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reading text (user:pass) from txt file character by character

Im trying to read username and password from .txt file in Java.
Format of file is as following:
user1:pass1
user2:pass2
user3:pass3
My code can't properly read passwords, any hints?
EDIT: also missing last password because last \n is missing, any way to repair it instead of adding extra newline to txt file?
try {
FileReader fileReader = new FileReader(filename);
BufferedReader bufferedReader = new BufferedReader(fileReader);
int c;
String user = "";
String pass = "";
char helper = 0;
while(( c = bufferedReader.read()) != -1 ) {
System.out.println((char)c);
if((char)c == '\n') {
ftpServer.addUser(user, pass);
//System.out.printf("%s", pass);
user = "";
pass = "";
helper = 0;
} else {
if ((char) c == ':') {
helper = ':';
}
if (helper == 0) {
user += (char) c;
}
if (helper == ':') {
if ((char) c != ':')
pass += (char) c;
}
}
}
bufferedReader.close();
}

If using JAVA: 8 and 8+ you could use stream on Files - java.nio.files
Path path = Paths.get(filename);
try (Stream<String> lines = Files.lines(path)) {
lines.forEach(s -> {
if (s.contains(":")) {
String[] line = s.split(":");
String userName = line[0];
String pass = line[1];
System.out.println("User name: " + userName + " password: " + pass);
}
});
} catch (IOException ex) {
// do something or re-throw...
}
Or use BufferedReader
BufferedReader reader;
try {
reader = new BufferedReader(new FileReader("/Users/kants/test.txt"));
String lineInFile = reader.readLine();
while (lineInFile != null) {
if (lineInFile.contains(":")) {
String[] line = lineInFile.split(":");
String userName = line[0];
String pass = line[1];
System.out.println("User name: " + userName + " password: " + pass);
}
lineInFile = reader.readLine();
}
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
NOTE: You must add further null checks and try-catch handlings. Above code is just to show you the logic.

I dont think you need an additional loop
public static void main(String[] args) throws IOException {
BufferedReader reader;
try {
reader = new BufferedReader(new FileReader(
"path/to/file"));
String line = reader.readLine();
while (line != null) {
System.out.println(line);
// read next line
line = reader.readLine();
if (line.contains(":")) {
String user = line.split(":")[0];
String pass = line.split(":")[1];
System.out.println("User is " + user + "Password is " + pass);
} }
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
prints
user1:pass1
User is user2Password is pass2
user2:pass2
User is user3Password is pass3
user3:pass3

Here is an elaborated implementation -
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.HashSet;
import java.util.Set;
import java.util.stream.Stream;
public class ReadFileAsStream {
public static void main(String... arguments) {
CredentialsParser parser;
try {
parser = new CredentialsParser("c:/temp/credtest.txt");
Credential[] credentials = parser.getCredentials();
for (Credential credential : credentials) {
System.out.println(String.format("%s : %s", credential.getUsername(), credential.getPassword()));
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
//Parser for the credentials file format
class CredentialsParser {
private Set<Credential> credentials = new HashSet<>();
String filename = null;
public CredentialsParser() {
super();
}
public CredentialsParser(String filename) throws IOException {
super();
setFilename(filename);
if (getFilename() != null) {
parseCredentialsFile();
}
}
public Credential[] getCredentials() {
return credentials.toArray(new Credential[credentials.size()]);
}
// method to add credentials
public void addCredential(String entry) {
if (entry.indexOf(':') > -1) {
String[] values = entry.split(":");
credentials.add(new Credential(values[0], values[1]));
}
}
public String getFilename() {
return filename;
}
public void setFilename(String filename) {
this.filename = filename;
}
protected void parseCredentialsFile() throws IOException {
// read file into stream, try-with-resources
try (Stream<String> stream = Files.lines(Paths.get(filename))) {
stream.forEach(this::addCredential);
}
}
}
// Value holder for each credential entry
class Credential {
private String username = null;
private String password = null;
public Credential() {
super();
}
public Credential(String username, String password) {
super();
this.username = username;
this.password = password;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}

Please modify your code to this :
Use split method to make your work easy :)
public class Example {
public static void main(String[] args) {
BufferedReader reader;
try {
reader = new BufferedReader(new FileReader("F://test.txt"));
String line = reader.readLine();
while (line != null) {
String[] lineParts = line.split(":");
System.out.println("user : " + lineParts[0]);
System.out.println("password : " + lineParts[1]);
line = reader.readLine();
}
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
In test.txt :
user1:pass1
user2:pass2
user3:pass3
Output :
user : user1
password : pass1
user : user2
password : pass2
user : user3
password : pass3

