使用Jsoup解析Html时出错
我想解析html网站并获取字符串值。 但是在解析div类时我收到错误。
我写了上面的代码，但我收到了错误。
try { doc = Jsoup.connect("http://tvrehberi.hurriyet.com.tr/program-detay/308271/deli-deli-olma").get(); List saatItem = new ArrayList(); for (Element iterable : doc.getElementsByClass("content&clear")) { saatItem.add(iterable.text()); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }
此错误导致类具有空白字符。 如果类值没有空白字符，则代码运行完美。 我怎么解决这个问题 ？
错误日志：
02-06 00:18:53.770: E/AndroidRuntime(28775): FATAL EXCEPTION: main 02-06 00:18:53.770: E/AndroidRuntime(28775): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.htmlparsingtutorial/com.example.htmlparsingtutorial.MainActivity}: android.os.NetworkOnMainThreadException 02-06 00:18:53.770: E/AndroidRuntime(28775): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2100) 02-06 00:18:53.770: E/AndroidRuntime(28775): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2125) 02-06 00:18:53.770: E/AndroidRuntime(28775): at android.app.ActivityThread.access$600(ActivityThread.java:140) 02-06 00:18:53.770: E/AndroidRuntime(28775): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1227) 02-06 00:18:53.770: E/AndroidRuntime(28775): at android.os.Handler.dispatchMessage(Handler.java:99) 02-06 00:18:53.770: E/AndroidRuntime(28775): at android.os.Looper.loop(Looper.java:137) 02-06 00:18:53.770: E/AndroidRuntime(28775): at android.app.ActivityThread.main(ActivityThread.java:4898) 02-06 00:18:53.770: E/AndroidRuntime(28775): at java.lang.reflect.Method.invokeNative(Native Method) 02-06 00:18:53.770: E/AndroidRuntime(28775): at java.lang.reflect.Method.invoke(Method.java:511) 02-06 00:18:53.770: E/AndroidRuntime(28775): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006) 02-06 00:18:53.770: E/AndroidRuntime(28775): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773) 02-06 00:18:53.770: E/AndroidRuntime(28775): at dalvik.system.NativeStart.main(Native Method) 02-06 00:18:53.770: E/AndroidRuntime(28775): Caused by: android.os.NetworkOnMainThreadException 02-06 00:18:53.770: E/AndroidRuntime(28775): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1118) 02-06 00:18:53.770: E/AndroidRuntime(28775): at java.net.InetAddress.lookupHostByName(InetAddress.java:385) 02-06 00:18:53.770: E/AndroidRuntime(28775): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236) 02-06 00:18:53.770: E/AndroidRuntime(28775): at java.net.InetAddress.getAllByName(InetAddress.java:214) 02-06 00:18:53.770: E/AndroidRuntime(28775): at libcore.net.http.HttpConnection.(HttpConnection.java:70) 02-06 00:18:53.770: E/AndroidRuntime(28775): at libcore.net.http.HttpConnection.(HttpConnection.java:50) 02-06 00:18:53.770: E/AndroidRuntime(28775): at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:340) 02-06 00:18:53.770: E/AndroidRuntime(28775): at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:87) 02-06 00:18:53.770: E/AndroidRuntime(28775): at libcore.net.http.HttpConnection.connect(HttpConnection.java:128) 02-06 00:18:53.770: E/AndroidRuntime(28775): at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:315) 02-06 00:18:53.770: E/AndroidRuntime(28775): at libcore.net.http.HttpEngine.connect(HttpEngine.java:310) 02-06 00:18:53.770: E/AndroidRuntime(28775): at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:289) 02-06 00:18:53.770: E/AndroidRuntime(28775): at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:239) 02-06 00:18:53.770: E/AndroidRuntime(28775): at libcore.net.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:80) 02-06 00:18:53.770: E/AndroidRuntime(28775): at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:408) 02-06 00:18:53.770: E/AndroidRuntime(28775): at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:393) 02-06 00:18:53.770: E/AndroidRuntime(28775): at org.jsoup.helper.HttpConnection.execute(HttpConnection.java:159) 02-06 00:18:53.770: E/AndroidRuntime(28775): at org.jsoup.helper.HttpConnection.get(HttpConnection.java:148) 02-06 00:18:53.770: E/AndroidRuntime(28775): at com.example.htmlparsingtutorial.MainActivity.onCreate(MainActivity.java:90) 02-06 00:18:53.770: E/AndroidRuntime(28775): at android.app.Activity.performCreate(Activity.java:5206) 02-06 00:18:53.770: E/AndroidRuntime(28775): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1083) 02-06 00:18:53.770: E/AndroidRuntime(28775): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2064) 02-06 00:18:53.770: E/AndroidRuntime(28775): ... 11 more
是的，如果您在主线程中运行网络代码，则抛出此exception。 解决方案是将您的任务作为AsyncTask运行。
顺便说一句。 请测试此代码，在PC上运行：
Document doc = Jsoup.connect("http://tvrehberi.hurriyet.com.tr/program-detay/308271/deli-deli-olma").get(); List saatItem = new ArrayList (); for( Element element : doc.select("div[class=content clear]")) { saatItem.add(element.text()); }