JNA Error

int hr = m_pObjectKey.CreateInstance(__uuidof(KeyObject));

해당 구문에서

CreateInstance 의 리턴 값이

%x : 80040154

%d : -2147221164

형태로 계속 리턴되는 경우

80040154 오류

https://social.msdn.microsoft.com/Forums/vstudio/ko-KR/03d5a6bd-e256-492a-a72b-f011b971834e/80040154-?forum=visualcsharpko

쉽게 말하면 해당 라이브러리의 DLL 파일의 경로를 찾을수 없어서

객체를 만들 수 없다는 이야기이다.

1) regasm, regsrv 를 이용하여 재등록을 시도해 보고,

그래도 안된다면

2) regasm 의 경우 /codebase 옵션을 사용 해 보라

Java CreateProcess Error=2 AccessControlException 

Java 1.5 JRE 에서는 IOException CreatProcess Error=2 로 발생하고

Java 1.8 JRE 에서는 AccessControlException access denied java.io.FilePermission 으로 발생한다.

둘다, Java Permission 문제

Jre 경로에서

Jre*.*.*\lib\sercurity\java.policy 파일에

grant codeBase * {

*

}

grant {

        permission java.security.AllPermission; 를 추가하면 된다.

*

*

*

}

Java Applet 설정

Java Applet 구동 시

Apache 서버에

AmitApplet.java 를 AmitJavaApplication.jar 로 Export(Java->JAR file) 한다.

package test.Amit;

import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Map;

import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class AmitApplet extends JApplet {

	public void init() {

		try {
			for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
				if ("Nimbus".equals(info.getName())) {
					javax.swing.UIManager.setLookAndFeel(info.getClassName());
					break;
				}
			}
		} catch (ClassNotFoundException ex) {
			java.util.logging.Logger.getLogger(AmitApplet.class.getName()).log(java.util.logging.Level.SEVERE, null,
					ex);
		} catch (InstantiationException ex) {
			java.util.logging.Logger.getLogger(AmitApplet.class.getName()).log(java.util.logging.Level.SEVERE, null,
					ex);
		} catch (IllegalAccessException ex) {
			java.util.logging.Logger.getLogger(AmitApplet.class.getName()).log(java.util.logging.Level.SEVERE, null,
					ex);
		} catch (javax.swing.UnsupportedLookAndFeelException ex) {
			java.util.logging.Logger.getLogger(AmitApplet.class.getName()).log(java.util.logging.Level.SEVERE, null,
					ex);
		}
		// 

		try {
			java.awt.EventQueue.invokeAndWait(new Runnable() {
				public void run() {
					initComponents();
				}
			});
		} catch (Exception ex) {
			ex.printStackTrace();
		}
	}

	private void initComponents() {

		// String defaultCmd = "\\\\192.168.10.17\\tt\\notepad.exe";
		final String defaultCmd = "notepad.exe test.jsp";
		commandTextField = new JTextField();
		logTextArea = new JTextArea();
		runtimeButton = new JButton("getRuntime");
		processBuilderButton = new JButton("processBuilder");
		JPanel topPanel = new JPanel();

		setLayout(new BorderLayout());

		topPanel.setLayout(new GridLayout(4, 1));
		topPanel.add(new JLabel("Command"));
		topPanel.add(commandTextField);
		topPanel.add(runtimeButton);
		topPanel.add(processBuilderButton);
		add(BorderLayout.NORTH, topPanel);
		add(BorderLayout.CENTER, logTextArea);

		runtimeButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				// TODO Auto-generated method stub
				if (commandTextField.getText().length() == 0) {
					try {
						Runtime.getRuntime().exec(defaultCmd);
					} catch (Exception e1) {
						// TODO Auto-generated catch block
						logTextArea.setText(e1.getMessage());
						e1.printStackTrace();
					}
				} else {
					try {
						Runtime.getRuntime().exec(commandTextField.getText());
					} catch (Exception e1) {
						// TODO Auto-generated catch block
						logTextArea.setText(e1.getMessage());
						e1.printStackTrace();
					}
				}
			}
		});
		processBuilderButton.addActionListener(new ActionListener() {
			public synchronized void actionPerformed(ActionEvent e) {
				// TODO Auto-generated method stub
				if (commandTextField.getText().length() == 0) {

					try {
						ProcessBuilder launcher = new ProcessBuilder();
						Map environment = launcher.environment();
						launcher.redirectErrorStream(true);
						launcher.directory(new File("\\\\192.168.10.17\\tt\\"));

