执行 Jsoup POST 请求时出现 IllegalStateException
IllegalStateException upon executing Jsoup POST request
我正在使用 Jsoup 发送 POST 请求，应用在执行该请求时崩溃。
我尝试使用 AsyncTask，同样的问题仍然存在。
这是我的主要代码 activity:
Fetcher fetcher = new Fetcher();
fetcher.doInBackground();
这是 AsynkTask 中的代码：
class Fetcher extends AsyncTask<Void, Void, Void> {
@Override
protected Void doInBackground(Void... voids) {
try {
//Connect to the website
Connection.Response response =
Jsoup.connect("https://parts-of-speech.info/tagger/tagger")
.userAgent("Mozilla/5.0")
.timeout(10 * 1000)
.method(Connection.Method.POST)
.data("text", "This is a text.")
.data("language", "en")
.followRedirects(true)
.ignoreContentType(true)
.execute();
Document document = response.parse();
System.out.println(document.text());
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}
这是预期的响应：
{
"taggedText": "This_NE is_VAFIN a_ART text_ADJD ._$. "
}
这是错误的完整堆栈跟踪：
10/24 14:05:09: Launching app
$ adb install-multiple -r -t -p com.jwanhsulaiman.lingu C:\Users\Lenovo\Desktop\Lingu\app\build\intermediates\split-apk\debug\slices\slice_2.apk
Split APKs installed in 1 s 624 ms
$ adb shell am start -n "com.jwanhsulaiman.lingu/com.jwanhsulaiman.lingu.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Client not ready yet..Waiting for process to come online
Waiting for process to come online
Connected to process 2586 on device sony-g8141-CB512G32W7
Capturing and displaying logcat messages from application. This behavior can be disabled in the "Logcat output" section of the "Debugger" settings page.
I/AssistStructure: Flattened final assist data: 2648 bytes, containing 1 windows, 10 views
E/SpannableStringBuilder: SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
I/chatty: uid=10082(com.jwanhsulaiman.lingu) identical 2 lines
E/SpannableStringBuilder: SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
E/SpannableStringBuilder: SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
D/NetworkSecurityConfig: No Network Security Config specified, using platform default
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.jwanhsulaiman.lingu, PID: 2586
java.lang.IllegalStateException: Could not execute method for android:onClick
at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:390)
at android.view.View.performClick(View.java:6612)
at android.view.View.performClickInternal(View.java:6581)
at android.view.View.access00(View.java:785)
at android.view.View$PerformClick.run(View.java:25904)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:280)
at android.app.ActivityThread.main(ActivityThread.java:6706)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:385)
at android.view.View.performClick(View.java:6612)
at android.view.View.performClickInternal(View.java:6581)
at android.view.View.access00(View.java:785)
at android.view.View$PerformClick.run(View.java:25904)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:280)
at android.app.ActivityThread.main(ActivityThread.java:6706)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1513)
at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:117)
at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:105)
at java.net.InetAddress.getAllByName(InetAddress.java:1154)
at com.android.okhttp.Dns.lookup(Dns.java:39)
at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:175)
at com.android.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:141)
at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:83)
at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:174)
at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:126)
at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:95)
at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:281)
at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:224)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:461)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:127)
at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.connect(DelegatingHttpsURLConnection.java:89)
at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:26)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:730)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:705)
at org.jsoup.helper.HttpConnection.execute(HttpConnection.java:295)
at com.jwanhsulaiman.lingu.Fetcher.doInBackground(Fetcher.java:31)
at com.jwanhsulaiman.lingu.MainActivity.buttonOnClick(MainActivity.java:62)
at java.lang.reflect.Method.invoke(Native Method)
at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:385)
at android.view.View.performClick(View.java:6612)
at android.view.View.performClickInternal(View.java:6581)
at android.view.View.access00(View.java:785)
at android.view.View$PerformClick.run(View.java:25904)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:280)
at android.app.ActivityThread.main(ActivityThread.java:6706)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
I/Process: Sending signal. PID: 2586 SIG: 9
Application terminated.
