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Nikolay Baranenko's questions

Martin Hope
Nikolay Baranenko
Asked: 2022-07-11 19:19:47 +0800 CST
  • 0

我今天有 MacOS Monterey 12.0.1 远程桌面管理器免费要求我在更新后更新到 2022.1.13.0 我通过 ssh 连接到主机 - 好的。我尝试在ssh中按tab提示值，MacOS发出不知道或布局错误的声音。布局是正确的...

你能告诉我可能出了什么问题以及如何解决这个问题吗？

ssh macos
Martin Hope
Nikolay Baranenko
Asked: 2020-04-06 06:30:19 +0800 CST
  • 1

你好。

在应用程序中添加了一个按钮，按下对 WEB 服务的 HTTP 请求应该通过哪个按钮

package com.example.drno.android_app_1;

import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Build;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import java.io.*;
import java.lang.Math;

import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;

import static android.util.Half.EPSILON;
import static java.lang.Math.sin;
import static java.lang.Math.cos;
import static java.lang.Math.sqrt;

import android.os.StrictMode;

public class MainActivity extends AppCompatActivity implements SensorEventListener {


    private TextView textView;
    private Button button;

    private TextView textView_HTTP;

    private Sensor mTemperature;
    private final static String NOT_SUPPORTED_MESSAGE = "Sorry, sensor not available for this device.";

    private TextView accelerometerlabel;
//    private Sensor senAccelerometer;

    private long lastUpdate = 0;
    private float last_x, last_y, last_z;
    private static final int SHAKE_THRESHOLD = 600;


    private TextView gyroscopelabel;
    private Sensor senGyroscope;

    private SensorManager mSensorManager;
    private Sensor mLight;
    private Sensor mAccelerometer;

    private String Send_http;

    private final String USER_AGENT = "Mozilla/5.0";


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

//        if (android.os.Build.VERSION.SDK_INT > 9) {
//            StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
//            StrictMode.setThreadPolicy(policy);
//        }


//        нажатие выход из приложения
        button =(Button) findViewById(R.id.button_exit);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                finish();
                System.exit(0);
            }
        });

        textView=(TextView) findViewById(R.id.textView_HTTP);


//        нажатие старт измерений
        button =(Button) findViewById(R.id.button_start);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
//              new MainActivity();
              onResume();

            }
        });
//        нажатие стоп измерений
        button =(Button) findViewById(R.id.button_stop);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                onPause();
            }
        });

        accelerometerlabel = (TextView) findViewById(R.id.textView_Accelerometer);
        mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
        mAccelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);

        gyroscopelabel = (TextView) findViewById(R.id.textView_Gyroscope);

        senGyroscope = mSensorManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE);


    }

    public void sayHello(View view) throws IOException {
        textView_HTTP.setText("Текст должен быть изменен");
        TextView textv = (TextView)findViewById(R.id.textView_HTTP);
        String url="http://31.220.63.13:5005/accelerometer";
        URL obj = new URL(url);
        HttpURLConnection con = (HttpURLConnection) obj.openConnection();
        // optional default is GET
        con.setRequestMethod("GET");

        //add request header
        con.setRequestProperty("User-Agent", USER_AGENT);

        int responseCode = con.getResponseCode();
        System.out.println("\nSending 'GET' request to URL : " + url);
        System.out.println("Response Code : " + responseCode);

        BufferedReader in = new BufferedReader(
                new InputStreamReader(con.getInputStream()));
        String inputLine;
        StringBuffer response = new StringBuffer();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();
        System.out.println(response.toString());
        textView_HTTP.setText(response.toString());

    }

    private void getRandomNumber() {
        ArrayList numbersGenerated = new ArrayList();

        for (int i = 0; i < 6; i++) {
            Random randNumber = new Random();
            int iNumber = randNumber.nextInt(48) + 1;

            if(!numbersGenerated.contains(iNumber)) {
                numbersGenerated.add(iNumber);
            } else {
                i--;
            }
        }
    }

    // HTTP GET request
    private String sendGet(String URL) throws Exception {

        URL obj = new URL(URL);
        HttpURLConnection con = (HttpURLConnection) obj.openConnection();

        // optional default is GET
        con.setRequestMethod("GET");

        //add request header
        con.setRequestProperty("User-Agent", USER_AGENT);

        int responseCode = con.getResponseCode();
        System.out.println("\nSending 'GET' request to URL : " + URL);
        System.out.println("Response Code : " + responseCode);

        BufferedReader in = new BufferedReader(
                new InputStreamReader(con.getInputStream()));
        String inputLine;
        StringBuffer response = new StringBuffer();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();

        //print result
//        System.out.println(response.toString());
           return(response.toString());
    }



    @Override
    public void onSensorChanged(SensorEvent sensorEvent) {
        Sensor mySensor = sensorEvent.sensor;

//        if (mySensor.getType() == Sensor.TYPE_AMBIENT_TEMPERATURE) {
//            float ambient_temperature = sensorEvent.values[0];
//            temperaturelabel.setText("Окружающая температура:\n " + String.valueOf(ambient_temperature) + getResources().getString(R.string.celsius));
//        }

