10.656: D/dalvikvm(219): DexOpt: load 677ms, verify 1526ms, opt 36ms
08-01 22:55:10.746: D/installd(31): DexInv: --- END '/system/app/Mms.apk' (success) ---
08-01 22:55:10.757: I/ActivityManager(65): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.xlnc.webapp/.WirelessDropActivity }
08-01 22:55:10.827: D/AndroidRuntime(210): Shutting down VM
08-01 22:55:10.827: D/dalvikvm(210): DestroyJavaVM waiting for non-daemon threads to exit
08-01 22:55:10.836: D/dalvikvm(210): DestroyJavaVM shutting VM down
08-01 22:55:10.836: D/dalvikvm(210): HeapWorker thread shutting down
08-01 22:55:10.836: D/dalvikvm(210): HeapWorker thread has shut down
08-01 22:55:10.836: D/jdwp(210): JDWP shutting down net...
08-01 22:55:10.836: I/jdwp(210): adbd disconnected
08-01 22:55:10.836: D/dalvikvm(210): VM cleaning up
08-01 22:55:10.916: E/AndroidRuntime(210): ERROR: thread attach failed
08-01 22:55:10.927: D/dalvikvm(210): LinearAlloc 0x0 used 637292 of 5242880 (12%)
08-01 22:55:11.076: I/ActivityManager(65): Start proc com.xlnc.webapp for activity com.xlnc.webapp/.WirelessDropActivity: pid=227 uid=10024 gids={3003}
08-01 22:55:11.746: D/(212): unable to unlink '/data/data/com.android.mms/shared_prefs/com.android.mms_preferences.xml.bak': No such file or directory (errno=2)
08-01 22:55:11.746: I/dalvikvm(165): Debugger has detached; object registry had 1 entries
08-01 22:55:11.756: D/(212): unable to unlink '/data/data/com.android.mms/shared_prefs/_has_set_default_values.xml.bak': No such file or directory (errno=2)
08-01 22:55:11.926: I/ARMAssembler(65): generated scanline__00000177:03515104_00000001_00000000 [ 73 ipp] (95 ins) at [0x3e1138:0x3e12b4] in 1170007 ns
08-01 22:55:12.026: I/ARMAssembler(65): generated scanline__00000077:03545404_00000004_00000000 [ 47 ipp] (67 ins) at [0x44e5b8:0x44e6c4] in 585431 ns
08-01 22:55:12.486: D/ddm-heap(212): Got feature list request
08-01 22:55:12.597: D/ddm-heap(227): Got feature list request
08-01 22:55:12.666: D/ddm-heap(165): Got feature list request
08-01 22:55:13.176: D/ddm-heap(179): Got feature list request
08-01 22:55:13.227: I/ActivityManager(65): Displayed activity com.xlnc.webapp/.WirelessDropActivity: 2203 ms (total 2203 ms)
08-01 22:55:13.346: I/ARMAssembler(65): generated scanline__00000077:03545404_00000A04_00000000 [ 29 ipp] (51 ins) at [0x437570:0x43763c] in 411860 ns
08-01 22:55:13.776: D/(165): unable to unlink '/data/data/com.android.alarmclock/shared_prefs/AlarmClock.xml.bak': No such file or directory (errno=2)
08-01 22:55:13.808: W/BackupManagerService(65): dataChanged but no participant pkg='com.android.providers.settings' uid=10017
08-01 22:55:13.877: W/BackupManagerService(65): dataChanged but no participant pkg='com.android.providers.settings' uid=10017
08-01 22:55:13.916: I/ActivityManager(65): Start proc com.android.email for broadcast com.android.email/com.android.exchange.BootReceiver: pid=240 uid=10023 gids={3003, 1015}
08-01 22:55:14.126: D/ddm-heap(240): Got feature list request
08-01 22:55:14.176: D/dalvikvm(29): GC freed 276 objects / 10576 bytes in 266ms
08-01 22:55:14.309: D/installd(31): DexInv: --- BEGIN '/system/app/Email.apk' ---
08-01 22:55:14.346: D/dalvikvm(29): GC freed 45 objects / 2000 bytes in 164ms
08-01 22:55:14.487: D/dalvikvm(29): GC freed 2 objects / 48 bytes in 139ms
08-01 22:55:17.596: D/dalvikvm(246): DexOpt: load 283ms, verify 2203ms, opt 85ms
08-01 22:55:17.665: D/installd(31): DexInv: --- END '/system/app/Email.apk' (success) ---
