Android-解析Json(Gson-FastJson)

Gson解析

//1.导包com.google.code.gson:gson:2.8.0//2.建两个实体类BigPerson public class BigPerson {    private int list;    private List<SmallPerson> persons;    public BigPerson() {    }    public BigPerson(int list, List<SmallPerson> persons) {        this.list = list;        this.persons = persons;    }    public int getList() {        return list;    }    public void setList(int list) {        this.list = list;    }    public List<SmallPerson> getPersons() {        return persons;    }    public void setPersons(List<SmallPerson> persons) {        this.persons = persons;    }}SmallPerson：public class SmallPerson implements Parcelable{    private int pid;    private String pname;    private int page;    public SmallPerson() {    }    public SmallPerson(int pid, String pname, int page) {        this.pid = pid;        this.pname = pname;        this.page = page;    }    public int getPid() {        return pid;    }    public void setPid(int pid) {        this.pid = pid;    }    public String getPname() {        return pname;    }    public void setPname(String pname) {        this.pname = pname;    }    public int getPage() {        return page;    }    public void setPage(int page) {        this.page = page;    }    @Override    public int describeContents() {        return 0;    }    @Override    public void writeToParcel(Parcel parcel, int i) {        parcel.writeInt(pid);        parcel.writeString(pname);        parcel.writeInt(page);    }    public static final Parcelable.Creator<SmallPerson> CREATOR=new Parcelable.Creator<SmallPerson>(){        @Override        public SmallPerson createFromParcel(Parcel parcel) {            SmallPerson smallPerson=new SmallPerson();            smallPerson.setPid(parcel.readInt());            smallPerson.setPname(parcel.readString());            smallPerson.setPage(parcel.readInt());            return smallPerson;        }        @Override        public SmallPerson[] newArray(int i) {            return new SmallPerson[i];        }    };    @Override    public String toString() {        return "SmallPerson{" +                "pid=" + pid +                ", pname='" + pname + '\'' +                ", page=" + page +                '}';    }}   Activity：     public void parsejson(View view) {        new MyTask().execute();    }          class MyTask extends AsyncTask {        @Override        protected Object doInBackground(Object[] params) {            try {                URL url = new URL("http://192.168.42.58:8080/examples/person.json");                HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();                httpURLConnection.setRequestMethod("GET");                httpURLConnection.setConnectTimeout(5000);                //获取结果码                int code = httpURLConnection.getResponseCode();                if (code == 200) {                    InputStream is = httpURLConnection.getInputStream();                    //测试                    BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(is));                    String str = null;                    StringBuffer stringBuffer = new StringBuffer();                    while ((str = bufferedReader.readLine()) != null) {                        stringBuffer.append(str);}                    Log.i("test", stringBuffer.toString());                    //解析Json，                    //使用Gson解析json                   Gson gson=new Gson();                   BigPerson bigPerson=gson.fromJson(stringBuffer.toString(),BigPerson.class);                    Log.i("test",bigPerson.getList()+"");                    List<SmallPerson> persons=bigPerson.getPersons();                    for (SmallPerson person : persons) {                       Log.i("test",person.toString());                   }            } catch (IOException e) {                e.printStackTrace();            } catch (JSONException e) {                e.printStackTrace();}            return null;           }        @Override        protected void onPostExecute(Object o) {            super.onPostExecute(o);        }}

FastJson解析

加Jar包：fastjson-1.2.3.jar

在Gson下改代码，将Gson解析改为fastjson

                  //FastJson
                    BigPerson bigPerson=JSON.parseObject(stringBuffer.toString(),BigPerson.class);
                    Log.i("test",bigPerson.getList()+"");
                    List<SmallPerson> persons=bigPerson.getPersons();
                    for (SmallPerson person : persons) {
                        Log.i("test",person.toString());
                    }