วันนี้ไปเจอเว็บไซต์ สอน Struts1 และ Struts2.

http://www.vaannila.com/

แนะนำเลยครับ ดีมากเลยนะ

การ submit เว็บผ่าน java class

1.File dataAction.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<%

String firstName = request.getParameter("fname");

String lastName = request.getParameter("lname");

String idCard = request.getParameter("idcard");

String date = request.getParameter("date");

System.out.println("firstName : " + firstName);

System.out.println("lastName : " + lastName);

System.out.println("idCard : " + idCard);

System.out.println("date : " + date);

System.out.println("############################################");

   %>

2.Class HtmlSubmitServlet.java 

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.PrintWriter;

import java.net.URL;

import java.net.URLConnection;

public class HtmlSubmitServlet {

                // the hard-coded URL to the Service I want to invoke (should be injected of

                // course)

                private static final String BASE_URL = "http://localhost:8080/TestWEB/dataAction.jsp";

                public static void main(String[] args) {

                                HtmlSubmitServlet h = new HtmlSubmitServlet();

                                String firstName = "Tester";

                                String lastName = "java";

                                String idCard = "123456678";

                                String date = "12/10/1985";

                                h.submitData(firstName, lastName, idCard, date);

                }

                public void submitData(String firstName, String lastName, String idCard, String date) {

                                try {

                                                URL url = new URL(BASE_URL);

                                                URLConnection con = url.openConnection();

                                                // inform the connection that we will send output and accept input

                                                con.setDoInput(true);

                                                con.setDoOutput(true);

                                                // Don't use a cached version of URL connection.

                                                con.setUseCaches(false);

                                                con.setDefaultUseCaches(false);

                                                con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

                                                // define a new PrintWriter on the output stream

                                                PrintWriter outWriter = new PrintWriter(con.getOutputStream());

                                                // send data to the servlet

                                                outWriter.print("fname=" + firstName);

                                                outWriter.print("&lanme=" + lastName);

                                                outWriter.print("&idcard=" + idCard);

                                                outWriter.print("&date=" + date);

                                                outWriter.close();

                                                InputStream input = con.getInputStream();

                                                File outputFile = new File("z.txt");

                                                FileOutputStream out = new FileOutputStream(outputFile);

                                                boolean eof = false;

                                                // read all bytes from the input and write them to the output

                                                while (!eof) {

                                                                int byteValue = input.read(); // read the stream

                                                                out.write(byteValue);

                                                                if (byteValue == -1)

                                                                                eof = true;

                                                }

                                                out.close();

                                } catch (FileNotFoundException fnfe) {

                                                fnfe.printStackTrace();

                                } catch (IOException ioe) {

                                                ioe.printStackTrace();

                                }

                }

}

ขั้นตอนการทำงาน  ให้ทำการ run file jsp ทิ้งไว้ จากนั้นให้มารัน .java เราจะเห็น output ที่ console

   ผลลัพธ์ที่ได้… 

firstName : Tester

lastName : java

idCard : 123456678

date : 12/10/1985

############################################

ตัวอย่างการเขียน java ลงไฟล์ .DOC

ตัวอย่างการเขียน java ลงไฟล์ .DOC

import java.io.File;

import java.io.IOException;

import java.io.PrintWriter;

public class WriteDocFile {

       public static void main(String args[]) throws IOException {

                File witches = new File("C:/Documents and Settings/All Users/Desktop/test.doc");

                PrintWriter out = new PrintWriter(witches);

                char[] array0 = { 'O', 'c', 'o', 'p', 's', 'O' }, array1 = { 's', 't',

                    'i', 'l', 'l', '0' }, array2 = { 'e', 's', 'c', 'a', 'p', 'e',

                    'd', '0' };

                String str0 = new String("chasing"), str1 = "Thieves";

                out.write(str1);

                out.print(" ");

                out.write(array2, 0, 7);

                out.println("");

                out.write(array0, 1, 4);

                out.print(" ");

                out.write(array1, 0, 5);

                out.print(" ");

                out.write(str0);

                out.flush();

              }

}

การส่ง E-Mail โดยใช้ smtp.gmail.com

ตัวอย่างการเขียน Class สำหรับการส่ง Email โดยใช้ บริการของ Gmail และมีการใช้ SSL ด้วย

/**

 * http://www.javaworkspace.com/javaMail.do เข้าไปดูตัวอย่างเพิ่มเติมได้ที่นี่นะครับ