08-01 22:55:17.806: I/ActivityThread(240): Publishing provider com.android.email.provider: com.android.email.provider.EmailProvider
08-01 22:55:17.866: I/ActivityThread(240): Publishing provider com.android.email.attachmentprovider: com.android.email.provider.AttachmentProvider
08-01 22:55:18.036: D/Exchange(240): BootReceiver onReceive
08-01 22:55:18.086: D/EAS SyncManager(240): !!! EAS SyncManager, onCreate
08-01 22:55:18.456: D/EAS SyncManager(240): !!! EAS SyncManager, onStartCommand
08-01 22:55:18.586: D/EAS SyncManager(240): !!! EAS SyncManager, stopping self
08-01 22:55:19.186: I/ActivityManager(65): Start proc com.svox.pico for broadcast com.svox.pico/.VoiceDataInstallerReceiver: pid=252 uid=10012 gids={}
08-01 22:55:19.386: D/ddm-heap(252): Got feature list request
08-01 22:55:19.416: D/Eas Debug(240): Logging: 
08-01 22:55:19.456: D/installd(31): DexInv: --- BEGIN '/system/app/PicoTts.apk' ---
08-01 22:55:19.736: D/dalvikvm(258): DexOpt: load 40ms, verify 22ms, opt 1ms
08-01 22:55:19.736: D/installd(31): DexInv: --- END '/system/app/PicoTts.apk' (success) ---
08-01 22:55:19.821: D/EAS SyncManager(240): !!! EAS SyncManager, onDestroy
08-01 22:55:19.947: D/MediaScanner(179): opendir /system/media/ failed, errno: 2
08-01 22:55:19.966: D/MediaScanner(179):  prescan time: 12539ms
08-01 22:55:19.980: D/MediaScanner(179):     scan time: 48ms
08-01 22:55:19.980: D/MediaScanner(179): postscan time: 1ms
08-01 22:55:19.980: D/MediaScanner(179):    total time: 12588ms
08-01 22:55:20.124: D/MediaScannerService(179): done scanning volume internal
08-01 22:55:23.136: I/Notification(227): show Notification Entered
08-01 22:55:23.546: I/HTTPSERVICE(227): Creating and starting httpService
08-01 22:55:28.896: W/ResourceType(65): Resources don't contain package for resource number 0x7f0700e5
08-01 22:55:28.896: W/ResourceType(65): Resources don't contain package for resource number 0x7f020031
08-01 22:55:28.896: W/ResourceType(65): Resources don't contain package for resource number 0x7f020030
08-01 22:55:28.896: W/ResourceType(65): Resources don't contain package for resource number 0x7f050000
08-01 22:55:28.987: W/ResourceType(65): Resources don't contain package for resource number 0x7f060000
08-01 22:55:28.987: W/ResourceType(65): Resources don't contain package for resource number 0x7f060001
08-01 22:55:59.739: W/WindowManager(65): Key dispatching timed out sending to Service Started
08-01 22:55:59.739: W/WindowManager(65): Dispatch state: null
08-01 22:55:59.746: W/WindowManager(65): Current state:  {{null to Window{44e51758 Service Started paused=false} @ 1343861759751 lw=Window{44e51758 Service Started paused=false} lb=android.os.BinderProxy@44e515e0 fin=false gfw=true ed=true tts=0 wf=false fp=false mcf=Window{44e51758 Service Started paused=false}}}
08-01 22:55:59.816: I/ActivityManager(65): ANR in process: com.xlnc.webapp (last in com.xlnc.webapp)
08-01 22:55:59.816: I/ActivityManager(65): Annotation: keyDispatchingTimedOut
08-01 22:55:59.816: I/ActivityManager(65): CPU usage:
08-01 22:55:59.816: I/ActivityManager(65): Load: 1.45 / 0.77 / 0.29
08-01 22:55:59.816: I/ActivityManager(65): CPU usage from 30971ms to 54ms ago:
08-01 22:55:59.816: I/ActivityManager(65):   system_server: 4% = 2% user + 1% kernel / faults: 24 minor
08-01 22:55:59.816: I/ActivityManager(65):   com.svox.pico: 1% = 0% user + 0% kernel / faults: 2607 minor
08-01 22:55:59.816: I/ActivityManager(65):   d.process.acore: 0% = 0% user + 0% kernel / faults: 3 minor
