Android Gson解析JSON数据

来源：互联网发布：dedecms中js如何使用编辑：程序博客网时间：2024/05/20 05:29

导入GSON包(http://download.csdn.net/detail/s1e1s/9067155)
json数据

{    "rating": {        "max": 10,        "numRaters": 343,        "average": "7.0",        "min": 0    },    "subtitle": "",    "author": [        "[日] 片山恭一"    ],    "pubdate": "2005-1",    "tags": [        {            "count": 133,            "name": "片山恭一",            "title": "片山恭一"        },        {            "count": 62,            "name": "日本",            "title": "日本"        },        {            "count": 60,            "name": "日本文学",            "title": "日本文学"        },        {            "count": 38,            "name": "小说",            "title": "小说"        },        {            "count": 32,            "name": "满月之夜白鲸现",            "title": "满月之夜白鲸现"        },        {            "count": 15,            "name": "爱情",            "title": "爱情"        },        {            "count": 8,            "name": "純愛",            "title": "純愛"        },        {            "count": 8,            "name": "外国文学",            "title": "外国文学"        }    ],    "origin_title": "",    "image": "http://img3.douban.com/mpic/s1747553.jpg",    "binding": "平装",    "translator": [        "豫人"    ],    "catalog": "\n      ",    "pages": "180",    "images": {        "small": "http://img3.douban.com/spic/s1747553.jpg",        "large": "http://img3.douban.com/lpic/s1747553.jpg",        "medium": "http://img3.douban.com/mpic/s1747553.jpg"    },    "alt": "http://book.douban.com/subject/1220562/",    "id": "1220562",    "publisher": "青岛出版社",    "isbn10": "7543632608",    "isbn13": "9787543632608",    "title": "满月之夜白鲸现",    "url": "http://api.douban.com/v2/book/1220562",    "alt_title": "",    "author_intro": "",    "summary": "那一年，是听莫扎特、钓鲈鱼和家庭破裂的一年。说到家庭破裂，母亲怪自己当初没有找到好男人，父亲则认为当时是被狐狸精迷住了眼，失常的是母亲，但出问题的是父亲……。",    "price": "15.00元"}

新建一个类

public class Book {    //属性名与json中的数据对应    private String title;    private String publisher;    private String summary;    //json源数据中的数组转换为ArrayList,key在转换为行的类的属性名    private ArrayList<Tag> tags;    public String getTitle() {        return title;    }    public void setTitle(String title) {        this.title = title;    }    public String getPublisher() {        return publisher;    }    public void setPublisher(String publisher) {        this.publisher = publisher;    }    public String getSummary() {        return summary;    }    public void setSummary(String summary) {        this.summary = summary;    }    public ArrayList<Tag> getTags() {        return tags;    }    public void setTags(ArrayList<Tag> tags) {        this.tags = tags;    }}

解析代码

    //GSON    //result是json字符串    private void dealData(String result) {        //实例化json对象        Gson gson = new Gson();        //从json数据源中获取类对象        Book book = gson.fromJson(result, Book.class);        //将对象转换为json字符串        String toJSONString=gson.toJson(book);    }

//Fast-json方式private void dealData(String result) {        //从json字符串中获取数据        Book book = JSON.parseObject(result, Book.class);        Book book1 = new Book();        book1.setTitle("biaoti");        Book book2 = new Book();        book2.setTitle("biaoti");        Book book3 = new Book();        book3.setTitle("biaoti");        List<Book> list = new ArrayList<Book>();        list.add(book1);        list.add(book2);        list.add(book3);        //将list列表转换为json字符串        String jsonListString=JSON.toJSON(list).toString();        //从json字符串中获取列表        List<Book> books = JSON.parseObject(jsonListString,                new TypeReference<List<Book>>() {                });        //输出[{"title":"biaoti"},{"title":"biaoti"},{"title":"biaoti"}]/3        Log.i("info",jsonListString+"/"+books.size());    }

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