filereader

Work around for Html5 Local File Access

由 安稳与你 提交于 2019-12-12 07:19:27
问题 We are currently looking at porting a enterprise silverlight application over to html5. The major roadblock that we have hit is the ability to open files from the user's local disk. Currently they have a document library which just links to files on their computer that they can open from within the app and view or print out. All that I read is that you can only access the local sandbox of the web app with the html5 file api's. We want to load these files from code. Does anyone know of any

How to load the contents of a local text file by name using Javascript and HTML 5?

由 流过昼夜 提交于 2019-12-12 05:38:22
问题 Working in Chrome, loading a local html or JS file. I found many examples of how to load a file that is selected using the Choose File input. However, didn't figure out how to do it given a file name without using the Choose File input. The Choose File input returns a File object. How to create the File object without the Choose File input? From the File API: new File( Array parts, String filename, BlobPropertyBag properties ); But didn't figure out what the parts and properties would be.

Javascript filereader onload ( get file from server )

由 故事扮演 提交于 2019-12-12 05:00:02
问题 What I want is to read a file from the windows file system or a server so I can display the contents on the website and we are not allowed to use a database or PHP only Javascript. What I currently have is beneath this and it works if I get the file from a html file upload box the only thing I need is how do I get a file in the javascript without inserting it manually but to load on pageload. The rest of the code works if I insert the file manually I only need to get a file and insert it into

How can we enhance performance using hooking?

由 ぐ巨炮叔叔 提交于 2019-12-12 02:25:25
问题 the Java Docs says Java Docs public class BufferedReader extends Reader Reads text from a character-input stream, buffering characters so as to provide for the >efficient reading of characters, arrays, and lines. The buffer size may be specified, or the default size may be used. The default is large >enough for most purposes. In general, each read request made of a Reader causes a corresponding read request to be >made of the underlying character or byte stream. It is therefore advisable to

java根据json数据GUI生成图片

由 三世轮回 提交于 2019-12-12 00:11:36
需求 具体就是根据json数据，生成这样一个图片。说到json,json就是json格式的一堆字符串，我们通过读取解析这段json字符串获取有用的数据。以上就是需要通过json数据在图上进行添加文件或者图片。 思路 json:使用json解析框架对json格式进行解析 使用Graphics2D技术进行绘图 上码 读取本地json文件 /** * 读取json文件，返回json串 * @param fileName * @return */ public static String readJsonFile ( String fileName ) { String jsonStr = "" ; try { File jsonFile = new File ( fileName ) ; FileReader fileReader = new FileReader ( jsonFile ) ; Reader reader = new InputStreamReader ( new FileInputStream ( jsonFile ) , "utf-8" ) ; int ch = 0 ; StringBuffer sb = new StringBuffer ( ) ; while ( ( ch = reader . read ( ) ) != - 1 ) { sb . append (

Progressive Upload and Encryption with CryptoJS

由 自闭症网瘾萝莉.ら 提交于 2019-12-11 23:19:59
问题 The goal here is to upload a file, encrypt it at the client side, and send the file and its attributes via AJAX to myphpscript.php. To allow larger files, I want to upload in slices using the FileReader slice method and progressively encrypt the slices using the methods described on the CryptoJS site (https://code.google.com/p/crypto-js/). My code below runs, but only ends up storing a a small portion of the intended entire encrypted file. Can I progressively upload and encrypt in the way I

Reading two matrices from one text file [closed]

由 会有一股神秘感。 提交于 2019-12-11 19:15:54
问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 7 years ago . This is a long one. I have a very odd problem. I need to read two matrices from a text file, multiply them together, and then print out the result. That

Javascript Read From Text File

由 安稳与你 提交于 2019-12-11 18:55:47
问题 I have recently gotten into html, css, and javascript and am writing a simple website. I need to have an autocomplete textbox. I have a textfile in the same folder as the html and need to read the textfile by newline in order to set the autocomplete sources (i can do that). What i can't do (yet) is get the file text. I have seen examples with the FileReader() but all of them use the a file object like this.files[0] or from a <input type=file> object event. How can I use a string for the file

Reading Structured File in Java

由 萝らか妹 提交于 2019-12-11 18:35:05
问题 I have written code for reading a structured file in Java, and extracting the line contents to create objects (of type Person). The file has the following structure: [personNumber], [personName], [personAge], for example 0, Sherlock Holmes, 44 1, Harry Potter, 17 2, Jack Sparrow, 50 ... The code for reading the file and extracting the information is: RandomAccessFile rf = new RandomAccessFile(fileName, "rw"); String line; File myFile = new File(fileName); scan = new Scanner(myFile); String[]

How to read data from a SQLite database table?

由 守給你的承諾、 提交于 2019-12-11 18:24:11
问题 I have a database table, my goal is to read in each of the values from the data table, then write them to a text file to be emailed. How should I go about accomplishing this? public void FileWrite() { Cursor remindersCursor = mDbHelper.fetchAllReminders(); startManagingCursor(remindersCursor); try { // catches IOException below String[] from = new String[]{RemindersDbAdapter.KEY_TITLE}; final String TESTSTRING = new String(RemindersDbAdapter.KEY_TITLE + " "); File sdCard = Environment
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