    }

    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {

    }

    @Override
    protected void onResume() {
//        super.onResume();
//        mSensorManager.registerListener(this, mTemperature, SensorManager.SENSOR_DELAY_NORMAL);
        super.onResume();
//        mSensorManager.registerListener(this, mAccelerometer, SensorManager.SENSOR_DELAY_NORMAL);
        mSensorManager.registerListener(this, mAccelerometer , SensorManager.SENSOR_DELAY_NORMAL);
        mSensorManager.registerListener(this, senGyroscope , SensorManager.SENSOR_DELAY_NORMAL);
    }

    @Override
    protected void onPause() {
//        super.onPause();
//        mSensorManager.unregisterListener(this);
        super.onPause();
        mSensorManager.unregisterListener(this);
    }

}

返回一个错误

android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:384)
                                                                                        at android.view.View.performClick(View.java:6294) 
                                                                                        at android.view.View$PerformClick.run(View.java:24770) 
                                                                                        at android.os.Handler.handleCallback(Handler.java:790) 
                                                                                        at android.os.Handler.dispatchMessage(Handler.java:99) 
                                                                                        at android.os.Looper.loop(Looper.java:164) 
                                                                                        at android.app.ActivityThread.main(ActivityThread.java:6494) 
                                                                                        at java.lang.reflect.Method.invoke(Native Method) 
                                                                                        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) 
                                                                                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807) 
                                                                                     Caused by: android.os.NetworkOnMainThreadException
                                                                                        at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1450)

为什么以及如何解决它？

ps

在 AndroidManifest.xml 我注册了权限

<!--добавил для HTTP-->
<!--<permission  android:name="android.permission.INTERNET"></permission>-->
<uses-permission android:name="android.permission.INTERNET"/>
<!--<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />-->
<!--<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />-->

<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=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN"/>

            <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>
    </activity>
</application>

试图添加

if (android.os.Build.VERSION.SDK_INT > 9) {
    StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
    StrictMode.setThreadPolicy(policy);
}
android
Martin Hope
Nikolay Baranenko
Asked: 2020-04-04 02:53:50 +0800 CST
  • 0

你好。

放置在应用程序中，能够读取环境温度传感器的值

temperaturelabel = (TextView) findViewById(R.id.myTemp);
mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);
if(Build.VERSION.SDK_INT>= Build.VERSION_CODES.ICE_CREAM_SANDWICH){
    mTemperature= mSensorManager.getDefaultSensor(Sensor.TYPE_AMBIENT_TEMPERATURE); 
}
if (mTemperature == null) {
    temperaturelabel.setText(NOT_SUPPORTED_MESSAGE);
}

在模拟器中运行时

Name: Nexus_6_API_27 CPU/ABI: Google APIs Intel Atom (x86) Path: C:\Users\drno\.android\avd\Nexus_6_API_27.avd Target: google_apis [Google APIs] (API level 27) Skin: nexus_6 SD Card: 100M hw.dPad: no runtime.network.speed: full hw.accelerometer: yes hw.device.name: Nexus 6 vm.heapSize: 256 skin.dynamic: yes hw.device.manufacturer: Google hw.gps: yes hw.initialOrientation: Portrait image.androidVersion.api: 27 hw.audioInput: yes image.sysdir.1: system-images\android-27\google_apis\x86\ tag.id: google_apis showDeviceFrame: yes hw.camera.back: emulated hw.mainKeys: no AvdId: Nexus_6_API_27 hw.camera.front: emulated hw.lcd.density: 560 avd.ini.displayname: Nexus 6 API 27 hw.gpu.mode: auto hw.device.hash2: MD5:9b564b60b1aebee32c73ded9daa1e620 hw.ramSize: 1536 hw.trackBall: no hw.battery: yes hw.cpu.ncore: 4 hw.sdCard: yes tag.display: Google APIs runtime.network.latency: none hw.keyboard: yes hw.sensors.proximity: yes disk.dataPartition.size: 800M hw.sensors.orientation: yes avd.ini.encoding: UTF-8 hw.gpu.enabled: yes

好的

在此处输入图像描述

收集的 APK 上传到三星 Galaxy Note 4 应用程序返回了一个关于温度传感器不可用的错误 -抱歉，传感器不适用于此设备

请帮我找出原因。

ps项目链接

android
Martin Hope
Nikolay Baranenko
Asked: 2020-04-03 20:30:41 +0800 CST
  • 0

你好。

我想向应用程序添加从手机传感器读取信息的功能。

制作了 SensorActivity 类的存根

package com.example.drno.android_app_1;

import android.support.v7.app.ActionBarActivity;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Build;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import com.example.drno.android_app_1.R;

import static android.content.Context.SENSOR_SERVICE;

public class MainActivity2 extends ActionBarActivity implements SensorEventListener {

}

再次发现问题，该项目没有看到android.support.v7.app.ActionBarActivity类

以前，我通过向 build.gradle 添加依赖项解决了这个问题

编译“com.android.support:support-core-utils:27.1.0”

这个项目没有工作，我不明白为什么......

