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无法从设备上的应用程序连接到服务器

分类: 技术问答 • 2022-04-06 09:52:30
问题描述：

我在设备上测试我的应用程序时遇到问题.
我已经成功地从我的设备在浏览器中打开了本地主机，但是当我输入我的 ip 以将我的应用程序与 Web 服务连接时，它没有工作.
我总是收到不幸的是，[我的应用程序名称] 已停止"消息.
谁知道这个问题，请帮助我.我真的需要帮助来解决这个问题.非常感谢

I have problem with testing my application on device.
I already successfully open the localhost in browser from my device, but when i enter my ip to connect my application with web service it didn't work.
I always get the "unfortunately, [my apps name] has stopped" message.
Anyone who knows about this problem, please help me. I really need help to solve this. thank you very much

logcat - 我从设备上的 USB 调试中得到它

logcat - i get it from usb debug on device

06-10 11:31:15.551: D/dalvikvm(14590): Late-enabling CheckJNI
06-10 11:31:15.809: D/TextLayoutCache(14590): Using debug level: 0 - Debug Enabled: 0
06-10 11:31:15.902: D/libEGL(14590): loaded /vendor/lib/egl/libEGL_POWERVR_SGX540_120.so
06-10 11:31:15.910: D/libEGL(14590): loaded /vendor/lib/egl/libGLESv1_CM_POWERVR_SGX540_120.so
06-10 11:31:15.910: D/libEGL(14590): loaded /vendor/lib/egl/libGLESv2_POWERVR_SGX540_120.so
06-10 11:31:16.160: D/OpenGLRenderer(14590): Enabling debug mode 0
06-10 11:31:19.770: D/OpenGLRenderer(14590): Flushing caches (mode 0)
06-10 11:31:22.309: D/OpenGLRenderer(14590): Flushing caches (mode 0)
06-10 11:31:30.848: D/TryLoginCheck(14590): Here
06-10 11:31:30.848: I/System.out(14590): UserNametes
06-10 11:31:30.848: I/System.out(14590): passwordTes12345*
06-10 11:31:30.848: D/Parameters(14590): username=tes&password=Tes12345*
06-10 11:31:30.863: D/AndroidRuntime(14590): Shutting down VM
06-10 11:31:30.863: W/dalvikvm(14590): threadid=1: thread exiting with uncaught exception (group=0x40bd31f8)
06-10 11:31:30.863: E/AndroidRuntime(14590): FATAL EXCEPTION: main
06-10 11:31:30.863: E/AndroidRuntime(14590): android.os.NetworkOnMainThreadException
06-10 11:31:30.863: E/AndroidRuntime(14590):    at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1099)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at libcore.io.IoBridge.connectErrno(IoBridge.java:127)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at libcore.io.IoBridge.connect(IoBridge.java:112)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at java.net.Socket.connect(Socket.java:842)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at libcore.net.http.HttpConnection.<init>(HttpConnection.java:77)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at libcore.net.http.HttpConnection.<init>(HttpConnection.java:50)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:351)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:86)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at libcore.net.http.HttpConnection.connect(HttpConnection.java:128)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:308)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at libcore.net.http.HttpEngine.connect(HttpEngine.java:303)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:282)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:232)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at libcore.net.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:80)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at libcore.net.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:188)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at com.karismaelearning.Login.tryLogin(Login.java:128)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at com.karismaelearning.Login$3.onClick(Login.java:73)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at android.view.View.performClick(View.java:3558)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at android.view.View$PerformClick.run(View.java:14157)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at android.os.Handler.handleCallback(Handler.java:605)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at android.os.Handler.dispatchMessage(Handler.java:92)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at android.os.Looper.loop(Looper.java:137)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at android.app.ActivityThread.main(ActivityThread.java:4514)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at java.lang.reflect.Method.invokeNative(Native Method)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at java.lang.reflect.Method.invoke(Method.java:511)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
06-10 11:31:30.863: E/AndroidRuntime(14590):    at dalvik.system.NativeStart.main(Native Method)
06-10 11:31:30.918: D/dalvikvm(14590): GC_CONCURRENT freed 237K, 6% free 6863K/7239K, paused 2ms+2ms

答

你得到 android.os.NetworkOnMainThreadException :

当应用程序试图在其主线程上执行网络操作时抛出的异常.

The exception that is thrown when an application attempts to perform a networking operation on its main thread.

这仅针对面向 Honeycomb SDK 或更高版本的应用程序抛出.允许面向早期 SDK 版本的应用在其主事件循环线程上进行联网，但强烈建议不要这样做.

This is only thrown for applications targeting the Honeycomb SDK or higher. Applications targeting earlier SDK versions are allowed to do networking on their main event loop threads, but it's heavily discouraged.

在 AsyncTask

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