Here is my code which reads excelsheet files.but i can see my other functions are working fine but when try to get resource as url it return null.
URL resource = null;
try {
System.out.println(file3);
resource = getServletContext().getResource(file3);
System.out.println("Problem with getting resource"+resource);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
File file = null;
try {
System.out.println(resource.toURI());
file = new File(resource.toURI());
} catch (URISyntaxException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
FileInputStream input = null;
try {
input = new FileInputStream(file);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Workbook w;
w = Workbook.getWorkbook(input);
// Get the first sheet
Sheet sheet = w.getSheet(0);
return sheet;
Related
I am trying to write/read files in JavaFX while using the Gluon plugin, and I am not having any luck. If i run the program as a Desktop App, it works fine, I've even used the same functions in Android IDE and it works fine, however if I send the program to my phone with Gluon, it does not work. I wanting to know how to save/read to files in Gluon, and what have I done wrong, and why does it work as Desktop and on Android but not Gluon. The two fcns I used are:
public void writeToFile() {
try {
FileOutputStream f = new FileOutputStream("Meal1_Protein.txt");
f.write(choice.getBytes()); //Choice is input from a dropdown
f.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
Toast toast = new Toast(choice);
toast.show();
}
public void readFromFile(){
try {
FileInputStream f = new FileInputStream("Meal1_Protein.txt");
InputStreamReader is = new InputStreamReader(f);
BufferedReader br = new BufferedReader(is);
StringBuffer buff = new StringBuffer();
String lines;
while((lines = br.readLine())!=null){
buff.append(lines);
buff.append("\n");
}
carbInput.setText(buff.toString()); // inserting into a txtfield
//to see if it I can read strings back in.
Toast toast = new Toast(buff.toString());
toast.show();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
I am trying to use jgit to pull the changes from a git repository.
I am facing minor issues with HEAD DETACHED error when I do a pull
I have read other answers here on stackoverflow. Trying those solutions does not seem to help.
I have 2 remote branches
1. staging
2. master
Here is the sample code:
public static void main(String [] args){
final String GIT_STR = "https://github.com/newlifer2/testNewLiferRepo.git";
final String localRepositoryPath = new File("").getAbsolutePath() + File.separatorChar;
try{
//setting up local repository as just testNewLiferRepo
String repoName = localRepositoryPath + "testNewLiferRepo";
File f = new File(repoName);
Repository localRepo = new FileRepository(repoName + File.separatorChar + ".git");
ObjectId oldObjid = null;
Git git = null;
if (f.exists()) {
oldObjid = localRepo.resolve(Constants.HEAD);
git = Git.open(f);
git.pull().call();
ObjectId currentObjid = localRepo.resolve(Constants.HEAD);
git.getRepository().close();
} else {
git = Git.cloneRepository().setURI(GIT_STR).setDirectory(new File(repoName)).call();
ObjectId currentObjid =localRepo.resolve(Constants.HEAD);
if(!localRepo.getBranch().equalsIgnoreCase("staging")){
git.checkout().setName("refs/remotes/origin/staging").setForce(true).call();
}
git.getRepository().close();
}
} catch (InvalidRemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (TransportException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (GitAPIException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (RevisionSyntaxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (AmbiguousObjectException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IncorrectObjectTypeException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
You can update the version in the testXML file on the repository to test the pull.