链接到 GitHub 上的项目源

android
Martin Hope
Nikolay Baranenko
Asked: 2020-03-19 04:09:31 +0800 CST
  • 0

你好。

尝试构建我的第一个 android 应用程序

ОС Windwows 10,
Intellige IDEA 2017.2
JDK jdk1.8.0_161
Android API 27 Platform
Gradle 4.6
Android SDK 25.5.2

已安装的软件包

在此处输入图像描述 在此处输入图像描述

返回一个错误

Error:A problem occurred configuring project ':app'.
> Could not resolve all dependencies for configuration ':app:_debugApkCopy'.
   > Could not find any version that matches com.android.support:appcompat-v7:27.+.
     Versions that do not match:
         26.0.0-alpha1
         25.3.1
         25.3.0
         25.2.0
         25.1.1
         + 31 more
     Required by:
         project :app
   > Could not find any version that matches com.android.support:design:27.+.
     Versions that do not match:
         26.0.0-alpha1
         25.3.1
         25.3.0
         25.2.0
         25.1.1
         + 21 more
     Required by:
         project :app

如何解决这个问题呢？

android
Martin Hope
Nikolay Baranenko
Asked: 2020-09-22 00:11:56 +0800 CST
  • 0

你好。

添加了存储库

[ol7_optional_latest]
name=Oracle Linux $releasever Optional Latest ($basearch)
baseurl=http://yum.oracle.com/repo/OracleLinux/OL7/optional/latest/$basearch/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
gpgcheck=1
enabled=1
after execute

运行 yum update 命令

yum clean all
yum --enablerepo=ol7_optional_latest clean metadata

检查存储库状态并禁用

ol7_optional_latest/x86_64    Oracle Linux 7Server Optional Latest (x86_64)                                                         disabled

如何解决问题并将其转化为 ENABLED？

linux
Martin Hope
Nikolay Baranenko
Asked: 2020-09-20 01:24:33 +0800 CST
  • 2

你好。

要在 Oracle Linux 7.4 上安装应用程序，需要 php-mbstring 和 php-bcmath

存储库列表

Loaded plugins: replace, ulninfo
repo id                                     repo name                                                                                        status
*epel/x86_64                                Extra Packages for Enterprise Linux 7 - x86_64                                                         11,948
ol7_UEKR4/x86_64                            Latest Unbreakable Enterprise Kernel Release 4 for Oracle Linux 7Server (x86_64)                       335+93
ol7_latest/x86_64                           Oracle Linux 7Server Latest (x86_64)                                                             17,653+5,136
zabbix/x86_64                               Zabbix Official Repository - x86_64                                                                        28
zabbix-non-supported/x86_64                 Zabbix Official Repository non-supported - x86_64

您会推荐哪些存储库供 Oracle Linux 安装 php-mbstring 和 php-bcmath？

linux
Martin Hope
Nikolay Baranenko
Asked: 2020-09-18 12:20:44 +0800 CST
  • 1

你好。

在 Linux 操作系统上

Oracle Linux Server release 6.9
NAME="Oracle Linux Server"
VERSION="6.9"
ID="ol"
VERSION_ID="6.9"
PRETTY_NAME="Oracle Linux Server 6.9"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:oracle:linux:6:9:server"
HOME_URL="https://linux.oracle.com/"
BUG_REPORT_URL="https://bugzilla.oracle.com/"

ORACLE_BUGZILLA_PRODUCT="Oracle Linux 6"
ORACLE_BUGZILLA_PRODUCT_VERSION=6.9
ORACLE_SUPPORT_PRODUCT="Oracle Linux"
ORACLE_SUPPORT_PRODUCT_VERSION=6.9
Red Hat Enterprise Linux Server release 6.9 (Santiago)
Oracle Linux Server release 6.9

尝试从存储库安装

mysql 5.7

yum install https://dev.mysql.com/get/mysql57-community-release-el6-11.noarch.rpm
sudo rpm -ivh mysql57-community-release-el6-11.noarch.rpm
yum install mysql-community-server

