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android - AsyncTask 下载网页内容失败

转载 作者：行者123 更新时间：2023-11-29 23:49:36 24 4
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如果有人能告诉我我的代码有什么问题，我将无法使用 AsyncTask 类和 doinbackground 方法:它只会给我几行 html 代码，然后我得到一个错误:

 public class ApiWeather extends AsyncTask<String,Void,String>{

  @Override
  protected String doInBackground(String... urls) {
      String res="";
      URL url;
      HttpURLConnection httpURLConnection=null;
      try {
          url=new URL(urls[0]);
          httpURLConnection=(HttpURLConnection)url.openConnection();
          InputStream inputStream=httpURLConnection.getInputStream();
          InputStreamReader inputStreamReader=new 
InputStreamReader(inputStream);
          int Data=inputStreamReader.read();
          while (Data!= -1){
              char  characters=(char)Data;
              res+=characters;
                Data=inputStreamReader.read();
          }
            return res;



      } catch (Exception e) {
          e.printStackTrace();
      }

      return null;
  }


}
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    ApiWeather Task=new ApiWeather();
    String myres="";
    try {
        myres=Task.execute("http://www.posh24.se/kandisar").get();
    } catch (InterruptedException e) {
        e.printStackTrace();
    } catch (ExecutionException e) {
        e.printStackTrace();
    }

    Log.i("web content : ", myres);

}



}

这是我在下载一堆行后得到的错误:

06/26 19:19:50: Launching app
$ adb install-multiple -r -t -p com.example.luck.practiceproj E:\androidapps\practiceproj\app\build\intermediates\split-apk\debug\slices\slice_8.apk 
Split APKs installed
$ adb shell am start -n "com.example.luck.practiceproj/com.example.luck.practiceproj.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Client not ready yet..Waiting for process to come online
Connected to process 6563 on device emulator-5554
Capturing and displaying logcat messages from application. This behavior can be disabled in the "Logcat output" section of the "Debugger" settings page.
I/ck.practicepro: The ClassLoaderContext is a special shared library.
W/ck.practicepro: JIT profile information will not be recorded: profile file does not exits.
I/chatty: uid=10084(com.example.luck.practiceproj) identical 10 lines
W/ck.practicepro: JIT profile information will not be recorded: profile file does not exits.
I/InstantRun: starting instant run server: is main process
W/ck.practicepro: Accessing hidden method Landroid/view/View;->computeFitSystemWindows(Landroid/graphics/Rect;Landroid/graphics/Rect;)Z (light greylist, reflection)
W/ck.practicepro: Accessing hidden method Landroid/view/ViewGroup;->makeOptionalFitsSystemWindows()V (light greylist, reflection)
D/NetworkSecurityConfig: No Network Security Config specified, using platform default
I/ck.practicepro: Waiting for a blocking GC ProfileSaver
I/ck.practicepro: WaitForGcToComplete blocked ProfileSaver on AddRemoveAppImageSpace for 20.162ms
I/web content :: <!DOCTYPE html>
                 <html>
                 <head>











                 <title>Topp 100 Kändisar - Posh24</title>
                 <base href="/"/>
                    <meta charset="ut-8"></meta>
                    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"></meta>
                    <meta name="robots" content="index,follow"></meta>
                    <meta name="viewport" content="width=device-width, initial-scale=1.0"></meta>
                    <meta name="apple-mobile-web-app-title" content="Posh24"></meta>
                    <meta name="google-site-verification" content="5cYwmuFA8gRoL9MJB9nmvs0F8XT0pSFj6ZhYy8RWkF4"></meta>
                    <meta name="description" content="Lista över topp 100 kändisar just nu! Vi listar de hetaste och mest omskrivna kändisar just nu med nyheter, bilder och videos."></meta>
                    <link rel="apple-touch-icon" href="/apple-touch-icon.png"></link>
                    <link rel="shortcut icon" href="/favicon.ico"></link>
                    <link rel="canonical" href="http://www.posh24.se/kandisar"></link>
                    <link rel="alternate" type="application/rss+xml" href="/feed" title="Kändis och nöjesnyheter från Posh24"></link>
                 <link href="//fonts.googleapis.com/css?family=Open+Sans:400,400italic,700,700italic" rel="stylesheet" type="text/css"/>
                            <link href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet" type="text/css" />
                                <link href="css/news.css?p24v=54" rel="stylesheet" type="text/css" />