OneSignal customKey get error: missing return statement report

I use codeEditor to make appybuilder extensions. I tried to get the customkey value that was obtained when the application got push notification from OneSignal.
here is the full code that I tried to make:
import android.content.Context;
import android.util.Log;
import com.google.appinventor.components.common.ComponentCategory;
import com.google.appinventor.components.annotations.*;
import com.google.appinventor.components.runtime.*;
import com.google.appinventor.components.annotations.DesignerComponent;
import com.google.appinventor.components.annotations.DesignerProperty;
import com.google.appinventor.components.annotations.PropertyCategory;
import com.google.appinventor.components.annotations.SimpleObject;
import com.google.appinventor.components.annotations.SimpleProperty;
import com.google.appinventor.components.annotations.UsesLibraries;
import com.google.appinventor.components.annotations.UsesPermissions;
import com.onesignal.OSNotification;
import com.onesignal.OSNotificationAction.ActionType;
import com.onesignal.OSNotificationOpenResult;
import com.onesignal.OSPermissionSubscriptionState;
import com.onesignal.OneSignal;
import com.onesignal.OneSignal.LOG_LEVEL;
import com.onesignal.OneSignal.NotificationOpenedHandler;
import com.onesignal.OneSignal.NotificationReceivedHandler;
import com.onesignal.OneSignal.OSInFocusDisplayOption;
import org.json.JSONObject;
#DesignerComponent(version = 1, description = "This Extension was created with the AppyBuilder Code Editor.<br>" +
"Create your own here:<br><a href='https://editor.appybuilder.com' target='_blank'>https://editor.appybuilder.com</a><br>",
category = ComponentCategory.EXTENSION,
nonVisible = true, iconName = "http://appyBuilder.com/extensions/icons/extension.png")
#SimpleObject(external = true)
public class OneSignalPlus extends AndroidNonvisibleComponent {
private ComponentContainer container;
private boolean soundEnabled = true;
private boolean subscriptionEnabled = true;
private boolean vibrateEnabled = true;
private class ExampleNotificationReceivedHandler implements NotificationReceivedHandler {
private ExampleNotificationReceivedHandler() {
}
public void notificationReceived(OSNotification notification) {
JSONObject data = notification.payload.additionalData;
String notificationID = notification.payload.notificationID;
String title = notification.payload.title;
String body = notification.payload.body;
String smallIcon = notification.payload.smallIcon;
String largeIcon = notification.payload.largeIcon;
String bigPicture = notification.payload.bigPicture;
String smallIconAccentColor = notification.payload.smallIconAccentColor;
String sound = notification.payload.sound;
String ledColor = notification.payload.ledColor;
int lockScreenVisibility = notification.payload.lockScreenVisibility;
String groupKey = notification.payload.groupKey;
String groupMessage = notification.payload.groupMessage;
String fromProjectNumber = notification.payload.fromProjectNumber;
String rawPayload = notification.payload.rawPayload;
Log.d("OneSignalPush", "NotificationID received: " + notificationID);
if (data != null) {
String customKey = data.optString("customkey", null);
if (customKey != null) {
Log.d("OneSignalPush", "customkey set with value: " + customKey);
}
}
}
}
class NotificationOpenHandler implements NotificationOpenedHandler {
NotificationOpenHandler() {
}
public void notificationOpened(OSNotificationOpenResult osNotificationOpenResult) {
ActionType actionType = osNotificationOpenResult.action.type;
JSONObject data = osNotificationOpenResult.notification.payload.additionalData;
Log.d("OneSignalPush", "NotificationID received: " + data);
if (data != null) {
String customKey = data.optString("customkey", null);
if (customKey != null) {
Log.i("OneSignalExample", "customkey set with value: " + customKey);
} else {
Log.i("OneSignalExample", "No data");
}
}
}
}
public OneSignalPlus(ComponentContainer container) {
super(container.$form());
this.container = container;
OneSignal.setLogLevel(LOG_LEVEL.DEBUG, LOG_LEVEL.NONE);
OneSignal.startInit(container.$context()).autoPromptLocation(false).setNotificationReceivedHandler(new ExampleNotificationReceivedHandler()).inFocusDisplaying(OSInFocusDisplayOption.Notification).init();
}
/**
* Get Custom Key
*/
#SimpleProperty(category = PropertyCategory.BEHAVIOR, description = "Get custom Key. If ther is no customkey it will return '-1'.")
public final String GetCustomKey(OSNotificationOpenResult osNotificationOpenResult) {
try {
ActionType actionType = osNotificationOpenResult.action.type;
JSONObject data = osNotificationOpenResult.notification.payload.additionalData;
Log.d("OneSignalPush", "NotificationID received: " + data);
if (data != null) {
String customKey = data.optString("customkey", null);
if (customKey != null) {
return customKey;
} else {
return "-1";
}
}
} catch (NullPointerException e) {
return false;
}
}
/**
* Showing Log
*/
#SimpleProperty(description = "If you want to enable the log then set it to true.")
public final void EnableLog(boolean z) {
PushNotifications pushNotifications = this;
if (z) {
LOG_LEVEL log_level = LOG_LEVEL.DEBUG;
OneSignal.setLogLevel(log_level, log_level);
return;
}
OneSignal.setLogLevel(LOG_LEVEL.DEBUG, LOG_LEVEL.NONE);
}
#SimpleProperty(category = PropertyCategory.BEHAVIOR, description = "Get the subscription Status")
public final boolean GetSubscriptionStatus() {
try {
return OneSignal.getPermissionSubscriptionState().getSubscriptionStatus().getSubscribed();
} catch (NullPointerException e) {
return false;
}
}
}
but the code when compiled gives a report of the error "missing return statement". you can try to build this code here codeEditor
edited:
i have tried to add return statement after if like this
public final String GetCustomKey(OSNotificationOpenResult osNotificationOpenResult) {
ActionType actionType = osNotificationOpenResult.action.type;
JSONObject data = osNotificationOpenResult.notification.payload.additionalData;
String customKey;
if (data != null) {
customKey = data.optString("customkey", null);
if (customKey != null) {
return customKey;
} else {
return "-1";
}
}
return "-1";
}
or
public final String GetCustomKey(OSNotificationOpenResult osNotificationOpenResult) {
ActionType actionType = osNotificationOpenResult.action.type;
JSONObject data = osNotificationOpenResult.notification.payload.additionalData;
String customKey;
if (data != null) {
customKey = data.optString("customkey", null);
if (customKey != null) {
return customKey;
}
}
return "-1";
}
but it give me more warning and error report
can you give me a clue what is wrong or less from the code

