zookeeper-Unable to read HiveServer2 uri from ZooKeeper—

Unable to read HiveServer2 uri from ZooKeeper 1C: Exception in thread "main" java.sql.SQLException: org.apache.hive.jdbc.ZooKeeperHiveClientException: Unable to read HiveServer2 uri from ZooKeeper
at org.apache.hive.jdbc.HiveConnection.(HiveConnection.java:127)
at org.apache.hive.jdbc.HiveDriver.connect(HiveDriver.java:105)
at java.sql.DriverManager.getConnection(DriverManager.java:664)
at java.sql.DriverManager.getConnection(DriverManager.java:247)
at JDBCExample.main(JDBCExample.java:142)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)
Caused by: org.apache.hive.jdbc.ZooKeeperHiveClientException: Unable to read HiveServer2 uri from ZooKeeper
at org.apache.hive.jdbc.ZooKeeperHiveClientHelper.getNextServerUriFromZooKeeper(ZooKeeperHiveClientHelper.java:109)
at org.apache.hive.jdbc.Utils.resolveAuthorityUsingZooKeeper(Utils.java:492)
at org.apache.hive.jdbc.Utils.resolveAuthority(Utils.java:464)
at org.apache.hive.jdbc.Utils.parseURL(Utils.java:371)
at org.apache.hive.jdbc.HiveConnection.(HiveConnection.java:125)
... 9 more
Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hiveserver2
at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:2231)
at org.apache.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:214)
at org.apache.curator.framework.imps.GetChildrenBuilderImpl$3.call(GetChildrenBuilderImpl.java:203)
at org.apache.curator.RetryLoop.callWithRetry(RetryLoop.java:107)
at org.apache.curator.framework.imps.GetChildrenBuilderImpl.pathInForeground(GetChildrenBuilderImpl.java:199)
at org.apache.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:191)
at org.apache.curator.framework.imps.GetChildrenBuilderImpl.forPath(GetChildrenBuilderImpl.java:38)
at org.apache.hive.jdbc.ZooKeeperHiveClientHelper.getNextServerUriFromZooKeeper(ZooKeeperHiveClientHelper.java:91)
... 13 more; 发布于：2016.03.18 02:23

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: liuyoutan

声望： 8

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PHP上层接口的封装。别人底层接口做的是单一的增删改。我需要调用多个不同服务器上的接口来处理我需要的数据。进行更新到相应的接口里面。但是如果有的数据更改不成功了。需要事务的回滚。现在我知道的是同一个数据库里面的话，操作数据库的事务是可以实现的。但是不同的服务器不同的数据库，我需要事务处理的话。需要怎么做。我百度了分布式事务。但是没看懂。百度说的是JAVA的。我写PHP的跟他不一样。求大神指点

发布于：2016.12.17 14:57

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-1

: mianbaohebg

声望： 7

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nested exception is java.lang.UnsupportedOperationException: This converter does not support this method at org.springframework.integration.endpoint.MethodInvokingMessageSource.doReceive(MethodInvokingMessageSource.java:115) at org.springframework.integration.endpoint.AbstractMessageSource.receive(AbstractMessageSource.java:167) at org.springframework.integration.endpoint.SourcePollingChannelAdapter.receiveMessage(SourcePollingChannelAdapter.java:250) at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:359) at org.springframework.integration.endpoint.AbstractPollingEndpoint.pollForMessage(AbstractPollingEndpoint.java:328) at org.springframework.integration.endpoint.AbstractPollingEndpoint.lambda$null$1(AbstractPollingEndpoint.java:275) at org.springframework.integration.util.ErrorHandlingTaskExecutor.lambda$execute$0(ErrorHandlingTaskExecutor.java:57) at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50) at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:55) at org.springframework.integration.endpoint.AbstractPollingEndpoint.lambda$createPoller$2(AbstractPollingEndpoint.java:272) at org.springframework.cloud.sleuth.instrument.async.TraceRunnable.run(TraceRunnable.java:67) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:93) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.UnsupportedOperationException: This converter does not support this method at org.springframework.integration.support.converter.DefaultDatatypeChannelMessageConverter.toMessage(DefaultDatatypeChannelMessageConverter.java:85) at org.springframework.messaging.converter.CompositeMessageConverter.toMessage(CompositeMessageConverter.java:83) at org.springframework.cloud.function.context.catalog.BeanFactoryAwareFunctionRegistry$FunctionInvocationWrapper.lambda$convertOutputValueIfNecessary$2(BeanFactoryAwareFunctionRegistry.java:620) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.ArrayList$ArrayListSpliterator.tryAdvance(ArrayList.java:1359) at java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:126) at java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:499) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:486) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472) at java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:152) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:464) at org.springframework.cloud.function.context.catalog.BeanFactoryAwareFunctionRegistry$FunctionInvocationWrapper.convertOutputValueIfNecessary(BeanFactoryAwareFunctionRegistry.java:626) at org.springframework.cloud.function.context.catalog.BeanFactoryAwareFunctionRegistry$FunctionInvocationWrapper.doApply(BeanFactoryAwareFunctionRegistry.java:569) at org.springframework.cloud.function.context.catalog.BeanFactoryAwareFunctionRegistry$FunctionInvocationWrapper.get(BeanFactoryAwareFunctionRegistry.java:474) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:282) at org.springframework.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:266) at org.springframework.integration.endpoint.MethodInvokingMessageSource.doReceive(MethodInvokingMessageSource.java:112) ... 19 moreyi ```