我收到一个错误

Error: Package: mysql-community-client-5.7.19-1.el7.x86_64 (mysql57-community)
           Requires: libc.so.6(GLIBC_2.14)(64bit)
Error: Package: perl-DBD-MySQL-4.013-3.el6.x86_64 (@public_ol6_latest)
           Requires: libmysqlclient.so.16(libmysqlclient_16)(64bit)
           Removing: mysql-libs-5.1.73-8.0.1.el6_8.x86_64 (@public_ol6_latest)
               libmysqlclient.so.16(libmysqlclient_16)(64bit)
           Obsoleted By: mysql-community-libs-5.7.19-1.el7.x86_64 (mysql57-community)
               Not found
           Available: mysql-libs-5.1.47-4.el6.x86_64 (public_ol6_latest)
               libmysqlclient.so.16(libmysqlclient_16)(64bit)
           Available: mysql-libs-5.1.52-1.el6_0.1.x86_64 (public_ol6_latest)
               libmysqlclient.so.16(libmysqlclient_16)(64bit)
           Available: mysql-libs-5.1.61-1.el6_2.1.x86_64 (public_ol6_latest)
               libmysqlclient.so.16(libmysqlclient_16)(64bit)
           Available: mysql-libs-5.1.61-4.el6.x86_64 (public_ol6_latest)
               libmysqlclient.so.16(libmysqlclient_16)(64bit)
           Available: mysql-libs-5.1.66-1.el6_3.x86_64 (public_ol6_latest)
               libmysqlclient.so.16(libmysqlclient_16)(64bit)
           Available: mysql-libs-5.1.66-2.el6_3.x86_64 (public_ol6_latest)
               libmysqlclient.so.16(libmysqlclient_16)(64bit)
           Available: mysql-libs-5.1.67-1.el6_3.x86_64 (public_ol6_latest)
               libmysqlclient.so.16(libmysqlclient_16)(64bit)
           Available: mysql-libs-5.1.69-1.el6_4.x86_64 (public_ol6_latest)
               libmysqlclient.so.16(libmysqlclient_16)(64bit)
           Available: mysql-libs-5.1.71-1.el6.x86_64 (public_ol6_latest)
               libmysqlclient.so.16(libmysqlclient_16)(64bit)
           Available: mysql-libs-5.1.73-3.el6_5.x86_64 (public_ol6_latest)
               libmysqlclient.so.16(libmysqlclient_16)(64bit)
           Available: mysql-libs-5.1.73-5.el6_6.x86_64 (public_ol6_latest)
               libmysqlclient.so.16(libmysqlclient_16)(64bit)
           Available: mysql-libs-5.1.73-5.el6_7.1.x86_64 (public_ol6_latest)
               libmysqlclient.so.16(libmysqlclient_16)(64bit)
           Available: mysql-libs-5.1.73-7.el6.x86_64 (public_ol6_latest)
               libmysqlclient.so.16(libmysqlclient_16)(64bit)
Error: Package: mysql-community-server-5.7.19-1.el7.x86_64 (mysql57-community)
           Requires: libsasl2.so.3()(64bit)
Error: Package: mysql-community-server-5.7.19-1.el7.x86_64 (mysql57-community)
           Requires: systemd

如何解决这个问题呢？

mysql
Martin Hope
Nikolay Baranenko
Asked: 2020-08-31 04:27:19 +0800 CST
  • 0

你好。

希望通过主持人详细创建您自己的关于 zabbix 事件的自定义报告。找到一张包含事件信息的表格，

SELECT eventid, source, `object`, objectid, clock, value, acknowledged, ns
FROM zabbix.events

找到 zabbix.hosts 和 zabbix.host_inventory。

zabbix.events 与 zabbix.hosts 有什么关系？

我怀疑这可能通过objectid，但是如何......

zabbix
Martin Hope
Nikolay Baranenko
Asked: 2020-08-22 07:50:18 +0800 CST
  • 0

你好。

我在表格上有 2 个日期时间选择器

我用 document.create 像这样定义它们

$(document).ready(function()
    {
        $('#datetime_from').datetimepicker(
            {
                maxDate: tdatetime,
                onSelect: function(selected,evnt) {
                    updateDateTime_from(selected);
                }
            }
        ).datetimepicker("setDate", fdatetime);

        $('#datetime_to').datetimepicker(
            {
                minDate: fdatetime,
                onSelect: function(selected,evnt) {
                    updateDateTime_to(selected);
                }
            }
        ).datetimepicker("setDate", tdatetime);
});

在我定义 updateDateTime_from、updateDateTime_to 之外，以处理其中日期和时间选择的更改我尝试调整 minDate 和 maxDate 选项

function updateDateTime_from(value){
$("#datetime_to").datetimepicker("option", "minDate", value);
};
function updateDateTime_to(value){
$("#datetime_from").datetimepicker("option", "maxDate", value);
};

事实上，动态转移到值传递正确，但 minDate 和 maxDate 的变化不会发生....

错误是什么以及如何解决？

模拟https://jsfiddle.net/drno/ahvLcexq/

在 datetime_from 中更改时间 - C

在此处输入图像描述

datetime_to 中的 minData 正在发生变化

在此处输入图像描述

但是它应该将 datetime_to 中的最小时间和日期选择字段移动到 ON，但它不会移动

在此处输入图像描述

javascript
Martin Hope
Nikolay Baranenko
Asked: 2020-05-16 15:02:03 +0800 CST
  • 1

你好。

我正在尝试在创建表单时为选择元素添加选项属性

<script type="text/javascript" src="resources/js/jquery-2.2.3.min.js"></script>
    <script type="text/javascript" src="resources/js/bootstrap.js"></script>
    <script type="text/javascript" src="resources/js/bootstrap-select.min.js"></script>

<select id="main_selectpicker" class="selectpicker  show-tick form-control"  data-live-search="true" data-size="15"/>

像这样试过

<script type="text/javascript">
    $(function(){
$.getJSON('Forward?URL=items.jsp', function (jsondata) {
...
                var main_selectpicker = document.getElementById("main_selectpicker");
                var option = document.createElement("option");
                option.setAttribute("value", jsondata.items[i].name);
                option.text = jsondata.items[i].name;
                main_selectpicker.appendChild(option);
...
    });
</script>

像这样

<script type="text/javascript">
    $(function(){
$.getJSON('Forward?URL=items.jsp', function (jsondata) {
...
$('#main_selectpicker').append('<option value="'+jsondata.items[i].name+'">'+jsondata.imtes[i].name+'</option>');
...
    });
</script>