You need to remove the return "-1"; out of the inner if statement.
public final String GetCustomKey() {
if (data != null) {
customKey = data.optString("customkey", null);
if (customKey != null) {
return customKey;
}
}
return "-1";
}
For bonus points, you can clean the method up a little such as
public final String GetCustomKey(OSNotificationOpenResult osNotificationOpenResult) {
ActionType actionType = osNotificationOpenResult.action.type;
JSONObject data = osNotificationOpenResult.notification.payload.additionalData;
return data.containsKey("customkey") ? data.get("customkey").toString() : "-1";
}

Unable to upload a file through multipart form data from java as well as postman

I have been trying to upload a file from java as well as postman. But I am unable to upload. The server is giving back the response as 200 Ok. But, the file is not being uploaded.
API Details:
I have an API for uploading file as "FileExplorerController". This API has a method "upload()" to upload the files. Url to access this method is"/fileupload". The API is working fine if I upload a file through HTML UI.
But I am trying to upload using Java. I have tried using Postman as well.
I have passed the multipart form data in several ways. But unable to resolve the issue. The code is as follows.
API - Upload - Function
public Result upload() {
String fileName="";
String folderPath="";
String fileDescription="";
String userName = "";
StopWatch stopWatch = null;
List<FileUploadStatusVo> fileStatus = new ArrayList<>();
try {
stopWatch = LoggerUtil.startTime("FileExplorerController -->
upload() : File Upload");
StringBuilder exceptionBuilder = new StringBuilder();
Http.MultipartFormData body =
play.mvc.Controller.request().body().asMultipartFormData();
Http.Context ctx = Http.Context.current();
userName = ctx.session().get(SessionUtil.USER_NAME);
String password = "";
if(StringUtils.isBlank(userName)) {
Map<String, String[]> formValues = play.mvc.Controller.
request().body().asMultipartFormData().asFormUrlEncoded();
if(formValues != null) {
if(formValues.get("userName") != null &&
formValues.get("userName").length > 0) {
userName = formValues.get("userName")[0];
}
if(formValues.get("password") != null &&
formValues.get("password").length > 0) {
password = formValues.get("password")[0];
}
}
if(StringUtils.isBlank(userName) ||
StringUtils.isBlank(password)) {
return Envelope.ok();
}
UserVo userVo = userService.findUserByEmail(userName);
boolean success = BCrypt.checkpw(password, userVo.password);
if(!success) {
return badRequest("Password doesn't match for the given user
name: "+userName);
}
if(userVo == null) {
return Envelope.ok();
}
}
boolean override = false;
String fileTags="";
boolean isPublicView = false;
boolean isPublicDownload = false;
boolean isPublicDelete = false;
boolean isEmailNotification = false;
boolean isEmailWithS3Link = false;
List<String> viewerGroupNames = new ArrayList<>();
List<String> downloaderGroupNames = new ArrayList<>();
List<String> deleterGroupNames = new ArrayList<>();
List<String> viewerUserNames = new ArrayList<>();
List<String> downloaderUserNames = new ArrayList<>();
List<String> deleterUserNames = new ArrayList<>();
List<String> emailIds = new ArrayList<>();
Map<String, String[]> formValues =
play.mvc.Controller.request().body().
asMultipartFormData().asFormUrlEncoded();
JSONObject obj = new JSONObject(formValues.get("model")[0]);
Set<String> groupNames = new HashSet<>();
Set<String> userNames = new HashSet<>();
if(obj != null) {
if(obj.get("override") != null) {
override = Boolean.valueOf(obj.get("override").toString());
}
if(obj.get("description") != null) {
fileDescription = obj.get("description").toString();
}
if(obj.get("tags") != null) {