aria2的下载过程中出现的问题: ![图片说明](https://img-ask.csdn.net/upload/202001/25/1579953732_414237.png) 如上，都下载了三分之二了，但是出现了这个问题，再之后我重新下载都是0%了，这个文件是百度云里的一个压缩包，请问我要怎么解决呢？链接里面是这样的内容 {"error_code":31326,"error_msg":"user is not authorized, hitcode:109","error_info":"","request_id":576012996596119898} 日志文件里是以下错误 2020-01-25 19:21:54.674205 [ERROR] [AbstractCommand.cc:351] CUID#46 - Download aborted. URI=https://pcs.baidu.com/rest/2.0/pcs/file?method=download&app_id=250528&path=%2F%E6%88%91%E7%9A%84%E8%B5%84%E6%BA%90%2FAdode%202020%20Win%20SP%E7%8B%AC%E7%AB%8B%E8%BD%AF%E4%BB%B6%E7%89%88%2FAdobe_Premiere_Pro_2020_14.0.0.572_SP_20191104.rar Exception: [AbstractCommand.cc:351] errorCode=22 URI=https://qdall01.baidupcs.com/file/f95a0d1622194300c97e7bc5eab1c517?bkt=en-26dcfdb4e5ee1a49eaf26265901af17c7cb1a8d473b7b2d0f89e135eb3b16b6cd6f92cd7a24beab5&fid=2319825596-250528-146821423475030&time=1579951314&sign=FDTAXGERLQlBHSKfWa-DCb740ccc5511e5e8fedcff06b081203-rFw%2BC6T4CpDgPr9iQzMzPJVhIg8%3D&to=92&size=1746725415&sta_dx=1746725415&sta_cs=15995&sta_ft=rar&sta_ct=5&sta_mt=1&fm2=MH%2CYangquan%2CAnywhere%2C%2Chebei%2Ccnc&ctime=1572880951&mtime=1579814977&resv0=-1&resv1=0&resv2=rlim&resv3=5&resv4=1746725415&vuk=2319825596&iv=-2&htype=&randtype=&newver=1&newfm=1&secfm=1&flow_ver=3&pkey=en-c2a2fca1773dfa1364bc3730768be1bcb4cf5bef3ca0d927cbb5764460f95e026aacd80c89972ca5&sl=80740430&expires=8h&rt=pr&r=256240782&mlogid=575341430521813490&vbdid=-&fin=Adobe_Premiere_Pro_2020_14.0.0.572_SP_20191104.rar&fn=Adobe_Premiere_Pro_2020_14.0.0.572_SP_20191104.rar&rtype=1&dp-logid=575341430521813490&dp-callid=0.1.1&hps=1&tsl=15&csl=78&fsl=-1&csign=JtHNlwtNujNMslqmqqjzpnVG2os%3D&so=0&ut=8&uter=4&serv=0&uc=1549241048&ti=39965399e74cce840cd661163e109ade9588392c4c4ffa4f&reqlabel=250528_d_67e5f81d750fb4c6056140b161259bf8_-1_b0231fc6c5c41d1af6d537905b85ad8f&by=themis -> [HttpSkipResponseCommand.cc:240] errorCode=22 The response status is not successful. status=403

阿里云+nginx+ssl+https配置后，网页依旧无法显示，请大神指教: 阿里云+nginx+ssl配置后，网页依旧无法显示，请大神指教域名已经解析 ![图片说明](https://img-ask.csdn.net/upload/202002/09/1581225059_616698.png) 服务器相关端口已打开 ![图片说明](https://img-ask.csdn.net/upload/202002/09/1581231238_906425.png) 系统是unbuntu16，nginx版本为1.15，已有ssl模块 ![图片说明](https://img-ask.csdn.net/upload/202002/09/1581225248_962076.png) ssl证书有上传至服务器 ![图片说明](https://img-ask.csdn.net/upload/202002/09/1581225321_579997.png) nginx的配置文件nginx.conf内容如下 ``` #user nobody; worker_processes 1; #error_log logs/error.log; #error_log logs/error.log notice; #error_log logs/error.log info; #pid logs/nginx.pid; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; #log_format main '$remote_addr - $remote_user [$time_local] "$request" ' # '$status $body_bytes_sent "$http_referer" ' # '"$http_user_agent" "$http_x_forwarded_for"'; #access_log logs/access.log main; sendfile on; #tcp_nopush on; #keepalive_timeout 0; keepalive_timeout 65; #gzip on; # server { # listen 80; # server_name localhost; # #charset koi8-r; # #access_log logs/host.access.log main; # location / { # root html; # index index.html index.htm; # } # #error_page 404 /404.html; # # redirect server error pages to the static page /50x.html # # # error_page 500 502 503 504 /50x.html; # location = /50x.html { # root html; # } # # proxy the PHP scripts to Apache listening on 127.0.0.1:80 # # # #location ~ \.php$ { # # proxy_pass http://127.0.0.1; # #} # # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000 # # # #location ~ \.php$ { # # root html; # # fastcgi_pass 127.0.0.1:9000; # # fastcgi_index index.php; # # fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name; # # include fastcgi_params; # #} # # deny access to .htaccess files, if Apache's document root # # concurs with nginx's one # # # #location ~ /\.ht { # # deny all; # #} # } # another virtual host using mix of IP-, name-, and port-based configuration # #server { # listen 8000; # listen somename:8080; # server_name somename alias another.alias; # location / { # root html; # index index.html index.htm; # } #} # HTTPS server # server { listen 443 ssl; server_name www.faceanalyze.club faceanalyze.club; ssl_certificate /usr/local/nginx/cert/cert.pem; ssl_certificate_key /usr/local/nginx/cert/cert.key; # ssl_session_cache shared:SSL:1m; ssl_session_timeout 5m; ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE:ECDH:AES:HIGH:!NULL:!aNULL:!MD5:!ADH:!RC4;; ssl_protocols TLSv1 TLSv1.1 TLSv1.2; ssl_prefer_server_ciphers on; location / { root html; index index.html index.htm; } } server { listen 80; server_name www.faceanalyze.club faceanalyze.club; return 301 https://$server_name$request_uri; } } ``` nginx有重新加载配置，端口使用情况如下 ![图片说明](https://img-ask.csdn.net/upload/202002/09/1581225719_742816.png) 用浏览器查看时，无法显示 ![图片说明](https://img-ask.csdn.net/upload/202002/09/1581225832_412617.png) 请大神求解！谢谢