						// environment.put("test.jsp", defaultCmd);
						launcher.command("notepad.exe");
						Process p = launcher.start(); // And launch a new
														// process

					} catch (Exception e2) {
						logTextArea.setText(e2.getMessage());
						e2.printStackTrace();
					}
				} else {
					try {
						ProcessBuilder pb = new ProcessBuilder(commandTextField.getText());
						pb.start();

					} catch (Exception e1) {
						// TODO Auto-generated catch block
						logTextArea.setText(e1.getMessage());
						e1.printStackTrace();
					}
				}
			}
		});
	}

	@SuppressWarnings("unchecked")
	public void launchScript(String cmd, String args) {
		try {
			System.out.println("args value : = " + args);
			System.out.println("cmd value : = " + cmd);
			System.out.println("Full command:  = " + cmd + " " + args);
			if (cmd != null && !cmd.trim().equals("")) {
				if (args == null || args.trim().equals("")) {
					final String tempcmd = cmd;
					AccessController.doPrivileged(new PrivilegedAction() {
						public Object run() {
							try {
								Runtime.getRuntime().exec(tempcmd);
							} catch (Exception e) {
								System.out.println("Caught exception in privileged block, Exception:" + e.toString());
							}
							return null; // nothing to return
						}
					});
					System.out.println(cmd);
				} else {
					final String tempargs = args;
					final String tempcmd1 = cmd;
					AccessController.doPrivileged(new PrivilegedAction() {
						public Object run() {
							try {
								Runtime.getRuntime().exec(tempcmd1 + " " + tempargs);
							} catch (Exception e) {
								System.out.println("Caught exception in privileged block, Exception:" + e.toString());
							}
							return null; // nothing to return
						}
					});
					System.out.println(cmd + " " + args);
				}
			} else {
				System.out.println("execCmd parameter is null or empty");
			}
		} catch (Exception e) {
			System.out.println("Error executing command --> " + cmd + " (" + args + ")");
			System.out.println(e);
		}
	}

	JButton runtimeButton;
	JButton processBuilderButton;
	JTextField commandTextField;
	JTextArea logTextArea;
}

test.jsp 를 준비한다.

<%@page contentType="text/html" pageEncoding="UTF-8"%>

<!DOCTYPE html>

<html>

    <head>

        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

        <title>My first WebApplication using NetBeansIDE</title>

    </head>

    <body>

        <h1>Hello World!</h1>

        <br />

        <p>WebApplication using NetBeansIDE...</p>

        <!-- Embedding Applet -->

<applet code="test.Amit.AmitApplet" archive="AmitJavaApplication.jar" width="400" height="350"></applet>

    </body>

</html>

Apache 는 Apache 비트에 맞는 Java 를 연결시키고

Applet 은 32비트에서 돌아간다

(컴퓨터에 32비트 Java JRE가 설치되어 있어야한다.)

Apache ROOT 폴더의 구조

Config

Java SocketServer control Image, DBConnect, String

package com.tistory.tansanc;

import java.awt.image.BufferedImage;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.ArrayList;

import javax.imageio.ImageIO;

class DBConnect {
	ResultSet rs = null;
	Connection conn = null;
	Statement stmt = null;
	public DBConnect() {
		try {
			String url = "jdbc:sqlserver://192.168.10.17:1433;DatabaseName=MSSQLSERVER";
			
			Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
			conn = DriverManager.getConnection(url, "sa", "1234");
			stmt = conn.createStatement();
			

		} catch (Exception e) {

		}
	}

	public void finalize() {
		try {
			rs.close();
			stmt.close();
			conn.close();
		} catch (Exception e) {

