Merge branch 'master' into core-java-move-1

core-java-modules/core-java-networking-2/src/main/java/com/baeldung/httprequest/FullResponseBuilder.java

@@ -0,0 +1,65 @@
+package com.baeldung.httprequest;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.net.HttpURLConnection;
+import java.util.Iterator;
+import java.util.List;
+
+public class FullResponseBuilder {
+    public static String getFullResponse(HttpURLConnection con) throws IOException {
+        StringBuilder fullResponseBuilder = new StringBuilder();
+
+        fullResponseBuilder.append(con.getResponseCode())
+            .append(" ")
+            .append(con.getResponseMessage())
+            .append("\n");
+
+        con.getHeaderFields()
+            .entrySet()
+            .stream()
+            .filter(entry -> entry.getKey() != null)
+            .forEach(entry -> {
+
+                fullResponseBuilder.append(entry.getKey())
+                    .append(": ");
+
+                List<String> headerValues = entry.getValue();
+                Iterator<String> it = headerValues.iterator();
+                if (it.hasNext()) {
+                    fullResponseBuilder.append(it.next());
+
+                    while (it.hasNext()) {
+                        fullResponseBuilder.append(", ")
+                            .append(it.next());
+                    }
+                }
+
+                fullResponseBuilder.append("\n");
+            });
+
+        Reader streamReader = null;
+
+        if (con.getResponseCode() > 299) {
+            streamReader = new InputStreamReader(con.getErrorStream());
+        } else {
+            streamReader = new InputStreamReader(con.getInputStream());
+        }
+
+        BufferedReader in = new BufferedReader(streamReader);
+        String inputLine;
+        StringBuilder content = new StringBuilder();
+        while ((inputLine = in.readLine()) != null) {
+            content.append(inputLine);
+        }
+
+        in.close();
+
+        fullResponseBuilder.append("Response: ")
+            .append(content);
+
+        return fullResponseBuilder.toString();
+    }
+}

core-java-modules/core-java-networking-2/src/main/java/com/baeldung/httprequest/ParameterStringBuilder.java

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+package com.baeldung.httprequest;
+
+import java.io.UnsupportedEncodingException;
+import java.net.URLEncoder;
+import java.util.Map;
+
+public class ParameterStringBuilder {
+    public static String getParamsString(Map<String, String> params) throws UnsupportedEncodingException {
+        StringBuilder result = new StringBuilder();
+
+        for (Map.Entry<String, String> entry : params.entrySet()) {
+            result.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
+            result.append("=");
+            result.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
+            result.append("&");
+        }
+
+        String resultString = result.toString();
+        return resultString.length() > 0 ? resultString.substring(0, resultString.length() - 1) : resultString;
+    }
+}

core-java-modules/core-java-networking-2/src/main/java/com/baeldung/mail/EmailService.java

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+package com.baeldung.mail;
+
+import javax.mail.*;
+import javax.mail.internet.InternetAddress;
+import javax.mail.internet.MimeBodyPart;
+import javax.mail.internet.MimeMessage;
+import javax.mail.internet.MimeMultipart;
+import java.io.File;
+import java.util.Properties;
+
+public class EmailService {
+
+    private String host = "";
+    private int port = 0;
+    private String username = "";
+    private String password = "";
+
+
+    public EmailService(String host, int port, String username, String password) {
+
+        this.host = host;
+        this.port = port;
+        this.username = username;
+        this.password = password;
+
+        sendMail();
+    }
+
+    private void sendMail() {
+
+        Properties prop = new Properties();
+        prop.put("mail.smtp.auth", true);
+        prop.put("mail.smtp.starttls.enable", "true");
+        prop.put("mail.smtp.host", host);
+        prop.put("mail.smtp.port", port);
+        prop.put("mail.smtp.ssl.trust", host);
+
+        Session session = Session.getInstance(prop, new Authenticator() {
+            @Override
+            protected PasswordAuthentication getPasswordAuthentication() {
+                return new PasswordAuthentication(username, password);
+            }
+        });
+
+        try {
+
+                Message message = new MimeMessage(session);
+                message.setFrom(new InternetAddress("from@gmail.com"));
+                message.setRecipients(Message.RecipientType.TO, InternetAddress.parse("to@gmail.com"));
+                message.setSubject("Mail Subject");
+
+                String msg = "This is my first email using JavaMailer";
+
+                MimeBodyPart mimeBodyPart = new MimeBodyPart();
+                mimeBodyPart.setContent(msg, "text/html");
+
+                MimeBodyPart attachmentBodyPart = new MimeBodyPart();
+                attachmentBodyPart.attachFile(new File("pom.xml"));
+
+                Multipart multipart = new MimeMultipart();
+                multipart.addBodyPart(mimeBodyPart);
+                multipart.addBodyPart(attachmentBodyPart);
+
+                message.setContent(multipart);
+
+                Transport.send(message);
+
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static void main(String ... args) {
+        new EmailService("smtp.mailtrap.io", 25, "87ba3d9555fae8", "91cb4379af43ed");
+    }
+
+}