【小白求助】安卓opencv用分类器对人脸进行识别的一些问题: 小白入门，最近在看opencv的人脸识别（分类）然后按照网上的代码，学习了之后，自己写了一段，发现运行的时候会卡很久，甚至直接退出，并且越用越卡。我想实现的是对一张图片进行读入，然后加载多个分类器对图片内容进行识别，从而达到分类的目的。我那个问题困扰了我一天，想来求助大神我加载人脸识别的模型没问题，但是同时加载两个模型，比如说人脸和上身，就会卡死。代码分3个部分，分别是MainActivity.java , execDetect.java , Detector.java 以下是MainActivity.java ``` package com.RinGo.IMGfenlei; import android.content.Context; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.net.Uri; import android.os.Bundle; import android.os.Environment; import android.provider.MediaStore; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.ImageButton; import android.widget.TextView; import android.widget.Toast; import androidx.appcompat.app.AppCompatActivity; import org.opencv.android.Utils; import org.opencv.core.Mat; import org.opencv.core.MatOfRect; import org.opencv.core.Rect; import org.opencv.core.Scalar; import org.opencv.imgproc.Imgproc; import org.opencv.objdetect.CascadeClassifier; public class MainActivity extends AppCompatActivity { private Detector frontfaceDetector; private Detector smileDetector; private static String CAMERAIMAGENAME = "image.jpg"; private ImageButton imageButton; private ImageButton imageButton2; private TextView textView; private Bitmap bitmap; private Bitmap rectBitmap; private Bitmap resizeBitmap; private Toast toast; private Button addFile; private Button startDetect; private Button check; private execDetect toDetcet; private String show; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); textView = (TextView) findViewById(R.id.tv_face); // imageButton = (ImageButton) findViewById(R.id.iv_face); //imageButton.setGravity(Gravity.CENTER_HORIZONTAL | Gravity.CENTER_VERTICAL); // imageButton2 = (ImageButton) findViewById(R.id.iv_face2); // imageButton2.setGravity(Gravity.CENTER_HORIZONTAL | Gravity.CENTER_VERTICAL); toDetcet=new execDetect(); addFile=(Button)findViewById(R.id.addPic); startDetect=(Button)findViewById(R.id.startDetect); check=(Button)findViewById(R.id.check); startDetect.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // startDetect.setClickable(false); textView.setText("正在检测"); // detect(); Thread d =new Thread(new Runnable() { @Override public void run() { toDetcet.initExecDetect(MainActivity.this,bitmap); // Toast.makeText(MainActivity.this, "initialize succeed", Toast.LENGTH_SHORT).show(); show= toDetcet.startDetect(); // Toast.makeText(MainActivity.this, " succeed", Toast.LENGTH_SHORT).show(); } }); d.run(); textView.setText(show); // startDetect.setClickable(true); } }); check.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // startDetect.setClickable(false); textView.setText(toDetcet.getReturntoMain()); // startDetect.setClickable(true); } }); addFile.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // 添加照片 // 打开本地相册 Intent intent1 = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI); startActivityForResult(intent1, 101); //startActivity(intent1); } }); String strLibraryName = "opencv_java3"; // 不需要添加前缀 libopencv_java3 { try { Log.e("loadLibrary", strLibraryName); System.loadLibrary(strLibraryName); //System.loadLibrary(Core.NATIVE_LIBRARY_NAME); // couldn't find "libopencv_java320.so" } catch (UnsatisfiedLinkError e) { Log.e("loadLibrary", "Native code library failed to load.\n" + e); } catch (Exception e) { Log.e("loadLibrary", "Exception: " + e); } } // frontfaceDetector = new Detector(this, R.raw.haarcascade_frontalface_alt, 6, 0.2F, 0.2F, new Scalar(255, 0, 0, 255)); } /** * 点击添加照片事件 * * @param v */ public void onClick(View v) { int bt_id = v.getId(); switch (bt_id) { /* case R.id.takePhoto: // 拍照 // 打开本地相机 Intent intent2 = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); Uri imageUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(), CAMERAIMAGENAME)); intent2.putExtra(MediaStore.EXTRA_OUTPUT, imageUri); startActivityForResult(intent2, 102); break; */ case R.id.back: this.finish(); break; default: break; } } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); // 加判断不选择照片或者不拍照时不闪退 //Log.e("data", String.valueOf(data)); //if (data == null) //return; bitmap = null; switch (requestCode) { // 选择图片库的图片 case 101: if (resultCode == RESULT_OK) { try { Uri uri = data.getData(); bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), uri); } catch (Exception e) { e.printStackTrace(); } } break; // 表示调用本地照相机拍照 case 102: if (resultCode == RESULT_OK) { //Bundle bundle = data.getExtras(); //bm = (Bitmap) bundle.get("data"); bitmap = BitmapFactory.decodeFile(Environment.getExternalStorageDirectory() + "/" + CAMERAIMAGENAME); } break; default: break; } Log.e("bitmap", String.valueOf(bitmap)); if (bitmap == null) { toast = Toast.makeText(MainActivity.this, "未选择图像", Toast.LENGTH_SHORT); toast.show(); return; } // 识别图片并画框 /* Thread detect=new Thread(new Runnable() { @Override public void run() { } }); detect.run(); */ // 将照片剪裁 bitmap将被释放重新赋值 //int ibWidth = imageButton.getWidth(); // int ibHeight = imageButton.getHeight(); //resizeBitmap = imageButton.resizeBitmap(bitmap, ibWidth, ibHeight); //imageButton.setBitmap(resizeBitmap); //imageButton2.setBitmap(rectBitmap); } private void detect() { MainActivity.this.runOnUiThread(new Runnable() { @Override public void run() { toDetcet.initExecDetect(MainActivity.this,bitmap); // Toast.makeText(MainActivity.this, "initialize succeed", Toast.LENGTH_SHORT).show(); String show= toDetcet.startDetect(); // Toast.makeText(MainActivity.this, " succeed", Toast.LENGTH_SHORT).show(); textView.setText(show); } }); //textView.setText(toDetcet.getReturntoMain()); } } ``` 以下是activity_main.xml ``` <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <TextView android:id="@+id/tv_face" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="16dp" android:text="未检测到人脸" android:textColor="@color/colorAccent" app:layout_constraintBottom_toTopOf="@+id/ll1" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" /> <LinearLayout android:id="@+id/ll1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent"> <com.qmuiteam.qmui.widget.roundwidget.QMUIRoundButton android:id="@+id/addPic" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="5dp" android:layout_weight="1" android:onClick="onClick" android:text=" 选择图片(CV) " android:textSize="16sp" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" /> <com.qmuiteam.qmui.widget.roundwidget.QMUIRoundButton android:id="@+id/startDetect" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="5dp" android:layout_weight="1" android:onClick="onClick" android:text=" 开始识别 " android:textSize="16sp" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" /> <com.qmuiteam.qmui.widget.roundwidget.QMUIRoundButton android:id="@+id/check" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="5dp" android:layout_weight="1" android:onClick="onClick" android:text=" 结果 " android:textSize="16sp" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" /> <com.qmuiteam.qmui.widget.roundwidget.QMUIRoundButton android:id="@+id/back" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="0dp" android:layout_weight="1" android:onClick="onClick" android:text=" 返回 " android:textSize="16sp" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" /> </LinearLayout> </LinearLayout> ``` 以下是execDetect.java ``` package com.RinGo.IMGfenlei; import android.content.Context; import android.graphics.Bitmap; import android.util.Log; import org.opencv.android.Utils; import org.opencv.core.Mat; import org.opencv.core.MatOfRect; import org.opencv.core.Rect; import org.opencv.core.Scalar; import org.opencv.imgproc.Imgproc; import org.opencv.objdetect.CascadeClassifier; import com.RinGo.IMGfenlei.R; import com.RinGo.IMGfenlei.Detector; import java.io.File; import java.io.FileOutputStream; import java.io.InputStream; public class execDetect { private Detector frontfaceDetector; private Detector smilefaceDetector; private Detector[] detectors=new Detector[10]; private Detector detector; private Bitmap bitmap; private Bitmap rectBitmap; private String returntoMain=""; private String[] detectorNames=new String[10]; private CascadeClassifier mFrontalFaceClassifier = null; //正脸级联分类器 private CascadeClassifier mProfileFaceClassifier = null; //侧脸级联分类器 private int smilefacenum=0; private Context mcontext; private int[] cascades=new int[10]; public void initExecDetect(Context _context,Bitmap _bitmap) { bitmap=_bitmap; mcontext=_context; cascades[0]=R.raw.haarcascade_frontalface_alt; detectors[0] = new Detector(_context,R.raw.haarcascade_frontalface_alt, 1, 0.2F, 0.2F, new Scalar(255, 0, 0, 255)); detectorNames[0]="正面人脸"; cascades[1]=R.raw.lbpcascade_frontalface; detectors[1] = new Detector(_context,R.raw.lbpcascade_frontalface, 1, 0.2F, 0.2F, new Scalar(255, 0, 0, 255)); detectorNames[1]="正面人脸2"; } public String startDetect() { // bitmapToMat Mat toMat = new Mat(); Utils.bitmapToMat(bitmap, toMat); // Mat copyMat = new Mat(); // toMat.copyTo(copyMat); // 复制 // togray Mat gray = new Mat(); MatOfRect mRect = new MatOfRect(); Imgproc.cvtColor(toMat, gray, Imgproc.COLOR_RGBA2GRAY); for (int id = 0; id < detectors.length; id++) { //detector = new Detector(mcontext,cascades[id], 3, 0.1F, 0.1F, new Scalar(255, 0, 0, 255)); try { int num = 0; mRect=new MatOfRect(); Rect[] object = detectors[id].detectObjectImage( gray, mRect); Log.e("objectLength", object.length + ""); num=object.length; /* for (Rect rect : object) { num++; } */ returntoMain =returntoMain+ String.format("检测到%1$d个" + detectorNames[id], num) + "\n"; } catch (Exception e) { e.printStackTrace(); } //textView.setText(String.format("检测到%1$d个人脸", facenum)); //Utils.matToBitmap(toMat, bitmap); } return returntoMain; } public String getReturntoMain() { return returntoMain; } } ``` 以下是Detector.java,定义了我的级联分类器的设置 ``` package com.RinGo.IMGfenlei; import android.content.Context; import org.opencv.core.Mat; import org.opencv.core.MatOfRect; import org.opencv.core.Rect; import org.opencv.core.Scalar; import org.opencv.core.Size; import org.opencv.objdetect.CascadeClassifier; import org.opencv.objdetect.Objdetect; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; /** * Created by think-hxr on 17-10-12. */ public class Detector { private CascadeClassifier mCascadeClassifier; private int mMinNeighbors; private float mRelativeObjectWidth; private float mRelativeObjectHeight; private Scalar mRectColor; /** * 构造方法 * * @param context 上下文 * @param id 级联分类器ID * @param minNeighbors 连续几帧确认目标 * @param relativeObjectWidth 最小宽度屏占比 * @param relativeObjectHeight 最小高度屏占比 * @param rectColor 画笔颜色 */ public Detector(Context context, int id, int minNeighbors, float relativeObjectWidth, float relativeObjectHeight, Scalar rectColor) { context = context.getApplicationContext(); mCascadeClassifier = createDetector(context, id); mMinNeighbors = minNeighbors; mRelativeObjectWidth = relativeObjectWidth; mRelativeObjectHeight = relativeObjectHeight; mRectColor = rectColor; } /** * 创建检测器 * * @param context 上下文 * @param id 级联分类器ID * @return 检测器 */ private CascadeClassifier createDetector(Context context, int id) { CascadeClassifier javaDetector; InputStream is = null; FileOutputStream os = null; try { is = context.getResources().openRawResource(id); File cascadeDir = context.getDir("cascade", Context.MODE_PRIVATE); File cascadeFile = new File(cascadeDir, id + ".xml"); os = new FileOutputStream(cascadeFile); byte[] buffer = new byte[4096]; int bytesRead; while ((bytesRead = is.read(buffer)) != -1) { os.write(buffer, 0, bytesRead); } javaDetector = new CascadeClassifier(cascadeFile.getAbsolutePath()); //javaDetector=new CascadeClassifier(); // javaDetector.load(cascadeFile.getAbsolutePath()); if (javaDetector.empty()) { javaDetector = null; } boolean delete = cascadeDir.delete(); return javaDetector; } catch (IOException e) { e.printStackTrace(); return null; } finally { try { if (null != is) { is.close(); } if (null != os) { os.close(); } } catch (IOException e) { e.printStackTrace(); } } } /** * 目标检测视频 * * @param gray 灰度图像 * @param object 识别结果的容器 * @return 检测到的目标位置集合 */ public Rect[] detectObject(Mat gray, MatOfRect object) { // 使用Java人脸检测 mCascadeClassifier.detectMultiScale( gray, // 要检查的灰度图像 object, // 检测到的人脸 1.1, // 表示在前后两次相继的扫描中，搜索窗口的比例系数。默认为1.1即每次搜索窗口依次扩大10%; mMinNeighbors, // 默认是3 控制误检测，表示默认几次重叠检测到人脸，才认为人脸存在 Objdetect.CASCADE_SCALE_IMAGE, getSize(gray, mRelativeObjectWidth, mRelativeObjectHeight), // 目标最小可能的大小 gray.size()); // 目标最大可能的大小 return object.toArray(); } /** * 目标检测图片 * * @param gray 灰度图像 * @param object 识别结果的容器 * @return */ public Rect[] detectObjectImage(Mat gray, MatOfRect object) { mCascadeClassifier.detectMultiScale(gray,object); return object.toArray(); } /** * 根据屏占比获取大小 * * @param gray gray * @param relativeObjectWidth 最小宽度屏占比 * @param relativeObjectHeight 最小高度屏占比 * @return 大小 */ private Size getSize(Mat gray, float relativeObjectWidth, float relativeObjectHeight) { Size size = gray.size(); int cameraWidth = gray.cols(); int cameraHeight = gray.rows(); int width = Math.round(cameraWidth * relativeObjectWidth); int height = Math.round(cameraHeight * relativeObjectHeight); size.width = 0 >= width ? 0 : (cameraWidth < width ? cameraWidth : width); // width [0, cameraWidth] size.height = 0 >= height ? 0 : (cameraHeight < height ? cameraHeight : height); // height [0, cameraHeight] return size; } /** * 获取画笔颜色 * * @return 颜色 */ public Scalar getRectColor() { return mRectColor; } } ```

