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  • XMLHttpRequest - JSON - .NET

    - by user318194
    I am trying to send JSON from my mozilla addon to my asp.net page. var myJSONObject = {"userName": una,"password": pass}; request = new XMLHttpRequest(); request.open("GET",http://www.google.com/jo=" + myJSONObject,true, null, null); on my .net page I have tried several ways of doing it but not able to find the best way to serialize and deserialize the code. All I need is to send the json data back n forth and parse it on C# n javascript. I am new to all this so any guidance and/or change in direction is appreciated.

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  • Best way to save complex Python data structures across program sessions (pickle, json, xml, database

    - by Malcolm
    Looking for advice on the best technique for saving complex Python data structures across program sessions. Here's a list of techniques I've come up with so far: pickle/cpickle json jsonpickle xml database (like SQLite) Pickle is the easiest and fastest technique, but my understanding is that there is no guarantee that pickle output will work across various versions of Python 2.x/3.x or across 32 and 64 bit implementations of Python. Json only works for simple data structures. Jsonpickle seems to correct this AND seems to be written to work across different versions of Python. Serializing to XML or to a database is possible, but represents extra effort since we would have to do the serialization ourselves manually. Thank you, Malcolm

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  • image with json and iphone

    - by alecnash
    Hi, I've got some images saved inside a db in a server and want to use them for my iphone. I created a php file so I can access them with json, got some questions though. I save all the text data from the db to a nsdictonary and it works fine. For the images should I use nsdata? Should I write a new php file for getting the image or is one enough because I am using an array to store my objects and then I use json_encode($arr) for json. Is it ok to store data to an array or is everything gonna crash?

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  • Google Maps integration with JSON - CircularReferenceError

    - by JZ
    I'm working on Rails 3.0.0.beta2, following Advanced Rails Recipes "Recipe #32, Mark locations on a Google Map" and I hit a road block. The following code is returning a "ActiveSupport::JSON::Encoding::CircularReferenceError" "object references itself" at line 3. This code represents the /layouts/maps.html.erb file <% if @maps -%> <script type="text/javascript"> var maps = <%= @maps.to_json %>; </script> <% end -%> This is my first attempt at rendering JSON, and I don't know how to debug this problem. Do you have experience with this? What could cause this problem? Thank you in advance!

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  • Populating fields, input types etc using JSON

    - by Franco
    I have a form that works as follows.. Server request builds XML of the data on server side and sends xml, XSL stylesheet then transforms the XML data into the plain html page distributing the data to the relevant/desired locations of the form on the page. Person can view page and edit the populated form, submit back to DB. I think JSON is more suitable for this from what I have read. The form itself is split into 3 areas, for me this is 3 maps/associative arrays etc each with a name related to the id of an input element etc. The problem for me comes with having the JSON sent to the page, what should I do with it next in order to achieve the same result as I currently get with XML and XSL. Thanks.

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  • ASP.NET MVC: Posting JSON to Controller

    - by JamesBrownIsDead
    I've got this in my controller: [HttpPost] public void UpdateLanguagePreference(string languageTag) { if (string.IsNullOrEmpty(languageTag)) { throw new ArgumentNullException("languageTag"); } ... } And have this jQuery code POSTing to the controller: jQuery.ajax({ type: 'POST', url: '/Config/UpdateLanguagePreference', contentType: 'application/json; charset=utf-8', data: '{ "languageTag": "' + selectedLanguage + '" }' }); When I try to the code, however, I get the error: Server Error in '/' Application. Value cannot be null. Parameter name: languageTag What's the problem? Isn't this how to POST JSON to an MVC Controller? I can examine the POST using Fiddler and see that the request is correct. For some reason, UpdateLanguagePreference() is getting a null or empty string.

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  • json object composition details

    - by Ethan
    in .json text, is the 'value' in a basic single pair object the title of a value type (e.g. [string, number, object]), or a value for a typed object (e.g. 2, or "dog", or Object3)? This is how http://www.json.org/ presents the information: "An object is an unordered set of name/value pairs. An object begins with { (left brace) and ends with } (right brace). Each name is followed by : (colon) and the name/value pairs are separated by , (comma)."

