Hi I have am trying to implement a file upload in my application where the file uploaded is parsed and an entry is created in the database using that information.
def save = {
def file = request.getFile("file");
def filename = file.getOriginalFilename();
def type = filename.split('\\.');
if(!file.isEmpty()){
if(type[1] == "properties"){
redirect(action:"parsePropertyFile", params:params);
}
}
}
def parsePropertyFile = {
println "\n"
println params.file;
println "\n";
def f = params.file;
println f;
def filename = f.getOriginalFilename();
println filename;
}
when I print out f this is output:
org.springframework.web.multipart.commons.CommonsMultipartFile#29d32df9
but when I try to call getOriginalFilename() on f I get the following error:
groovy.lang.MissingMethodException: No signature of method:
java.lang.String.getOriginalFilename() is applicable for argument types: () values: []
I also printed out file from the save function and the output of that is also:
org.springframework.web.multipart.commons.CommonsMultipartFile#29d32df9
so why am I getting the error?
Instead of redirecting, can you just call your another function? Redirect will issue an http redirect with the file as param with no need.
if(type[1] == "properties") {
parsePropertyFile(file)
}
And then:
private def parsePropertyFile(def file) {
String filename = file.getOriginalFilename();
...
}
In your parsePropertyFile action you aren't getting a File object, you're getting the String from params. Just like in your save action, you need to do
def f = request.getFile('file')
println f.getOriginalFilename()
Related
I am trying to parse a groovy file using config slurper like this .
fileContents = '''deployment {
deployTo('dev') {
test = me
}
}'''
def config = new ConfigSlurper().parse(fileContents)
The above code works because the deployto('dev') is simply accepting a string. But I add an extra parameter to it , it fails with this exception:
fileContents = '''deployment {
deployTo('dev','qa') {
test = me
}
}'''
def config = new ConfigSlurper().parse(fileContents)
It fails with the following exception :
Caught: groovy.lang.MissingMethodException: No signature of method: groovy.util.ConfigSlurper$_parse_closure5.deployTo() is applicable for argument types: (java.lang.String, java.lang.String, script15047332444361539770645$_run_closure3$_closure10) values: [dev, postRun, script15047332444361539770645$_run_closure3$_closure10#6b8ca3c8]
Is there a way around reading this config file with extra args in a module?
You are almost there. In order to use list of values, please do the below change.
From:
deployTo('dev','qa')
To:
deployTo(['dev','qa'])
It would be:
def fileContents = '''deployment { deployTo(['dev','qa']) { test = me } }'''
def config = new ConfigSlurper().parse(fileContents)
I have one action in my controller that upload csv file with list of numbers.
Now the process is first I need to delete existing data from the table on certain condition then insert fresh data.
My snippet code is as follows..
Controller:
#Transactional
def uploadFile() {
if(!params?.updateExisting){
println "Going to call service to delete records"
myService.deleteNumbers()
def newList = Number.findAllByDeleted(false)
println "NEW LS:"+newList
//HERE I'm GETTING BLANK
}
def file = request.getFile("fileCsv")
file.inputStream
.splitEachLine(',') { fields ->
Number.withNewTransaction {
def number = fields[0]?.toString().replaceAll(" ","").replaceAll("-","")
Number numberInstance = new Number()
def numberExist = Number.findAllByNumberAndDeleted(number, false)
//HERE NUMBER IS STILL EXIST
if(!numberExist){
numberInstance.number = number
numberInstance.save(flush:true)
count++
}else{
println "Number exist: "+number
}
}
}
redirect(uri:'/number/list')
}
myService:
#Transactional
def deleteNumbers(){
Number.findAll().each {
it.deleted = true
it.save(flush: true)
}
}
After calling service method deleteNumbers I'm getting blank list NEW LS:[], But then def numberExist = Number.findAllByNumberAndDeleted(number, false) returns me a number means already exist.
Thanks..
Try removing Number.withNewTransaction closure. Your code should work..
I recently started working on grails and i want to know how to get the
extension of a file. Ex: test.txt. I want to check extension(txt)?
any clue?
Here's another way. Using a regular expression.
def fileName = 'something.ext'
def matcher = (fileName =~ /.*\.(.*)$/)
if(matcher.matches()) {
def extension = matcher[0][1]
if(extension in ['jpg', 'jpeg', 'png']) {
// Good to go
println 'ok'
} else {
println 'not ok'
}
} else {
println 'No file extension found'
}
The question asks how to get the file extension.
