JavaSON - Java对象与JSON数据相互转换的Java类库

jopen 9年前

JavaSON

Synopsis

JavaSON是一个非常小的Java类库能够轻松实现Java对象与JSON数据格式的相互转换，使用Java反射包实现。

Installation

Download the following .jar file and add it to your Java project's build path:

javason.jar

You can then import the converter and exception classes.

import co.avikj.JavaSON.JavaSONConverter;  import co.avikj.JavaSON.JavaSONException;

Code Example

Converting to JSON

Animal myCat = new Animal("cat", "Amber", 4);  Person me = new Person("Avik Jain", 15, 4.0, myCat, new Point(1, 2));  JSONObject jsonMe = JavaSONConverter.toJSONObject(me);

'jsonMe' now stores the following JSON data:

{      "name": "Avik Jain",      "gpa": 4,      "location": {          "x": 1,          "y": 2,          "class": "co.avikj.JavaSON.demo.Point"      },      "class": "co.avikj.JavaSON.demo.Person",      "age": 15,      "pet": {          "name": "Amber",          "type": "cat",          "class": "co.avikj.JavaSON.demo.Animal",          "age": 4      }  }

Converting to Java Object

JSONObject jsonMe2 = new JSONObject("{\"name\":\"Avik Jain\",\"gpa\":4,\"location\":{\"x\":1,\"y\":2,\"class\":\"co.avikj.JavaSON.demo.Point\"},\"class\":\"co.avikj.JavaSON.demo.Person\",\"age\":15,\"pet\":{\"name\":\"Amber\",\"type\":\"cat\",\"class\":\"co.avikj.JavaSON.demo.Animal\",\"age\":4}}");      Person me2 = JavaSONConverter.toJavaObject(jsonMe2)

The data in 'me2' is now identical to that in 'me' in the previous example.

Complete testing code can be found here

Format Requirements

Converting to JSON

  • A field will be included in the JSON output if and only if the field has a public accessor method following the Java naming standard (getFieldName())
  • The JSON data must not contain any arrays

Converting to Java Object

  • JSON data must include an entry for "class" that stores the value of the Java class name for an object. This name is automatically included when a JSONObject is created using JavaSONConverter.toJSONObject().
  • The Java class for the object must have a no-args constructor
  • The fields included in the JSON data must have public mutator methods following the Java naming standard (setFieldName())
  • The Java class must not include any array fields

Coming Soon

  • Support for arrays when converting from JSON to Java Objects and vice-versa

项目地址： https://github.com/avikj/JavaSON