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  • Java Http request on api.stackexchange with json response

    - by taoder
    I'm trying to use the api-stackexchange with java but when I do the request and try to parse the response with a json parser I have an error. public ArrayList<Question> readJsonStream(InputStream in) throws IOException { JsonReader reader = new JsonReader(new InputStreamReader(in, "UTF-8")); reader.setLenient(true); try { System.out.println(reader.nextString()); // ? special character return readItem(reader); } finally { reader.close(); } } public ArrayList<Question> readItem(JsonReader reader) throws IOException { ArrayList<Question> questions = new ArrayList<Question>(); reader.beginObject(); while (reader.hasNext()) { System.out.println("here");//not print the error is before String name = reader.nextName(); if (name.equals("items")) { questions = readQuestionsArray(reader); } } reader.endObject(); return questions; } public final static void main(String[] args) throws Exception { URIBuilder builder = new URIBuilder(); builder.setScheme("http").setHost("api.stackexchange.com").setPath("/2.0/search") .setParameter("site", "stackoverflow") .setParameter("intitle" ,"workaround") .setParameter("tagged","javascript"); URI uri = builder.build(); String surl = fixEncoding(uri.toString()+"&filter=!)QWRa9I-CAn0PqgUwq7)DVTM"); System.out.println(surl); Test t = new Test(); try { URL url = new URL(surl); t.readJsonStream(url.openStream()); } catch (IOException e) { e.printStackTrace(); } } And the error is: com.google.gson.stream.MalformedJsonException: Expected literal value at line 1 column 19 Here is an example of the Json : { "items": [ { "question_id": 10842231, "score": 0, "title": "How to push oath token to LocalStorage or LocalSession and listen to the Storage Event? (SoundCloud Php/JS bug workaround)", "tags": [ "javascript", "javascript-events", "local-storage", "soundcloud" ], "answers": [ { "question_id": 10842231, "answer_id": 10857488, "score": 0, "is_accepted": false } ], "link": "http://stackoverflow.com/questions/10842231/how-to-push-oath-token-to-localstorage-or-localsession-and-listen-to-the-storage", "is_answered": false },... So what's the problem? Is the Json really malformed? Or did I do something not right? Thanks, Anthony

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  • JSON or YAML encoding in GWT/Java on both client and server

    - by KennethJ
    I'm looking for a super simple JSON or YAML library (not particularly bothered which one) written in Java, and can be used in both GWT on the client, and in its original Java form on the server. What I'm trying to do is this: I have my models, which are shared between the client and the server, and these are the primary source of data interchange. I want to design the web service in between to be as simple as possible, and decided to take the RESTful approach. My problem is that I know our application will grow substantially in the future, and writing all the getters, setters, serialization, factories, etc. by hand fills me with absolute dread. So in order to avoid it, I decided to implement annotations to keep track of attributes on the models. The reason I can't just serialize everything directly, using GWT's own one, or one which works through reflection, is because we need a certain amount of logic going on in the serialization process. I.e. whether references to other models get serialized during the serialization of the original model, or whether an ID is just passed, and general simple things like that. I've then written an annotation processor to preprocess my shared models and generate an implementing class with all the getters, setters, serialization, lazy-loading, etc. To make a long story short, I need some type of simple YAML or JSON library, which allows me to encode and decode manually, so I can generate this code through my annotation processor. I have had a look around the interwebs, but every single one I ran into supported some reflection which, while all fine and dandy, make it pretty much useless for GWT. And in the case of GWT's own JSON library, it uses JSNI for speed purposes, making it useless server side. One solution I did think about involved writing writing two sets of serialization methods on the models, one for the client and one for the server, but I'd rather not do that. Also, I'm pretty new to GWT, and even though I have done a lot of Java, it was back in the 1.2 days, so it's a bit rusty. So if you think I'm going about this problem completely the wrong way, I'm open to suggestions.

