How to create a json file and its content - java

I am creating an Android module in react-native
I never worked with Java or writing code in Java
How can I complete the code below?
What I want
1- look and verify if the directory exist if it exist then remove it.
2- recreate the directory.
3- create a json file and add its content.
Here is what I got so far
#ReactMethod
public string write(string content) {
var folder = "NovelManager";
File path = Paths.get(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS), folder);
var fullPath = Paths.get(path, "NovelManager.backup.json");
makeDir(path);
File file = new File(path, "NovelManager.backup.json");
if (!file.exists())
file = file.createNewFile();
BufferedWriter out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), StandardCharsets.UTF_8));
out.write(content);
out.close();
return file.getAbsolutePath();
}
private void makeDir(string dirPath){
var dir = new File(dirPath);
if (!dir.exists())
dir.mkdir();
}
Update and solution
After to much hard work this did thing for me.
Here is the complete code for anyone who have similar problem.
// DownloadFileModule.java
package com.novelmanager;
import android.view.View;
import android.app.Activity;
import java.io.BufferedWriter;
import java.io.Console;
import java.io.File;
import java.io.FileWriter;
import android.os.Environment;
import java.io.OutputStreamWriter;
import java.io.FileOutputStream;
import java.nio.charset.StandardCharsets;
import com.facebook.react.bridge.NativeModule;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.bridge.ReactContext;
import com.facebook.react.bridge.UiThreadUtil;
import com.facebook.react.bridge.ReactContextBaseJavaModule;
import com.facebook.react.bridge.ReactMethod;
public class DownloadFileModule extends ReactContextBaseJavaModule {
#Override
public String getName() {
return "DownloadFileModule";
}
#ReactMethod(isBlockingSynchronousMethod = true)
public String write(String content) {
if (content == null || content == "")
return "";
try {
String folder = "NovelManager";
String fileName = "NovelManager.backup.json";
String downloadFolderPath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
.getPath();
String dirPath = compine(downloadFolderPath, folder);
File dir = new File(dirPath);
if (!dir.exists())
dir.mkdir();
String path = compine(downloadFolderPath, folder, fileName);
File file = new File(path);
if (!file.exists())
file.createNewFile();
BufferedWriter out = new BufferedWriter(
new OutputStreamWriter(new FileOutputStream(file), StandardCharsets.UTF_8));
out.write(content);
out.close();
return file.getPath();
} catch (Exception e) {
return e.getMessage();
}
}
private String compine(String... more) {
String url = more[0];
for (int i = 1; i < more.length; i++) {
String str = more[i];
if (str.startsWith("/"))
str = str.substring(1);
if (str.endsWith("/"))
str = str.substring(0, str.length() - 1);
if (url.endsWith("/"))
url = url.substring(0, url.length() - 1);
url = url + "/" + str; // relative url
}
return url; // relative url
}
DownloadFileModule(ReactApplicationContext reactContext) {
super(reactContext);
}
}


To delete directory
public boolean deleteDirectory(Path pathToBeDeleted) throws IOException {
Files.walk(pathToBeDeleted)
.sorted(Comparator.reverseOrder())
.map(Path::toFile)
.forEach(File::delete);
return !Files.exists(pathToBeDeleted);
}
To write to file
public void writeToFile(String content, File file) throws IOException {
Files.write(file.toPath(), content.getBytes());
}


You can use Apache FileUtils to perform all the required operations for e.g.
Reference : https://commons.apache.org/proper/commons-io/javadocs/api-2.5/index.html?org/apache/commons/io/FileUtils.html
FileUtils.cleanDirectory(path); //clean out directory (this is optional)
FileUtils.forceDelete(path); //delete directory
FileUtils.forceMkdir(path); //create directory
FileUtils.touch(file)); //create new file

