- Reading and writing BSON is also faster than JSON which makes it a superset of JSON. More information can be found in this link. JSON.NET supports reading and writing binary JSON (BSON). In this article we will use Netwonsoft.Json package to work with JSON Serialization and Deserialization operations.
- The ConvertTo-Json cmdlet converts any object to a string in JavaScript Object Notation (JSON) format. The properties are converted to field names, the field values are converted to property values, and the methods are removed. You can then use the ConvertFrom-Json cmdlet to convert a JSON-formatted string to a JSON object, which is easily managed in PowerShell.
- PM Install-Package Newtonsoft.Json As an aside, I'm using JSON data for the first time with a recent prioject, and it's remarkably easy with the Newtonsoft stuff: serialize and deserialize a whole list of a custom class in one line of code each!
- This sample deserializes JSON retrieved from a file.
As you can see, the Json example is almost identical to the Xml example, with the exception of using the JsonIgnore attribute instead of XmlIgnore. Writing and Reading an object to / from a Json file (using the JavaScriptSerializer in the System.Web.Extensions assembly) There are many Json serialization libraries out there.
-->Syntax
Description
The
ConvertTo-Json
cmdlet converts any object to a string in JavaScript Object Notation (JSON)format. The properties are converted to field names, the field values are converted to propertyvalues, and the methods are removed.You can then use the
ConvertFrom-Json
cmdlet to convert a JSON-formatted string to a JSONobject, which is easily managed in PowerShell.Many web sites use JSON instead of XML to serialize data for communication between servers andweb-based apps.
This cmdlet was introduced in Windows PowerShell 3.0.
Examples
Example 1
This command uses the
ConvertTo-Json
cmdlet to convert a GregorianCalendar object to aJSON-formatted string.Example 2
This example shows the output from
ConvertTo-Json
cmdlet with and without the -AsArray
https://renewcali104.weebly.com/blog/win-myanmar-font-download. switchparameter. You can see the second portion of the output is wrapped in array brackets.Example 3
This command shows the effect of using the
-Compress
parameter of ConvertTo-Json
. Thecompression affects only the appearance of the string, not its validity.Example 4
This example uses the
ConvertTo-Json
cmdlet to convert a System.DateTime object from theGet-Date
cmdlet to a JSON-formatted string. The command uses the Select-Object
cmdlet to getall (*
) of the properties of the DateTime object. The output shows the JSON string thatConvertTo-Json
returned.Example 5
This example shows how to use the
ConvertTo-Json
and ConvertFrom-Json
cmdlets to convert anobject to a JSON string and a JSON object.Parameters
-AsArray
Outputs the object in array brackets, even if the input is a single object.
Type: | SwitchParameter |
Position: | Named |
Default value: | None |
Accept pipeline input: | False |
Accept wildcard characters: | False |
Omits white space and indented formatting in the output string.
Type: | SwitchParameter |
Position: | Named |
Default value: | None |
Accept pipeline input: | False |
Accept wildcard characters: | False |
Specifies how many levels of contained objects are included in the JSON representation. The defaultvalue is 2.
Type: | Int32 |
Position: | Named |
Default value: | 2 |
Accept pipeline input: | False |
Accept wildcard characters: | False |
Provides an alternative serialization option that converts all enumerations to their string representation.
Type: | SwitchParameter |
Position: | Named |
Default value: | None |
Accept pipeline input: | False |
Accept wildcard characters: | False |
Controls how certain characters are escaped in the resulting JSON output. By default, only controlcharacters (e.g. newline) are escaped.
Type: | NewtonSoft.Json.StringEscapeHandling |
Position: | Named |
Default value: | Default |
Accept pipeline input: | False |
Accept wildcard characters: | False |
Specifies the objects to convert to JSON format. Enter a variable that contains the objects, or typea command or expression that gets the objects. You can also pipe an object to
ConvertTo-Json
.The InputObject parameter is required, but its value can be null (
$null
) or an empty string.When the input object is $null
, ConvertTo-Json
does not generate any output. When the inputobject is an empty string, ConvertTo-Json
returns an empty string.Type: | Object |
Position: | 0 |
Default value: | None |
Accept pipeline input: | True (ByValue) |
Accept wildcard characters: | False |
Inputs
System.Object Seagate barracuda 7200 driver.
You can pipe any object to
ConvertTo-Json
.Outputs
System.String
Notes
The
ConvertTo-Json
cmdlet is implemented using Newtonsoft Json.NET.Related Links
JSON is the standard data format that be used to save and transfer text data between programs. It is independent from programming language. Python provide built-in json module to process JSON string and Python object conversion. This article will give you some example.
1. JSON String And Python Object Conversion Overview.
Before you can use json module, you should import it first. Dmv ca registration renewal.
1.1 Convert Dict Object To JSON String.
- Create a dict object.
- Call json.dumps() method to get JSON string from dict object.Below is the output.
1.2 Convert JSON String To Dict Object.
- Create a JSON string.
- Call json.loads() method to return the python dict object.Below is the output.
2. Dump Python Dict To JSON File Or Load Dict From JSON File.
2.1 Dump Dict To JSON File.
- Call open method to get a file object.
- Call json.dump(dict_object, file_object) to save dict data to JSON file.When you execute above code, you can find the teacher_data.json file in current execution folder.
2.2 Load JSON File Data To Python Dict.
- Create a python file object by open method.
- Call json.load method to retrieve the JSON file content to a python dict object.
3. Python Class Instance Serialize And Deserialize.
Serialize Json To A File
Besides serialize/deserialize Python dict object between JSON string or file. We can also dump / load any Python class instance between JSON string or file.
Serialize Json To File C#
3.1 Dump Python Class Instance To JSON String.
- Create a python class.
- Add a method which can return a python dict object based on the class instance.
- Call json.dumps(class_instance, default=self.teacher_to_dict) method and set the convert method name in step 2 to parameter default. If do not set the default parameter value, it will throw TypeError: Object of type ‘Teacher’ is not JSON serializable error.
3.2 Load JSON String To Python Class Instance.
- Create a python class.
- Add a method which can return a class instance from loaded python dict object.
- Call json.loads(json_string, object_hook=self.dict_to_teacher) method and pass the method name in step 2 to the object_hook parameter.
3.3 Dump Python Class Instance To JSON File.
Newtonsoft Json Serialize To File C#
It is similar with steps in 3.1. The difference is you should call json.dump(class_instance, file_object, default=self.teacher_to_dict) method.
3.4 Load JSON File String To Python Class Instance.
It is similar with steps in 3.2. The difference is you should call json.load(file_object, object_hook=self.dict_to_teacher) method.