Gson解析json数据

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<NBAMatchBasic> 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<NBAMatchBasic> getList() {
return list;
}
public void setList(List<NBAMatchBasic> 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<NBAMatchs> matchs = new ArrayList<NBAMatchs>();
matchs = new Gson().fromJson(NBAMatchJsons,new TypeToken<ArrayList<NBAMatchs>>() {}.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<String, City> citys = new Gson().fromJson(jsonStr, new TypeToken<Map<String, City>>() {}.getType());
System.out.println(citys.size());
  }
}
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