Related

TestNG Unit Testing Tar and 7z

folder structure is here
console output is here
I'd like to write a test class for the 2 methods below
package jfe;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import org.apache.commons.compress.archivers.sevenz.SevenZArchiveEntry;
import org.apache.commons.compress.archivers.sevenz.SevenZFile;
import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
import org.apache.commons.compress.utils.IOUtils;
public class JThreadFile {
/**
* uncompresses .tar file
* #param in
* #param out
* #throws IOException
*/
public static void decompressTar(String in, File out) throws IOException {
try (TarArchiveInputStream tin = new TarArchiveInputStream(new FileInputStream(in))){
TarArchiveEntry entry;
while ((entry = tin.getNextTarEntry()) != null) {
if (entry.isDirectory()) {
continue;
}
File curfile = new File(out, entry.getName());
File parent = curfile.getParentFile();
if (!parent.exists()) {
parent.mkdirs();
}
IOUtils.copy(tin, new FileOutputStream(curfile));
}
}
}
/**
* uncompresses .7z file
* #param in
* #param destination
* #throws IOException
*/
public static void decompressSevenz(String in, File destination) throws IOException {
//#SuppressWarnings("resource")
SevenZFile sevenZFile = new SevenZFile(new File(in));
SevenZArchiveEntry entry;
while ((entry = sevenZFile.getNextEntry()) != null){
if (entry.isDirectory()){
continue;
}
File curfile = new File(destination, entry.getName());
File parent = curfile.getParentFile();
if (!parent.exists()) {
parent.mkdirs();
}
FileOutputStream out = new FileOutputStream(curfile);
byte[] content = new byte[(int) entry.getSize()];
sevenZFile.read(content, 0, content.length);
out.write(content);
out.close();
}
sevenZFile.close();
}
}
I use testNG and try to read from a folder, filter the folder for certain extensions (.tar and .7z) feed those files to the uncompress methods and compare the result to the actualOutput folder with AssertEquals. I manage to read the file names from the folder (see console output) but can't feed them to decompressTar(String in, File out). Is this because "result" is a String array and I need a String? I have no clue how DataProvider of TestNG handles data. Any help would be appreciated :) Thank you :)
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import org.testng.Assert;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
public class JThreadFileTest {
protected static final File ACT_INPUT = new File("c:\\Test\\TestInput\\"); //input directory
protected static final File EXP_OUTPUT = new File("c:\\Test\\ExpectedOutput\\"); //expected output directory
protected static final File TEST_OUTPUT = new File("c:\\Test\\TestOutput\\");
#DataProvider(name = "tarJobs")
public Object[] getTarJobs() {
//1
String[] tarFiles = ACT_INPUT.list(new FilenameFilter()
{
public boolean accept(File dir, String name)
{
return name.endsWith(".tar");
}
});
//2
Object[] result = new Object[tarFiles.length];
int i = 0;
for (String filename : tarFiles) {
result[i] = filename;
i++;
}
return result;
}
#Test(dataProvider = "tarJobs")
public void testTar(String result) throws IOException {
System.out.println("Running test" + result);
--> JThreadFile.decompressTar(result, TEST_OUTPUT);
Assert.assertEquals(TEST_OUTPUT, EXP_OUTPUT);
}
}

