Fastjson parsing json into a solution that contains generic objects, with internal generic objects parsing errors again (Android)

Toss a small half-day problem, here first thanked the lad of Shenzhen, remote help me to engage, although also did not get out ==========fuck

Disclaimer: This exception occurs under Android development and there is no problem with Java development

Abnormal recurrence

Simply say the code that throws the exception:

(1) Parse the JSON code as follows:

recommendbean<recommendlistbean> obj = Json.parseobject (jsonstring, New typereference<recommendbean< Recommendlistbean>> () {}); Recommendlistbean Recommendlistbean = (Recommendlistbean) (Obj.getdata ());

The error log is as follows:

Java.lang.ClassCastException:com.alibaba.fastjson.JSONObject cannot is cast to Com.test.RecommendListBean

(2) model as follows:

Package com.test;/** * Created by Travis on 2017/8/20. */public class Recommendbean<t> {    private int status;    private String message;    Private T data;    public int getStatus () {        return status;    }    public void setStatus (int status) {        this.status = status;    }    Public String GetMessage () {        return message;    }    public void Setmessage (String message) {        this.message = message;    }    Public T GetData () {        return data;    }    public void SetData (T data) {        this.data = data;    }}

　　

 Packagecom.test;Importjava.util.List;/*** Created by Lenovo on 2017/8/20.*/ Public classRecommendlistbean {Private intcount; PrivateList<recommendlistitembean>list;  Public intGetCount () {returncount; }     Public voidSetCount (intcount) {         This. Count =count; }     PublicList<recommendlistitembean>getList () {returnlist; }     Public voidSetlist (list<recommendlistitembean>list) {         This. List =list; }}

Package Com.test;import java.io.serializable;/** * Created by Travis on 2017/8/20. */public class Recommendlistitembean implements Serializable {private static final long Serialversionuid = 21455356667    888L;    private int uid;    Private String nickname;    private int sex;    private int age;    Private String Avatar;    Private String theme_pic;    Private String job;    Private String signature;    Private String sound;    private int sound_length;    private int fee;    Public Recommendbean Getrecommend () {return recommend;    } public void Setrecommend (Recommendbean recommend) {this.recommend = recommend;    } private Recommendbean recommend;    public int Getuid () {return UID;    } public void SetUid (int uid) {this.uid = UID;    } public String Getnickname () {return nickname;    } public void Setnickname (String nickname) {this.nickname = nickname;    } public int Getsex () {return sex; } public Void setsex (int sex) {this.sex = sex;    } public int Getage () {return age;    public void Setage (int.) {this.age = age;    } public String Getavatar () {return avatar;    } public void Setavatar (String avatar) {This.avatar = avatar;    } public String Gettheme_pic () {return theme_pic;    } public void Settheme_pic (String theme_pic) {this.theme_pic = Theme_pic;    } public String Getjob () {return job;    The public void Setjob (String job) {this.job = job;    } public String Getsignature () {return signature;    } public void Setsignature (String signature) {this.signature = signature; } public static class Recommendbean<t> implements Serializable {private static final long Serialversionui        D = 21455356667889L;        private int id;        private int user_id;        private int type;        Private Object content;        private int Zan; Private INT status;        Private String Create_time;        Private String Update_time;        private int zantotal;        private int commenttotal;        private T picture;        Private T video;        public int GetType () {return type;        } public void SetType (int type) {this.type = type;        } public int getId () {return id;        } public void setId (int id) {this.id = ID;        } public int getuser_id () {return user_id;        } public void setuser_id (int user_id) {this.user_id = user_id;        } public Object GetContent () {return content;        } public void SetContent (Object content) {this.content = content;        } public int Getzan () {return zan;        } public void Setzan (int zan) {This.zan = Zan;        } public int GetStatus () {return status; } public VoID setStatus (int status) {this.status = status;        } public String Getcreate_time () {return create_time;        } public void Setcreate_time (String create_time) {this.create_time = Create_time;        } public String Getupdate_time () {return update_time;        } public void Setupdate_time (String update_time) {this.update_time = Update_time;        } public int Getzantotal () {return zantotal;        } public void Setzantotal (int zantotal) {this.zantotal = Zantotal;        } public int Getcommenttotal () {return commenttotal;        } public void Setcommenttotal (int commenttotal) {this.commenttotal = Commenttotal;        } public T Getpicture () {return picture;        } public void Setpicture (T picture) {this.picture = picture; } public T Getvideo () {return VIDeo        } public void Setvideo (T video) {this.video = video; }    }}

　　

Cause Analysis:

After debug found where generics are located, still jsonobject, and not resolved to the corresponding object, just to parse obj into the required entity object.

Even if a strong turn is used here, there will still be an error message: Cannot is cast to Com.test.RecommendListBean

Workaround: swap with Gson to parse, the specific method is as follows

  Gson Gson = new Gson ();  recommendbean<recommendlistbean> obj = Gson.fromjson (jsonstring, New typetoken<recommendbean< Recommendlistbean>> () {}.gettype ());  Recommendlistbean Recommendlistbean = (Recommendlistbean) (Obj.getdata ());

　　

Fastjson parsing json into a solution that contains generic objects, with internal generic objects parsing errors again (Android)