		}
	}
}

class PerClientThread extends Thread {
	Socket s;
	static ArrayList socketArray = new ArrayList();
	static DBConnect dbc;
	
	public PerClientThread()
	{
		
	}
	@Override
	public void run() {
		// TODO Auto-generated method stub

		socketArray.add(s);
		BufferedReader br;

		
		try {
			br = new BufferedReader(new InputStreamReader(s.getInputStream()));
			String temp;
			while ((temp = br.readLine()) != null) {
				// DB Query
				if (temp.startsWith("select")) {
					
					try {
						dbc.rs = dbc.stmt.executeQuery("SELECT * FROM [dbo].[TESTDB]");

						while (dbc.rs.next()) {
							String field1 = dbc.rs.getString("Date");
							String field2 = dbc.rs.getString("FileName");
							System.out.println(field1);
							System.out.println(field2);

							java.sql.Blob blb = dbc.rs.getBlob("Image");
							byte[] imagebytes = blb.getBytes(0, (int) blb.length());
							BufferedImage theImage = ImageIO.read(new ByteArrayInputStream(imagebytes));

						}
					} catch (Exception e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
					temp = "SQL:" + temp;
					System.out.println(temp);
				}
				// Arduino
				else if (temp.startsWith("insert"))
				{
					
				}
				// Arduino
				else if (temp.startsWith("image"))
				{

			        int size = Integer.parseInt(br.readLine());
			        
			        DataInputStream inputStream = new DataInputStream(s.getInputStream());
			        
			        byte[] imageAr = new byte[size];
			        inputStream.read(imageAr, 0, size);

			        BufferedImage image = ImageIO.read(new ByteArrayInputStream(imageAr));

			        System.out.println("Received " + image.getHeight() + "x" + image.getWidth() + ": " + System.currentTimeMillis());
			        ImageIO.write(image, "png", new File("C:\\test2.png"));


				}
				// Arduino
				else if (temp.startsWith("to"))
				{
					
				}
				System.out.print(s.getInetAddress() + " : ");
				System.out.println(temp);
				for (int i = 0; i < socketArray.size(); i++) {
					PrintWriter os = new PrintWriter(socketArray.get(i).getOutputStream(), true);
					os.print(s.getInetAddress() + " : ");
					os.println(temp);
				}
			}

		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		super.run();
	}
}

public class Server {
	public static void main(String[] args) throws Exception {
 
		System.out.println("Server Side");
		ServerSocket ss = new ServerSocket(33333);
		Socket s;
		while (true) {
			s = ss.accept();
			PerClientThread pct = new PerClientThread();
			pct.s = s;
			pct.dbc = new DBConnect();
			pct.start();
		}

	}
}

package com.tistory.tansanc;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;

import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JTextArea;
import javax.swing.JTextField;

class MyFrame extends JFrame {
	public static JTextArea textArea;
	JTextField textField;
	PrintWriter out;
	Socket s;

	public MyFrame() {
		textArea = new JTextArea();
		textField = new JTextField();
		add(BorderLayout.CENTER, textArea);
		add(BorderLayout.SOUTH, textField);
		textField.addActionListener(new FieldListener());
		setSize(300, 200);
		setTitle("채팅프로그램 Client");
		setVisible(true);
		// GUI를 설계한다.
	}

	class FieldListener implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {
			// TODO Auto-generated method stub
			if (textField.getText().compareTo("image") == 0) {

				BufferedImage image;
				ByteArrayOutputStream byteArrayOutputStream = null;
				DataOutputStream os = null;
				try {
					image = ImageIO.read(new File("C:\\test.png"));
					byteArrayOutputStream = new ByteArrayOutputStream();
					ImageIO.write(image, "png", byteArrayOutputStream);
					os = new DataOutputStream(s.getOutputStream());
				} catch (Exception e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
				}
				
				try {
					int size = byteArrayOutputStream.size();
					out.println("image");
					out.println(size);
					os.write(byteArrayOutputStream.toByteArray());
					os.flush();
				} catch (Exception e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
				}