值不会出现在 main_selectpicker 元素上

如果从所需的表单元素中删除选择器类的名称，则会出现选项。但是我需要这个分类，如何解决这个问题？

javascript
Martin Hope
Nikolay Baranenko
Asked: 2020-12-17 16:56:36 +0800 CST
  • 1

你好。

Ubuntu 16.10下安装Hadoop

Hadoop 3.0.0-alpha1
Source code repository https://git-wip-us.apache.org/repos/asf/hadoop.git -r a990d2ebcd6de5d7dc2d3684930759b0f0ea4dc3
Compiled by andrew on 2016-08-30T07:02Z
Compiled with protoc 2.5.0
From source with checksum f3a9644139eac17acbb91bfce7f68e2
This command was run using /home/hduser/hadoop/share/hadoop/common/hadoop-common-3.0.0-alpha1.jar

安装Hive 2.1.1后

#Hive environment
export HIVE_HOME=/home/hduser/hive
export PATH=$PATH:$HIVE_HOME/bin
export CLASSPATH=$CLASSPATH:/home/hduser/Hadoop/lib/*:.
export CLASSPATH=$CLASSPATH:/home/hduser/hive/lib/*:.

hive-env.sh

export HADOOP_HOME=/home/hduser/hadoop

和db-derby-10.13.1.1

#Derby environment
export DERBY_HOME=/home/hduser/derby
export PATH=$PATH:$DERBY_HOME/bin
export CLASSPATH=$CLASSPATH:$DERBY_HOME/lib/derby.jar:$DERBY_HOME/lib/derbytools.jar

hive-site.xml 元存储配置

  <property>
    <name>javax.jdo.option.ConnectionURL</name>
    <value>jdbc:derby://localhost:1527/metastore_db;create=true </value>
    <description>
jdbc:derby:;databaseName=metastore_db;create=true
      JDBC connect string for a JDBC metastore.
      To use SSL to encrypt/authenticate the connection, provide database-specific SSL flag in the connection URL.
      For example, jdbc:postgresql://myhost/db?ssl=true for postgres database.
    </description>
  </property>

当我尝试运行配置单元时出现错误

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/home/hduser/hive/lib/log4j-slf4j-impl-2.4.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/hduser/hadoop/share/hadoop/common/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory]

Logging initialized using configuration in jar:file:/home/hduser/hive/lib/hive-common-2.1.1.jar!/hive-log4j2.properties Async: true
Exception in thread "main" java.lang.RuntimeException: org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient
        at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:591)
        at org.apache.hadoop.hive.ql.session.SessionState.beginStart(SessionState.java:531)
        at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:705)
        at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:641)
        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.apache.hadoop.util.RunJar.run(RunJar.java:239)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:153)
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient
        at org.apache.hadoop.hive.ql.metadata.Hive.registerAllFunctionsOnce(Hive.java:226)
        at org.apache.hadoop.hive.ql.metadata.Hive.<init>(Hive.java:366)
        at org.apache.hadoop.hive.ql.metadata.Hive.create(Hive.java:310)
        at org.apache.hadoop.hive.ql.metadata.Hive.getInternal(Hive.java:290)
        at org.apache.hadoop.hive.ql.metadata.Hive.get(Hive.java:266)
        at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:558)
        ... 9 more
Caused by: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient
        at org.apache.hadoop.hive.metastore.MetaStoreUtils.newInstance(MetaStoreUtils.java:1654)
        at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.<init>(RetryingMetaStoreClient.java:80)
        at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:130)
        at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:101)
        at org.apache.hadoop.hive.ql.metadata.Hive.createMetaStoreClient(Hive.java:3367)
        at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:3406)
        at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:3386)
        at org.apache.hadoop.hive.ql.metadata.Hive.getAllFunctions(Hive.java:3640)
        at org.apache.hadoop.hive.ql.metadata.Hive.reloadFunctions(Hive.java:236)
        at org.apache.hadoop.hive.ql.metadata.Hive.registerAllFunctionsOnce(Hive.java:221)
        ... 14 more
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at org.apache.hadoop.hive.metastore.MetaStoreUtils.newInstance(MetaStoreUtils.java:1652)
        ... 23 more
Caused by: java.lang.IllegalArgumentException: Unrecognized Hadoop major version number: 3.0.0-alpha1
        at org.apache.hadoop.hive.shims.ShimLoader.getMajorVersion(ShimLoader.java:169)
        at org.apache.hadoop.hive.shims.ShimLoader.loadShims(ShimLoader.java:136)
        at org.apache.hadoop.hive.shims.ShimLoader.getHadoopShims(ShimLoader.java:95)
        at org.apache.hadoop.hive.metastore.ObjectStore.getDataSourceProps(ObjectStore.java:476)
        at org.apache.hadoop.hive.metastore.ObjectStore.setConf(ObjectStore.java:278)
        at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:76)
        at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:136)
        at org.apache.hadoop.hive.metastore.RawStoreProxy.<init>(RawStoreProxy.java:58)
        at org.apache.hadoop.hive.metastore.RawStoreProxy.getProxy(RawStoreProxy.java:67)
        at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.newRawStore(HiveMetaStore.java:599)
        at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.getMS(HiveMetaStore.java:564)
        at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.createDefaultDB(HiveMetaStore.java:626)
        at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.init(HiveMetaStore.java:416)
        at org.apache.hadoop.hive.metastore.RetryingHMSHandler.<init>(RetryingHMSHandler.java:78)
        at org.apache.hadoop.hive.metastore.RetryingHMSHandler.getProxy(RetryingHMSHandler.java:84)
        at org.apache.hadoop.hive.metastore.HiveMetaStore.newRetryingHMSHandler(HiveMetaStore.java:6490)
        at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.<init>(HiveMetaStoreClient.java:238)
        at org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient.<init>(SessionHiveMetaStoreClient.java:70)
        ... 28 more