unable to unzip the zip file on linux environment

I am stuck in this issue very badly. I was trying to unzip the zip file using java. I need to upload a zip file using jsp. In controller it accepts Multipart file. Then I have to unzip this file to some location say a temp directory. I did mulipartFile.transferTo('temp zipfile location'), to place a zip file. Under this location zip file will always be replaced. This (zipcopy) would be the source of zip file to be unziped later.. below is code snippet..
String zipcopy = env.getProperty("zipFileCopier");
file.transferTo(new File(zipcopy));
file is of type Multipart.
This is running well on windows environment. No issues at all. I changed the path in application.properties for Linux environment. What I found is -- it is just NOT creating any unziped directories in temp directory. I call unzip code here :
unziputility.unzip(zipcopy, destTemp);
File extractedDir = new File(destTemp+File.separator+multipartFileName+File.separator+"local");
if(extractedDir!=null && extractedDir.exists() && extractedDir.isDirectory()) {
System.out.println("TEST");
//business logic
}
TEST is not getting printed in Linux env. Also note that above code is in try catch block with ex.printstackTrace method used. However no exception is seen caught. Here is my UnzipUtility class:
UnzipUtility
package abc.xyz.re.util;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import org.springframework.stereotype.Component;
#Component
public class UnzipUtility {
private static final int BUFFER_SIZE = 9096;
public void unzip(String zipFilePath, String destDirectory) throws IOException {
File destDir = new File(destDirectory);
if (!destDir.exists()) {
destDir.mkdir();
}
ZipInputStream zipIn = new ZipInputStream(new FileInputStream(zipFilePath));
ZipEntry entry = zipIn.getNextEntry();
while (entry != null) {
String entryName = entry.getName();
String filePath = destDirectory + File.separator + entryName;
if (!entry.isDirectory()) {
extractFile(zipIn, filePath);
} else {
File dir = new File(filePath);
dir.mkdirs();
}
zipIn.closeEntry();
entry = zipIn.getNextEntry();
}
zipIn.close();
}
private void extractFile(ZipInputStream zipIn, String filePath) throws IOException {
BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(filePath));
byte[] bytesIn = new byte[BUFFER_SIZE];
int read = 0;
while ((read = zipIn.read(bytesIn)) != -1) {
bos.write(bytesIn, 0, read);
}
bos.close();
}
}
above UnzipUtility when replaced with lingala zip4j..same issue. https://github.com/srikanth-lingala/zip4j.
application.properties
uploadDestTemp = /opt/temp
destDirectory = /opt/apache-tomcat-7.0.39/webapps/ROOT/root_/contents/crbt_tones
zipFileCopier = /opt/zip_download/zipfile.zip
in above application.properties file, uploadDestTemp is already created. Also zipFileCopier directory with zipfile.zip file is created
I re-tested this case by making sample code only for unziping the zip file from one location to other. Again it ran perfect in Windows. But failed in Linux. code below:
package package123;
public class Test4 {
public static void main(String[] args) {
System.out.println("testing...");
try {
UnzipUtility unzipUtility = new UnzipUtility();
String unzipLocation = "/opt/temp";
String zipFilePath = "/opt/zip_download/zipfile.zip";
unzipUtility.unzip(zipFilePath, unzipLocation);
}catch(Exception ex) {
ex.printStackTrace();
}
}
}
someone please help me to resolve this issue. kindly tell me why I am not able to use this code on my production Linux environment.

HTML parsing to file from directory with java and Jsoup

I am having trouble with parsing some html files from a directory into an output directory. I'm using Jsoup to remove HTML tags and writing to an output directory but some of the data is lost when I'm testing it. What I want to do in the end with the parsed files is to populate a hashmap so that I can sort the words by frequency and then in a separate directory sort them by alphabetical order. This compiles and runs, but I am getting stuck at the very end when it comes to write out. Code would be lovely and all, but I'm only interested in the steps to take in order to set this entire thing up. Thank you.
Update: Here is code.
Update: Also I feel like Jsoup is getting rid of data.
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Scanner;
import org.jsoup.Jsoup;
public class Parser {
public static File infolder = new File("input folder folder path goes here");
static String temp = "";
static ArrayList<String> list = new ArrayList<String>();
public static void main(String[] args) throws FileNotFoundException
{
String outfolder = "output folder path goes here";
File theDir = new File(outfolder);
// if the directory does not exist, create it
if (!theDir.exists()) {
System.out.println("creating directory: " + outfolder);
boolean result = theDir.mkdir();
if (result) {
System.out.println("DIR created");
}
}
System.out.println("Reading files under the folder " + infolder.getAbsolutePath());
parseFiles(infolder);
// System.out.println();
}
public static void parseFiles(final File folder) throws FileNotFoundException
{
PrintWriter out = null;
for (final File fileEntry : folder.listFiles()) {
if (fileEntry.isFile()) {
temp = fileEntry.getName();
if ((temp.substring(temp.lastIndexOf('.') + 1, temp.length()).toLowerCase()).equals("html")) {
System.out.println("File= " + folder.getAbsolutePath() + "\\" + fileEntry.getName());
File file = new File(folder.getAbsolutePath() + "\\" + fileEntry.getName());
ArrayList<String> filetext = new ArrayList<String>();
Scanner in = new Scanner(file);
while (in.hasNextLine()) {
filetext.add(in.nextLine());
}
String filename = "tokenfile" + fileEntry.getName();
try {
out = new PrintWriter(new BufferedWriter(new FileWriter("C:/Users/bounty213/Desktop/Output/" + filename + ".txt", true)));
}
catch (IOException e) {
//exception handling left as an exercise for the reader
}
String parsed;
for (String word : filetext) {
parsed = Jsoup.parse(word).text();
System.out.println(parsed);
out.println(parsed);
}
out.close();
}
}
}
}
}