With groovy, the following operation will give you the file extension of any file name:
def fileName = ...
def fileExt = fileName - ~/.*(?<=\.)/
The accepted answer goes a bit further and tries to check for specific file extensions. You can use the match operator ==~ to do this as well:
assert fileName ==~ ~/.*(?<=\.)(txt|jpe?g|png)/
This assertion will work provided the file name ends with one of the supplied extensions.
Also noticed that groovy can do positive lookbehind using (<?\.)
Hope i found the answer of my Question. How to find the extension
of a file.
String fileName = "something.ext";
int a = fileName.lastIndexOf(".");
String extName = fileName.substring(a);
System.out.println(fileName.substring(a));
ArrayList<String> extList = new ArrayList<String>();
extList.add("jpg");
extList.add("jpeg");
extList.add("png");
if(extList.contains(extName))
{
System.out.println("proceed");
}
else{
System.out.println("throw exception");
}
Lsat comment at this post
I have a web app that uploads files to file system and show them in a list. I am trying to delete the item with a button. I know I need to get the path of the directory file to be able to delete it and I believe this is where I am stuck:
def delete = {
def doc = Document.get(params.id)
def path = Document.get(path.id)
doc.delete(path)
redirect( action:'list' )
}
error I am getting: No such property: path for class: file_down.DocumentController Possible solutions: flash
It seems to me def path = Document.get(path.id) is wrong, in that case how do we find the path of a document ?
This is my upload method where I upload the files, assign it to a specific filesize, date, and fullPath( which is the uploaded folder)
def upload() {
def file = request.getFile('file')
if(file.empty) {
flash.message = "File cannot be empty"
} else {
def documentInstance = new Document()
documentInstance.filename = file.originalFilename
documentInstance.fullPath = grailsApplication.config.uploadFolder + documentInstance.filename
documentInstance.fileSize = file.getSize() / (1024 * 1024)
documentInstance.company = Company.findByName(params.company)
if (documentInstance.company == null) {
flash.message = "Company doesn't exist"
redirect (action: 'admin')
}
else {
file.transferTo(new File(documentInstance.fullPath))
documentInstance.save()
redirect (action:'list', params: ['company': params.company])
}
}
}
I think you have an error in this line:
def path = Document.get(path.id)
You try to get path.id from the path variable you are just declaring.
I'm pretty sure that you mean
def path = new File(doc.fullPath)
path.delete() // Remove the file from the file-system
doc.delete() // Remote the domain instance in DB
Alternative:
class Document {
// Add this to your Document domain
def beforeDelete = {
new File(fullPath).delete()
}
}
and then you could just do this in your controller:
def delete = {
def doc = Document.get(params.id)
doc.delete() // Delete the domain instance in DB
redirect( action:'list' )
}
I am using a plugin that uploads files as a CommonsMultipartFile. The upload works fine, but I am trying to use another plugin to read the files header (the mp3 header) but it will not take CommonsMultipartFile, only regular files. Is there a way to either convert the CommonsMultipartFile to a file or have some other work around. I've tried copying the file from where it gets uploaded from, but it doesn't seem to work. here is what i have so far:
if (request instanceof MultipartHttpServletRequest) {
MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest)request;
CommonsMultipartFile file = (CommonsMultipartFile)multiRequest.getFile("files");
moveFile(file)
}
private moveFile(CommonsMultipartFile file){
def userId = getUserId()
def userGuid = SecUser.get(userId.id).uid
def webRootDir = servletContext.getRealPath("/")
def userDir = new File(webRootDir, "/myUsers/${userGuid}/music")
userDir.mkdirs()
file.transferTo( new File( userDir,file.originalFilename))
def myFile = new File( "/myUsers/${userGuid}/music/" + file.originalFilename)
AudioFile audioFile = AudioFileIO.read(file);
//AudioFile is expecting a file, not a CommonsMultipartFile
}
When i do this, though, i get this error:
groovy.lang.MissingMethodException: No signature of method: static org.jaudiotagger.audio.AudioFileIO.read() is applicable for argument types: (org.springframework.web.multipart.commons.CommonsMultipartFile) values: [org.springframework.web.multipart.commons.CommonsMultipartFile#10a531]
Thanks
jason
Your code copied MultiPart file to a File, but still used Multipart file for AudioFileIO.
It must be like:
private moveFile(CommonsMultipartFile file){
def userId = getUserId()
def userGuid = SecUser.get(userId.id).uid
def webRootDir = servletContext.getRealPath("/")
def userDir = new File(webRootDir, "/myUsers/${userGuid}/music")
userDir.mkdirs()
File myFile = new File( userDir,file.originalFilename)
file.transferTo(myFile)
//
// !!!!!! you have to pass myFile there
//
AudioFile audioFile = AudioFileIO.read(myFile)
}