Any pointers are highly appreciated
Thanks
Looks like I had my statements switched. Here is a new solution
public static void main(String [] args){
final String GIT_STR = "https://github.com/newlifer2/testNewLiferRepo.git";
final String localRepositoryPath = new File("").getAbsolutePath() + File.separatorChar;
SSHSessionFactory sessionFactory = new SSHSessionFactory();
sessionFactory.Initialize();
SshSessionFactory.setInstance(sessionFactory);
try{
//setting up local repository as just testNewLiferRepo
String repoName = localRepositoryPath + "testNewLiferRepo";
File f = new File(repoName);
Repository localRepo = new FileRepository(repoName + File.separatorChar + ".git");
ObjectId oldObjid = null;
Git git = null;
if (f.exists()) {
oldObjid = localRepo.resolve(Constants.HEAD);
git = Git.open(f);
Map<String,Ref> m = git.getRepository().getAllRefs();
System.out.println("Current Branch: "+git.getRepository().getBranch());
if(git.getRepository().isValidRefName("refs/remotes/origin/staging")){
System.out.println("Valid");
}
git.pull().call();
git.checkout().setName("staging").call();
ObjectId currentObjid = localRepo.resolve(Constants.HEAD);
git.getRepository().close();
} else {
git = Git.cloneRepository().setURI(GIT_STR).setDirectory(new File(repoName)).call();
ObjectId currentObjid =localRepo.resolve(Constants.HEAD);
if(!localRepo.getBranch().equalsIgnoreCase("staging")){
git.branchCreate().setForce(true).setName("staging").setStartPoint("refs/remotes/origin/staging").call();
}
git.checkout().setName("staging").call();
git.getRepository().close();
}
} catch (InvalidRemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (TransportException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (GitAPIException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (RevisionSyntaxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (AmbiguousObjectException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IncorrectObjectTypeException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
I am trying to read the InputStream from IHTTPSession.getInputStream() using the following code but its gives Socket TimeOut Exception every time.
private String readInStream(InputStream in){
StringBuffer outBuffer=new StringBuffer();
BufferedInputStream bis=new BufferedInputStream(in);
try {
while(bis.available()>0){
int ch= bis.read();
outBuffer.append((char)ch);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.e("DATA_Length", "outputBuffer :"+outBuffer.toString().length());
return outBuffer.toString();
}
i also tried the following Method but the same exception arises
private String readInStream(InputStream in){
String line="";
StringBuffer outBuffer=new StringBuffer();
BufferedReader rd=new BufferedReader(new InputStreamReader(in));
try {
while((line=rd.readLine()) != null){
outBuffer.append(line);
}
} catch (IOException e) {
Log.e("IOException", "IOException in readInStream:");
e.printStackTrace();
}
Log.e("DATA_Length", "outputBuffer :"+outBuffer.toString().length());
return outBuffer.toString();
}
Getting the content length from the header and reading up to it solved the problem.
Can confirm the accepted answer works (getting content length from the header and reading up to it). Here is some example code to turn the InputStream into a String:
try {
int contentLength = Integer.valueOf(session.getHeaders().get("content-length"));
String msg = new String(in.readNBytes(contentLength)); // the request body
} catch (IOException e) {
e.printStackTrace();
}
If you want to prevent a NullPointerException here, check whether the content-length header actually exists before parsing it to an integer.
How can I clear the HttpContext.Current.Request.Files list?
After the postback, this still contains the files.
protected void Page_Load(object sender, EventArgs e)
{
if (this.IsPostBack)
this.SaveImages();
}
private Boolean SaveImages()
{
//loop through the files uploaded
HttpFileCollection _files = HttpContext.Current.Request.Files;
//Message to the user
StringBuilder _message = new StringBuilder("Files Uploaded:<br>");
try
{
for (Int32 _iFile = 0; _iFile < _files.Count; _iFile++)
{
if (!string.IsNullOrEmpty(_files[_iFile].FileName))
{
// Check to make sure the uploaded file is a jpg or gif
HttpPostedFile _postedFile = _files[_iFile];
string _fileName = Path.GetFileName(_postedFile.FileName);
string _fileExtension = Path.GetExtension(_fileName);
//Save File to the proper directory
_postedFile.SaveAs(HttpContext.Current.Request.MapPath("files/") + _fileName);
_message.Append(_fileName + "<BR>");
}
}
lblFiles.Text = _message.ToString();
return true;
}
catch (Exception Ex)
{
lblFiles.Text = Ex.Message;
//Refill images in control????
