读取JSON文件数据网上有很多方法吗，这里采用SimpleJSON，关于SimpleJSON的介绍参考以下链接：http://wiki.unity3d.com/index.php/SimpleJSON，使用之前要先导入SimpleJSON的相关文件。
JSON文件名：achieve.json，文件内容：
{ "30002":{"achieve_id":30002,"achieve_name":"连胜","achieve_race":3,"achieve_type":41,"achieve_des":"排位赛连续胜利10场","achieve_gold":20,"achieve_times":10,"image":"athletics_2"}, "30003":{"achieve_id":30003,"achieve_name":"百战百胜","achieve_race":3,"achieve_type":41,"achieve_des":"排位赛连续胜利100场","achieve_gold":100,"achieve_times":100,"image":"athletics_3"}, "30004":{"achieve_id":30004,"achieve_name":"不屈","achieve_race":3,"achieve_type":42,"achieve_des":"排位赛连续失败10场","achieve_gold":5,"achieve_times":10,"image":"athletics_4"} }