Gson使用笔记

直接看代码，环境为groovy1.8.6+jdk1.5.31，调试环境使用GroovyConsole

将Gson.jar放到groovy\lib目录里。

import com.google.gson.Gson

class Test {
    static main(args){
        String jsonTxt = '[{"name":"老张头", "age":66, "phone":["13021131", "15010921"]},{"name":"老李头", "age":86, "phone":["15010353", "13161244"]}]'
        Gson gson = new Gson()

        /** 将JSON格式字符串转换成List<user>对象 **/
        List users = gson.fromJson(jsonTxt, List.class)
        println users

        /********************************************************/
        String jsonTxt1 = '{"name":"老张头", "age":66, "phone":["13021131", "15010921"]}'

        /** 将JSON格式字符串转换成JavaBean对象 **/
        User user = gson.fromJson(jsonTxt1, User.class)
        println user

        /** 将JavaBean对象转换为JSON格式字符串 **/
        String jsonRetString = gson.toJson(user)
        println jsonRetString
    }
}
private class User {
    String name
    int age
    List phone
}

输出如下：

[[name:老张头, age:66.0, phone:[13021131, 15010921]], [name:老李头, age:86.0, phone:[15010353, 13161244]]]
User@1192efd
{"name":"老张头","age":66,"phone":["13021131","15010921"]}