Millions of developers and companies build, ship, and maintain their software on GitHub — the largest and most advanced development platform in the world. To process json data in VBA, there are very few choices. ' ============ This can easily be done in VBA code, but it is more than 100 times quicker to have a RegEx pattern match what we need. We use essential cookies to perform essential website functions, e.g. However, this gets tricky, especially for generic json that you are not looking at when you craft your VBA routine, and especially for deeply nested json. So how do we process json data in VBA?
There are no routines included here to create a json string from your data. Learn more, JSON HTTP POST Request In Visual Basic .NET.
i encountered a problem to using button to post the json to the website. It produces a dictionary where the dictionary keys are full textual paths to every data value in the source json string, making access a breeze. Take the following tiny json string as an example: We can list every path, key and data item like so: The above uses a helper function, ListPaths(). '----------------------- they're used to gather information about the pages you visit and how many clicks you need to accomplish a task. It processes the source json string into a list of tokens and that list of tokens is what is actually parsed by the recursive functions above. Nuxt — Creating Custom Directives For Static & SRR Sites. 'Dim dictData As New Dictionary(Of String, Object) Private apikey_favoriot As String = "YOUR API KEY HERE". Instantly share code, notes, and snippets. Learn more. What are Methods & Properties in JavaScript? But we can do it in VBA and it can be small, fast, and easy to use: Of course, the above uses a few helper routines (included below), but I wanted to show how concise the logic is. It will raise a runtime error if the json is invalid. Thank you very much! In a similar vein, all escaped characters are untouched. Problem deserializing JSON data with JSON.NET using results from Google geocoding. Great work, thanks a lot. Private urlToPost As String = "" Imports System.Net ' But they do! You signed in with another tab or window. But I cannot find Request.AddBody method in my WebRequest class. Thank you so much!!!!!!!! Learn more, Cannot retrieve contributors at this time, ' VBJSON is a VB6 adaptation of the VBA JSON project at http://code.google.com/p/vba-json/, ' Some bugs fixed, speed improvements added for VB6 by Michael Glaser (vbjson@ediy.co.nz), ' parse string / number / object / array / true / false / null, ' Array BoDy, Integer BaseCount, String PoSition, ' String PointBuffer1, String PointBuffer2, ' multiArray = multiArray & toString(Eval("aBD(" & sPB2 & ")")), 'Public Function JsonRpcCall(url As String, methName As String, args(), Optional user As String, Optional pwd As String) As Object, ' Set r = CreateObject("Scripting.Dictionary"), ' Set cli = CreateObject("MSXML2.XMLHTTP.6.0"), ' If Len(user) > 0 Then ' If Not IsMissing(user) Then, ' cli.Open "POST", url, False, user, pwd, ' cli.setRequestHeader "Content-Type", "application/json", ' Err.Raise vbObjectError + INVALID_RPC_CALL + cli.Status, , cli.statusText, ' If r("id") <> reqId Then Err.Raise vbObjectError + INVALID_RPC_CALL, , "Bad Response id", ' If r.Exists("error") Or Not r.Exists("result") Then, ' Err.Raise vbObjectError + INVALID_RPC_CALL, , "Json-Rpc Response error: " & r("error")("message"), ' If Not r.Exists("result") Then Err.Raise vbObjectError + INVALID_RPC_CALL, , "Bad Response, missing result". It is easy for machines to parse and generate. The data types can be converted by your code easily if you need or want that. The following Tokenize() function uses VBScript’s regex engine to do the heavy lifting: Granted, the regex matching pattern looks intimidating, but it is actually extremely efficient. curl -X POST --header 'Content-Type: application/json' We use optional third-party analytics cookies to understand how you use GitHub.com so we can build better products. Sign in to view.