08-01 22:55:59.816: I/ActivityManager(65):   m.android.phone: 0% = 0% user + 0% kernel / faults: 1 minor
08-01 22:55:59.816: I/ActivityManager(65):   qemud: 0% = 0% user + 0% kernel
08-01 22:55:59.816: I/ActivityManager(65):   adbd: 0% = 0% user + 0% kernel
08-01 22:55:59.816: I/ActivityManager(65):   com.xlnc.webapp: 0% = 0% user + 0% kernel
08-01 22:55:59.816: I/ActivityManager(65):   pdflush: 0% = 0% user + 0% kernel
08-01 22:55:59.816: I/ActivityManager(65):   logcat: 0% = 0% user + 0% kernel
08-01 22:55:59.816: I/ActivityManager(65): TOTAL: 5% = 3% user + 1% kernel
08-01 22:55:59.816: I/Process(65): Sending signal. PID: 227 SIG: 3
08-01 22:55:59.816: I/dalvikvm(227): threadid=7: reacting to signal 3
08-01 22:55:59.836: I/dalvikvm(227): Wrote stack trace to '/data/anr/traces.txt'
08-01 22:56:00.069: I/Process(65): Sending signal. PID: 65 SIG: 3
08-01 22:56:00.069: I/dalvikvm(65): threadid=7: reacting to signal 3
08-01 22:56:00.146: I/dalvikvm(65): Wrote stack trace to '/data/anr/traces.txt'
08-01 22:56:00.413: I/Process(65): Sending signal. PID: 252 SIG: 3
08-01 22:56:00.413: I/dalvikvm(252): threadid=7: reacting to signal 3
08-01 22:56:00.436: I/dalvikvm(252): Wrote stack trace to '/data/anr/traces.txt'
08-01 22:56:00.655: I/Process(65): Sending signal. PID: 240 SIG: 3
08-01 22:56:00.655: I/dalvikvm(240): threadid=7: reacting to signal 3
08-01 22:56:00.676: I/dalvikvm(240): Wrote stack trace to '/data/anr/traces.txt'
08-01 22:56:00.886: I/Process(65): Sending signal. PID: 165 SIG: 3
08-01 22:56:00.886: I/dalvikvm(165): threadid=7: reacting to signal 3
08-01 22:56:00.906: I/dalvikvm(165): Wrote stack trace to '/data/anr/traces.txt'
08-01 22:56:01.142: I/Process(65): Sending signal. PID: 212 SIG: 3
08-01 22:56:01.142: I/dalvikvm(212): threadid=7: reacting to signal 3
08-01 22:56:01.256: I/dalvikvm(212): Wrote stack trace to '/data/anr/traces.txt'
08-01 22:56:01.397: I/Process(65): Sending signal. PID: 179 SIG: 3
08-01 22:56:01.397: I/dalvikvm(179): threadid=7: reacting to signal 3
08-01 22:56:01.418: I/dalvikvm(179): Wrote stack trace to '/data/anr/traces.txt'
08-01 22:56:01.630: I/Process(65): Sending signal. PID: 118 SIG: 3
08-01 22:56:01.630: I/dalvikvm(118): threadid=7: reacting to signal 3
08-01 22:56:01.716: I/dalvikvm(118): Wrote stack trace to '/data/anr/traces.txt'
08-01 22:56:01.859: I/Process(65): Sending signal. PID: 143 SIG: 3
08-01 22:56:01.859: I/dalvikvm(143): threadid=7: reacting to signal 3
08-01 22:56:01.877: I/dalvikvm(143): Wrote stack trace to '/data/anr/traces.txt'
08-01 22:56:02.135: I/Process(65): Sending signal. PID: 116 SIG: 3
08-01 22:56:02.135: I/dalvikvm(116): threadid=7: reacting to signal 3
08-01 22:56:02.176: I/dalvikvm(116): Wrote stack trace to '/data/anr/traces.txt'
08-01 22:56:02.406: W/WindowManager(65): No window to dispatch pointer action 1
08-01 22:56:02.476: W/WindowManager(65): No window to dispatch pointer action 1
08-01 22:56:02.646: I/ARMAssembler(65): generated scanline__00000077:03515104_00000000_00000000 [ 33 ipp] (47 ins) at [0x480dd8:0x480e94] in 473574 ns
08-01 22:56:02.769: I/ARMAssembler(65): generated scanline__00000177:03515104_00001001_00000000 [ 91 ipp] (114 ins) at [0x480e98:0x481060] in 786862 ns
08-01 22:56:05.066: I/ActivityManager(65): Killing process com.xlnc.webapp (pid=227) at user's request
08-01 22:56:05.086: I/Process(65): Sending signal. PID: 227 SIG: 9
08-01 22:56:05.226: I/ActivityManager(65): Process com.xlnc.webapp (pid 227) has died.