			} else {
				out.println(textField.getText());
				textField.setText("");
			}
			// 메세지 보내기
		}
	}
}

class SendThread extends Thread {
	PrintWriter out;

	public SendThread(PrintWriter out) {
		this.out = out;
	}

	@Override
	public void run() {
		// TODO Auto-generated method stub
		super.run();
	}
}

class RecvThread extends Thread {
	BufferedReader in;

	public RecvThread(BufferedReader in) {
		this.in = in;
	}

	@Override
	public void run() {
		String temp;
		try {
			while ((temp = in.readLine()) != null) {

				MyFrame.textArea.setText(MyFrame.textArea.getText() + "\n" + temp);
			}
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}

class ClientModule {
	MyFrame mFrame;
	SendThread mSendThread;
	RecvThread mRecvThread;
	Socket s;

	// 서버에 패킷을 보내는 Thread
	// 서버로부터 패킷을 받는 Thread
	public ClientModule() // 준비
	{

		try {
			s = new Socket("192.168.10.17", 33333);
			PrintWriter out = new PrintWriter(s.getOutputStream(), true);
			BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream()));
			mFrame = new MyFrame(); // GUI 객체
			mFrame.s = s;
			mFrame.out = out;
			mSendThread = new SendThread(out);
			mRecvThread = new RecvThread(in);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	void start() // 시작
	{
		mSendThread.start();
		mRecvThread.start();
	}
}

public class Client {
	public static void main(String[] args) {
		ClientModule cm = new ClientModule();
		// 초기화 작업
		cm.start();
		// Thread.start();
	}
}

Java JNetPcap Library Packet Capture 

pcap File

테스트 환경 : Win7 64bit, Eclipse, Java 1.8

이클립스와

자바는 설치되어있다고 가정합니다.

JNetPcap 라이브러리 다운로드

저는 x84_64

압축을 풀면

jnetpcap.jar, jnetpcap.dll

두 개의 파일이 보입니다.

1. jnetpcap.jar 은 Eclipse 프로젝트에서 참조 할 수 있도록

Package Explorer > Properties > Java Build Path > Libraries > Add JARs 나 Add External JARs 로 추가하여 줍니다.

다운받은 경로보다는

해당 프로젝트 Eclipse Workspace 내에 두는것을 추천합니다.

한글 경로 때문에 안되는 경우도 있습니다,

2. jnetpcap.dll

C:\Windows\System32 경로에 jnetpcap.dll 파일을 복사하여 줍니다.

이제 설정은 끝났습니다.

테스트 코드는 다음과 같습니다.

import java.io.File;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;

import org.jnetpcap.ByteBufferHandler;
import org.jnetpcap.Pcap;
import org.jnetpcap.PcapDumper;
import org.jnetpcap.PcapHeader;
import org.jnetpcap.PcapIf;

public class Test1 {
	public static void main(String[] args) {
		// pcap.loop(x, dumpHandler, dumper); x 개 패킷을
		// String ofile = "tmp-capture-file.cap"; tmp-capture-file.cap 파일로 저장


		List alldevs = new ArrayList(); // Will be filled with
														// NICs
		StringBuilder errbuf = new StringBuilder(); // For any error msgs

		/***************************************************************************
		 * First get a list of devices on this system
		 **************************************************************************/
		int r = Pcap.findAllDevs(alldevs, errbuf);
		if (r == Pcap.NOT_OK || alldevs.isEmpty()) {
			System.err.printf("Can't read list of devices, error is %s\n", errbuf.toString());
			return;
		}
		PcapIf device = alldevs.get(0); // We know we have atleast 1 device

		/***************************************************************************
		 * Second we open up the selected device
		 **************************************************************************/
		int snaplen = 64 * 1024; // Capture all packets, no trucation
		int flags = Pcap.MODE_PROMISCUOUS; // capture all packets
		int timeout = 10 * 1000; // 10 seconds in millis
		Pcap pcap = Pcap.openLive(device.getName(), snaplen, flags, timeout, errbuf);
		if (pcap == null) {
			System.err.printf("Error while opening device for capture: %s\n", errbuf.toString());
			return;
		}

		/***************************************************************************
		 * Third we create a PcapDumper and associate it with the pcap capture
		 ***************************************************************************/
		String ofile = "tmp-capture-file.cap";
		PcapDumper dumper = pcap.dumpOpen(ofile); // output file