fileTags = obj.get("tags").toString();
}
if(obj.get("folderPath") != null){
folderPath = obj.get("folderPath").toString();
} else {
folderPath =
ctx.session().get(SessionUtil.LOCAL_STORAGE_PATH);
}
if(obj.get("isPublicView") != null) {
isPublicView =
Boolean.parseBoolean(obj.get("isPublicView").toString());
}
if(obj.get("isPublicDownload") != null) {
isPublicDownload =
Boolean.parseBoolean(obj.get("isPublicDownload").toString());
}
if(obj.get("isPublicDelete") != null) {
isPublicDelete = Boolean.parseBoolean(
obj.get("isPublicDelete").toString());
}
if(obj.get("emailNotification") != null) {
isEmailNotification =
Boolean.parseBoolean(obj.get("emailNotification").toString());
}
if(obj.get("emailWithFileAttachement") != null) {
isEmailWithS3Link =
Boolean.parseBoolean(obj.get(
"emailWithFileAttachement").toString());
}
if(obj.get("viewerGroupNames") != null) {
//TODO
if(!isPublicView) {
String[] namesArr =
(obj.get("viewerGroupNames").toString()).split(",");
for(String name:namesArr) {
if(StringUtils.isNotEmpty(name)) {
viewerGroupNames.add(name);
groupNames.add(name);
}
}
}
}
if(obj.get("downloaderGroupNames") != null) {
//TODO
if(!isPublicDownload) {
String[] namesArr =
(obj.get("downloaderGroupNames").toString().split(","));
for(String name:namesArr){
if(StringUtils.isNotEmpty(name)) {
downloaderGroupNames.add(name);
groupNames.add(name);
}
}
}
}
if(obj.get("deleteGroupNames") != null) {
//TODO
if(!isPublicDelete){
String[] namesArr =
(obj.get("deleteGroupNames").toString().split(","));
for(String name:namesArr){
if(StringUtils.isNotEmpty(name)) {
deleterGroupNames.add(name);
groupNames.add(name);
}
}
}
}
if(obj.get("viewerUserNames") != null) {
//TODO
if(!isPublicView) {
String[] namesArr =
(obj.get("viewerUserNames").toString()).split(",");
for(String name:namesArr) {
if(StringUtils.isNotEmpty(name)) {
viewerUserNames.add(name);
userNames.add(name);
}
}
}
}
if(obj.get("downloaderUserNames") != null) {
//TODO
if(!isPublicDownload) {
String[] namesArr =
(obj.get("downloaderUserNames").toString().split(","));
for(String name:namesArr){
if(StringUtils.isNotEmpty(name)) {
downloaderUserNames.add(name);
userNames.add(name);
}
}
}
}
if(obj.get("deleteUserNames") != null) {
//TODO
if(!isPublicDelete){
String[] namesArr =
(obj.get("deleteUserNames").toString().split(","));
for(String name:namesArr){
if(StringUtils.isNotEmpty(name)) {
deleterUserNames.add(name);
userNames.add(name);
}
}
}
}
if(obj.get("emailIds") != null) {
if(isEmailWithS3Link) {
String[] emailIdsArr =
(obj.get("emailIds").toString()).split(",");
for(String emailId:emailIdsArr){
if(StringUtils.isNotEmpty(emailId)){
emailIds.add(emailId);
}
}
}
}
}
if(groupNames.size() == 0 && userNames.size() == 0){
isEmailNotification = false;
}
List<Http.MultipartFormData.FilePart> files = body.getFiles();
boolean multiUpload = false;
if(files != null && files.size() > 1) {
multiUpload = true;
}
Logger.info("Total Number of files is to be uploaded:"+ files.size()
+" by user: " + userName);
int uploadCount = 0;
List<String> fileNames = new ArrayList<>();
List<String> fileMasters = new ArrayList<>();
FileMasterVo fileMasterVo = null;
UserVo userVo = userService.findUserByEmail(userName);
for(Http.MultipartFormData.FilePart uploadedFile: files) {
if (uploadedFile == null) {
return badRequest("File upload error for file " +
uploadedFile + " for file path: " + fileName);
}
uploadCount++;
String contentType = uploadedFile.getContentType();
String name = uploadedFile.getFile().getName();
Logger.info("Content Type: " + contentType);
Logger.info("File Name: " + fileName);
Logger.info("Name: " + name);
Logger.info("Files Processed : "+uploadCount+"/"+files.size()+"
for user: "+userName);
try {
String extension =
