appropriate JSON data, mainly in the following ways:(1) String ToJson (jsonelement jsonelement);(2) String ToJson (Object src);(3) String ToJson (Object src, Type typeofsrc);Wherein, method (1) is used to convert the Jsonelement object (can be jsonobject, Jsonarray, etc.) into JSON data; method (2) is used to serialize the specified object object into the corresponding
": 2,"Code": "0101"},{"ActualCount": 2,"Code": "0101"}],"JsonID": "BD6D7FDA-54D2-468b-A3DE-9D5FBDB78207"}
C) Parse and generate JSON code
. H file to be introduced
[Html]View plaincopy
# Pragma once
# Pragma comment (lib, "json_vc71_libmtd.lib ")
# Include "json/json. h"Implementation[Cpp]View plaincopy
Vo
separated by a comma. The element can be any value. For example, the following array contains a string, number, Boolean, and null:
["abc",12345,false,null]
The object is in JSON{}Contains a series of unordered key-value pairs. In fact, the object here is equivalentMapInstead of Java class. Note that the key can only be represented by string.
For example, an address object contains the following key-value:
City: Beijing street
Conversion between JSON strings and objects
This article describes how to convert JSON strings and objects. For more information, see
JSON (JavaScript Object Notation) is a subset of JavaScript programming languages. JSON is a subset of JavaScript, so it can be clearly used in this language.
Eval function
represent data in JSON, and then we will also work out how to generate JSON-formatted data on the server side for sending to the client, and how the client uses JavaScript to process data in JSON format.Let's discuss how to process JSON data in a Web page with JavaScript. W
the JavaScript object notation syntax.
Data in name/value pairs
Data is separated by commas
Curly braces Save Object
Square brackets Save Array
The four JSON values:The JSON value can be:
Number (integer or floating point)
String (in double quotes)
Logical value (TRUE or FALSE)
Array (in square brackets)
Object (in curly braces)
Null
Five
and dump. The only difference between the two functions is that dump converts a python object to a json object to generate a fp file stream, while dumps generates a string:
The use of other parameters is the same. The following are some learning code snippets:
dic1 = {'type':'dic1','username':'loleina','age':16}json_dic1 = json.dumps(dic1)print json_dic1json_dic2 = json.dumps(dic1,sort_keys=True,indent =
= new car ("Dodge", "Coronet R/T", 1968, "yellow ");VaR pars = "Car =" + Carr. tojsonstring (); VaR url = "/mywebapp/jsontest1"VaR mailajax = new Ajax. Request (URL,{Method: 'get ',Parameters: pars,Oncomplete: jsonresponse});}JSON request string can be used to generate and parse jsonobject, modify servlet to add JSON processing (
name and address objects, and can perform samples such as the following:{"Name": "Michael", "address": {"City": "Beijing", "Street": "Chaoyang Road", "Postcode": 100025}}JavaScript Processes JSON DataThe above describes how to use JSON to represent data, and then we will also work out how to generate JSON-formatted da
Conversion between JSON strings and objects.
JSON (JavaScript Object Notation) is a subset of JavaScript programming languages. JSON is a subset of JavaScript, so it can be clearly used in this language.
Eval function JSON text conversion to object
To convert JSON text to an
of code.4. It takes resources and time for the server and client to parse XML
[JSON]In addition to the XML format, there are no other formats. There is a lightweight data exchange format called JSON (JavaScript Object Notation) that can replace XML.
Advantages:1. The data format is relatively simple, easy to read and write, the format is compressed, and the bandwidth usage is small2. It is easy to parse th
schema form technology to automatically generate API documentation and test pages for various rest or soap APIs. At the same time, when the parameters of the API change, such as the new parameter fields, the documentation and testing tools for these APIs will be updated automatically.Automatic API Document GenerationAutomated API test Page generationThe unified model CDIF created for the cloud service API
common classes:
JsonFactory: this class is the main factory method of the Jackson project. It is mainly used to configure and build a parser (such as JsonParser) and a generator (such as JsonGenerator). This factory instance is thread-safe, if any configuration is available, you can use it again.
JsonGenerator: this class is mainly used to generate content in Json format. We can use the JsonFactory method
As we all know, Jackson JSON is known for its speed, convenience and agility. The previous article described the use of annotations as a way to specify how to serialize an object to JSON and how to deserialize a JSON data onto an object. But the one thing that's in the ointment is the handling of Chinese. Of course I said it was a drawback. By default, the Jackso
those symbols.
Another advantage of JSON is its non verbose nature. In XML, it is necessary to open and close tags in order to satisfy markup compliance, and in JSON all these requirements can be satisfied with just a simple parenthesis. In data interchange with hundreds of fields, traditional XML tags will extend the data exchange time
In addition, JSON is favo
). Refer to the reference link at the end of the article for what is claim.{ "sub": "1234567890", "name": "Linianhui"}This JSON is Base64 encoded by the 2nd part of the eyjzdwiioiixmjm0nty3odkwiiwibmftzsi6imxpbmlhbmh1asj9.4.3 SignatureThis section is optional, because the previous header and payload sections are clear text, so the meaning of this part is to protect the information from tampering, and generate
the class to turn the JSON string, it's a good match).
then we generate the Get/set method for all the member variables.
the Student.java we generate are as follows:
Package Com.bean;
/**
* student/public
class Student {
private int age;//age
private String gender;//sex, male/ Female
private String grades;//class
private string name;//name
(stream mode). High-performance, low-overhead sequential access. This is the lowest-level approach, equivalent to the SAX and Stax APIs used to process XML. All packages must have such analyzers inside, but not all of them are public.
Tree-based Data schema (JSON DOM). A tree is a natural conceptual model that describes JSON content, so many packages provide
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