Suppose we have obtained a Java object on the server side, and now we are considering how to convert this Java object into a string that complies with the JSON syntax. Of course, we can write a set of algorithms to implement this
/value" pairs ". Example: an object of a person: {"name": "", "Age": 24} 2. An array is an ordered set of values. (1) An array starts with "[" (left brackets) and ends with "]" (right brackets. (2) Use commas (,) to separate values. Example: A group of students {"student": [{"name": "Xiao Ming", "Age": 23 },{ "name": "", "Age": 24}]} Note: This
I. General description
XML and JSON are the most common data exchange formats. This example shows how to convert a java object to JSON output.
Ii. Process
1. In the project above,
Add the code in "com. waylau. rest. resources. Use
Use JSON-lib to convert a Java object to a JSON string
After learning to use Ajax in J2EE, sometimes the client data returned from the server is an object. It is easy to make errors when you manually piece together the
1. Import the Jackson jarDependency> groupId>Com.fasterxml.jackson.coregroupId> Artifactid>Jackson-databindArtifactid> version>2.8.9version>Dependency>2. Java code is as follows Public classJsonutils {//defining the Jackson object Private Static FinalObjectmapper MAPPER =NewObjectmapper (); /*** Converts an object into a
Convert Java basic data to Json code, and convert java data to json
JSON is a lightweight data exchange format, which is very suitable for the interaction between servers and JavaScrip
This article mainly introduces the best way to convert JSON strings into JSON objects in JS, and need friends to refer to the following In JS, the JSON string is parsed into JSON data format, usually in two ways: 1. One is to use the Eval () function. 2. Use function objec
Converts a json string to a json object. During data transmission, json is transmitted in the form of text, that is, strings, while JS operates on JSON objects. Therefore, the conversion between JSON objects and
Converts a json string to a json object. During data transmission, json is transmitted in the form of text, that is, strings, while JS operates on JSON objects. Therefore, mutual conversion between JSON objects and
', value: 'yulin '},{Name: '123', value: 'ankang City '},{Name: '200', value: 'shangluo City '}]}";
Here, based on the data type obtained asynchronously by jQuery-json object and string, we will introduce the Processing Methods of the obtained results in two ways.
1. For the JSON string returned by the server, if jQuery asynchronous requests do not provide a type
the data type obtained asynchronously by jQuery-json object and string, we will introduce the Processing Methods of the obtained results in two ways.1. For the JSON string returned by the server, if jQuery asynchronous requests do not provide a type description or are accepted as strings, an object processing is requi
executed as a statement (statement). For example, if the object literal {} is not enclosed, then eval will recognize the curly brace as the start and end tag of the JavaScript block, and {} will be considered an empty statement. So the following two execution results are different:
1
alert(eval("{}");// return undefined
2
alert(eval("({})");// return
: ' Yulin '}, {name: ' 6109 ', V Alue: ' Ankang '}, {name: ' 6110 ', Value: ' Shangluo '} ]}";This is based on the data type obtained by jquery asynchronously,--json object and string, and describes how the results are handled in two ways. 1, for the JSON string returned by the server, if the jquery asynchronous request did not do type descriptio
JSON directly into the specified custom object, where list is fully parsed and map is not fully parsedMybeanwithperson Diybean = (Mybeanwithperson) Jsonobject.tobean (Jsonobject.fromobject (JSON), MyBeanWithPerson.class , Classmap);System.out.println (Diybean);System.out.println ("Do the list release");listfor (person O:list) {Person P = (person) o;System.out.pr
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