FileUtil.getExtension(uploadedFile.getFilename()).toLowerCase();
File renamedUploadFile =
FileUtil.moveTemporaryFile(System.getProperty("java.io.tmpdir"),
System.currentTimeMillis() + "_" +
uploadedFile.getFilename(), uploadedFile.getFile());
FileInputStream fis = new
FileInputStream(renamedUploadFile);
String errorMsg = "";
fileName = folderPath + uploadedFile.getFilename();
fileNames.add(uploadedFile.getFilename());
if(multiUpload) {
Logger.info("Attempting to upload file " + folderPath +
"/" + uploadedFile.getFilename());
fileMasterVo = fileService.upload(folderPath,fileName,
fileDescription, new Date(), fis, fis.available(),
extension, override,
fileTags, isPublicView, isPublicDownload,
isPublicDelete, viewerGroupNames, downloaderGroupNames,
deleterGroupNames, viewerUserNames,
downloaderUserNames,
deleterUserNames,userName,isEmailNotification);
} else if(fileName != null) {
Logger.info("Attempting to upload file " + fileName);
int index = fileName.lastIndexOf("/");
if (index > 1) {
fileMasterVo =
fileService.upload(folderPath,fileName, fileDescription,
new Date(), fis, fis.available(), extension, override,
fileTags, isPublicView, isPublicDownload,
isPublicDelete, viewerGroupNames, downloaderGroupNames,
deleterGroupNames, viewerUserNames,
downloaderUserNames,
deleterUserNames,userName,isEmailNotification);
} else {
errorMsg = "Root Folder MUST exist to upload any
file";
return badRequest(errorMsg);
}
} else {
errorMsg = "File Name is incorrect";
return badRequest(errorMsg);
}
createFileActivityLog(
fileMasterVo,userVo,ViewConstants.UPLOADED);
if (fileMasterVo != null && fileMasterVo.getId() != null) {
fileMasters.add(fileMasterVo.getId().toString());
}
} catch (Exception inEx) {
createErrorLog(userName,fileName,inEx);
exceptionBuilder.append("Exception occured in uploading
file: ");
exceptionBuilder.append(name);
exceptionBuilder.append(" are as follows ");
exceptionBuilder.append(ExceptionUtils.getStackTrace(inEx));
}
fileStatus.add(new
FileUploadStatusVo(uploadedFile.getFilename(),
fileMasterVo.getStatus()));
}
if(isEmailNotification){
fileService.sendNotificationForFile(folderPath,fileNames,
userName, groupNames,
userNames, ViewConstants.UPLOADED);
}
if (isEmailWithS3Link) {
//fileService.sendFileS3Link(folderPath, emailIds, fileMasters);
// Replacing sending S3 link with sending cdi specific link
fileService.sendFilesLink(emailIds, fileMasters);
}
String exceptions = exceptionBuilder.toString();
LoggerUtil.endTime(stopWatch);
if(!StringUtils.isBlank(exceptions)) {
Logger.error("Exception occured while uploading file: " +
fileName + " are as follows " + exceptions);
}
return Envelope.ok(fileStatus);
} catch (Exception inEx) {
createErrorLog(userName,fileName,inEx);
return badRequest("There is a system error please contact
support/administrator" );
} }
Client
**Client - Program**
multipart.addFormField("fileName",file.getAbsolutePath());
multipart.addFormField("folderPath","D/");
multipart.addFormField("fileDescription","Desc");
multipart.addFormField("userName","superadmin");
multipart.addFormField("password","admin");
multipart.addFormField("override","false");
multipart.addFormField("fileTags","tag");
multipart.addFormField("isPublicView","true");
multipart.addFormField("isPublicDownload","true");
multipart.addFormField("isPublicDelete","false");
multipart.addFormField("isEmailNotification","false");
multipart.addFormField("isEmailWithS3Link","true");*/
multipart.addFormField("file", input);
System.out.print("SERVER REPLIED: ");
for (String line : response)
{
System.out.print(line);
}
// synchronize(clientFolder, uploadFolder, true);
}
catch (MalformedURLException e)
{
e.printStackTrace();
}
catch (IOException e)
{
e.printStackTrace();
}

