androidfans / JPJson

JPJson is a library to deal with Json data in Java supported by JParsec.

JPJson

JPJson is an open source json data parse library. It's parse function implemented based on the JParsec library.It is also a largish demo in a fully functional project. There are some interesting episode i hava met when i develop the library , you can refer the blog如何在运行时获取泛型的类型 and 无法反射到想要的构造函数时该如何根据Class对象构造Class实例? The interfaces JPJson offered imitate the Google's Gson library, the user just need to follow these steps:

• define a JavaBean
• get the json String
• call the fromJson() method which need the Class object and json String
• define a JavaBean's reference to accept the result

next is the code example:

//define the JavaBean
class CHS{
    //set the authority arbitrary
    //use the generic type to indicate what are the List stored
    private List<CH> ch;
}
class CH{
    public String names;
    public List<Integer> datas;
}

//code for using the interface
String json = "{\"ch\":{\"names\":\"怡美家园\",\"datas\":[1,2,3,4,5,6,7,8]}}"
JPJson jpJson = new JPJson();
CHS chs = jpJson.fromJson(json,CHS.class);
//now you will get a parsed CHS object

JPJSon

JPJson是一个开源的json解析库,解析部分主要基于JParsec实现.同时也作为JParsec解析工具的一个在稍大型项目中的完整演示. 在开发JPJson的过程中遇到很多有意思的小问题,具体可以参见我的这两篇博文如何在运行时获取泛型的类型 和 无法反射到想要的构造函数时该如何根据Class对象构造Class实例? 其中,JPJson的接口设计模仿了Google的Gson库,使用者只需要做到如下几步:

• 定义一个JavaBean
• 获取json字符串
• 调用fromJson()方法,传入JavaBean的Class对象和json字符串
• 定义一个JavaBean的引用接收返回结果即可

下面是使用的完整代码示例:

//首先是JavaBean的定义
class CHS{
    //权限修饰符可以任意设置
    //使用泛型指定list里面所存放的具体类型
    private List<CH> ch;
}
class CH{
    public String names;
    public List<Integer> datas;
}
//函数调用的代码
String json = "{\"ch\":{\"names\":\"怡美家园\",\"datas\":[1,2,3,4,5,6,7,8]}}"
JPJson jpJson = new JPJson();
CHS chs = jpJson.fromJson(json,CHS.class);
//这样就可以获得一个被解析好的CHS对象啦