哪个版本的 hive (derby) 可以与 Hadoop 3.0.0 一起使用。或者这是其他方面的问题？有哪些可能的解决方案？

hadoop
Martin Hope
Nikolay Baranenko
Asked: 2020-12-01 17:37:39 +0800 CST
  • 0

你好。

我正在为 KPI 图表准备一个数据数组

数据准备功能

function culcJson() {
            var jsonObj = ${json_text};
            var newJSON=[];
var KPI=[];
                var jsonResult = [];
                var a = 0;
                do {
                    var value=jsonObj.SucceededCount[a].SucceededCount_MEAS_VALUE/(jsonObj.SucceededCount[a].SucceededCount_MEAS_VALUE+jsonObj.FailedCount[a].FailedCount_MEAS_VALUE)*100;
                    KPI.push(value);
                    a += 1;
                } while (a < jsonObj.FailedCount.length)
                return KPI;
            }

对于我使用的图形部分

$(function () {
                var KPI=[];
                var jsonObj = ${json_text};
                if (jsonObj!=null){KPI=culcJson();}

                $('#container4').highcharts({
                    chart: {
                        zoomType: 'x'
                    },
                    title: {
                        text: '${TITLE}'
                    },
                    xAxis: {
                        categories: [<c:forEach var="row" items="${SCRIPT_FailedCount.rows}">"${row.DATE__CURRENT__CHECK}",</c:forEach>]
                    },
                    yAxis: {
                        title: {
                            text: ''
                        }
                    },
                    plotOptions: {
                        area: {
                            fillColor: {
                                linearGradient: { x1: 0, y1: 0, x2: 0, y2: 1},
                                stops: [
                                    [0, Highcharts.getOptions().colors[0]],
                                    [1, Highcharts.Color(Highcharts.getOptions().colors[0]).setOpacity(0).get('rgba')]
                                ]
                            },
                            marker: {
                                radius: 2
                            },
                            lineWidth: 1,
                            states: {
                                hover: {
                                    lineWidth: 1
                                }
                            },
                            threshold: null
                        }
                    },

                    series: [
                        {
                            name: 'KPI',
                            data: KPI
                        }
                    ]
                });
            });

如果你保持原样，那么一切都很好。显示了图形，但我想将 KPI 值的小数位数减少到 2。简单固定(2)

KPI.push(value.toFixed(2));

之后，图形不再显示。

控制台中没有错误。

可能是什么问题以及如何解决？

javascript
Martin Hope
Nikolay Baranenko
Asked: 2020-10-27 17:08:07 +0800 CST
  • 0

你好。

我有一个示例 SOAP 请求

         <?xml version="1.0" encoding="UTF-8" ?>
         <SOAP:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
         <SOAP:Body>
         <GetParameter xmlns="http://examples/2001">
		 <request>
         <MonCode xmlns="http://newsite/mon">Latency</MonCode>
		 <TimeFrom xmlns="http://newsite/mon">2016-10-26T11:00</TimeFrom>
		 <TimeTo xmlns="http://newsite/mon">2016-10-26T12:00</TimeTo>
         </request>
		 </GetParameter>
         </SOAP:Body>
         </SOAP:Envelope>

使用 SAAJ API 在 JAVA 中形成 SOAP 请求

以下代码

           MessageFactory messageFactory = MessageFactory.newInstance();
    SOAPMessage message = messageFactory.createMessage();
    SOAPPart soapPart = message.getSOAPPart();
    SOAPEnvelope envelope = soapPart.getEnvelope();
    envelope.addNamespaceDeclaration("xsd", "http://www.w3.org/2001/XMLSchema");
    envelope.addNamespaceDeclaration("xsi", "http://www.w3.org/2001/XMLSchema-instance");
    envelope.addNamespaceDeclaration("soap", "http://schemas.xmlsoap.org/soap/envelop/");

    SOAPBody body = message.getSOAPBody();
    SOAPElement bodyElement = body.addChildElement("GetParameter");
    bodyElement.setAttribute("xmlns", "http://examples/2001");
    bodyElement = body.addChildElement("request");
    SOAPElement paramsElement = bodyElement.addChildElement("MonCode");
    paramsElement.setAttribute("xmlns", "http://newsite/mon");
    paramsElement.addTextNode("Latency");
    paramsElement = bodyElement.addChildElement("TimeFrom");
    paramsElement.setAttribute("xmlns", "http://newsite/mon");
    paramsElement.addTextNode("2016-10-26T11:00");
    paramsElement = bodyElement.addChildElement("TimeTo");
    paramsElement.setAttribute("xmlns", "http://newsite/mon");
    paramsElement.addTextNode("2016-10-26T12:00");

