Java android OkHttpClient请求错误

我正在尝试使用我的android应用程序在mysql数据库中存储一些数据。我正在使用okhttp3发送请求，但在此行中出现错误：

client.newCall(request).execute();

我在本地机器上和网上都试过了，但它给了我同样的错误，这里是代码

public class MainActivity extends AppCompatActivity {

    String token1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        System.out.println("MainActivity is :" + FirebaseInstanceId.getInstance().getToken());
        FirebaseMessaging.getInstance().subscribeToTopic("test");
        FirebaseInstanceId.getInstance().getToken();
        token1=FirebaseInstanceId.getInstance().getToken();
    }

    public void clicking(View view) {

        OkHttpClient client = new OkHttpClient();
        RequestBody body = new FormBody.Builder()
                .add("Token",token1)
                .build();

        okhttp3.Request request = new okhttp3.Request.Builder()
                .url("http://saleh923.byethost8.com/hii.html")
                .post(body)
                .build();

        try {
            client.newCall(request).execute();
        } catch (IOException e) {

            e.printStackTrace();
        }
    }
}

下面是日志：

 com.example.user.firebasenot E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.user.firebasenot, PID: 3280
    java.lang.IllegalStateException: Could not execute method for android:onClick
        at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:293)
        at android.view.View.performClick(View.java:5198)
        at android.view.View$PerformClick.run(View.java:21147)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        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$MethodAndArgsCaller.run(ZygoteInit.java:726)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
     Caused by: java.lang.reflect.InvocationTargetException
        at java.lang.reflect.Method.invoke(Native Method)
        at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
        at android.view.View.performClick(View.java:5198) 
        at android.view.View$PerformClick.run(View.java:21147) 
        at android.os.Handler.handleCallback(Handler.java:739) 
        at android.os.Handler.dispatchMessage(Handler.java:95) 
        at android.os.Looper.loop(Looper.java:148) 
        at android.app.ActivityThread.main(ActivityThread.java:5417) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$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 okhttp3.Dns$1.lookup(Dns.java:39)
        at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:172)
        at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.java:138)
        at okhttp3.internal.connection.RouteSelector.next(RouteSelector.java:80)
        at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:178)
        at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:129)
        at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:98)
        at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
        at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:109)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
        at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:124)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:170)
        at okhttp3.RealCall.execute(RealCall.java:60)
        at com.example.user.firebasenot.MainActivity.clicking(MainActivity.java:54)
        at java.lang.reflect.Method.invoke(Native Method) 
        at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288) 
        at android.view.View.performClick(View.java:5198) 
        at android.view.View$PerformClick.run(View.java:21147) 
        at android.os.Handler.handleCallback(Handler.java:739) 
        at android.os.Handler.dispatchMessage(Handler.java:95) 
        at android.os.Looper.loop(Looper.java:148) 
        at android.app.ActivityThread.main(ActivityThread.java:5417) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 

---

错误消息说明了这一切：

原因：android.os.NetworkOnMainThreadException

您不应该在主（又名UI）线程上发出网络请求。
您可以通过多种方式在不同的线程上发出此请求，以下是一种：

final OkHttpClient client = new OkHttpClient();
RequestBody body = new FormBody.Builder()
        .add("Token",token1)
        .build();

final okhttp3.Request request = new okhttp3.Request.Builder()
        .url("http://saleh923.byethost8.com/hii.html")
        .post(body)
        .build();

final Thread thread = new Thread(new Runnable() {
    @Override
    public void run() {
        try {
            client.newCall(request).execute();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
});