How to add Progress bar to File Copy in Java

so I have class that is used to copy all of a specific file type from one directory to another directory. This class does work, but I am curious on what would be the best method of adding a progress bar to let the users know how far along in copying all the files.
So my question is, what would be the best method of adding a progress bar to this class. As you may see, there is no GUI being made by this class as it stands.
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
public class CopyFilesFromType
{
public static void main(File SourcePath, File DestPath)
{
new CopyFilesFromType().copy("tif", SourcePath.toString(), DestPath.toString());
}
private FileTypeOrFolderFilter filter = null;
private void copy(final String fileType, String fromPath, String outputPath)
{
filter = new FileTypeOrFolderFilter(fileType);
File currentFolder = new File(fromPath);
File outputFolder = new File(outputPath);
scanFolder(fileType, currentFolder, outputFolder);
}
private void scanFolder(final String fileType, File currentFolder, File outputFolder)
{
System.out.println("Scanning folder [" + currentFolder + "]...");
File[] files = currentFolder.listFiles(filter);
for (File file : files) {
if (file.isDirectory()) {
scanFolder(fileType, file, outputFolder);
} else {
copy(file, outputFolder);
}
}
}
private void copy(File file, File outputFolder)
{
try {
System.out.println("\tCopying [" + file + "] to folder [" + outputFolder + "]...");
InputStream input = new FileInputStream(file);
OutputStream out = new FileOutputStream(new File(outputFolder + File.separator + file.getName()));
byte data[] = new byte[input.available()];
input.read(data);
out.write(data);
out.flush();
out.close();
input.close();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private final class FileTypeOrFolderFilter implements FileFilter
{
private final String fileType;
private FileTypeOrFolderFilter(String fileType)
{
this.fileType = fileType;
}
public boolean accept(File pathname)
{
return pathname.getName().endsWith("." + fileType) || pathname.isDirectory();
}
}
}

Wrap the FileInputStream in a javax.swing.ProgressMonitorInputStream.

file upload in FileNet?

I'm writing code to upload a file in FileNet.
A standalone java program to take the some inputs, and upload it in FileNet. I'm new to FileNet. Can you help me out, How to do it?