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  • programmatically creating property list from json to include an array

    - by Michael Robinson
    [{"memberid":"18", "useridFK":"30", "loginName":"Johnson", "name":"Frank", "age":"23", "place":"School", },] Someone else posted a similar question but without the fact that it was coming from a JSON deserialization. Quinn had some suggestions but it was confused about where to place/replace the following code (if it's correct): NSDictionary *item1 = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:@" member",[NSNumber numberWithInt:3],nil] forKeys:[NSArray arrayWithObjects:@"Title",@"View",nil]]; into this: NSData *jsonData = [jsonreturn dataUsingEncoding:NSUTF32BigEndianStringEncoding]; NSError *error = nil; NSDictionary * dict = [[CJSONDeserializer deserializer] deserializeAsDictionary:jsonData error:&error]; if (dict) { rowsArray = [dict objectForKey:@"member"]; [rowsArray retain]; } My Array.plist needs to look like the following: Root: Dictionary V Rows: Array V Item 0: Dictionary Title: String 18 V Children Array V Item 0 Dictionary Title String 30 etc. Thanks in advance. Every tutorial on JSON only shows a simple array being returned, never a 2-D..It's driving me crazy trying to figure this out.

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  • Issue on passing a checkbox set to an AppEngine script through jQuery Ajax/Json

    - by Jorge
    I have a set of checkboxes with multiple choice allowed. I parse the set this way: if ($("input[name='route_day']:checked").length > 0) { $("input[name='route_day']:checked").each(function(){ if(this.value != null) route_days_hook.push(this.value); }); dataTrap.route_days = $.JSON.encode(route_days_hook); } ...and pull the whole dataTrap to an AppEngine Python script via jQuery ajax. However, the Python script just bugs. If i change dataTrap.route_days value to a string instead of the JSON encoded object, everything works fine. My question is: how can i pass a checkbox set to the script using Ajax and still be able to iterate over it on the script?

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  • C / JSON Library in popular Linux distros?

    - by Tim Post
    I have a program written in C that has to input and output JSON over a local domain socket. I've found several C / JSON libraries that 'almost work' through searches. Prior to taking one of the libraries that I found .. I want to be sure that I'm not over-looking a library that is commonly found on modern Linux distros. I'd also really appreciate links to libraries that you use. Most likely, I'll just drop it in tree, unless I realize that I've over looked something widely distributed. I am tagging this as subjective because the answer that I select is the one linking to a library that works for me, that does not mean its the 'best' library. I want to take an existing array and easily convert it to a buffer that can be sent, or take a buffer and easily convert it into an allocated array. Thanks in advance!

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  • How to get Joomla users data into a json array

    - by sami
    $sql = "SELECT * FROM `jos_users` LIMIT 0, 30 "; $response = array(); $posts = array(); $result=mysql_query($sql); while($row=mysql_fetch_array($result)) { $id=$row['id']; $id=$row['name']; $posts[] = array('id'=> $title, 'name'=> $name); } $response['jos_users'] = $posts; $fp = fopen('results.json', 'w'); fwrite($fp, json_encode($response)); fclose($fp); I want to fetch the user id and name to the json file.i thought id did wrong code.can anyone correct it ?

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  • Exception while trying to deserialize JSON into EntityFramework using JavaScriptSerializer

    - by Barak
    I'm trying to deserialize JSON which I'm getting from an external source into an Entity Framework entity class using the following code: var serializer = new JavaScriptSerializer(); IList<Feature> obj = serializer.Deserialize<IList<Feature>>(json); The following exception is thrown: Object of type 'System.Collections.Generic.List1[JustTime.Task]' cannot be converted to type 'System.Data.Objects.DataClasses.EntityCollection1[JustTime.Task]'. My model is simple: The Feature class has a one-to-many relation to the Tasks class. The problem appears to be the deserializer is trying to create a generic List to hold the collection of tasks instead of an EntityCollection. I've tried implementing a JavaScriptConverted which would handle System.Collections.Generic.List but it didn't get called by the deserializer.

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  • How can I read JSON file from disk and store to array in Swift

    - by Ezekiel Elin
    I want to read a file from Disk in a swift file. It can be a relative or direct path, that doesn't matter. How can I do that? I've been playing with something like this let classesData = NSData .dataWithContentsOfMappedFile("path/to/classes.json"); And it finds the file (i.e. doesn't return nil) but I don't know how to manipulate and convert to JSON, the data returned. It isn't in a string format and String() isn't working on it.