I am able to upload using the following code snippet.
Here "model" is a json object which contain all parameters.
DefaultHttpClient client = new DefaultHttpClient();
HttpEntity entity = MultipartEntityBuilder
.create()
.addTextBody("userName", userName)
.addTextBody("password", passWord)
.addBinaryBody("upload_file", new File(sourceFolder + "/" + fileName), ContentType.create("application/octet-stream"), fileName)
.addTextBody("model", object.toString())
.build();
HttpPost post = new HttpPost(uploadURL);
post.setEntity(entity);
HttpResponse response = null;
try {
response = client.execute(post);
if (response.getStatusLine().getStatusCode() == 200) {
logger.info("File " + file.getName() + " Successfully Uploaded At: " + destination);
} else {
logger.info("File Upload Unsuccessful");
}
logger.info("Response from server:" + response.getStatusLine());
} catch (ClientProtocolException e) {
logger.error("Client Protocol Exception");
logger.error(e.getMessage());

parse CSV using BaneUtilBean

I am trying to parse a csv and map the fields to a POJO class. However I can see that the mapping is not achieved correctly.
I am trying to map the header from a POJO file to the csv.
public class CarCSVFileInputBean {
private long Id;
private String shortName;
private String Name;
private String Type;
private String Environment;
//getter and setters
}
Can someone please take a look at my code:
public class carCSVUtil {
private static Log log = LogFactory.getLog(carCSVUtil.class);
private static final List<String> fileHeaderFields = new ArrayList<String>();
private static final String UTF8CHARSET = "UTF-8";
static {
for (Field f : carCSVFileInputBean.class.getDeclaredFields()) {
fileHeaderFields.add(f.getName());
}
}
public static List<carCSVFileInputBean> getCSVInputList(InputStream inputStream) {
CSVReader reader = null;
List<carCSVFileInputBean> csvList = null;
carCSVFileInputBean inputRecord = null;
String[] header = null;
String[] row = null;
try {
reader = new CSVReader(new InputStreamReader(inputStream, UTF8CHARSET));
csvList = new ArrayList<carCSVFileInputBean>();
header = reader.readNext();
boolean isEmptyLine = true;
while ((row = reader.readNext()) != null) {
isEmptyLine = true;
if (!(row.length == 1 && StringUtils.isBlank(row[0]))) { // not an empty line, not even containing ','
inputRecord = new carCSVFileInputBean();
isEmptyLine = populateFields(inputRecord, header, row);
if (!isEmptyLine)
csvList.add(inputRecord);
}
}
} catch (IOException e) {
log.debug("IOException while accessing carCSVFileInputBean: " + e);
return null;
} catch (IllegalAccessException e) {
log.debug("IllegalAccessException while accessing carCSVFileInputBean: " + e);
return null;
} catch (InvocationTargetException e) {
log.debug("InvocationTargetException while copying carCSVFileInputBean properties: " + e);
return null;
} catch (Exception e) {
log.debug("Exception while parsing CSV file: " + e);
return null;
} finally {
try {
if (reader != null)
reader.close();
} catch (IOException ioe) {}
}
return csvList;
}
protected static boolean populateFields(carCSVFileInputBean inputRecord, String[] header, String[] row) throws IllegalAccessException, InvocationTargetException {
boolean isEmptyLine = true;
for (int i = 0; i < row.length; i++) {
String val = row[i];
if (!StringUtils.isBlank(val)) {
BeanUtilsBean.getInstance().copyProperty(inputRecord, header[i], val);
isEmptyLine = false;
}
}
return isEmptyLine;
}
}

I found the solution - the headers in the csv file are expected to begin with a lowercase.

How can I access my gmail emails from a Java application?

I want to fetch the emails of my gmail account from Java code. How can I go about doing this?

