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How to efficiently manage files on a filesystem in Java?

由 余生颓废 提交于 2019-12-09 06:54:52
问题 I am creating a few JAX-WS endpoints, for which I want to save the received and sent messages for later inspection. To do this, I am planning to save the messages (XML files) into filesystem, in some sensible hierarchy. There will be hundreds, even thousands of files per day. I also need to store metadata for each file. I am considering to put the metadata (just a couple of fields) into database table, but the XML file content itself into files in a filesystem in order not to bloat the

save string to file

由 末鹿安然 提交于 2019-12-09 06:24:33
问题 I've got a iteration (in my view): (1..@count.to_i).each do |i| ...doing things... @bigtable << @result[0..result.length-2] end Every @result is a string. @bigtable has every @result from iterations. Now what I want: I want to save content from the @bigtable (after clickin a button) to .csv file (and choose where to save it on my hdd). And I want do it like every @result from @bigtable is in its own single line, like this (pseudo code): @result string from @bigtable[0] @result string from

How to specify file and path to save a file with R-shiny and shinyFiles?

由 孤人 提交于 2019-12-09 04:59:08
问题 I am working with R (shiny) and want to save a dataframe as an excel file. For this purpose I use the "shinyFiles" package so that the user can specify where the excel file is to be stored: server.R library(shiny) library(shinyFiles) shinyServer(function(input, output, session) { ## ShinyFiles : get the user favorite directory volumes=c(home = '~/'), shinyDirChoose(input, 'dir', roots=volumes, filetypes = c('','xlsx')), output$dir.res <- renderPrint({parseDirPath(volumes, input$dir)}), ##

Saving an NSDictionary of NSArrays of custom objects

由 空扰寡人 提交于 2019-12-09 04:30:31
I have a dictionary (it's mutable if that makes a difference) which contains nsarrays, which in turn contain (subclass of NSObject)s I have implemented initWithCoder and encodeWithCoder like this: -(id)initWithCoder:(NSCoder *)aDecoder { self = [super init]; self.Title = [aDecoder decodeObjectForKey:@"Title"]; self.SiteAPIURL = [aDecoder decodeObjectForKey:@"SiteAPIURL"]; self.ID = [aDecoder decodeObjectForKey:@"ID"]; return self; } -(void) encodeWithCoder:(NSCoder *)aCoder { [aCoder encodeObject:self.Title forKey:@"Title"]; [aCoder encodeObject:self.SiteAPIURL forKey:@"SiteAPIURL"]; [aCoder

save richtextbox to file C#

由 感情迁移 提交于 2019-12-09 01:26:25
问题 I am having trouble saving from richtextbox to .txt file here is the code: if (richTextBox1.Text != String.Empty) { string dir = @"c:\\logs\\" + DateTime.Today.ToString("dd_MMM_yy"); string path = @"c:\\logs\\" + DateTime.Today.ToString("dd_MMM_yy") + "\\" + DateTime.Now.ToString("HH.mm.ss") + ".txt"; if (!Directory.Exists(dir)) { Directory.CreateDirectory(dir); } if (!File.Exists(path)) { File.Create(path); richTextBox1.SaveFile(path, RichTextBoxStreamType.RichText); } } else MessageBox.Show

Android Persist Data After Uninstall

由 杀马特。学长 韩版系。学妹 提交于 2019-12-09 00:30:43
问题 I have to persist 2 strings for my application even after the application is uninstalled. Regarding that the end users don't have SD cards for their devices and they don't have internet connection, how could I persist those 2 strings even after the app is uninstalled? I would highly appreciate any response. Thanks 回答1: Unless you're targeting VERY old phones, you don't need to worry about not having external storage. As long as you use Environment.getExternalStorageDirectory() as your

Manipulating Data in Django's Admin Panel on Save

由 浪子不回头ぞ 提交于 2019-12-08 22:40:58
问题 Ok, so here's the skinny: # models.py class Article( models.Model ): title = models.CharField( max_length = 255 ) author = models.ForeignKey( User ) published_at = models.DateTimeField( auto_now_add = True ) body = models.TextField( ) def __unicode__( self ): return self.title # admin.py from hpccoe.news.models import Article from django.contrib import admin from django import forms from django.forms import widgets class ArticleAdminForm( forms.ModelForm ): title = forms.CharField( max_length

Detaching a Fragment not triggering onSaveInstanceState()

由 最后都变了- 提交于 2019-12-08 19:34:25
问题 My Android application has an ActionBar that changes which Fragment occupies a certain FrameLayout . I am trying to use onSaveInstanceState to save the state of a Fragment when the tab is changed, so that it can be recovered in onCreateView . The problem is, onSaveInstanceState is never called. The Fragment 's onDestroyView and onCreateView methods are called, but the Bundle supplied to onCreateView remains null. Can someone please explain to me when onSaveInstanceState is actually called,

Saving Backbone model and collection to JSON string

由 本小妞迷上赌 提交于 2019-12-08 19:28:48
问题 I'm having problem saving Backbone.Model or Backbone.Collection objects to local storage. The problem is that when it saves, only the attributes gets saved and I do not want that. I'm actually using the backbone-localstorage thats provided in their sample TODO demo. This is their save function save: function() { localStorage.setItem(this.name, JSON.stringify(this.data)); } When I look at what JSON.stringify(this.data) returns, I see only the models or the collection's attributes gets sets. Is

Save Image in Gallery

由 不问归期 提交于 2019-12-08 18:24:50
问题 This is my code and I want the save image button to simply save the image to the gallery. package com.nk_apps.hip.hop.lyric.wallpapers; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.ImageView; public class Wallpapers extends Activity implements OnClickListener { } ImageView display; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto
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