但是，

okhttp

使我们可以更轻松地使用：

---

以下是调试代码的方法： 你在日志中的第一个提示是

java.lang.IllegalStateException:无法执行的方法 安卓：onClick

告诉您onClick方法实现有问题，在本例中是

单击（视图）

。然后你继续寻找下一个提示，这是你在日志中的第二个提示

原因：android.os.NetworkOnMainThreadException

这当然发生在您指出的

单击（查看）

方法实现行中。它从主线程发出网络请求；哦！，安卓系统认为这是一件坏事

那么出路是什么呢？您可以使用以下任一替代方法：

备选方案1:View.post（可运行）或View.postDelayed（可运行，长）

备选方案2:Activity.runOnUiThread（可运行）

备选方案3：处理程序

备选方案4：异步任务

我已经演示了这些备选方案中的每一个，包括错误的方式，就像您在我的Github项目中展示的名为。请随意下载并使用它，看看哪个实现方案适合您的兴趣，并在您自己的项目中使用它

为了快速检查，我将实现您的

单击（查看）

如下所示：

public void clicking(View view) {
   new MakeNetworkRequestAsyncTask().execute();
}

private void makeNetworkRequest() {
    OkHttpClient client = new OkHttpClient();
        RequestBody body = new FormBody.Builder()
                .add("Token",token1)
                .build();

        okhttp3.Request request = new okhttp3.Request.Builder()
                .url("http://saleh923.byethost8.com/hii.html")
                .post(body)
                .build();

        try {
            client.newCall(request).execute();
        } catch (IOException e) {
            e.printStackTrace();
        }
}

private class MakeNetworkRequestAsyncTask extends AsyncTask<Void, Void, Void> {
   // The system calls this to perform work in a worker thread and
   // delivers it the parameters given to AsyncTask.execute()
   protected transient Void doInBackground(Void[] params) {
      makeNetworkRequest();
   }

   // The system calls this to perform work in the UI thread and
   // delivers the result from doInBackground() method defined above
   @Override
   protected void onPostExecute(Void result) {}
}

公共作废点击（查看）{
新建MakeNetworkRequestAsyncTask（）.execute（）；
}
私有void makeNetworkRequest（）{
OkHttpClient=新的OkHttpClient（）；
RequestBody=newformbody.Builder（）
.添加（“令牌”，令牌1）
.build（）；
okhttp3.Request-Request=新的okhttp3.Request.Builder（）
.url（“http://saleh923.byethost8.com/hii.html")
.职位（机构）
.build（）；
试一试{
client.newCall（request.execute（）；
}捕获（IOE异常）{
e、 printStackTrace（）；
}
}
私有类MakeNetworkRequestAsyncTask扩展了AsyncTask{
//系统调用它以在工作线程中执行工作，并
//将给定给AsyncTask.execute（）的参数传递给它
受保护的瞬态Void doInBackground（Void[]参数）{
makeNetworkRequest（）；
}
//系统调用它来执行UI线程中的工作，并
//从上面定义的doInBackground（）方法传递结果
@凌驾
受保护的void onPostExecute（void result）{}
}

---

希望有帮助

你应该投票并标出你认为正确的答案。这将使更多的人在StackOverflow这样的时候帮助你#SOBeginnerTips

public void clicking(View view) {
   new MakeNetworkRequestAsyncTask().execute();
}

private void makeNetworkRequest() {
    OkHttpClient client = new OkHttpClient();
        RequestBody body = new FormBody.Builder()
                .add("Token",token1)
                .build();

        okhttp3.Request request = new okhttp3.Request.Builder()
                .url("http://saleh923.byethost8.com/hii.html")
                .post(body)
                .build();

        try {
            client.newCall(request).execute();
        } catch (IOException e) {
            e.printStackTrace();
        }
}

private class MakeNetworkRequestAsyncTask extends AsyncTask<Void, Void, Void> {
   // The system calls this to perform work in a worker thread and
   // delivers it the parameters given to AsyncTask.execute()
   protected transient Void doInBackground(Void[] params) {
      makeNetworkRequest();
   }

   // The system calls this to perform work in the UI thread and
   // delivers the result from doInBackground() method defined above
   @Override
   protected void onPostExecute(Void result) {}
}