return false;
}
finally
{
//Clear HttpContext.Current.Request.Files!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
}
}
I've recently tried to encrypt Saml2 assertion using relaying-party service public key. Unfortunately I can't finalise even the test phase
here is my code
public class EncryptionTest {
public static void main(String args[]){
try {
// The Assertion to be encrypted
FileInputStream fis;
DataInputStream in, in2;
File f = new File("src/main/resources/AssertionTest");
byte[] buffer = new byte[(int) f.length()];
in = new DataInputStream(new FileInputStream(f));
in.readFully(buffer);
in.close();
//Assertion = DataInputStream.readUTF(in);
String in_assert = new String(buffer);
System.out.println(in_assert);
org.apache.axiom.om.OMElement OMElementAssertion = org.apache.axiom.om.util.AXIOMUtil.stringToOM(in_assert);
Assertion assertion = convertOMElementToAssertion2(OMElementAssertion);
// Assume this contains a recipient's RSA public key
Credential keyEncryptionCredential;
keyEncryptionCredential = getCredentialFromFilePath("src/main/resources/cert.pem");
EncryptionParameters encParams = new EncryptionParameters();
encParams.setAlgorithm(EncryptionConstants.ALGO_ID_BLOCKCIPHER_AES128);
KeyEncryptionParameters kekParams = new KeyEncryptionParameters();
kekParams.setEncryptionCredential(keyEncryptionCredential);
kekParams.setAlgorithm(EncryptionConstants.ALGO_ID_KEYTRANSPORT_RSAOAEP);
KeyInfoGeneratorFactory kigf =
Configuration.getGlobalSecurityConfiguration()
.getKeyInfoGeneratorManager().getDefaultManager()
.getFactory(keyEncryptionCredential);
kekParams.setKeyInfoGenerator(kigf.newInstance());
Encrypter samlEncrypter = new Encrypter(encParams, kekParams);
samlEncrypter.setKeyPlacement(KeyPlacement.PEER);
EncryptedAssertion encryptedAssertion = samlEncrypter.encrypt(assertion);
System.out.println(encryptedAssertion);
} catch (EncryptionException e) {
e.printStackTrace();
} catch (CertificateException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (KeyException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (XMLStreamException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
}
public static Credential getCredentialFromFilePath(String certPath) throws IOException, CertificateException, KeyException {
InputStream inStream = new FileInputStream(certPath);
CertificateFactory cf = CertificateFactory.getInstance("X.509");
Certificate cert = cf.generateCertificate(inStream);
inStream.close();
//"Show yourself!"
System.out.println(cert.toString());
BasicX509Credential cred = new BasicX509Credential();
cred.setEntityCertificate((java.security.cert.X509Certificate) cert);
cred.setPrivateKey(null);
//System.out.println(cred.toString());
return cred;
//return (Credential) org.opensaml.xml.security.SecurityHelper.getSimpleCredential( (X509Certificate) cert, privatekey);
}
public static Assertion convertOMElementToAssertion2(OMElement element) {
Element assertionSAMLDOOM = (Element) new StAXOMBuilder(DOOMAbstractFactory.getOMFactory(), element.getXMLStreamReader()).getDocumentElement();
try {
UnmarshallerFactory unmarshallerFactory = Configuration.getUnmarshallerFactory();
Unmarshaller unmarshaller = unmarshallerFactory.getUnmarshaller(Assertion.DEFAULT_ELEMENT_NAME);
return (Assertion) unmarshaller.unmarshall(assertionSAMLDOOM);
} catch (Exception e1) {
System.out.println("error: " + e1.toString());
}
return null;
}
}
I constantly recive Null pointer exception in
KeyInfoGeneratorFactory kigf =
Configuration.getGlobalSecurityConfiguration()
.getKeyInfoGeneratorManager().getDefaultManager()
.getFactory(keyEncryptionCredential);
kekParams.setKeyInfoGenerator(kigf.newInstance());
How can I set GlobalSecurityConfiguration or is there different approach of encrypting Assertion which will work?
This question was laying open for too long. The problem was initialization of OpenSaml.
Simple
DefaultBootstrap.bootstrap();
helped and solved problem.