Likhanov's questions

有这样一种方法，它通过发出请求VKApi并接收id用户的头像

private fun getPhotoIdByUser(userId: String) {
    val fields = "crop_photo"
    val request = VKApi.users().get(VKParameters.from(VKApiConst.USER_ID, userId,
            VKApiConst.COUNT, 1, VKApiConst.FIELDS, fields))

    request.executeWithListener(object : VKRequest.VKRequestListener() {
        override fun onComplete(response: VKResponse?) {

            val id = response?.json?.getJSONArray("response")
                    ?.getJSONObject(0)?.getJSONObject("crop_photo")
                    ?.getJSONObject("photo")?.getString("id")

        }

        override fun onError(error: VKError?) {
            Log.e("tag", "error")
        }
    })
}

我知道哪一个id应该回来。但是如果方法什么都不返回，你如何比较实际结果和预期结果呢？是否可以使用该方法做一些事情以便对其进行测试？

假设有一个模型类

class Movie {
    String id;
    String title;
    int year;
    Production production;

    public String getId() {
        return id;
    }

    public String getTitle() {
        return title;
    }

    public int getYear() {
        return year;
    }

    public Production getProduction() {
        return production;
    }
};

使用gson会产生一个像这样的 json 字符串

movies: [
  {
    id: "771305050",
    title: "Straight Outta Compton",
    production: {
      director: "F. Gary Gray"
      screenplay: "Jonathan Herman"
    },
    year: 2015,
  },
  { 
    id: "771357161",
    title: "Mission: Impossible Rogue Nation",
    production: {
      director: "Christopher McQuarrie",
      screenplay: "Christopher McQuarrie"
    },
    year: 2015
  }
]

如您所见，模型类中字段的顺序不同：production在 json 字符串中，现在它早于year. 是否有可能在不放弃库的情况下以模型类中的方式进行排序？

接口为Retrofit

public interface MapApi {

    @Headers({"Content-Type: application/json", "Cache-Control: max-age=640000"})
    @POST("map/saveareas")
    Call<StandardResponse> saveAreas(@Body List<Area> areas);
}

Pojo类区域

public class Area extends RealmObject {

    @PrimaryKey
    @Expose
    private String id = UUID.randomUUID().toString();
    @Expose
    private String name;
    @Expose
    private String description;
    @Expose
    private String parentId;
    @Expose
    private int color;
    @Expose
    private Date date = new Date();
    @Expose
    private boolean favourite = false;


    public Area(){}
//Другой конструктор и геттеры, сеттеры
}

所以，我得到一个对象列表Realm并将这个列表传递给改造

List<Area> areas = mRealm
                    .where(Area.class)
                    .findAll();

if (areas != null) {
                try {
                    Call<StandardResponse> saveAreasResponseCall =
                            MyApplication.mMapApi.saveAreas(areas);

                    saveAreasResponseCall.enqueue(new Callback<StandardResponse>() {
                        @Override
                        public void onResponse(Call<StandardResponse> call, Response<StandardResponse> response) {

                            Log.d(MyApplication.TAG, CLASS + ": " + response.code());

                            if (response.code() == 200) {
                                StandardResponse standardResponse = response.body();

                            }
                        }

                        @Override
                        public void onFailure(Call<StandardResponse> call, Throwable t) {
                            Log.e(MyApplication.TAG, CLASS + ": " + t.getMessage());
                        }
                    });

                } catch (Exception e) {
                    Log.e(MyApplication.TAG, CLASS + ": " + e.getMessage());
                }
            }

应用程序冻结并黑屏，30 秒后挂起并出现错误

E/tag: MapsFragment: stack size 8MB

但是，如果我自己创建它List<Area> areas1，用其中的数据手动填充它Realm并将其传递给改造，那么一切正常。例如，

List<Area> areas1 = new ArrayList<>();
areas1.add(new Area("eb1737a1-9693-47d9-8390-5d02a249f5c4", "test", "test description", "", -10647809, new Date("Mon Feb 05 22:37:35 GMT+10:00 2018"), false));
areas1.add(new Area("7017c01a-cb6b-403f-956a-38eeedfca598", "tes", "", "eb1737a1-9693-47d9-8390-5d02a249f5c4", -5349889, new Date("Mon Feb 05 22:38:11 GMT+10:00 2018"), false));

如果我尝试areas1.addAll(areas)再次使用从 获取的列表中传递数据Realm，然后将新列表传递给Retrofit，那么一切都会再次挂起。

我创建一个这样的位图

mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.ic_event_place);

我用Matrix它来设置位图的位置和大小。

 mMatrix.setScale(1.5f, 1.5f);
 mMatrix.setTranslate(mStartX + (radius - paint.getStrokeWidth() / 2),
                mStartY - mBitmap.getHeight() / 1.5f);
 canvas.drawBitmap(mBitmap, mMatrix, mBitmapPaint);