nginx配置php,可以看到phpinfo,但是解析不了其他的php代码: 我在ubuntu上搭建lnmp环境，在配置nginx的时候有个小问题。在/etc/nginx/sites-available/创建一个test文件 ``` server { listen 9090; #listen [::]:9090; server_name test.com; large_client_header_buffers 4 16k; client_max_body_size 300m; client_body_buffer_size 128k; proxy_connect_timeout 600; proxy_read_timeout 600; proxy_send_timeout 600; proxy_buffer_size 64k; proxy_buffers 4 32k; proxy_busy_buffers_size 64k; proxy_temp_file_write_size 64k; root /var/www/test; #index index.html index.php; index index.html index.htm index.php; location / { try_files $uri $uri/ =404; } # pass PHP scripts to FastCGI server # location ~ \.php$ { # include snippets/fastcgi-php.conf; # # # With php-fpm (or other unix sockets): fastcgi_pass unix:/var/run/php/php7.0-fpm.sock; # # With php-cgi (or other tcp sockets): #fastcgi_pass 127.0.0.1:9090; fastcgi_index index.php; # fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } # deny access to .htaccess files, if Apache's document root # concurs with nginx's one # #location ~ /\.ht { # deny all; #} } ``` 然后在fastcgi_params文件下添加 ``` fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; ``` 访问127.0.0.1:9090/index.php，会报 GET http://127.0.0.1:9090/index.php net::ERR_INCOMPLETE_CHUNKED_ENCODING 200 (OK) 在nginx的error.log日志中有 2020/01/31 17:11:55 [error] 15569#15569: *6 upstream timed out (110: Connection timed out) while reading upstream, client: 127.0.0.1, server: test.com, request: "GET /index.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/php/php7.0-fpm.sock:", host: "127.0.0.1:9090"

