Life is but a dream

@Setter
@Getter
@Builder
public class PersonDto  {
     private int age;
     private String name;
}

@NoArgsConstructor
@AllArgsConstructor​

<dependency>
    	<groupId>javax.mail</groupId>
    	<artifactId>javax.mail-api</artifactId>
   	<version>1.6.2</version>
</dependency>
<dependency>
	<groupId>com.sun.mail</groupId>
	<artifactId>javax.mail</artifactId>
	<version>1.6.2</version>
</dependency>

2. 샘플코드 

import java.util.Properties;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class EmailSender {

    // 구글 이메일
    static final String user_email= "XXXXX@gmail.com";
    // 구글 비번
    static final String user_pw = "XXXXX";
    
    static final String smtp_host = "smtp.gmail.com";
    static final int smtp_port = 465;  // TLS : 587, SSL : 465

    public static void Send() throws Exception {
        Properties props = System.getProperties();
        props.put("mail.smtp.host", smtp_host); 
        props.put("mail.smtp.port", smtp_port); 
        props.put("mail.smtp.auth", "true"); 
        props.put("mail.smtp.ssl.enable", "true"); 
        props.put("mail.smtp.ssl.trust", smtp_host);
        
        Session session = Session.getInstance(props,
                new javax.mail.Authenticator() {
                    protected PasswordAuthentication getPasswordAuthentication() {
                        return new PasswordAuthentication(user_email, user_pw);
                    }
                });
        
        try {

            Message message = new MimeMessage(session);
            message.setFrom(new InternetAddress(user_email));

           // 받는 이메일
            message.setRecipients(
                    Message.RecipientType.TO,
                    InternetAddress.parse("XXXXX@gmail.com, XXXXX@naver.com")    
            );
	
	  // 제목
            message.setSubject("테스트 메일입니다."); 
	  
	   // 내용
            message.setText("이것은 테스트 메일입니다. \n\n 잘 갔나요?");

            // 발송
            Transport.send(message);
            
        } catch (MessagingException e) {
            e.printStackTrace();
            System.out.println(e.getMessage());
        }
    }
}

위 코드를 실행했더니 

Application-specific password required

오류가 발생한다.

구글링 해보니 2차인증 설정시 발생하는 오류라고 함

4) 맨밑에 앱 비밀번호 선택

5) 앱 선택 : 메일, 기기 선택 : windows 컴퓨터, 생성 클릭 하면 16자리 비밀번호가 생성된다.

6) 생성된 비밀번호를 user_pw 로 사용하면 메일 잘 발송된다.

끝

Jsoup.connect("/test.json")
  	.ignoreContentType(true)
  	.method(Method.GET)
  	.execute();

혹은 header에 ContentType 을 json이나 xml 로 지정해도 될 듯.

끝.

1. json-simple  의존성 추가

<dependency>
    <groupId>com.googlecode.json-simple</groupId>
    <artifactId>json-simple</artifactId>
    <version>1.1</version>
</dependency>

String jsonText = "{ \"test\" : \"1234\" }";
JSONParser parser = new JSONParser();
Object obj = parser.parse(jsonText);
JSONObject jsonObj = (JSONObject) obj;
String testValue = jsonObj.get("test").toString();
System.out.println("testValue : " + testValue);

http://www.rgagnon.com/javadetails/java-0593.html

유용한 팁이네요. 다른 운영체제는 또 다른 방법을 찾아야겠지만 ^^;

The Microsoft TASKLIST.EXE is used to dump the list of the currently running processes. It is similar to tasklist window but for the console.

From a Java program, we are launching TASKLIST.EXE and capture its output.

Note : TASKLIST.EXE is not included the HOME edition of XP. But you can download it from Web, for example : http://www.computerhope.com/download/winxp.htm.

import java.io.*;
import java.util.*;

public class WindowsUtils {
  public static List<String> listRunningProcesses() {
    List<String> processes = new ArrayList<String>();
    try {
      String line;
      Process p = Runtime.getRuntime().exec("tasklist.exe /fo csv /nh");
      BufferedReader input = new BufferedReader
          (new InputStreamReader(p.getInputStream()));
      while ((line = input.readLine()) != null) {
          if (!line.trim().equals("")) {
              // keep only the process name
              line = line.substring(1);
              processes.add(line.substring(0, line.indexOf(""")));
          }

      }
      input.close();
    }
    catch (Exception err) {
      err.printStackTrace();
    }
    return processes;
  }

  public static void main(String[] args){
      List<String> processes = listRunningProcesses();
      String result = "";

      // display the result 
      Iterator<String> it = processes.iterator();
      int i = 0;
      while (it.hasNext()) {
         result += it.next() +",";
         i++;
         if (i==10) {
             result += "\n";
             i = 0;
         }
      }
      msgBox("Running processes : " + result);
  }

  public static void msgBox(String msg) {
    javax.swing.JOptionPane.showConfirmDialog((java.awt.Component)
       null, msg, "WindowsUtils", javax.swing.JOptionPane.DEFAULT_OPTION);
  }
}

출처 : http://kogaeng.tistory.com/306