我用来绘制位图的画笔

mBitmapPaint = new Paint();
mBitmapPaint.setAntiAlias(true);
mBitmapPaint.setFilterBitmap(true);
mBitmapPaint.setDither(true);

位图已绘制，可以正常工作mMatrix.setTranslate()，但mMatrix.setScale(1.5f, 1.5f)使用任何参数时根本不工作。

setScale(float sx, float sy, float px, float py)而且 postScale()也不工作

我学习Realm，我阅读文档。书面

要将 Dog 对象添加到 Realm，请使用 createObject 或 copyToRealm 方法

这两种方法的区别就不写了，我想知道。

有一个相当大的 Android 项目完全用 Java 编写。现在我对 Kotlin 很感兴趣，我想继续这个项目。我知道 Kotlin 可能像 Java 一样在编译时编译为字节码。

然而，有趣的是，在这种情况下你会遇到什么“陷阱”。例如，增加编译时间，可能会增加维护项目的复杂性等。

我在调用服务器期间使用这个库来制作动画。

也就是说，我创建了一个带有动画的xml文件

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <com.zl.reik.dilatingdotsprogressbar.DilatingDotsProgressBar
        android:id="@+id/progress"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:color="@color/button_background_stroke"
        android:radius="6dp"
        app:dd_animationDuration="500"
        app:dd_horizontalSpacing="8dp"
        app:dd_numDots="6"
        app:dd_scaleMultiplier="2" />

</RelativeLayout>

显示动画AlertDialog.Builder

AlertDialog.Builder builder = new AlertDialog.Builder(getContext());

                View view2 = inflater.inflate(R.layout.progress_animation, container, false);

                builder.setView(view2);

                DilatingDotsProgressBar dotsProgressBar = (DilatingDotsProgressBar)
                        view2.findViewById(R.id.progress);

                dotsProgressBar.showNow();

                mProgressDialog = builder.create();

                mProgressDialog.show();

一切似乎都很好，但动画的背景令人不快（在本例中为白色）

是否有可能以某种方式删除这个白色背景？或者有没有比使用动画更好的方法AlertDialog？

我不明白如何旋转文本。

有一个代码

  public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(new RotateText(this));
    }

    private class RotateText extends View {

        private Paint fontPaint;
        private String mText = "Rotate text";
        private int fontSize = 100;
        private float[] widths;

        public RotateText(Context context) {
            super(context);
            fontPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
            fontPaint.setTextSize(fontSize);
            fontPaint.setStyle(Paint.Style.STROKE);

            width = fontPaint.measureText(mText);

            widths = new float[mText.length()];
            fontPaint.getTextWidths(mText, widths);
        }

        @Override
        protected void onDraw(Canvas canvas) {
            super.onDraw(canvas);

            canvas.drawARGB(80, 102, 204, 255);

            canvas.translate(350, 550);

            canvas.drawText(mText, 0, 0, fontPaint);

        }
    }
}

如何使文本不断旋转，最好以给定的加速度。

我有以下任务

Activity 有一个 Copy 按钮，单击该按钮时，会将所有文件从应用程序目录复制到 SD 卡到输入字段中指定的目录。

我很明白有必要复制项目的所有文件。复制文件有以下方法

public void copyFile(File sourceFile, File destFile) throws IOException {
    if(!destFile.exists()) {
        destFile.createNewFile();
    }

    FileChannel source = null;
    FileChannel destination = null;

    try {
        source = new FileInputStream(sourceFile).getChannel();
        destination = new FileOutputStream(destFile).getChannel();
        destination.transferFrom(source, 0, source.size());
    }
    finally {
        if(source != null) {
            source.close();
        }
        if(destination != null) {
            destination.close();
        }
    }
}

有一种方法可以获取目录中的所有文件

public ArrayList<File> listFilesWithSubFolders(File dir) {
        ArrayList<File> files = new ArrayList<File>();
        for (File file : dir.listFiles()) {
            if (file.isDirectory())
                files.addAll(listFilesWithSubFolders(file));
            else
                files.add(file);
        }
        return files;
    }

但我不知道如何获取应用程序文件夹本身以便将其传递给listFilesWithSubFolders(File dir). 有一个方法getApplicationInfo().dataDir，但它返回一个字符串，我需要一个文件。有没有办法解决这个问题？或者还有比这更好的方法吗？

有以下代码

mSubmitButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (TextUtils.isEmpty(mAnswerEditText.getText())
                        || TextUtils.isEmpty(mEmailEditText.getText()))
                    Toast.makeText(getContext(),
                            "Заполните поля ответа и email", Toast.LENGTH_LONG).show();
                else if (!isValidEmail(mEmailEditText.getText())) {
                    Toast.makeText(getContext(),
                            "Укажите правильный email", Toast.LENGTH_LONG).show();
                } else {
                    String[] strings = {
                            mAnswerEditText.getText().toString(),
                            mEmailEditText.getText().toString(),
                            mAd.getEmail()};

                    new CreateAdTask().execute(strings);