可能是什么问题？
我无法从评论中选择答案，所以我会 post 在这里回答，感谢@Kishan Maurya 指出 AsyncTask 是必须的，感谢@Andy 指导我通过调用 execute() 而不是 doInBackground
来正确调用 AsyncTask
这是正确调用 AsyncTask 的方法：
AsyncTask post = new AsyncTask();
post.execute();
AsyncTask 的代码没问题。
我正在使用 Jsoup 发送 POST 请求，应用在执行该请求时崩溃。
我尝试使用 AsyncTask，同样的问题仍然存在。
这是我的主要代码 activity:
Fetcher fetcher = new Fetcher();
fetcher.doInBackground();
这是 AsynkTask 中的代码：
class Fetcher extends AsyncTask<Void, Void, Void> {
@Override
protected Void doInBackground(Void... voids) {
try {
//Connect to the website
Connection.Response response =
Jsoup.connect("https://parts-of-speech.info/tagger/tagger")
.userAgent("Mozilla/5.0")
.timeout(10 * 1000)
.method(Connection.Method.POST)
.data("text", "This is a text.")
.data("language", "en")
.followRedirects(true)
.ignoreContentType(true)
.execute();
Document document = response.parse();
System.out.println(document.text());
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}
这是预期的响应：
{
"taggedText": "This_NE is_VAFIN a_ART text_ADJD ._$. "
}
这是错误的完整堆栈跟踪：
10/24 14:05:09: Launching app
$ adb install-multiple -r -t -p com.jwanhsulaiman.lingu C:\Users\Lenovo\Desktop\Lingu\app\build\intermediates\split-apk\debug\slices\slice_2.apk
Split APKs installed in 1 s 624 ms
$ adb shell am start -n "com.jwanhsulaiman.lingu/com.jwanhsulaiman.lingu.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Client not ready yet..Waiting for process to come online
Waiting for process to come online
Connected to process 2586 on device sony-g8141-CB512G32W7
Capturing and displaying logcat messages from application. This behavior can be disabled in the "Logcat output" section of the "Debugger" settings page.
I/AssistStructure: Flattened final assist data: 2648 bytes, containing 1 windows, 10 views
E/SpannableStringBuilder: SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
I/chatty: uid=10082(com.jwanhsulaiman.lingu) identical 2 lines
E/SpannableStringBuilder: SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
E/SpannableStringBuilder: SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
D/NetworkSecurityConfig: No Network Security Config specified, using platform default
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.jwanhsulaiman.lingu, PID: 2586
java.lang.IllegalStateException: Could not execute method for android:onClick
at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:390)
at android.view.View.performClick(View.java:6612)
at android.view.View.performClickInternal(View.java:6581)
at android.view.View.access00(View.java:785)
at android.view.View$PerformClick.run(View.java:25904)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:280)
at android.app.ActivityThread.main(ActivityThread.java:6706)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:385)
at android.view.View.performClick(View.java:6612)
at android.view.View.performClickInternal(View.java:6581)
at android.view.View.access00(View.java:785)
at android.view.View$PerformClick.run(View.java:25904)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:280)
at android.app.ActivityThread.main(ActivityThread.java:6706)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1513)
at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:117)
at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:105)
at java.net.InetAddress.getAllByName(InetAddress.java:1154)
at com.android.okhttp.Dns.lookup(Dns.java:39)
at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:175)
at com.android.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:141)
at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:83)
at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:174)
at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:126)
at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:95)
at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:281)
at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:224)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:461)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:127)
at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.connect(DelegatingHttpsURLConnection.java:89)
at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:26)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:730)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:705)
at org.jsoup.helper.HttpConnection.execute(HttpConnection.java:295)
at com.jwanhsulaiman.lingu.Fetcher.doInBackground(Fetcher.java:31)
at com.jwanhsulaiman.lingu.MainActivity.buttonOnClick(MainActivity.java:62)
at java.lang.reflect.Method.invoke(Native Method)
at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:385)
at android.view.View.performClick(View.java:6612)
at android.view.View.performClickInternal(View.java:6581)
at android.view.View.access00(View.java:785)
at android.view.View$PerformClick.run(View.java:25904)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:280)
at android.app.ActivityThread.main(ActivityThread.java:6706)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
I/Process: Sending signal. PID: 2586 SIG: 9
Application terminated.
可能是什么问题？
我无法从评论中选择答案，所以我会 post 在这里回答，感谢@Kishan Maurya 指出 AsyncTask 是必须的，感谢@Andy 指导我通过调用 execute() 而不是 doInBackground
这是正确调用 AsyncTask 的方法：
AsyncTask post = new AsyncTask();
post.execute();
AsyncTask 的代码没问题。