You can use Document.java provided by IBM for your activities and many other Java classes
package fbis.apitocasemanager;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import com.user.DocumentUtil;
public class Addfilescasemanager {
/**
* #param args
*/
public static void addfiles_toicm(String directory, String lFolderPath)
{
try {
DocumentUtil.initialize();
String path = directory;
System.out.println("This is the path:..............................."
+ path);
String file_name;
File folder = new File(directory);
File[] listOfFiles = folder.listFiles();
for (int i = 0; i < listOfFiles.length; i++)
{
if (listOfFiles[i].isFile())
{
file_name = listOfFiles[i].getName();
System.out.println(file_name);
String filePaths = directory + file_name;
// File file = new File("C:\\FNB\\att.jpg");
File file = new File(filePaths);
InputStream attStream = null;
attStream = new FileInputStream(file);
DocumentUtil.addDocumentWithStream(lFolderPath, attStream,
"image/jpeg", file_name, "Document");
}
}
} catch (FileNotFoundException e)
{
e.printStackTrace();
}
}//end of method
public static void addfile_toicm(File file_name, String lFolderPath)
{
try {
DocumentUtil.initialize();
InputStream attStream = null;
attStream = new FileInputStream(file_name);
DocumentUtil.addDocumentWithStream(lFolderPath, attStream,
"image/jpeg", file_name.getName(), "Document");
System.out.println("File added successfully");
} catch (Exception e)
{
System.out.println(e.getMessage());
}
}//end of method
public static void main(String nag[])
{
addfiles_toicm("E:\\FSPATH1\\BLR_14122012_001F1A\\","/IBM Case Manager/Solution Deployments/Surakshate Solution for form 2/Case Types/FISB_FactoriesRegistration/Cases/2012/12/06/16/000000100103");
}
}
and my DocumentUtil class is
package com.user;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import javax.security.auth.Subject;
import com.filenet.api.collection.ContentElementList;
import com.filenet.api.constants.AutoClassify;
import com.filenet.api.constants.AutoUniqueName;
import com.filenet.api.constants.CheckinType;
import com.filenet.api.constants.DefineSecurityParentage;
import com.filenet.api.constants.RefreshMode;
import com.filenet.api.core.Connection;
import com.filenet.api.core.ContentTransfer;
import com.filenet.api.core.Document;
import com.filenet.api.core.Domain;
import com.filenet.api.core.Factory;
import com.filenet.api.core.Folder;
import com.filenet.api.core.ObjectStore;
import com.filenet.api.core.ReferentialContainmentRelationship;
import com.filenet.api.util.UserContext;
public class DocumentUtil {
public static ObjectStore objectStore = null;
public static Domain domain = null;
public static Connection connection = null;
public static void main(String[] args)
{
initialize();
/*
addDocumentWithPath("/FNB", "C:\\Users\\Administrator\\Desktop\\Sample.txt.txt",
"text/plain", "NNN", "Document");
*/
File file = new File("E:\\Users\\Administrator\\Desktop\\TT.txt");
FileInputStream fis = null;
try {
fis = new FileInputStream(file);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
addDocumentWithStream("/FNB", fis, "text/plain", "My New Doc", "Document");
}
public static void initialize()
{
System.setProperty("WASP.LOCATION", "C:\\Progra~1\\IBM\\WebSphere\\AppServer\\profiles\\AppSrv01\\installedApps\\P8Node01Cell\\FileNetEngine.ear \\cews.war\\WEB-INF\\classes\\com\\filenet\\engine\\wsi");
System.setProperty("SECURITY.AUTH.LOGIN.CONFIG",
"C:\\Progra~1\\IBM\\WebSphere\\AppServer\\profiles\\AppSrv01\\installedApps\\P8Node01Cell\\FileNetEngine.ear\\client-download.war\\FileNet\\Download\\dap501.153\\jaas.conf.wsi");
System.setProperty(":SECURITY.AUTH.LOGIN.CONFIG",
"C:\\Progra~1\\IBM\\WebSphere\\AppServer\\profiles\\AppSrv01\\installedApps\\P8Node01Cell\\FileNetEngine.ear\\client-download.war\\FileNet\\Download\\dap501.153\\jaas.conf.wsi");
System.setProperty("java.security.auth.login.config","C:\\Progra~1\\IBM\\WebSphere\\AppServer\\java\\jre");
connection = Factory.Connection.getConnection(CEConnection.uri);