08-01 22:56:05.226: W/ActivityManager(65): Scheduling restart of crashed service com.xlnc.webapp/.WebServerService in 83846ms
08-01 22:56:05.236: I/WindowManager(65): WIN DEATH: Window{44e72108 com.xlnc.webapp/com.xlnc.webapp.WirelessDropActivity paused=false}
08-01 22:56:05.236: I/WindowManager(65): WIN DEATH: Window{44e51758 Service Started paused=false}
08-01 22:56:05.346: E/gralloc(65): [unregister] handle 0x4811e8 still locked (state=40000001)
08-01 22:56:05.367: I/UsageStats(65): Unexpected resume of com.android.launcher while already resumed in com.xlnc.webapp
08-01 22:56:05.637: W/InputManagerService(65): Got RemoteException sending setActive(false) notification to pid 227 uid 10024
08-01 22:56:05.676: E/ActivityThread(65): Failed to find provider info for android.server.checkin
08-01 22:56:05.687: W/Checkin(65): Can't log event SYSTEM_SERVICE_LOOPING: java.lang.IllegalArgumentException: Unknown URL content://android.server.checkin/events
如果您能发布logcat，那就太好了。我猜测从Android 3.x开始，您不能在主UI线程内创建任何与互联网的连接。如果您能提供有关您的“WebServer”类的一些信息，那就更好了。 - SheIs_LeThiCongNhan
你好，我正在使用SDK 7来开发这个应用程序，遵循此教程：http://www.integratingstuff.com/2011/10/24/adding-a-webserver-to-an-android-app/。请查看所请求的logcat，附在此处：http://www.filefactory.com/file/252t8cc7hibd/n/log_txt。如果您需要或想查看其他内容，请告诉我。谢谢。 - kalz
感谢提供源链接。关于您的日志，它只有一行，所以很难猜测什么。您可以尝试以下快速技巧：使用adb logcat -c清除日志，然后让您的应用程序强制关闭，并使用adb logcat -d来转储新日志。 - SheIs_LeThiCongNhan
感谢您抽出时间查看问题。我没有检查之前的日志文件，这是我的疏忽。这是logcat dump的链接：http://www.filefactory.com/file/6r73k76vuzc7/n/log_txt。谢谢。 - kalz
1个回答
4
在服务中的onCreate()函数是由GUI线程调用的。你试图在GUI线程中运行整个Web服务器：你不会返回，而是一直停留在WebServer.runServer()函数中。对于任何“长时间”运行的任务，你需要将其放到一个新的非GUI线程中，以避免阻塞GUI线程。
Thread类甚至为你提供了取消线程的函数，该函数为selects()和其他等待操作抛出易于捕获的InterruptedException异常。没有必要使用一些潜在危险的STATIC“running”标志。请始终尝试避免使用任何类型的静态数据。
很好。另外WebServer不是一个Thread/ Runnable，@kalz应该考虑将其移动到线程/可运行的代码块中。 - SheIs_LeThiCongNhan
整段代码都需要清理。请记得，try/catch也有一个finally块来清理（在runServer（）的代码中）。stopServer（）不应该关闭其他地方需要的socket并将服务器线程留在某个未知状态。它只应该向正在运行的服务器线程发布一些“停止，请”。关于所有这些静态变量，请删除，删除，删除。当WebServer本身由于某些内部异常而停止时，还存在可能的错误情况。必须解决（通过向Activity发送通知）。 - Oliver
@SheIs_LeThiCongNhan：这正是我的答案所述的。 - Oliver
非常感谢Oliver和Shels_LeThiCongNhan的贡献，并指出了问题。 - kalz
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