结果我收到这样的 SOAP 请求

<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:soap="http://schemas.xmlsoap.org/soap/envelop/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><SOAP-ENV:Header/>
  <SOAP-ENV:Body>
    <GetParameter xmlns=""/>
    <request>
      <MonCode xmlns="">Latency</MonCode>
      <TimeFrom xmlns="">2016-10-26T11:00</TimeFrom>
      <TimeTo xmlns="">2016-10-26T12:00</TimeTo>
    </request>
  </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

一切都很好，但是属性“ http://examples/2001 ”“ http://newsite/mon ”的值在某处消失了。

我的错误是什么以及如何解决这个问题？

java
Martin Hope
Nikolay Baranenko
Asked: 2020-09-26 03:30:04 +0800 CST
  • 0

你好。

这种类型的 JSON 是从文件中加载的

{  
  "from_excel":[  
    {  
      "solution":"Fisrt",
      "num":"1"
    },
    {  
      "solution":"Second",
      "num":"2"
    },
    {  
      "solution":"third",
      "num":"3"
    }
  ]
}

我正在尝试使用org.json.simple.*库以这种方式在 Java 中解析这个 JSON

Object obj = parser.parse(new FileReader("E:\\json.txt"));

        JSONObject jsonObject = (JSONObject) obj;

        out.println(jsonObject.get("from_excel"));

        JSONObject obj_new = (JSONObject) jsonObject.get("from_excel");

        JSONArray solution = (JSONArray) obj_new.get("solution");

        Iterator iterator = solution.iterator();
        while (iterator.hasNext()) {
            out.println(iterator.next());
        }

但我在某处犯了一个错误......

这部分代码有效

Object obj = parser.parse(new FileReader("E:\\json.txt"));

        JSONObject jsonObject = (JSONObject) obj;

        out.println(jsonObject.get("from_excel"));

如何使用此库正确解析此 JSON（使用它不是教条，我已准备好考虑任何其他工作选项）？

java
Martin Hope
Nikolay Baranenko
Asked: 2020-09-02 03:09:59 +0800 CST
  • 0

你好。

决定第一次尝试 custon taglib

java类

包 EN.Tags.Examples；

        导入 javax.servlet.jsp.tagext.*;
        导入 javax.servlet.jsp.*；
        导入java.io.*；

公共类 CustomAttribute 扩展 SimpleTagSupport {

    私人字符串消息；

    public void setMessage(String msg) {
        this.message = 味精；
    }

    StringWriter sw = new StringWriter();

    公共无效 doTag()
            抛出 JspException、IOException
    {
        如果（消息！=空）{
          /* 使用来自属性的消息 */
            JspWriter out = getJspContext().getOut();
            out.println("第一个自定义标签："+ message );
        }
        别的 {
          /* 使用正文中的消息 */
            getJspBody().invoke(sw);
            getJspContext().getOut().println(sw.toString());
        }
    }

}

custom_tag_attribute.tld 位于 WEB-INF/jstl/custom_tag_attribute.tld

<?xml version="1.0" encoding="UTF-8" ?>

<taglib xmlns="http://java.sun.com/xml/ns/j2ee"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd"
        version="2.0">

    <description>JSTL 1.1 core library</description>
    <display-name>JSTL core</display-name>
    <tlib-version>1.1</tlib-version>
    <short-name>CustomAttribute</short-name>


    <tag>
        <name>Hello</name>
        <tag-class>RU.Tags.Examples.CustomAttribute</tag-class>
        <body-content>scriptless</body-content>
        <attribute>
            <name>message</name>
        </attribute>
    </tag>

</taglib>

在 JSP 中调用自定义标签库

examples.jsp 位于项目的根文件夹newproject/examples.jsp

<%@ taglib uri="/WEB-INF/jstl/custom_tag_attribute.tld" prefix="CustomAttribute" %>

<CustomAttribute:Hello message="This is custom tag" />

一切都会好起来的，但是如果项目在根文件夹中工作，则此选项有效，例如 localhost: 8000/examples.jsp

如果以这种方式访问 ​​ http://localhost/newproject/examples.jsp ，则会出现错误

HTTP 状态 500 - 无法找到 URI 的标签库“CustomAttribute”：/WEB-INF/jstl/custom_tag_attribute.tld

类型异常报告

消息无法为 URI 找到标签库“CustomAttribute”：/WEB-INF/jstl/custom_tag_attribute.tld

说明 服务器遇到内部错误，无法完成此请求。

例外

org.apache.jasper.JasperException：无法找到 URI 的标签库“CustomAttribute”：/WEB-INF/jstl/custom_tag_attribute.tld

如何消除这个错误？

java
Martin Hope
Nikolay Baranenko
Asked: 2020-08-29 20:48:05 +0800 CST
  • 1

你好。

需要在仅通过代理具有 Internet 连接的服务器上下载适用于 python(3.5)/OS Windows 的软件包。我尝试使用此选项，但没有用，因为。pip 不能正确识别密码，它有一个特殊的功能是 # 符号。