Subject sub = UserContext.createSubject(connection,
com.user.CEConnection.username, CEConnection.password,
CEConnection.stanza);
UserContext.get().pushSubject(sub);
domain = Factory.Domain.getInstance(connection, null);
objectStore = Factory.ObjectStore.fetchInstance(domain, "TARGET", null);
System.out.println("\n\n objectStore--> " + objectStore.get_DisplayName());
}
public static void addDocumentWithPath(String folderPath, String filePath,
String mimeType, String docName, String docClass) {
Folder folder = Factory.Folder.fetchInstance(objectStore,
folderPath, null);
System.out.println("\n\n Folder ID: " + folder.get_Id());
// Document doc = Factory.Document.createInstance(os, classId);
Document doc = CEUtil.createDocWithContent(new File(filePath), mimeType,
objectStore, docName, docClass);
doc.save(RefreshMode.REFRESH);
doc = CEUtil.createDocNoContent(mimeType, objectStore, docName, docClass);
doc.save(RefreshMode.REFRESH);
CEUtil.checkinDoc(doc);
ReferentialContainmentRelationship rcr = CEUtil.fileObject(objectStore, doc, folderPath);
rcr.save(RefreshMode.REFRESH);
}
public static void addDocumentWithStream(String folderPath,
InputStream inputStream, String mimeType,
String docName, String docClass) {
Folder folder = Factory.Folder.fetchInstance(objectStore,
folderPath, null);
System.out.println("\n\n Folder ID: " + folder.get_Id());
// Document doc = Factory.Document.createInstance(os, classId);
Document doc = Factory.Document.createInstance(objectStore, null);
ContentElementList contEleList = Factory.ContentElement.createList();
ContentTransfer ct = Factory.ContentTransfer.createInstance();
ct.setCaptureSource(inputStream);
ct.set_ContentType(mimeType);
ct.set_RetrievalName(docName);
contEleList.add(ct);
doc.set_ContentElements(contEleList);
doc.getProperties().putValue("DocumentTitle", docName);
doc.set_MimeType(mimeType);
doc.checkin(AutoClassify.AUTO_CLASSIFY, CheckinType.MAJOR_VERSION);
doc.save(RefreshMode.REFRESH);
ReferentialContainmentRelationship rcr = folder.file(doc,
AutoUniqueName.AUTO_UNIQUE, docName,
DefineSecurityParentage.DO_NOT_DEFINE_SECURITY_PARENTAGE);
rcr.save(RefreshMode.REFRESH);
/*
doc.save(RefreshMode.REFRESH);
doc = CEUtil.createDocNoContent(mimeType, objectStore, docName, docClass);
CEUtil.checkinDoc(doc);
ReferentialContainmentRelationship rcr = CEUtil.fileObject(objectStore, doc, folderPath);
rcr.save(RefreshMode.REFRESH);
*/
}
public static ObjectStore getObjecctStore()
{
if (objectStore != null) {
return objectStore;
}
// Make connection.
com.filenet.api.core.Connection conn = Factory.Connection
.getConnection(CEConnection.uri);
Subject subject = UserContext.createSubject(conn,
CEConnection.username, CEConnection.password, null);
UserContext.get().pushSubject(subject);
try {
// Get default domain.
Domain domain = Factory.Domain.getInstance(conn, null);
// Get object stores for domain.
objectStore = Factory.ObjectStore.fetchInstance(domain, "TARGET",
null);
System.out.println("\n\n Connection to Content Engine successful !!");
} finally {
UserContext.get().popSubject();
}
return objectStore;
}
}

The above answer is extremely good. Just wanted to save people some time but I don't have the points to comment so am adding this as an answer.
Eclipse wasted a lot of my time getting the above to work because it suggested the wrong classes to import. Here's the list of correct ones:
import com.filenet.api.collection.ContentElementList;
import com.filenet.api.constants.AutoClassify;
import com.filenet.api.constants.AutoUniqueName;
import com.filenet.api.constants.CheckinType;
import com.filenet.api.constants.DefineSecurityParentage;
import com.filenet.api.constants.RefreshMode;
import com.filenet.api.core.Document;
import com.filenet.api.core.ObjectStore;
import com.filenet.api.core.ContentTransfer;
import com.filenet.api.core.Folder;
import com.filenet.api.core.Factory;
import com.filenet.api.core.ReferentialContainmentRelationship;

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