		/***************************************************************************
		 * Fouth we create a packet handler which receives packets and tells the
		 * dumper to write those packets to its output file
		 **************************************************************************/
		ByteBufferHandler dumpHandler = new ByteBufferHandler() {

			public void nextPacket(PcapHeader arg0, ByteBuffer arg1, PcapDumper arg2) {
				// TODO Auto-generated method stub
				dumper.dump(arg0, arg1);
			}
		};

		/***************************************************************************
		 * Fifth we enter the loop and tell it to capture 10 packets. We pass in
		 * the dumper created in step 3
		 **************************************************************************/
		pcap.loop(10, dumpHandler, dumper);

		File file = new File(ofile);
		System.out.printf("%s file has %d bytes in it!\n", ofile, file.length());

		/***************************************************************************
		 * Last thing to do is close the dumper and pcap handles
		 **************************************************************************/
		dumper.close(); // Won't be able to delete without explicit close
		pcap.close();

		if (file.exists()) {
			// file.delete(); // Cleanup
		}	
	}
}

log4cxx MFC Client 와 log4j Java Server 연결

MFC Client 는 로그를 파일과 서버로 보내고,

Java Server 는 여러개의 MFC Client 가 보내는 로그를 저장한다.

테스트 환경은

MFC Client 와 Java Server 가 동일 호스트 이다.

MFC Client

log4j.rootLogger=DEBUG, filelog, remoteserver

rootLogger 에 필요한 로그 Appender 를 추가한다.

remoteserver라는 Appender 를 설정한다.

SocketAppender 를 사용하고, localhost:4445 에 연결한다.

# using remoteserver appender

log4j.appender.remoteserver=org.apache.log4j.net.SocketAppender

log4j.appender.remoteserver.remoteHost=localhost

log4j.appender.remoteserver.port=4445

log4j.appender.remoteserver.locationInfo=true

log4j.appender.remoteserver.ReconnectionDelay=10000

Java Server

테스트에서는 

log4j-1.2.17 버전을 사용하였다.

log4j-1.2.17.zip

압축을 푼 후 jar 파일을 Library 로 add 한다.

서버의 설정은 log4j-server.properties

RollingFileAppender 를 사용하여

파일 단위로 Log 를 저장한다.

log4j.rootLogger=DEBUG, file

log4j.appender.file=org.apache.log4j.RollingFileAppender

log4j.appender.file.File=logfile.log

log4j.appender.file.MaxFileSize=1MB

log4j.appender.file.MaxBackupIndex=1

log4j.appender.file.layout=org.apache.log4j.PatternLayout

log4j.appender.file.layout.ConversionPattern=[%d] [%t] [%m]%n

Java Server Code

public class Test

{

public static void main(String[] args) {

        try  

        {  

        String[] arguments = {"4445", "log4j-server.properties"};  

        SimpleSocketServer.main(arguments);  

        }  

        catch (Exception ex)  

        {  

          System.out.println(ex.getMessage());

        }  

}

}

성동구 인근 지역 프로그래밍 과외 합니다.

지역 : 서울 성동구 인근

종목 : 프로그래밍, 정보올림피아드, CCNA, CCNP

경력 : 지도학생) 2013 초등부 정보올림피아드 전국대회 은상 수상

        지도학생) 정보올림피아드 본선 진출 다수

         전) 서울 서울특별시립종합직업전문학교 외부강사

         전) 천안 그린컴퓨터학원 프로그래밍 강사

         전) 한국기술교육대학교 대학원 컴퓨터공학부 박사과정 수료

         전) 청주 그린컴퓨터학원 프로그래밍 강사

         전) 아산소재 대학교 시간강사

         전) 천안소재 대학교 시간강사

         현) 한국기술교육대학교 평생능력개발 이러닝 운영강사

         현) IT기업 연구소 재직중

자세한 문의는

tansanc23@gmail.com 으로 문의해 주세요.

공일공-구구육이-일사일칠

Get client IP, Location, Address using just JavaScript?