Unable to read TLD "META-INF/taglib.tld": I got an error when using tomcat,the below are the details.And I looked over the source of jaser and found [location[1] = "META-INF/taglib.tld";] in the org.apache.jasper.compiler.TagLibraryInfoImpl.java and TagPluginManager.java.I want to know how to solve it and why?? Thanks. ---------------my web.xml <jsp-config> <taglib> <taglib-uri>/struts-tags</taglib-uri> <taglib-location>/WEB-INF/lib/struts2-core-2.1.6.jar</taglib-location> </taglib> </jsp-config> -------------- There is only struts-tag.tld in the struts2-core-2.1.6.jar. --------------------------------------------------------------------- Servlet.service() for servlet jsp threw exception org.apache.jasper.JasperException: Unable to read TLD "META-INF/taglib.tld" from JAR file "file:/X:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/AccountMgr/WEB-INF/lib/struts2-core-2.1.6.jar": java.lang.NullPointerException at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:51) at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:409) at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:181) at org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:182) at org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:429) at org.apache.jasper.compiler.Parser.parseDirective(Parser.java:492) at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1439) at org.apache.jasper.compiler.Parser.parse(Parser.java:137) at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:255) at org.apache.jasper.compiler.ParserController.parse(ParserController.java:103) at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:170) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:332) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:312) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:299) at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:586) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:389) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) at java.lang.Thread.run(Thread.java:620)

关于JSTL的foreach问题。: ``` <%@ page import="java.util.ArrayList" %> <%@ page import="java.util.List" %> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> <% class Person{ public String name; public int age; public Person(String name, int age){ this.name=name; this.age=age; } public String toString(){ return name+","+age; } } List<Person> person=new ArrayList<Person>(); person.add(new Person("zhangsan",15)); person.add(new Person("lisi",14)); person.add(new Person("wangwu",25)); person.add(new Person("zhaoliu",55)); pageContext.setAttribute("person",person); %> <c:forEach items="${person}" var="p"> <br>${p.name}----${p.age} </c:forEach> </body> </html> ``` 直接输出${p}可以打印tostring结果，但是取属性就不行。这是为啥？ ![图片说明](https://img-ask.csdn.net/upload/202002/07/1581057611_247187.png)

c# mvc 中因为我用session保存了信息，时间一长session过期，需要重新跳转外部某个链接重新获取状态: c# mvc 中因为我用session保存了信息，时间一长session过期，需要重新跳转外部某个链接重新获取状态，问题出现在这了： https://open.weixin.qq.com/connect/oauth2/authorize?appid=qwe123123qqqq&redirect_uri=http://www.xxxxxx.com/userInfo/Index&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect &字符后面的 redirect_uri scope 都出现了未定义实体的错误，请问怎么解决

关于Vue中v-for遍历的问题: 如图：使用semanticUI 的tab组件，要实现这个tab切换效果， ![图片说明](https://img-ask.csdn.net/upload/202001/29/1580301878_788972.png) 在静态页面可以切换：这是原始代码 ``` $('.menu .item').tab(); ---------------------------------- <div class="ui top attached tabular menu"> <a class="active item" data-tab="first">First</a> <a class="item" data-tab="second">Second</a> <a class="item" data-tab="third">Third</a> </div> <div class="ui bottom attached active tab segment" data-tab="first"> First </div> <div class="ui bottom attached tab segment" data-tab="second"> Second </div> <div class="ui bottom attached tab segment" data-tab="third"> Third </div> ``` 我想要实现的效果是使用 vue 获取到后台传递过来的tab标签里的分类数据，点击标签，下方自动切换到对应的div. 自己的代码： ``` <div id="workArea" class="m-container m-padded-tb-big"> <div class="ui top attached tabular menu"> <a v-for="c in categories" class="item" data-tab="first">{{ c.name}}</a> </div> <div class="ui bottom attached active tab segment" data-tab="first"> First </div> </div> ``` 达到这个效果 ![图片说明](https://img-ask.csdn.net/upload/202001/29/1580302472_363102.png) 我想请问一下这个下面的div 要怎么写才能实现这样一个vue切换效果呢下面是全部代码： ``` <!DOCTYPE html> <html xmlns:th="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <title>工具</title> <link rel="stylesheet" type="text/css" href="../../static/css/me.css" th:href="@{/css/me.css}"> <link rel="stylesheet" href="https://cdn.jsdelivr.net/semantic-ui/2.2.4/semantic.min.css"> </head> <body style="background: #439B78;"> <div style="height: 20px;"></div> <div id="workArea" class="m-container m-padded-tb-big"> <div class="ui top attached tabular menu"> <a v-for="c in categories" class="active item" data-tab="first">{{ c.name}}</a> </div> <div class="ui bottom attached active tab segment" data-tab="first"> First </div> </div> <script src="../../static/js/jquery.min.js" th:src="@{/js/jquery.min.js}"></script> <script src="../../static/js/vue.min.js" th:src="@{/js/vue.min.js}"></script> <script src="../../static/js/axios.min.js" th:src="@{/js/axios.min.js}"></script> <script src="https://cdn.jsdelivr.net/npm/semantic-ui@2.4.2/dist/semantic.min.js"></script> <script type="text/javascript"> $(function(){ var data1 = { uri: 'forekit', categories: [] }; var vue = new Vue({ el: '#workArea', data: data1, mounted:function(){ this.load(); }, methods:{ load: function() { var url = this.uri; axios.get(url).then(function(response){ vue.categories = response.data; }); } } }); $('.menu .item').tab(); }); </script> </body> </html> ```