                    Toast.makeText(getContext(),
                            "Сообщение отправлено!", Toast.LENGTH_LONG).show();
                    getActivity().finish();
                }
            }
        });  

private class CreateAdTask extends AsyncTask<String[], Void, Void> {

        @Override
        protected Void doInBackground(String[]... params) {
            ServerHelper.getInstance().sendAnswer(
                    params[0].toString(),
                    params[1].toString(),
                    params[2].toString());
            return null;
        }
    }

错误日志

08-24 09:08:11.029 14188-14259/com.likhanov.adservice E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #3
                                                                        Process: com.likhanov.adservice, PID: 14188
                                                                        java.lang.RuntimeException: An error occurred while executing doInBackground()
                                                                            at android.os.AsyncTask$3.done(AsyncTask.java:325)
                                                                            at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
                                                                            at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
                                                                            at java.util.concurrent.FutureTask.run(FutureTask.java:242)
                                                                            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)
                                                                            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
                                                                            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
                                                                            at java.lang.Thread.run(Thread.java:761)
                                                                         Caused by: java.lang.ArrayIndexOutOfBoundsException: length=1; index=1
                                                                            at com.likhanov.adservice.AdFragment$CreateAdTask.doInBackground(AdFragment.java:96)
                                                                            at com.likhanov.adservice.AdFragment$CreateAdTask.doInBackground(AdFragment.java:91)
                                                                            at android.os.AsyncTask$2.call(AsyncTask.java:305)
                                                                            at java.util.concurrent.FutureTask.run(FutureTask.java:237)
                                                                            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243) 
                                                                            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133) 
                                                                            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607) 
                                                                            at java.lang.Thread.run(Thread.java:761) 

第 96 行是 params[0].toString()。我无法弄清楚为什么此时我会溢出数组。显然有必要以不同的方式传递参数，如何做到这一点？

开始研究android出现这样的问题，方法调用不了onCreate()。创建测试活动TestActivity

package com.likha.criminalintent;

import android.os.Bundle;
import android.os.PersistableBundle;
import android.support.annotation.Nullable;
import android.support.v4.app.FragmentActivity;
import android.util.Log;

public class TestActivity extends FragmentActivity {

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState, @Nullable PersistableBundle persistentState) {
        Log.d("MyTag", "In TestActivity, onCreate");
        super.onCreate(savedInstanceState, persistentState);
        setContentView(R.layout.test);
    }
}

CrimeFragment从触摸处理程序中的片段调用活动onClick()

从列表中删除

package com.likha.criminalintent;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.TextView;
import android.widget.Toast;

import java.util.List;

/**
 * Created by likha on 04.07.2017.
 */

public class CrimeListFragment extends Fragment {

   /..../
    private class CrimeHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

        /....../

        @Override
        public void onClick(View v) {
            Log.d("MyTag", "In CrimeListFragment, onClick");
            /*Intent intent = CrimePagerActivity.newIntent(getActivity(),
                    mCrime.getId());*/
            startActivity(new Intent(getActivity(), TestActivity.class));
        }
    }

清单文件：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.likha.criminalintent">

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity
        android:name=".CrimePagerActivity">
    </activity>
    <activity android:name=".TestActivity"/>
    <activity android:name=".CrimeListActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN"/>
            <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>
    </activity>
</application>

