所以我一直试图弄清楚如何让jsoup在Android工作室中进行网页抓取。我试图让它加载它从其他网站,如谷歌图像拉出的图片。
当我执行jsoup.parse("[anything]")
时,它会运行,但不会加载任何内容,但如果我jsoup.connect("[anything]").get()
并添加try-catch
语句breaks
。
我已经按照了很多教程来看看我是否错误地加载了依赖项,但这不是问题。此时,我不确定为什么解析有效,但连接没有。
这是堆栈跟踪......
--- beginning of crash
06-06 20:52:40.220 2844-2844/com.[private].learnjsoup E/AndroidRuntime:FATAL EXCEPTION: main
Process: com.[private].learnjsoup, PID: 2844
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.[private].learnjsoup/com.[private].learnjsoup.MainActivity}: android.os.NetworkOnMainThreadException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1273)
at java.net.InetAddress.lookupHostByName(InetAddress.java:431)
at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
at java.net.InetAddress.getAllByName(InetAddress.java:215)
at com.android.okhttp.internal.Network$1.resolveInetAddresses(Network.java:29)
at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:188)
at com.android.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:157)
at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:100)
at com.android.okhttp.internal.http.HttpEngine.createNextConnection(HttpEngine.java:357)
at com.android.okhttp.internal.http.HttpEngine.nextConnection(HttpEngine.java:340)
at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:330)
at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:248)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:433)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:114)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:563)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:540)
at org.jsoup.helper.HttpConnection.execute(HttpConnection.java:227)
at org.jsoup.helper.HttpConnection.get(HttpConnection.java:216)
at com.shaynamehta.learnjsoup.MainActivity.onCreate(MainActivity.java:19)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
答案 0 :(得分:0)
我试图让它加载从其他网站上提取的图片(...)
以下是使用Jsoup加载图片的方法。
String imageUrl = "...";
Connection.Response response = Jsoup //
.connect(imageUrl) //
.ignoreContentType(true) // Needed for fetching image
.execute();
byte[] imageData = response.bodyAsBytes();