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  • Sending JSON(jQuery) to PHP and decoding it

    - by dscher
    I can't for the life of me figure out what I'm doing wrong. It seems like it should be simple because I can't find anyone else with this issue but I can't figure out to send basic data via javascript(jQuery) to PHP and decode it. For the sake of simplicity, this is what I have: JAVASCRIPT var json_data = { "name" : "john doe" }; $.ajax({ type: "POST", url: "../bin/process.php", dataType: "json", data: json_data }); and my PHP FILE $arr = json_decode("json_data", true); $fp = fopen('data.txt', "w"); fwrite($fp, $arr['name']); fclose($fp); The file I'm writing ends up with nothing in it. If I do an: fwrite($fp, 'test'); I get a file with the word test in it but no matter what I do I don't get the json data I sent. Can someone please share a thorough example of A to Z. Thanks for any help.

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  • Sending JSON(jQuery) to PHP and decoding it

    - by dscher
    I can't for the life of me figure out what I'm doing wrong. It seems like it should be simple because I can't find anyone else with this issue but I can't figure out to send basic data via javascript(jQuery) to PHP and decode it. For the sake of simplicity, this is what I have: JAVASCRIPT var json_data = { "name" : "john doe" }; $.ajax({ type: "POST", url: "../bin/process.php", dataType: "json", data: json_data }); and my PHP FILE $arr = json_decode("json_data", true); $fp = fopen('data.txt', "w"); fwrite($fp, $arr['name']); fclose($fp); The file I'm writing ends up with nothing in it. If I do an: fwrite($fp, 'test'); I get a file with the word test in it but no matter what I do I don't get the json data I sent. Can someone please share a thorough example of A to Z. Thanks for any help.

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  • Twitter Trends API weekly.json causing error "Cannot use object of type stdClass as array"

    - by tucson
    I have the following PHP code: $ch = curl_init(); curl_setopt($ch, CURLOPT_URL,$URL); curl_setopt($ch, CURLOPT_RETURNTRANSFER,1); $result = curl_exec($ch); curl_close($ch); $obj = json_decode($result); foreach ($obj[0]->trends as $trend) echo utf8_decode($trend->name); which works fine for URL #1 (into the variable $URL): http://api.twitter.com/1/trends/1.json?exclude=hashtags but causes an error "Cannot use object of type stdClass as array" for URL #2: http://api.twitter.com/1/trends/weekly.json?exclude=hashtags I have searched for a while, but can't figure out a code to fix this and handle both URLs. Any help would be much appreciated.

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  • Decoding and caching json every 60 minutes

    - by Gary
    Hi, How do I do this on a php webpage? I want to get and decode a json string and display the results as html on my page, however, I don't want it hotlinking back to the source. If I could write the decoded string to a txt file say weather.txt on the server and keep the html formatting and do it so that the page won't fetch the json script until 60 minutes has passed since the last time it was fetched regardless of how many times the page is opened during that 60 minute period and the weather.txt is viewed. All I can come up with is a simple script that hotlinks, everything else I have tried simply failed. $file = file_get_contents('http://sample.com/weather'); $out = (json_decode($file)); echo $out-mainText; Will appreciate any help with this.

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  • Using jQuery or javascript to render json into multi-column table