记录所有方法调用，不调用方法。触摸处理程序上的活动打开，调用条目onClick()出现在日志中，但活动打开时只是空的，那里什么也没有，尽管应该有文本。

这是错误窗口中的内容：

07-06 10:25:26.685 17037-17037/? E/cutils-trace: Error opening trace file: Permission denied (13)
07-06 10:25:26.723 17037-17037/? E/memtrack: Couldn't load memtrack module (No such file or directory)
07-06 10:25:26.723 17037-17037/? E/android.os.Debug: failed to load memtrack module: -2
07-06 10:25:26.737 1621-1670/system_process E/InputDispatcher: channel '45fed53 com.likha.criminalintent/com.likha.criminalintent.CrimeListActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
07-06 10:25:26.761 17049-17054/? E/art: Failed sending reply to debugger: Broken pipe
07-06 10:25:28.880 17073-17073/? E/cutils-trace: Error opening trace file: Permission denied (13)
07-06 10:25:28.929 17073-17073/? E/memtrack: Couldn't load memtrack module (No such file or directory)
07-06 10:25:28.929 17073-17073/? E/android.os.Debug: failed to load memtrack module: -2
07-06 10:25:30.303 17120-17120/? E/cutils-trace: Error opening trace file: Permission denied (13)
07-06 10:25:30.358 17120-17120/? E/memtrack: Couldn't load memtrack module (No such file or directory)
07-06 10:25:30.358 17120-17120/? E/android.os.Debug: failed to load memtrack module: -2
07-06 10:25:32.980 17164-17164/? E/cutils-trace: Error opening trace file: Permission denied (13)
07-06 10:25:33.023 2032-2595/com.google.android.gms.persistent E/NetworkScheduler.SR: Invalid parameter app
07-06 10:25:33.023 2032-2595/com.google.android.gms.persistent E/NetworkScheduler.SR: Invalid package name : Perhaps you didn't include a PendingIntent in the extras?
07-06 10:25:33.044 2453-11151/com.google.android.gms E/Drive.UninstallOperation: Package still installed com.likha.criminalintent
07-06 10:25:33.068 17164-17164/? E/memtrack: Couldn't load memtrack module (No such file or directory)
07-06 10:25:33.068 17164-17164/? E/android.os.Debug: failed to load memtrack module: -2
07-06 10:25:33.152 2032-2595/com.google.android.gms.persistent E/NetworkScheduler.SR: Invalid parameter app
07-06 10:25:33.152 2032-2595/com.google.android.gms.persistent E/NetworkScheduler.SR: Invalid package name : Perhaps you didn't include a PendingIntent in the extras?
07-06 10:25:33.329 17201-17201/? E/cutils-trace: Error opening trace file: Permission denied (13)
07-06 10:25:33.384 17201-17201/? E/memtrack: Couldn't load memtrack module (No such file or directory)
07-06 10:25:33.384 17201-17201/? E/android.os.Debug: failed to load memtrack module: -2
07-06 10:25:33.451 1326-1326/? E/EGL_emulation: tid 1326: eglCreateSyncKHR(1669): error 0x3004 (EGL_BAD_ATTRIBUTE)
07-06 10:25:33.526 1732-1732/com.android.systemui E/ResourcesManager: failed to add asset path /data/app/com.likha.criminalintent-2/base.apk
07-06 10:25:33.526 1732-1732/com.android.systemui E/ResourcesManager: failed to add asset path /data/app/com.likha.criminalintent-2/base.apk
07-06 10:25:33.526 1732-1732/com.android.systemui E/ResourcesManager: failed to add asset path /data/app/com.likha.criminalintent-2/base.apk
07-06 10:25:33.806 1326-3157/? E/SurfaceFlinger: ro.sf.lcd_density must be defined as a build property

                                                 [ 07-06 10:25:33.809 17244:17244 D/         ]
                                                 HostConnection::get() New Host Connection established 0xaebade80, tid 17244

错误可能很小，但我不明白在哪里。谢谢你。

通常，我在尝试从 servlet 中的 mySql 数据库获取数据时遇到此错误。

@WebServlet(name = "PatientServlet", urlPatterns = "/patient")
 public class PatientServlet extends HttpServlet {

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

}

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    Session session = HibernateUtill.getSessionFactory().openSession();
    PatientDAOImpl patientDAO = new PatientDAOImpl();
    patientDAO.setSession(session);

    try {
        request.setAttribute("patients", patientDAO.findAll());
    } catch (Exception e) {
        e.printStackTrace();
    }

    request.getRequestDispatcher("WEB-INF/patient.jsp").forward(request, response);
}

}

我使用 maven，所有依赖项都得到满足。如果我尝试从常规类而不是 servlet 连接到数据库，并且只是将一些数据从数据库输出到控制台，一切正常。

org.hibernate.MappingException: An AnnotationConfiguration instance is required to use <mapping class="com.likhanov.model.dao.entities.Patient"/>
at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1597)
at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1552)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1531)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1505)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1425)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1411)
at com.likhanov.model.HibernateUtill.<clinit>(HibernateUtill.java:11)
at com.likhanov.controllers.PatientServlet.doGet(PatientServlet.java:25)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
SEVERE: Servlet.service() for servlet [PatientServlet] in context with path [] threw exception [Servlet execution threw an exception] with root cause
java.lang.ExceptionInInitializerError
at com.likhanov.model.HibernateUtill.<clinit>(HibernateUtill.java:15)
at com.likhanov.controllers.PatientServlet.doGet(PatientServlet.java:25)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)

存储库中的完整代码。

顺便说一句，该错误指向 HibernateUtill 类。我怀疑tomcat没有看到hibernate.cfg.xml文件。

war 文件打包了 maven 提取的所有可用库。我知道这可能是不必要的，因为 idea 本身没有对此发出任何警告（修复没有亮起），但我认为它至少可以这样工作。我也扔了配置。从休眠文件。

我只是启动并转到正确的地址。理论上，负责这个地址的servlet应该从数据库中拉取必要的数据，但它崩溃并指向HibernateUtill。如果有的话，我深表歉意，刚开始使用网络。