, the JavaScript program can use the built-in eval () function to generate native JavaScript objects with JSON data without a parser.2. JSONGrammarJSON syntax is a subset of JavaScript syntax.2.1 JSON Syntax rulesJSON syntax is a subset of the JavaScript object notation syntax.
Data in name/value pairs
Data is separated by commas
Curly braces Sav
) {
//exception handling code
}
The following is a standard JSON request implementation process:
HttpPost request = new HttpPost (URL);
First encapsulates a JSON object
jsonobject param = new Jsonobject ();
Param.put ("name", "Rarnu");
Param.put ("Password", "123456");
Bind to request Entry
stringentity se = new stringentity (param.tostring ());
Request.setentity (SE);
Send Reque
via eval ();
C. Support multiple languages, including ActionScript, C, C #, ColdFusion, Java, JavaScript, Perl, PHP, Python, Ruby and other server-side languages, easy server-side resolution;
D. In the PHP world, there have been Php-json and json-php appeared, biased in PHP after the serialization of the program direct call, PHP server-side objects, arrays, etc. can directly
large number of letters and want to see my Chinese characters and letters, then you can continue.Simple translation of this comment:See http://www.JSON.org/js.htmlThis file creates a global object JSON that contains two methods. The methods are as follows:Copy content to clipboard
Code:
JSON.stringify(value, whitelist)
Any JavaScript value of value, usually an object or ArrayWhitelist is an optional array parameter used to determine how object values
";
})
For a generic JS to generate a JSON object, simply replace the $.each () method with the For statement, the other unchanged.
The JSON string returned by the server
For the JSON string returned by the server, if the jquery asynchronous request sets the type (typically this configuration property) to "
-formatted data */public static String Changearraydatetojson (arraylistAfter you have written a good method, you can refer to it as follows:
Import java.util.ArrayList;
Import android.app.Activity;
Import Android.os.Bundle;
Import Android.util.Log;
Import Android.view.View;
public class Mainactivity extends activity {
@Override
protected void onCreate (Bundle savedinstancestate) {
super.oncreate (savedinstancestate);
Setcontentview (r.layout.main);
Findviewbyid (r.id.test). Setonclick
Introduction to JSON
JSON (JavaScript Object Notation) is a lightweight data interchange format. It is based on a subset of ECMAScript. JSON takes a completely language-independent text format, but also uses a similar idiom to the C language family (c, C + +, C #, Java, JavaScript, Perl, Python, and so on). These features make
As we all know, JSON is a data format unrelated to the platform, so it is also recognized by the majority of programmers. At present, third-party LIB in various JSON formats are emerging one after another, just like Spring Festival, in the face of this, how should we choose? First, let's compare the current problems... syntaxHighlighter. all (); as we all know, JSON
response string, this is also a 12 String retSrc = EntityUtils data saved in JSON format. toString (httpResponse. getEntity (); 13 // generate JSON object 1 4 JSONObject result = new JSONObject (retSrc); 15 String token = result. get ("token"); The following is a small example of modifying others by yourself. It mainly adds comments and explanations. This exampl
handling code
}
The following is a standard JSON request implementation process:
HttpPost request = new HttpPost (URL);
First encapsulates a JSON object
jsonobject param = new Jsonobject ();
Param.put ("name", "Rarnu");
Param.put ("Password", "123456");
Bind to request Entry
stringentity se = new stringentity (param.tostring ());
Request.setentity (SE);
Send Request
HttpResponse Ht
1,swiftyjson Introduction and ConfigurationSwiftyjson is an open source library that is written in the swift language, allowing us to easily process JSON data (parse data, generate data).GitHub Address: Https://github.com/SwiftyJSON/SwiftyJSONUse configuration: Direct Swiftyjson.swift added to the project.
Advantages of 2,swiftyjsonCompared to Nsjsonserializationswiftyjson, when you get the
As we all know, JSON is a data format unrelated to the platform, so it is also recognized by the majority of programmers. At present, third-party LIB in various JSON formats are emerging one after another, just like Spring Festival, in the face of this, how should we choose? First, let's compare the current performance of the JSON Parsing Library:
. Obviously, JSON is better.
Of course, you cannot always control the server to generate data for Ajax programs. You can also use a third-party server to provide XML output instead of the server. In addition, if the server exactly provides JSON, are you sure you want to use it?
In the code, it is worth noting that you pass the response text directly to the eval.
the carefully read these sources, there will be more harvest,) as follows:The Python2.6 version supports JSON encoding and decoding, supporting most of Python's built-in types and JSON conversions. The simplest example is as follows:>>>Import json>>> data = {"Spam" :"Foo","parrot42}>>> in_json = Json.dumps (data) # Encode the Data>>> In_json ' {"parrot": "Spam":
ObjectiveBefore reading this article, you can also go to the ASP. NET Web API 2 series navigation to view http://www.cnblogs.com/aehyok/p/3446289.htmlThis article describes the JSON and XML formatters in the ASP.In the ASP. NET Web API, the media type formatter (Media-type Formatter) is an object that can do the following:
Reading CLR (Common language Runtime) objects from the HTTP message body
Writing CLR objects to the HTTP message body
situation occurs, panic is not allowed.
In actual application, I encountered the above problem. Therefore, I wrote a json parsing file to support automatic type conversion. Code open source at github: https://github.com/polaris1119/jsonutilsIII. performance problems
Obviously, the json codec uses the Go reflection function. Therefore, the performance is naturally not very good. because of this, open-sourc
commas. 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 represented by a series of unordered key-value pairs in JSON. In fact, the object here is equivalent to the Map
{ Quot; City quot;: quot; Beijing quot;, quot; Street quot;: quot; Chaoyang Road quot;, quot; postcode quot;: 100025}Value can also be another object or array. Therefore,
In the previous blog, javascript was used to generate multiple groups of texts, so that data input is not displayed. Now we need to write these inputs into the database. json is used for input.First, let's write about how to generate the data to be transmitted in the background.[Html]Copy codeThe Code is as follows:Function generateDtb (){// WriteVar txtName = do
The common Third-party frameworks for JSON parsing are: Jsonkit, Sbjson, Touchjson, whose sex is reduced from left to right. But starting with IOS5, Apple provides native support for JSON (nsjsonserialization).Jsonkit has stopped updating in 2012, the official said Jsonkit than the original Apple Nsjsonserialization resolution faster, the actual test of the original Apple Nsjsonserialization resolution fast
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