{
  "address": "116.12.250.1",
  "country": "SG",
  "stateprov": "Central Singapore",
  "city": "Singapore"
}

$.getJSON('//gd.geobytes.com/GetCityDetails?callback=?', function(data) {
  console.log(JSON.stringify(data, null, 2));
});

{
  "geobytesforwarderfor": "",
  "geobytesremoteip": "116.12.250.1",
  "geobytesipaddress": "116.12.250.1",
  "geobytescertainty": "99",
  "geobytesinternet": "SA",
  "geobytescountry": "Saudi Arabia",
  "geobytesregionlocationcode": "SASH",
  "geobytesregion": "Ash Sharqiyah",
  "geobytescode": "SH",
  "geobyteslocationcode": "SASHJUBA",
  "geobytescity": "Jubail",
  "geobytescityid": "13793",
  "geobytesfqcn": "Jubail, SH, Saudi Arabia",
  "geobyteslatitude": "27.004999",
  "geobyteslongitude": "49.660999",
  "geobytescapital": "Riyadh ",
  "geobytestimezone": "+03:00",
  "geobytesnationalitysingular": "Saudi Arabian ",
  "geobytespopulation": "22757092",
  "geobytesnationalityplural": "Saudis",
  "geobytesmapreference": "Middle East ",
  "geobytescurrency": "Saudi Riyal",
  "geobytescurrencycode": "SAR",
  "geobytestitle": "Saudi Arabia"
}

$.getJSON('//www.geoplugin.net/json.gp?jsoncallback=?', function(data) {
  console.log(JSON.stringify(data, null, 2));
});

{
  "geoplugin_request": "116.12.250.1",
  "geoplugin_status": 200,
  "geoplugin_credit": "Some of the returned data includes GeoLite data created by MaxMind, available from <a href=\\'http://www.maxmind.com\\'>http://www.maxmind.com</a>.",
  "geoplugin_city": "Singapore",
  "geoplugin_region": "Singapore (general)",
  "geoplugin_areaCode": "0",
  "geoplugin_dmaCode": "0",
  "geoplugin_countryCode": "SG",
  "geoplugin_countryName": "Singapore",
  "geoplugin_continentCode": "AS",
  "geoplugin_latitude": "1.2931",
  "geoplugin_longitude": "103.855797",
  "geoplugin_regionCode": "00",
  "geoplugin_regionName": "Singapore (general)",
  "geoplugin_currencyCode": "SGD",
  "geoplugin_currencySymbol": "&#36;",
  "geoplugin_currencySymbol_UTF8": "$",
  "geoplugin_currencyConverter": 1.4239
}

IP Address: 116.12.250.1
Country: SG
State: N/A
City: Singapore
Latitude: 1.293100
Longitude: 103.855797

$.getJSON('//ip-api.com/json?callback=?', function(data) {
  console.log(JSON.stringify(data, null, 2));
});

{
  "as": "AS3758 SingNet",
  "city": "Singapore",
  "country": "Singapore",
  "countryCode": "SG",
  "isp": "SingNet Pte Ltd",
  "lat": 1.2931,
  "lon": 103.8558,
  "org": "Singapore Telecommunications",
  "query": "116.12.250.1",
  "region": "",
  "regionName": "",
  "status": "success",
  "timezone": "Asia/Singapore",
  "zip": ""
}

$.getJSON('//api.ipify.org?format=jsonp&callback=?', function(data) {
  console.log(JSON.stringify(data, null, 2));
});

{
  "ip": "116.12.250.1"
}

$.getJSON('//ipinfo.io/', function(data) {
  console.log(JSON.stringify(data, null, 2));
});

{
  "ip": "116.12.250.1",
  "hostname": "No Hostname",
  "city": "Singapore",
  "region": "",
  "country": "SG",
  "loc": "1.2931,103.8558",
  "org": "AS3758 SingNet"
}

$.getJSON('//api.ipinfodb.com/v3/ip-city/?key=<your_api_key>&format=json&callback=?', function(data) {
  console.log(JSON.stringify(data, null, 2));
});

{
  "statusCode": "OK",
  "statusMessage": "",
  "ipAddress": "116.12.250.1",
  "countryCode": "SG",
  "countryName": "Singapore",
  "regionName": "Singapore",
  "cityName": "Singapore",
  "zipCode": "048941",
  "latitude": "1.28967",
  "longitude": "103.85",
  "timeZone": "+08:00"
}