“C:\Program Files\Python35\scripts\pip.exe” –-proxy http://user_proxy:pwd#123@proxy.new.ru:1111 install requests

在密码中转义 # 的正确方法是什么？

p.s. 我也试过这个

    “C:\Program Files\Python35\scripts\pip.exe” --proxy "http://user_proxy:pwd#123@proxy.new.ru:1111" 安装请求
    “C:\Program Files\Python35\scripts\pip.exe” --proxy http://"user_proxy:pwd#123"@proxy.new.ru:1111 安装请求
    “C:\Program Files\Python35\scripts\pip.exe” --proxy http://user_proxy:"pwd#123"@proxy.new.ru:1111 安装请求

结果是否定的:-(

proxy
Martin Hope
Nikolay Baranenko
Asked: 2020-08-10 18:48:12 +0800 CST
  • 2

你好。

我正在尝试从 JSP 传递 JSON。

    <c:set var="json_text">
        [{"TIME_STAMP": "2016-07-25 02:30:22", "COUNTER": "COUNT_ALL", "VALUE": 635 }, { "TIME_STAMP": "2016-07-25 02:30:22", "COUNTER": "COUNT_BAD", "VALUE": 1 }, { "TIME_STAMP": "2016-07-25 02:30:22", "COUNTER": "QUALITY", "VALUE": 99.84 }, { "TIME_STAMP": "2016-07-25 02:31:22", "COUNTER": "COUNT_ALL", "VALUE": 642 }, { "TIME_STAMP": "2016-07-25 02:31:22", "COUNTER": "COUNT_BAD", "VALUE": 1 }, { "TIME_STAMP": "2016-07-25 02:31:22", "COUNTER": "QUALITY", "VALUE": 99.84 }]
        </c:set>
    
     <script type="text/javascript">
    var jsonString='<c:out value="${json_text}"/>';
    var jsonObj = JSON.parse(jsonString);
    </script>

重现 未捕获的语法错误：位置 2 的 JSON 中的意外标记 &

但是，如果您将整个内容直接复制到 Java 脚本中，那么一切正常。

    <script type="text/javascript">
    var jsonString='[{"TIME_STAMP": "2016-07-25 02:30:22", "COUNTER": "COUNT_ALL", "VALUE": 635 }, { "TIME_STAMP": "2016-07-25 02:30:22", "COUNTER": "COUNT_BAD", "VALUE": 1 }, { "TIME_STAMP": "2016-07-25 02:30:22", "COUNTER": "QUALITY", "VALUE": 99.84 }, { "TIME_STAMP": "2016-07-25 02:31:22", "COUNTER": "COUNT_ALL", "VALUE": 642 }, { "TIME_STAMP": "2016-07-25 02:31:22", "COUNTER": "COUNT_BAD", "VALUE": 1 }, { "TIME_STAMP": "2016-07-25 02:31:22", "COUNTER": "QUALITY", "VALUE": 99.84 }]';
    var jsonObj = JSON.parse(jsonString);
    </script>

告诉我有什么问题。

ps首先想到的是in var jsonString=''; 只传递了一个字符串，但以这种方式检查

<script type="text/javascript">
var JSONFromJSTL='<c:out value="${json_text}"/>';
jsonResult.push("Вывод JSON="+JSONFromJSTL);
result_json.innerHTML = jsonResult.join('<br>');
  </script>

在

<div id="result_json"></div>

这个结果被发送

JSON 输出= [{"TIME_STAMP": "2016-07-25 02:30:22", "COUNTER": "COUNT_ALL", "VALUE": 635 }, { "TIME_STAMP": "2016-07-25 02: 30:22", "COUNTER": "COUNT_BAD", "VALUE": 1 }, { "TIME_STAMP": "2016-07-25 02:30:22", "COUNTER": "QUALITY", "VALUE": 99.84 }, { "TIME_STAMP": "2016-07-25 02:31:22", "COUNTER": "COUNT_ALL", "VALUE": 642 }, { "TIME_STAMP": "2016-07-25 02:31 :22", "COUNTER": "COUNT_BAD", "VALUE": 1 }, { "TIME_STAMP": "2016-07-25 02:31:22", "COUNTER": "QUALITY", "VALUE": 99.84 }]

那些。正是需要什么。

javascript
Martin Hope
Nikolay Baranenko
Asked: 2020-07-28 15:34:13 +0800 CST
  • 1

你好。

需要将有关数据库连接的信息传输到单独的文件中。我尝试使用此选项，但我仍然无法理解文件的物理位置db.properties

属性 prop = new Properties();
InputStream inputStream = FetchData.class.getClassLoader().getResourceAsStream("/db.properties");
prop.load(inputStream);
Stringdriver = prop.getProperty("驱动程序");
字符串 url = prop.getProperty("url");
String user = prop.getProperty("用户");
String password = prop.getProperty("密码");

试图张贴/web-inf/classes/db.properties 但找不到它。试图指定一个绝对路径 - 结果也是负面的。

他应该在哪里？

java