    - by Scott Yu - UX designer
    I am trying to render a JSON into a HTML table. But the difficulty is making it so it loops through JSON and renders multiple columns if necessary. For the example below, what I want is this: Result wanted Result Wanted <table> <tr><th>AppName</th><td>App 1</td><td>App 2</td></tr> <tr><th>Last Modified</th><td>10/1/2012</td><td></td></tr> <tr><th>App Logo</th><td>10/1/2012</td><td></td></tr> blahblah </table> <table> <tr><th>AppName</th><td>App 1</td></tr> blahblah </table> JSON Example "Records": [ { "AppName": "App 1", "LastModified": "10/1/2012, 9:30AM", "ShipTo_Name": "Dan North", "ShipTo_Address": "Dan North", "ShipTo_Terms": "Dan North", "ShipTo_DueDate": "Dan North", "Items 1": [ { "Item_Name": "Repairs", "Item_Description": "Repair Work" } ] }, { "AppName": "App 2", "AppLogo": "http://www.google.com/logo.png", "LastModified": "10/1/2012, 9:30AM", "BillTo_Name": "Steve North", "Items 1": [ { "Item_Name": "Repairs", "Item_Description": "Repair Work" } ] } ], "Records": [ { "AppName": "App 1", "LastModified": "10/1/2012, 9:30AM", "ShipTo_Name": "222", "ShipTo_Address": "333 ", "ShipTo_Terms": "444", "ShipTo_DueDate": "5555", "Items 1": [ { "Item_Name": "Repairs", "Item_Description": "Repair Work" } ] } ], Code I am using now function CreateComparisonTable (arr,level,k) { var dumped_text = ""; if(!level) level = 0; //The padding given at the beginning of the line. var level_padding = ""; for(var j=0;j<level+1;j++) level_padding = "--"; if(typeof(arr) == 'object') { //Array/Hashes/Objects for (var item in arr) { var value = arr[item]; if (typeof(value) == 'object') { //If it is an array, if(item !=0) { dumped_text += '<tr><td>' + item + '<br>'; dumped_text += CreateComparisonTable(value,level+1); dumped_text += '</td></tr>'; } else { dumped_text += CreateComparisonTable(value,level, value.length); } } else { dumped_text += '<tr><td>' + level_padding + item + '</td><td>' + value + '</td></tr>'; } } } return dumped_text; } Jsfiddle here

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  • JSON DATA formatting in WebAPI

    - by user1736299
    public class CalendarController : ApiController { Events[] events = new Events[] { new Events { title= "event1", start = System.DateTime.UtcNow, end = System.DateTime.UtcNow }, new Events { title= "event2", start = System.DateTime.UtcNow, end = System.DateTime.UtcNow }, new Events { title= "event3", start = System.DateTime.UtcNow, end = System.DateTime.UtcNow} }; public IEnumerable<Events> GetAllCalendar() { return events; } The JSON result for the above is [{ "title": "event1", "start": "2012-12-05T22:52:35.6471712Z", "end": "2012-12-05T22:52:35.6471712Z"}, { "title": "event2", "start": "2012-12-05T22:52:35.6471712Z", "end": "2012-12-05T22:52:35.6471712Z"}, { "title": "event3", "start": "2012-12-05T22:52:35.6471712Z", "end": "2012-12-05T22:52:35.6471712Z" }]? How to create the same JSON result without the double quotes but single quote. How to get the date in the format of ‘YYYY-MM-DD HH:MM:SS’ Thank you, Smith

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  • POST data to permant json file using PHP

    - by doxsi
    using a url, my idea is the any user can post data. For example via http://myweb.com/index.php?name=Peter&surname=Brown Using the "jedwards" answer, present here , I am hable to create a json an d save it to a file. <? /* This needs to be at the top of your file, without ANYTHING above it */ session_start(); /* ... */ if(!array_key_exists('entries', $_SESSION)) { $_SESSION['entries'] = array(); } $_SESSION['entries'][] = array("name" => $_GET["name"], "surname" => $_GET["surname"]); $json_string = json_encode($_SESSION['entries']); My problem is taht his is not permant amongst different session or user. It work only on the same session. On different sessionthe json built start from the beginning. Any idea about that?

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  • POST serialized JSON object to a Coldfusion remote method instead of using FORM

    - by zarko.susnjar
    I have javascript object which consists of complex array of structures with nested structures of other javascript objects created dynamicaly on page etc. long story. I can't use form since my vars would be like 2_34_x_y_foo_bar_235423 due to the nature of UI. When I send that stringified object using GET .ajax request to a remote cfc method everything runs ok until JSON becomes 4000+ chars long, and usually it will be longer then that. When I use POST .ajax, I get 302 status and redirection to cfcexplorer. Is there some way I could "attach" object to a form and send my data as form submit, or some way to send JSON object as it is now using ajax call?

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