                            <script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>

                            <script type="text/javascript" src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>

                            <script type="text/javascript" src="scripts/news-min.js?p24v=54"></script>

                            <script type="text/javascript" src="//posh24se.disqus.com/embed.js"></script>

                 <script type="text/javascript">
                 $(document).ready(function(){
                    if(typeof(framework)!=='undefined') {
                        framework.onPageLoad({"layout":"viewsite","unique":"54","uniquePrefix":"p24v="});
                    }
                 });
                 </script>
                 </head>
                 <body>









                 <div class="container">
                    <div class="row">
                        <div class="col-xs-12">
                            <div id="webx_header_1"><nav class="navbar navbar-inverse menu" data-x-onload="menuCtrl.init">
                   <div class="container-fluid">
                     <div class="navbar-header">
                       <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#myNavbar">
                         <span class="icon-bar"></span>
                         <span class="icon-bar"></span>
                         <span class="icon-bar"></span> 
                       </button>
                       <a class="headerCenter" href="/">
                            <div class="logo"></div>
                      </a>
                     </div>
                     <div class="collapse navbar-collapse" id="myNavbar">
                       <ul class="nav navbar-nav">
                                    <li><a class="menuItem" href="/kandisar">Kändisar</a></li>
                                            <li><a class="menuItem" href="/nyheter">Senaste nytt</a></li>
                                    <li><a class="menuItem" href="/hant_i_sverige">Hänt i Sverige</a></li>
                                    <li><a class="menuItem" href="/svenska_kandisar">Svenska kändisar</a></li>
                                            <li class="visible-xs hidden-sm hidden-md hidden-lg"><a class="menuItem" href="/video">Video</a></li>
                                    <li class="visible-xs hidden-sm hidden-md hidden-lg"><a class="menuItem" href="/street_style">Street Style</a></li>
                              </ul>
                             <ul class="nav navbar-nav pull-right hidden-xs visible-sm visible-md visible-lg">
                        <li class="dropdown">
                            <a href="#" dropdown-toggle class="x-skip dropdown-toggle" data-toggle="dropdown">
                                <div class="toggle-icon"></div>
                            </a>
                            <ul class="dropdown-menu">
                                                    <li><a class="menuItem" href="/video">Video</a></li>
                                                    <li><a class="menuItem" href="/street_style">Street Style</a></li>
                                            </ul>
                        </li>
                      </ul>
                        </div>
                   </div>
                 </nav>
                 </div>
                        </div>  
                    </div>
                    <div class="row">
                        <div class="col-xs-12" id="banner_top">
                        </div>  
                    </div>
                    <div class="row">
                        <div class="col-xs-12 col-sm-6 col-md-8">
                            <div id="webx_center">


                 <div class="articleContainer contentBlock ">
                    <h1 class="header">Topp 100 kändisar</h1>   
                    <div class="channelList">
                        <div class="channels_nav">
                    <div class="title">Lista:</div>
                    <d
D/OpenGLRenderer: Skia GL Pipeline
D/: HostConnection::get() New Host Connection established 0xe50ffb00, tid 6589
I/ConfigStore: android::hardware::configstore::V1_0::ISurfaceFlingerConfigs::hasWideColorDisplay retrieved: 0
               android::hardware::configstore::V1_0::ISurfaceFlingerConfigs::hasHDRDisplay 
     retrieved: 0
     I/OpenGLRenderer: Initialized EGL, version 1.4
     D/OpenGLRenderer: Swap behavior 1
     W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED,         
     retrying without...
    D/OpenGLRenderer: Swap behavior 0
    D/EGL_emulation: eglCreateContext: 0xe8d83000: maj 3 min 1 rcv 4
    D/EGL_emulation: eglMakeCurrent: 0xe8d83000: ver 3 1 (tinfo 0xece31c00)
    E/eglCodecCommon: glUtilsParamSize: unknow param 0x000082da
                  glUtilsParamSize: unknow param 0x000082da
     D/EGL_emulation: eglMakeCurrent: 0xe8d83000: ver 3 1 (tinfo 0xece31c00)

我尝试了硬件和软件图形

最佳答案

在我看来，LogCat 正在截断您的日志消息的输出，因为其中塞满了太多的 HTML。在我看来，你的日志之后的错误日志与你的问题无关，所以我猜你的下载实际上是成功的。

关于android - AsyncTask 下载网页内容失败，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/51046020/

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