SpringBoot中@Autowired注入bean失败：Error creating bean with name“XXXController”？: # 报错信息： ``` org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'authorizeController': Unsatisfied dependency expressed through field 'userMapper'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userMapper' defined in file [E:\STS-WorkSpace\Forum\target\classes\com\Forum\mapper\UserMapper.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Property 'sqlSessionFactory' or 'sqlSessionTemplate' are required at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:116) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$141/1866850137.getObject(Unknown Source) ~[na:na] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:879) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) ~[spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at com.Forum.ForumApplication.main(ForumApplication.java:19) [classes/:na] Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userMapper' defined in file [E:\STS-WorkSpace\Forum\target\classes\com\Forum\mapper\UserMapper.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Property 'sqlSessionFactory' or 'sqlSessionTemplate' are required at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1796) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$141/1866850137.getObject(Unknown Source) ~[na:na] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1287) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1207) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] ... 20 common frames omitted Caused by: java.lang.IllegalArgumentException: Property 'sqlSessionFactory' or 'sqlSessionTemplate' are required at org.springframework.util.Assert.notNull(Assert.java:198) ~[spring-core-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.mybatis.spring.support.SqlSessionDaoSupport.checkDaoConfig(SqlSessionDaoSupport.java:123) ~[mybatis-spring-2.0.1.jar:2.0.1] at org.mybatis.spring.mapper.MapperFactoryBean.checkDaoConfig(MapperFactoryBean.java:73) ~[mybatis-spring-2.0.1.jar:2.0.1] at org.springframework.dao.support.DaoSupport.afterPropertiesSet(DaoSupport.java:44) ~[spring-tx-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1855) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1792) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE] ... 31 common frames omitted ``` # Mapper代码： ``` package com.Forum.mapper; import org.apache.ibatis.annotations.Insert; import org.apache.ibatis.annotations.Mapper; import com.Forum.Model.User; @Mapper public interface UserMapper{ @Insert("insert into user (name,account_id,token,gmt_create,gmt_modified) values (#{name},#{accountId}),#{token},#{gmtCreate},#{gmtModified}") public void insert(User user); } ``` # 启动代码： ``` package com.Forum; import org.mybatis.spring.annotation.MapperScan; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration; import org.springframework.context.annotation.ComponentScan; @SpringBootApplication(exclude = {DataSourceAutoConfiguration.class}) @ComponentScan(basePackages = {"com.Forum.*"}) @MapperScan(basePackages = {"com.Forum.mapper"}) public class ForumApplication { public static void main(String[] args) { SpringApplication.run(ForumApplication.class, args); } } ``` # Controller代码： ```package com.Forum.Controller; import java.util.UUID; import javax.servlet.http.HttpServletRequest; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestParam; import com.Forum.Dto.AccesstokenDTO; import com.Forum.Dto.GitHubUser; import com.Forum.Model.User; import com.Forum.Provider.GitHubProvider; import com.Forum.mapper.UserMapper; @Controller public class AuthorizeController{ @Autowired private GitHubProvider gitHubProvider; @Value("${github.client.id}") private String clientId; @Value("${github.client.secret}") private String clientSecret; @Value("${github.redirect.uri}") private String redirectUri; @Autowired public UserMapper userMapper; @GetMapping("/callback") public String callback(@RequestParam(name="code") String code, @RequestParam(name="state") String state, HttpServletRequest request ) { AccesstokenDTO accesstokenDTO = new AccesstokenDTO(); accesstokenDTO.setCode(code); accesstokenDTO.setRedirect_uri("redirectUri"); accesstokenDTO.setClient_id(clientId); accesstokenDTO.setClient_secret(clientSecret); accesstokenDTO.setState(state); String accessToken = gitHubProvider.getAccessToken(accesstokenDTO); GitHubUser githubUser = gitHubProvider.getUser(accessToken); if(githubUser != null) { // 登录成功，写cookie和session User user = new User(); user.setToken(UUID.randomUUID().toString()); user.setName(githubUser.getName()); user.setAccountId(String.valueOf(githubUser.getId())); user.setQmtCreate(System.currentTimeMillis()); user.setQmtModified(user.getQmtCreate()); userMapper.insert(user); request.getSession().setAttribute("user", githubUser); return "redirect:/"; // 去掉地址后缀 }else { // 登录失败，重新登录 return "redirect:/"; } } } ```

Android调用摄像头录像时出现空指针异常: Process: com.android.camera2, PID: 21756 java.lang.NullPointerException: Attempt to invoke virtual method 'void com.android.camera.FocusOverlayManager.overrideFocusMode(com.android.ex.camera2.portability.CameraCapabilities$FocusMode)' on a null object reference ``` private void startVideo() { Intent intent = new Intent(); //指定动作，启动相机 intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE); intent.addCategory(Intent.CATEGORY_DEFAULT); Log.d(TAG, "指定启动相机动作，完成。"); //创建文件 createVideoFile(); Log.d(TAG, "创建视频文件结束。"); //添加权限 intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); Log.d(TAG, "添加权限。"); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { //做一些处理 //获取uri mVideoUri = FileProvider.getUriForFile(this, "com.example.camera.fileprovider", mVideoFile); } else { //在版本低于此的时候，做一些处理 mVideoUri = Uri.fromFile(mVideoFile); } Log.d(TAG, "根据视频文件路径获取uri。"); //将uri加入到额外数据 intent.putExtra(MediaStore.EXTRA_OUTPUT, mVideoUri); Log.d(TAG, "将uri加入启动相机的额外数据。"); Log.d(TAG, "启动相机..."); //启动相机并要求返回结果 startActivityForResult(intent, VIDEO_RESULT_CODE); Log.d(TAG, "拍摄中..."); } ```