 */

import java.security.Security;

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 SimpleGmailSSL {

      private static final String SMTP_HOST_NAME = "66.249.93.109";//"smtp.gmail.com";

      private static final String SMTP_PORT = "465";

      private static final String emailMsgTxt = "Test Message Contents";

      private static final String emailSubjectTxt = "A test from gmail";

      private static final String emailFromAddress = "test.01@gmail.com";

      private static final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";

      private static final String[] sendTo = { "test.01@gmail.com", "test0.1@gmail.com" };

      public static void main(String args[]) throws Exception {

            Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());

            new SimpleGmailSSL().sendSSLMessage(sendTo, emailSubjectTxt, emailMsgTxt, emailFromAddress);

            System.out.println("Sucessfully Sent mail to All Users");

      }

      public void sendSSLMessage(String recipients[], String subject, String message, String from) throws MessagingException {

            try {

                  boolean debug = true;

                  Properties props = new Properties();

                  props.put("mail.smtp.host", SMTP_HOST_NAME);

                  props.put("mail.smtp.auth", "true");

                  props.put("mail.smtp.starttls.enable", "true");

                  props.put("mail.debug", "true");

                  props.put("mail.smtp.port", SMTP_PORT);

                  props.put("mail.smtp.socketFactory.port", SMTP_PORT);

                  props.put("mail.smtp.socketFactory.class", SSL_FACTORY);

                  props.put("mail.smtp.socketFactory.fallback", "false");

                  Session session = Session.getDefaultInstance(props, new javax.mail.Authenticator() {

                        protected PasswordAuthentication getPasswordAuthentication() {

                              return new PasswordAuthentication("email.test@gmail.com", "password");

                        }

                  });

                  session.setDebug(debug);

                  Message msg = new MimeMessage(session);

                  InternetAddress addressFrom = new InternetAddress(from);

                  msg.setFrom(addressFrom);

                  InternetAddress[] addressTo = new InternetAddress[recipients.length];

                  for (int i = 0; i < recipients.length; i++) {

                        addressTo[i] = new InternetAddress(recipients[i]);

                  }

                  msg.setRecipients(Message.RecipientType.TO, addressTo);

                  // Setting the Subject and Content Type

                  msg.setSubject(subject);

                  msg.setContent(message, "text/plain");

                  Transport.send(msg);

            } catch (MessagingException e) {

                  throw new RuntimeException(e);

            }

           

      }

}




ขอให้สนุกกับการเขียนโปรแกรมนะครับ
่โดย : http://java-thai-talk.blogspot.com

Code วิธีการรัน คำสั่ง shell ด้วย java.

Code วิธีการรัน คำสั่ง shell ด้วย java.

============================================

import java.io.BufferedReader;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.InputStreamReader;

public class ExecuteSH {

      public static void main(String args[]) {

            String path = "./";

            String fileShell = "executeable.sh";

            String cmd ="sh "+path + fileShell;

            File inputFile = null;

            try {

                  inputFile = new File(path + fileShell);

                  if (!inputFile.exists()) {

                        throw new FileNotFoundException("input file not found: " + inputFile.getPath());

                  } else {

                        System.out.println("Input Path :: " + inputFile.getPath());

                        System.out.println("shell command :: " + cmd);

                        System.out.println(MNPExecuteSH.executeSH(cmd));

                  }

            } catch (FileNotFoundException fe) {

                  System.out.println("xx error 1:: >> ");

                  fe.printStackTrace();

            } catch (Exception e) {

                  System.out.println("xx error 2:: >> ");

                  e.printStackTrace();

            } finally {

                  System.out.println("Run Done...");

            }

      }

      public static String executeSH(String cmd) {

            System.out.println("Command=" + cmd);

            try {

                  Runtime run = Runtime.getRuntime();

                  Process pr = run.exec(cmd);

                  //System.out.println("Obj Process "+pr);

                  pr.waitFor();

                  //System.out.println("pr.getInputStream() "+pr.getInputStream());

                  BufferedReader buf = new BufferedReader(new InputStreamReader(pr.getInputStream()));

                  String line = "";

                  while ((line = buf.readLine()) != null) {

                        System.out.println(line);

                  }

                  //System.out.println("Test executeSH");

            } catch (Exception e) {

                  // return e.toString();

                  System.out.println(e.toString());

            }

            return "Success";

      }

}