{
  "site": "http://ip-json.rhcloud.com",
  "city": "Singapore",
  "region_name": null,
  "region": "00",
  "area_code": 0,
  "time_zone": "Asia/Singapore",
  "longitude": 103.85579681396484,
  "metro_code": 0,
  "country_code3": "SGP",
  "latitude": 1.2930999994277954,
  "postal_code": null,
  "dma_code": 0,
  "country_code": "SG",
  "country_name": "Singapore",
  "q": "116.12.250.1"
}

$.getJSON('//jsonip.com/?callback=?', function(data) {
  console.log(JSON.stringify(data, null, 2));
});

{
  "ip": "116.12.250.1",
  "about": "/about",
  "Pro!": "http://getjsonip.com"
}

$.getJSON('//ip.jsontest.com/?callback=?', function(data) {
  console.log(JSON.stringify(data, null, 2));
});

{
  "ip": "116.12.250.1"
}

{
  "remote_address": "116.12.250.1",
  "requested_address": "116.12.250.1",
  "requested_time": "11:25:35 pm",
  "requested_date": "January 31, 2016",
  "CountryCode": "SG",
  "Region": null,
  "Region_Full": "Singapore",
  "City": "Ubi",
  "PostalZip": "96940",
  "TimeZone_Name": "Asia\/Singapore",
  "Latitude": "1.31865",
  "Longitude": "103.894"
}

If you want to use Activex Event in JavaScript 

You commonly use JavaScript Event listener

1.  

<script type="text/javascript" for="ActiveXControl" event="LogOn()"></script>

2.   

var ctrl = document.getElementById("ActiveXControl");

ctrl.attachEvent('LogOn', ActiveXControl_LogOn);

function ActiveXControl_LogOn() {

}

3.   

var ctrl = document.getElementById("ActiveXControl");

ctrl.addEventListener('LogOn', ActiveXControl_LogOn, false);

function ActiveXControl_LogOn() {

}

This way can't use correctly alert method. you can see alert only in debug mode.

I think this situation is have a thread problem.

I suggest other way to use eventhandling

By use timer, This problem can be solved.

// make eventArray 

var eventArray = [];

// if event occured, when you add information to eventArray

eventArray.push(information);

// make Timer

setInterval(function () {

if (eventArray.length > 0) {

var information= eventArray.pop();

alert("information: " + information);

}

}, 100);

This method can be use alert method

C# Class Library use in java (클래스 라이브러리)

Java 에서 C# 클래스 라이브러리를 불러오기

C# 클래스 라이브러리가

namespace ClassLibrary2

{

    // Interface declaration.

    public interface ICalculator

    {

        int Add(int Number1, int Number2);

    };

    public class SimpleCalc : ICalculator

    {

        public int Add(int Number1, int Number2)

        {

            return Number1 + Number2;

        }

    }

}

[assembly: ComVisible(true)]

COM Interop 등록

JACOB 라이브러리를 활용하여 C# DLL 을 불러와 보겠다.

http://danadler.com/jacob/

에 들어가서 기본 라이브러리를 추가한다.

jacob.jar 를 Java Build Path 에 추가한다.

ActiveXComponent xl = new ActiveXComponent("Test.SimpleCalc");

try {

   System.out.println(Dispatch.call(xl, "Add", new Variant(1), new Variant(2)));

} catch (Exception e) {

e.printStackTrace();

}

JACOB 라이브러리는 기본적으로는 ProgID 를 통해 DLL 파일을 불러온다.

위의 C# 클래스 라이브러리는 ProgID 가 없다.

namespace ClassLibrary2

{

    // Interface declaration.

    public interface ICalculator

    {

        int Add(int Number1, int Number2);

    };

    [ProgId("Test.SimpleCalc")]

    public class SimpleCalc : ICalculator

    {

        public int Add(int Number1, int Number2)

        {

            return Number1 + Number2;

        }

    }

}

ProgID 를 추가하여 준다.

그 다음 해당 파일을 regasm 으로 등록한다.

그런 다음 Java 를 실행해 보면

Add 가 정상적으로 작동한다.