Here is the Refresh Working Code, that Displays the Email msgs in the console in a proper format along with the Attachments also being Downloaded....
import com.sun.mail.pop3.POP3Folder;
import com.sun.mail.pop3.POP3SSLStore;
import java.io.*;
import java.util.*;
import javax.mail.*;
import javax.mail.internet.MimeBodyPart;
public class MailfetchingPop3
{
private Session session;
private POP3SSLStore store;
private String username;
private String password;
private POP3Folder folder;
public static String numberOfFiles = null;
public static int toCheck = 0;
public static Writer output = null;
URLName url;
public static String receiving_attachments="C:\\download";
public MailfetchingPop3()
{
session = null;
store = null;
}
public void setUserPass(String username, String password)
{
this.username = username;
this.password = password;
}
public void connect()
throws Exception
{
String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
Properties pop3Props = new Properties();
pop3Props.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY);
pop3Props.setProperty("mail.pop3.socketFactory.fallback", "false");
pop3Props.setProperty("mail.pop3.port", "995");
pop3Props.setProperty("mail.pop3.socketFactory.port", "995");
url = new URLName("pop3", "pop.gmail.com", 995, "", username, password);
session = Session.getInstance(pop3Props, null);
store = new POP3SSLStore(session, url);
store.connect();
}
public void openFolder(String folderName)
throws Exception
{
folder = (POP3Folder)store.getFolder(folderName);
System.out.println((new StringBuilder("For test----")).append
(folder.getParent().getFullName()).toString());
if(folder == null)
throw new Exception("Invalid folder");
try
{
folder.open(2);
System.out.println((new StringBuilder("Folder name----")).append
(folder.getFullName()).toString());
}
catch(Exception ex)
{
System.out.println((new StringBuilder("Folder Opening Exception..")).append(ex).toString());
}
}
public void closeFolder()
throws Exception
{
folder.close(false);
}
public int getMessageCount()
throws Exception
{
return folder.getMessageCount();
}
public int getNewMessageCount()
throws Exception
{
return folder.getNewMessageCount();
}
public void disconnect()
throws Exception
{
store.close();
}
public void printAllMessages()
throws Exception
{
Message msgs[] = folder.getMessages();
FetchProfile fp = new FetchProfile();
folder.fetch(msgs, fp);
for(int i = 0; i < msgs.length; i++){
Message message = msgs[i];
dumpEnvelope(msgs[i]);
System.out.println("==============================");
System.out.println("Email #" + (i + 1));
System.out.println("Subject: " + message.getSubject());
System.out.println("From: " + message.getFrom()[0]);
System.out.println("Text: " + message.getContent().toString());
}
}
public static int saveFile(File saveFile, Part part) throws Exception {
BufferedOutputStream bos = new BufferedOutputStream( new
FileOutputStream(saveFile) );
byte[] buff = new byte[2048];
InputStream is = part.getInputStream();
int ret = 0, count = 0;
while( (ret = is.read(buff)) > 0 ){
bos.write(buff, 0, ret);
count += ret;
}
bos.close();
is.close();
return count;
}
private static void dumpEnvelope(Message m) throws Exception
{
String body="";
String path="";
int size=0;
Object content = m.getContent();
if(content instanceof String){
body = (String)content;
}
else if(content instanceof Multipart)
{
Multipart mp = (Multipart)content;
for (int j=0; j < mp.getCount(); j++)
{
Part part = mp.getBodyPart(j);
String disposition = part.getDisposition();
//System.out.println("test disposition---->>"+disposition);
if (disposition == null) {
// Check if plain
MimeBodyPart mbp = (MimeBodyPart)part;
if (mbp.isMimeType("text/plain")) {
body += mbp.getContent().toString();
}
else if (mbp.isMimeType("TEXT/HTML")) {
body += mbp.getContent().toString();
}
else {
//unknown
}
} else if ((disposition != null) &&
(disposition.equals(Part.ATTACHMENT) || disposition.equals
(Part.INLINE) || disposition.equals("ATTACHMENT") || disposition.equals
("INLINE")) )
{
// Check if plain
MimeBodyPart mbp = (MimeBodyPart)part;
if (mbp.isMimeType("text/plain")) {
body += (String)mbp.getContent();
}
else if (mbp.isMimeType("TEXT/HTML")) {
body += mbp.getContent().toString();
}
else {
File savedir = new File(receiving_attachments);
savedir.mkdirs();
File savefile = new File(savedir+"\\"+part.getFileName());
path = savefile.getAbsolutePath();
size = saveFile( savefile, part);
}
}
}
}
}
public static void main(String args[])
{
try
{
MailfetchingPop3 gmail = new MailfetchingPop3();
gmail.setUserPass("your-gmail-username", "your-gmail-password");
gmail.connect();
gmail.openFolder("INBOX");
gmail.printAllMessages();
}
catch(Exception e)
{
e.printStackTrace();
System.exit(-1);
}
}
}

Another option: if you don't mind it being a Gmail-specific solution, note that Gmail also provides an RSS feed to your mailbox, which you can then access with normal XML processing APIs.

Gmail uses IMAP, which Javamail can use. Try to use that in an implementation, and if you get stuck, post some more specific questions here.