本人是初学者看一些代码有些不懂，还请大神指点一下，谢谢: ${ msg }表示什么意思呢？？？ index.jsp怎么跳转到main.jsp呢？？？ **index.jsp** ``` <html > <title>聊天室</title> <link href="CSS/style.css" rel="stylesheet"> <script type="text/javascript"> function check(){ if(document.getElementById("form1").username.value==""){ alert("请输入用户名！"); document.getElementById("form1").username.focus(); return false; } if(document.getElementById("form1").password.value==""){ alert("请输入密码名！"); document.getElementById("form1").password.focus(); return false; } } </script> <body> <br> <center><h3 style="color:red;">${ msg }</h3></center> <form id="form1" name="form1" method="post" action="${pageContext.request.contextPath }/user" onSubmit="return check()"> <input type="hidden" name="method" value="login"> <table width="371" height="230" border="0" align="center" cellpadding="0" cellspacing="0" background="images/login.jpg"> <tr> <td height="120" colspan="3" class="word_dark"> </td> </tr> <tr> <td width="53" align="center" valign="top" class="word_dark"> </td> <td width="216" align="center" valign="top" class="word_dark"> <table width="100%" height="100%"> <tr> <td>用户名：</td> <td><input type="text" name="username" class="login"></td> </tr> </table> </td> <td width="94" valign="top" class="word_dark"></td> </tr> <tr> <td width="53" align="center" valign="top" class="word_dark"> </td> <td width="216" align="center" valign="top" class="word_dark"> <table width="100%" height="100%"> <tr> <td>密  码：</td> <td><input type="password" name="password" class="login"></td> </tr> </table> </td> <td width="94" valign="top" class="word_dark"></td> </tr> <tr> <td width="53" align="center" valign="top" class="word_dark"> </td> <td width="216" align="center" valign="top" class="word_dark"> <input name="Submit" type="submit" class="btn_bg" value="进入"> </td> <td width="94" valign="top" class="word_dark"> </td> </tr> </table> </form> </body> </html> ``` **main** ``` <%@page contentType="text/html" pageEncoding="UTF-8"%> <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> <%@ include file="safe.jsp"%> <html> <head> <title>聊天室</title> <link href="CSS/style.css" rel="stylesheet"> <script type="text/javascript" src="${ pageContext.request.contextPath }/js/jquery-1.8.3.js"></script> <script type="text/javascript"> var sysBBS = "<span style='font-size:14px; line-height:30px;'>欢迎光临心之语聊天室，请遵守聊天室规则，不要使用不文明用语。</span><br><span style='line-height:22px;'>";var sysBBS = "<span style='font-size:14px; line-height:30px;'>欢迎光临心之语聊天室，请遵守聊天室规则，不要使用不文明用语。</span><br><span style='line-height:22px;'>"; window.setInterval("showContent();",1000); window.setInterval("showOnLine();",10000); window.setInterval("check();",1000); // Jquery:JS框架. // 相当于window.onload $(function(){ showOnLine(); showContent(); check(); }); function check(){ $.post("${pageContext.request.contextPath}/user?method=check",function(data){ if(data == 1){ // 提示用户下线了 alert("用户已经被踢下线了!"); // 回到登录页面! window.location = "index.jsp"; } }); } // 显示在线人员列表 function showOnLine(){ // 异步发送请求获取在线人员列表 // Jquery发送异步请求 $.post("${pageContext.request.contextPath}/online.jsp?"+new Date().getTime(),function(data){ // $("#online") == document.getElementById("online"); $("#online").html(data); }); } // 显示聊天的内容 function showContent(){ $.post("${pageContext.request.contextPath}/user?"+new Date().getTime(),{'method':'getMessage'},function(data){ $("#content").html(sysBBS+data); }); } function set(selectPerson){ //自动添加聊天对象 if(selectPerson != "${existUser.username}"){ form1.to.value=selectPerson; }else{ alert("请重新选择聊天对象！"); } } function send(){ if(form1.to.value==""){ alert("请选择聊天对象！"); return false; } if(form1.content.value==""){ alert("发送信息不可以为空！"); form1.content.focus(); return false; } // $("#form1").serialize():让表单中所有的元素都提交. // jquery提交数据.{id:1,name:aa,age:25} $.post("${pageContext.request.contextPath}/user?"+new Date().getTime(),$("#form1").serialize(),function(data){ $("#content").html(sysBBS+data+"</span>"); }); } function exit(){ alert("欢迎您下次光临！"); window.location.href="${pageContext.request.contextPath}/user?method=exit"; } function checkScrollScreen(){ if(!$("#scrollScreen").attr("checked")){ $("#content").css("overflow","scroll"); }else{ $("#content").css("overflow","hidden"); //当聊天信息超过一屏时，设置最先发送的聊天信息不显示 //alert($("#content").height()); $("#content").scrollTop($("#content").height()*2); } setTimeout('checkScrollScreen()',500); } </script> </head> <body> <table width="778" height="150" border="0" align="center" cellpadding="0" cellspacing="0" background="images/top.jpg"> <tr> <td> </td> </tr> </table> <table width="778" height="276" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td width="165" valign="top" bgcolor="#f6fded" id="online" style="padding:5px">在线人员列表</td> <td width="613" height="200px" valign="top" background="images/main_bj.jpg" bgcolor="#FFFFFF" style="padding:5px; "> <div style="height:290px; overflow:hidden" id="content">聊天内容</div></td> </tr> </table> <table width="778" height="95" border="0" align="center" cellpadding="0" cellspacing="0" bordercolor="#D6D3CE" background="images/bottom.jpg"> <form action="" id="form1" name="form1" method="post"> <input type="hidden" name="method" value="sendMessage"/> <tr> <td height="30" align="left"> </td> <td height="37" align="left"> <input name="from" type="hidden" value="${existUser.username}">[${existUser.username} ]对 <input name="to" type="text" value="" size="35" readonly="readonly"> 表情 <select name="face" class="wenbenkuang"> <option value="无精打采的">无精打采的</option> </select> 说：</td> <td width="189" align="left">  字体颜色： <select name="color" size="1" class="wenbenkuang" id="select"> <option selected>默认颜色</option> <option style="color:#999999" value="999999">烟雨蒙蒙</option> </select> </td> <td width="19" align="left"><input name="scrollScreen" type="checkbox" class="noborder" id="scrollScreen" onClick="checkScrollScreen()" value="1" checked> </td> </tr> <tr> <td width="21" height="30" align="left"> </td> <td width="549" align="left"> <input name="content" type="text" size="70" onKeyDown="if(event.keyCode==13 && event.ctrlKey){send();}"> <input name="Submit2" type="button" class="btn_grey" value="发送" onClick="send()"> </td> <td align="right"><input name="button_exit" type="button" class="btn_grey" value="退出聊天室" onClick="exit()"> </td> <td align="center"> </td> </tr> <tr> <td height="30" align="left"> </td> <td align="center"> </td> </tr> </form> </table> </body> </html> ```

spring cloud gateway (Greenwich.SR2): how to route a request to a controller of itself ?: spring cloud gateway (Greenwich.SR2): how to route a request to a controller of itself ? I write several controller http api to maintain the gateway configuration data in mysql. I write the Decryption/Encryption logic for the request/response in the Filters. I wanna implement like this: ```r.path("/gateway/**").uri( itself );``` such as http://ip:port/gateway/addServiceInfo will route to the api of this/current instance: ```@Controller MaintainController{ @PostMapping("addServiceInfo") addServiceInfo(){ //do something } }```

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程序员该看的几部电影: 1、骇客帝国(1999) 概念：在线/离线，递归，循环，矩阵等剧情简介：不久的将来，网络黑客尼奥对这个看似正常的现实世界产生了怀疑。他结识了黑客崔妮蒂，并见到了黑客组织的首领墨菲斯。墨菲斯告诉他，现实世界其实是由一个名叫“母体”的计算机人工智能系统控制，人们就像他们饲养的动物，没有自由和思想，而尼奥就是能够拯救人类的救世主。可是，救赎之路从来都不会一帆风顺，到底哪里才是真实的世界？如何...

Python绘图，圣诞树，花，爱心 | Turtle篇: 每周每日，分享Python实战代码，入门资料，进阶资料，基础语法，爬虫，数据分析，web网站，机器学习，深度学习等等。公众号回复【进群】沟通交流吧，QQ扫码进群学习吧微信群 QQ群 1.画圣诞树 import turtle screen = turtle.Screen() screen.setup(800,600) circle = turtle.Turtle()...

