Gson解析json数据-白红宇

Gson解析json数据

阅读量：6230 次

发布时间：2019-06-21

本文共 5336 字，大约阅读时间需要 17 分钟。

1、解析单个对象

　　JSON字符串如下

[    {        "formatDate":"2015-10-28",        "date":"2015\u5e7410\u670828\u65e5 \u661f\u671f\u4e09",        "list":[{                    "sdate":"2015-10-28",                    "time":"08:00",                    "type":"\u5e38\u89c4\u8d5b",                    "home_team":"\u8001\u9e70",                    "home_score":"94",                    "visit_team":"\u6d3b\u585e",                    "visit_score":"106"                },{                    "sdate":"2015-10-28",                    "time":"08:00",                    "type":"\u5e38\u89c4\u8d5b",                    "home_team":"\u516c\u725b",                    "home_score":"97",                    "visit_team":"\u9a91\u58eb",                    "visit_score":"95"                }]    }]

　　封装解析的对象

public class NBAMatchs {    /**     * 时间     */    private String formatDate;    /**     * 赛程时间     */    private String date;    /**     * 赛事列表     */    List
     
       list ;        public String getFormatDate() {        return formatDate;    }    public void setFormatDate(String formatDate) {        this.formatDate = formatDate;    }    public String getDate() {        return date;    }    public void setDate(String date) {        this.date = date;    }    public List
      
        getList() {        return list;    }    public void setList(List
       
         list) {        this.list = list;    }}

　　实体对象

public class NBAMatchBasic {    private String sdate;        private String time ;        private String home_team;        private String home_score;        private String visit_team;        private String visit_score;    public String getSdate() {        return sdate;    }    public void setSdate(String sdate) {        this.sdate = sdate;    }    public String getTime() {        return time;    }    public void setTime(String time) {        this.time = time;    }    public String getHome_team() {        return home_team;    }    public void setHome_team(String home_team) {        this.home_team = home_team;    }    public String getHome_score() {        return home_score;    }    public void setHome_score(String home_score) {        this.home_score = home_score;    }    public String getVisit_team() {        return visit_team;    }    public void setVisit_team(String visit_team) {        this.visit_team = visit_team;    }    public String getVisit_score() {        return visit_score;    }    public void setVisit_score(String visit_score) {        this.visit_score = visit_score;    }}

　　解析代码

public static void main(String[] args) {        String Json = "JSON字符串";        NBAMatchs NBA = new NBAMatchs();        NBA = new Gson().fromJson(Json, NBAMatchs.class);        System.out.println(NBA.getFormatDate());    }

2、解析List集合

　　Json字符串如下

[    {        "formatDate":"2015-10-28",        "date":"2015\u5e7410\u670828\u65e5 \u661f\u671f\u4e09",        "list":[                {                    "sdate":"2015-10-28",                    "time":"08:00",                    "type":"\u5e38\u89c4\u8d5b",                    "home_team":"\u8001\u9e70",                    "home_score":"94",                    "visit_team":"\u6d3b\u585e",                    "visit_score":"106"                },{                    "sdate":"2015-10-28",                    "time":"08:00",                    "type":"\u5e38\u89c4\u8d5b",                    "home_team":"\u516c\u725b",                    "home_score":"97",                    "visit_team":"\u9a91\u58eb",                    "visit_score":"95"                }]    },    {        "formatDate":"2015-10-29",        "date":"2015\u5e7410\u670829\u65e5 \u661f\u671f\u56db",        "list":[            {                "sdate":"2015-10-29",                "time":"07:00",                "type":"\u5e38\u89c4\u8d5b",                "home_team":"\u9b54\u672f",                "home_score":"87",                "visit_team":"\u5947\u624d",                "visit_score":"88"            },{                "sdate":"2015-10-29",                "time":"07:30",                "type":"\u5e38\u89c4\u8d5b",                "home_team":"\u51ef\u5c14\u7279\u4eba",                "home_score":"112",                "visit_team":"76\u4eba",                "visit_score":"95"            }]    }]

　　解析代码

public static void main(String[] args) {        String NBAMatchJsons ="JSON字符串";        List
     
       matchs = new ArrayList
      
       ();        matchs = new Gson().fromJson(NBAMatchJsons,new TypeToken
       
        
         >() {}.getType());        System.out.println(matchs.size());    }

3、解析map集合

　　Json字符串

{    '1':         {
    'id': '1','code': 'bj','name': '北京','map': '39.90403, 116.40752599999996'},    '2':         {
    'id': '2','code': 'sz','name': '深圳','map': '22.543099, 114.05786799999998'},    '9':         {
    'id': '9','code': 'sh','name': '上海','map': '31.230393,121.473704'},    '10':         {
    'id': '10','code': 'gz','name': '广州','map': '23.129163,113.26443500000005'} }

　　解析测试类

public class Test {　　class City{  	int id;  	String name;  	String code;  	String map;  } 　　public static void main(String[] args) {        String jsonStr="Json字符串";         Map
     
       citys = new Gson().fromJson(jsonStr, new TypeToken
      
       
        >() {}.getType());           System.out.println(citys.size());　　}}

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