Here is the code which fetch mail along with it's attachments (if any) from a gmail account using POST OFFICE PROTOCOL (pop3) .
import com.sun.mail.pop3.POP3Folder;
import com.sun.mail.pop3.POP3SSLStore;
import java.io.*;
import java.util.*;
import javax.mail.*;
import javax.mail.internet.MimeBodyPart;
public class MailfetchingPop3
{
private Session session;
private POP3SSLStore store;
private String username;
private String password;
private POP3Folder folder;
public static String numberOfFiles = null;
public static int toCheck = 0;
public static Writer output = null;
URLName url;
public static String receiving_attachments="C:\\download";
public MailfetchingPop3()
{
session = null;
store = null;
}
public void setUserPass(String username, String password)
{
this.username = username;
this.password = password;
}
public void connect()
throws Exception
{
String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
Properties pop3Props = new Properties();
pop3Props.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY);
pop3Props.setProperty("mail.pop3.socketFactory.fallback", "false");
pop3Props.setProperty("mail.pop3.port", "995");
pop3Props.setProperty("mail.pop3.socketFactory.port", "995");
url = new URLName("pop3", "pop.gmail.com", 995, "", username, password);
session = Session.getInstance(pop3Props, null);
store = new POP3SSLStore(session, url);
store.connect();
}
public void openFolder(String folderName)
throws Exception
{
folder = (POP3Folder)store.getFolder(folderName);
System.out.println((new StringBuilder("For test----")).append(folder.getParent().getFullName()).toString());
if(folder == null)
throw new Exception("Invalid folder");
try
{
folder.open(2);
System.out.println((new StringBuilder("Folder name----")).append(folder.getFullName()).toString());
}
catch(Exception ex)
{
System.out.println((new StringBuilder("Folder Opening Exception..")).append(ex).toString());
}
}
public void closeFolder()
throws Exception
{
folder.close(false);
}
public int getMessageCount()
throws Exception
{
return folder.getMessageCount();
}
public int getNewMessageCount()
throws Exception
{
return folder.getNewMessageCount();
}
public void disconnect()
throws Exception
{
store.close();
}
public void printAllMessages()
throws Exception
{
Message msgs[] = folder.getMessages();
FetchProfile fp = new FetchProfile();
folder.fetch(msgs, fp);
for(int i = 0; i < msgs.length; i++)
dumpEnvelope(msgs[i]);
}
public static int saveFile(File saveFile, Part part) throws Exception {
BufferedOutputStream bos = new BufferedOutputStream( new FileOutputStream(saveFile) );
byte[] buff = new byte[2048];
InputStream is = part.getInputStream();
int ret = 0, count = 0;
while( (ret = is.read(buff)) > 0 ){
bos.write(buff, 0, ret);
count += ret;
}
bos.close();
is.close();
return count;
}
private static void dumpEnvelope(Message m) throws Exception
{
String body="";
String path="";
int size=0;
Object content = m.getContent();
if(content instanceof String){
body = (String)content;
}
else if(content instanceof Multipart)
{
Multipart mp = (Multipart)content;
for (int j=0; j < mp.getCount(); j++)
{
Part part = mp.getBodyPart(j);
String disposition = part.getDisposition();
//System.out.println("test disposition---->>"+disposition);
if (disposition == null) {
// Check if plain
MimeBodyPart mbp = (MimeBodyPart)part;
if (mbp.isMimeType("text/plain")) {
body += mbp.getContent().toString();
}
else if (mbp.isMimeType("TEXT/HTML")) {
body += mbp.getContent().toString();
}
else {
//unknown
}
} else if ((disposition != null) &&
(disposition.equals(Part.ATTACHMENT) || disposition.equals(Part.INLINE) || disposition.equals("ATTACHMENT") || disposition.equals("INLINE")) )
{
// Check if plain
MimeBodyPart mbp = (MimeBodyPart)part;
if (mbp.isMimeType("text/plain")) {
body += (String)mbp.getContent();
}
else if (mbp.isMimeType("TEXT/HTML")) {
body += mbp.getContent().toString();
}
else {
File savedir = new File(receiving_attachments);
savedir.mkdirs();
File savefile = new File(savedir+"\\"+part.getFileName());
path = savefile.getAbsolutePath();
size = saveFile( savefile, part);
}
}
}
}
}
public static void main(String args[])
{
try
{
MailfetchingPop3 gmail = new MailfetchingPop3();
gmail.setUserPass("your_gmail_Id", "your_gmail_mail_id_password");
gmail.connect();
gmail.openFolder("INBOX");
gmail.printAllMessages();
}
catch(Exception e)
{
e.printStackTrace();
System.exit(-1);
}
}
}
To run this java class you need to download javamail.jar and activation.jar