作为一个程序员，CPU的这些硬核知识你必须会！: CPU对每个程序员来说，是个既熟悉又陌生的东西？如果你只知道CPU是中央处理器的话，那可能对你并没有什么用，那么作为程序员的我们，必须要搞懂的就是CPU这家伙是如何运行的，尤其要搞懂它里面的寄存器是怎么一回事，因为这将让你从底层明白程序的运行机制。随我一起，来好好认识下CPU这货吧把CPU掰开来看对于CPU来说，我们首先就要搞明白它是怎么回事，也就是它的内部构造，当然，CPU那么牛的一个东...

还记得那个提速8倍的IDEA插件吗？VS Code版本也发布啦！！: 去年，阿里云发布了本地 IDE 插件 Cloud Toolkit，仅 IntelliJ IDEA 一个平台，就有 15 万以上的开发者进行了下载，体验了一键部署带来的开发便利。时隔一年的今天，阿里云正式发布了 Visual Studio Code 版本，全面覆盖前端开发者，帮助前端实现一键打包部署，让开发提速 8 倍。 VSCode 版本的插件，目前能做到什么？安装插件之后，开发者可以立即体验...

破14亿，Python分析我国存在哪些人口危机！: 一、背景二、爬取数据三、数据分析 1、总人口 2、男女人口比例 3、人口城镇化 4、人口增长率 5、人口老化（抚养比） 6、各省人口 7、世界人口四、遇到的问题遇到的问题 1、数据分页，需要获取从1949-2018年数据，观察到有近20年参数：LAST20，由此推测获取近70年的参数可设置为：LAST70 2、2019年数据没有放上去，可以手动添加上去 3、将数据进行行列转换 4、列名...

2019年除夕夜的有感而发: 天气：小雨（加小雪）温度：3摄氏度空气：严重污染（399）风向：北风风力：微风现在是除夕夜晚上十点钟，再有两个小时就要新的一年了；首先要说的是我没患病，至少现在是没有患病；但是心情确像患了病一样沉重；现在这个时刻应该大部分家庭都在看春晚吧，或许一家人团团圆圆的坐在一起，或许因为某些特殊原因而不能团圆；但不管是身在何处，身处什么境地，我都想对每一个人说一句：新年快乐！不知道csdn这...

听说想当黑客的都玩过这个Monyer游戏（1~14攻略）: 第零关进入传送门开始第0关（游戏链接）请点击链接进入第1关：连接在左边→ ←连接在右边看不到啊。。。。（只能看到一堆大佬做完的留名，也能看到菜鸡的我，在后面~~）直接fn+f12吧 <span>连接在左边→</span> <a href="first.php"></a> <span>←连接在右边</span> o...

在家远程办公效率低？那你一定要收好这个「在家办公」神器！: 相信大家都已经收到国务院延长春节假期的消息，接下来，在家远程办公可能将会持续一段时间。但是问题来了。远程办公不是人在电脑前就当坐班了，相反，对于沟通效率，文件协作，以及信息安全都有着极高的要求。有着非常多的挑战，比如： 1在异地互相不见面的会议上，如何提高沟通效率？ 2文件之间的来往反馈如何做到及时性？如何保证信息安全？ 3如何规划安排每天工作，以及如何进行成果验收？ ...... ...

作为一个程序员，内存和磁盘的这些事情，你不得不知道啊！！！: 截止目前，我已经分享了如下几篇文章：一个程序在计算机中是如何运行的？超级干货！！！作为一个程序员，CPU的这些硬核知识你必须会！作为一个程序员，内存的这些硬核知识你必须懂！这些知识可以说是我们之前都不太重视的基础知识，可能大家在上大学的时候都学习过了，但是嘞，当时由于老师讲解的没那么有趣，又加上这些知识本身就比较枯燥，所以嘞，大家当初几乎等于没学。再说啦，学习这些，也看不出来有什么用啊！...

2020年的1月，我辞掉了我的第一份工作: 其实，这篇文章，我应该早点写的，毕竟现在已经2月份了。不过一些其它原因，或者是我的惰性、还有一些迷茫的念头，让自己迟迟没有试着写一点东西，记录下，或者说是总结下自己前3年的工作上的经历、学习的过程。我自己知道的，在写自己的博客方面，我的文笔很一般，非技术类的文章不想去写；另外我又是一个还比较热衷于技术的人，而平常复杂一点的东西，如果想写文章写的清楚点，是需要足够...

别低估自己的直觉，也别高估自己的智商: 所有群全部吵翻天，朋友圈全部沦陷，公众号疯狂转发。这两周没怎么发原创，只发新闻，可能有人注意到了。我不是懒，是文章写了却没发，因为大家的关注力始终在这次的疫情上面，发了也没人看。当然，我...

这个世界上人真的分三六九等，你信吗？: 偶然间，在知乎上看到一个问题一时间，勾起了我深深的回忆。以前在厂里打过两次工，做过家教，干过辅导班，做过中介。零下几度的晚上，贴过广告，满脸、满手地长冻疮。再回首那段岁月，虽然苦，但让我学会了坚持和忍耐。让我明白了，在这个世界上，无论环境多么的恶劣，只要心存希望，星星之火，亦可燎原。下文是原回答，希望能对你能有所启发。如果我说，这个世界上人真的分三六九等，...

节后首个工作日，企业们集体开晨会让钉钉挂了: By 超神经场景描述：昨天 2 月 3 日，是大部分城市号召远程工作的第一天，全国有接近 2 亿人在家开始远程办公，钉钉上也有超过 1000 万家企业活跃起来。关键词：十一出行人脸...

Java基础知识点梳理: 虽然已经在实际工作中经常与java打交道，但是一直没系统地对java这门语言进行梳理和总结，掌握的知识也比较零散。恰好利用这段时间重新认识下java，并对一些常见的语法和知识点做个总结与回顾，一方面为了加深印象，方便后面查阅，一方面为了掌握好Android打下基础。

2020年全新Java学习路线图，含配套视频，学完即为中级Java程序员！！: 新的一年来临，突如其来的疫情打破了平静的生活！在家的你是否很无聊，如果无聊就来学习吧！世上只有一种投资只赚不赔，那就是学习！！！传智播客于2020年升级了Java学习线路图，硬核升级，免费放送！学完你就是中级程序员，能更快一步找到工作！一、Java基础 JavaSE基础是Java中级程序员的起点，是帮助你从小白到懂得编程的必经之路。在Java基础板块中有6个子模块的学...

B 站上有哪些很好的学习资源?: 哇说起B站，在小九眼里就是宝藏般的存在，放年假宅在家时一天刷6、7个小时不在话下，更别提今年的跨年晚会，我简直是跪着看完的！！最早大家聚在在B站是为了追番，再后来我在上面刷欧美新歌和漂亮小姐姐的舞蹈视频，最近两年我和周围的朋友们已经把B站当作学习教室了，而且学习成本还免费，真是个励志的好平台ヽ(.◕ฺˇд ˇ◕ฺ;)ﾉ下面我们就来盘点一下B站上优质的学习资源：综合类 Oeasy：综合...