Evaluation of a json string can be a security liability because Javascript’s eval() function has access to the hard drive. This liability can be mostly limited by utilizing Crockford’s JSON2.js, but now the process of having Javascript parse the json string is even more convoluted and in the end eval() is still used to create actual Javascript objects from the json, but only after a bunch of checks to ensure that the json will not do anything untoward. At first glance it does not appear that the three main functions listed at the top actually do much. A makeshift tactic that many have used is to fire up the Script Control or the Webbrowser control or automate a silent instantiation of Internet Explorer with the aim of having Javascript executed in those environments evaluate the json string and through a convoluted process make key/value pairs of data available to VBA. The only other option is to write your own VBA routine to parse out the values from a json string or file. Learn more, We use analytics cookies to understand how you use our websites so we can make them better, e.g. Function ParseJSON(json$, Optional key$ = "obj") As Object, obj.data.receipt_time --> 2018-09-28T10:00:00.000Z, MsgBox dic("obj.data.measures(0).metrics(0).temp(2)") '<--displays: 5, Function RExtract(s$, Pattern, Optional bGroup1Bias As Boolean, Optional bGlobal As Boolean = True), '-------------------------------------------------------------------, Easily Parse JSON With The Powerful Jackson ObjectMapper, Build your own data persist plugin for Vuex, JavaScript Best Practices — Things to Avoid. --header 'Accept: application/json' JSON (JavaScript Object Notation) is a lightweight data-interchange format. -d '{ The service - which I control - currently can return a SOAP/XML message or JSON. 'dictData.Add("test_key", "test_value") 'PM> Install-Package Newtonsoft.Json -Version 6.0.8, 'Dim jsonPost As New JsonPost("http://192.168.254.104:8000") Learn more, We use analytics cookies to understand how you use our websites so we can make them better, e.g. Encoding.Default.GetBytes(JsonConvert.SerializeObject(dictData. They are scant, really. This code also does not attempt to convert values into data types. For more information, see our Privacy Statement. Please let me know your thoughts in the comments. And finally, this code just parses JSON. GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together. When given a source json string (and it does not matter if the string is pretty-printed, normal, or minified), it instantly (less than a millisecond) matches the bits we want and transforms the entire string into the tokenized array listing shown above. How do I deserialize json using json.net 3.5 release 8 and .NET compact 3.5. }' Vb.net deserialize json. It is easy for humans to read and write. So I tried to use Request.AddBody method as shown in Tim's example.
Also, the code does not attempt to build complex objects in VBA. They work because ParseObj() and ParseArr() are recursive… which means they can and do call themselves and each other, over and over, as they work through the entire json string. So how do we process json data in… It is included below, but the simple code here prints the following in the VBEditor Immediate Window: And you can get at any item by using the full path: You might be wondering how this is even possible. they're used to log you in. Finally, all samples i found were missing something for the API i am trying, this worked beautiful. So here is the full listing of our VBA JSON Parser including support functions: This code makes no attempt to verify if the source json is valid. ; Updated: 4 Apr 2020 And there is nothing built into VBA, like the Javascript function, JSON.parse(). We use optional third-party analytics cookies to understand how you use GitHub.com so we can build better products. You can always update your selection by clicking Cookie Preferences at the bottom of the page. It is extremely fast.
But if you don’t know PQ, this can be quite intimidating. Solved a problem for me immediately where I spent hours trying to do a post request with json post data and additional headers. I am trying to POST a URL encoded JSON string a web service. So the Tokenize() function eliminates all nonessential white space, removes quotes from quoted items (but leaves all escaped characters in place) and isolates every token. i was updating my script from python to vb and this help me very well. And there is nothing built into VBA, like the Javascript function, JSON.parse(). ' link : https://apiv2.favoriot.com/v2/streams, Imports Newtonsoft.Json 'https://apiv2.favoriot.com/v2/streams', 'Install Newtonsoft.json It’s really simple, here is the sample code : [code]let url = URL(string: "http://yoururl/get_json.php")! Copy link alecoronel commented Mar 29, 2015. GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together. Solved a problem for me immediately where I spent hours trying to do a post request with json post data and additional headers. The above json looks like the following after being tokenized (every line in the following listing is an element in the array returned): And then from that array, the recursive functions are able to compile the paths, keys and data values and add them to the dictionary. this curl post can manage to post data to the website. Imports System.Text, Public Class Form1 It takes less than a second to process a megabyte-sized file. "data": { "temperature": "31","humidity": "70"} There will be unusual edge cases where this breaks, but I’ve tested it on hundreds of json files, from simple to deeply nested and it has never failed yet. You can always update your selection by clicking Cookie Preferences at the bottom of the page. This comment has been minimized. This example return the body of the response, what can i do if i also want the head of the response? So far I cannot figure out what I need to do to get VB6 to play with returned objects. There are indeed a few great VBA libraries, VBA-JSON for example, that can be loaded into your project that will parse json, allowing easy access to the data. Instead every single full path including the final key is stored AS TEXT in the dictionary as a dictionary key to the actual data item.
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