Java toJson()对项目排序错误
我有以下输出:Java toJson()对项目排序错误,java,json,gson,Java,Json,Gson,我有以下输出: { "id": 42950262095, "name": "lol", "players": [ { "avatar": { "userId": 25771876384, "userName": "yhht", "role": "Leader", "level": 40, "league": 0, "trophies": 1011, "d
{
"id": 42950262095,
"name": "lol",
"players": [
{
"avatar": {
"userId": 25771876384,
"userName": "yhht",
"role": "Leader",
"level": 40,
"league": 0,
"trophies": 1011,
"donatedTroops": 0,
"receivedTroops": 0
}
},
{
"avatar": {
"userId": 146035414262,
"userName": "ari",
"role": "New Member",
"level": 8,
"league": 0,
"trophies": 428,
"donatedTroops": 0,
"receivedTroops": 0
}
},
{
"avatar": {
"userId": 300659467521,
"userName": "cp 221",
"role": "New Member",
"level": 6,
"league": 0,
"trophies": 97,
"donatedTroops": 0,
"receivedTroops": 0
}
}
],
"badge": 13000049,
"status": "Anyone Can Join",
"playerCount": 3,
"score": 767,
"requiredTrophies": 0,
"warsWon": 0,
"warsLost": 0,
"warsTied": 0,
"warFrequency": 0,
"exp": 0,
"level": 1,
"description": "??lol????"
}
但问题是玩家阵列来得太早,并且部分初始细节被忽略了
这是我的代码:
public void parseAvatar() throws IOException, JSONException{
Game game = new Game();
game.setId(is.readLong());
game.setName(is.readString());
game.setBadge(is.readInt());
game.setStatus(status(is.readInt()));
game.setPlayerCount(is.readInt());
game.setScore(is.readInt());
game.setRequiredTrophies(is.readInt());
game.setWarsWon(is.readInt());
game.setWarsLost(is.readInt());
game.setWarsTied(is.readInt());
is.readInt();
game.setWarFrequency(is.readInt());
is.readInt();
game.setExp(is.readInt());
game.setLevel(is.readInt());
game.setDescription(is.readString());
is.readInt();
boolean a = is.readBoolean();
if(a){
is.readInt();
is.readInt();
}
int memCount = is.readInt();
/// Members!!
int i = 0;
while(i < memCount){
PlayerAvatar avatar = new PlayerAvatar();
avatar.setUserId(is.readLong());
avatar.setUserName(is.readString());
avatar.setRole(role(is.readInt()));
avatar.setLevel(is.readInt());
avatar.setLeague(is.readInt());
avatar.setTrophies(is.readInt());
avatar.setDonatedTroops(is.readInt());
avatar.setReceivedTroops(is.readInt());
is.readInt();
is.readInt();
is.readLong();
is.readByte();
is.readByte();
is.readLong();
GamePlayer player = new GamePlayer();
player.setAvatar(avatar);
game.addPlayers(player);
i++;
}
json = new Gson().toJson(game);
System.out.println();
}
private String role(int role) {
String memberRole = "";
if(role == 1){
memberRole = "New Member";
}
if(role == 2){
memberRole = "Leader";
}
if(role == 3){
memberRole = "Elder";
}
if(role == 4){
memberRole = "Co Leader";
}
return memberRole;
}
private String status(int statusint) {
String type = null;
if(statusint == 1){
type = "Anyone Can Join";
}
if(statusint == 2){
type = "Invite Only";
}
if(statusint == 3){
type = "Closed";
}
return type;
}
public void parseAvatar()抛出IOException、jsoneexception{
游戏=新游戏();
game.setId(is.readLong());
game.setName(is.readString());
game.setBadge(is.readInt());
game.setStatus(状态(is.readInt());
game.setPlayerCount(is.readInt());
game.setScore(is.readInt());
game.setRequiredTrophies(is.readInt());
game.setWarsWon(is.readInt());
game.setWarsLost(is.readInt());
game.setWarsTied(is.readInt());
is.readInt();
game.setWarFrequency(is.readInt());
is.readInt();
game.setExp(is.readInt());
game.setLevel(is.readInt());
game.setDescription(is.readString());
is.readInt();
布尔a=is.readBoolean();
如果(a){
is.readInt();
is.readInt();
}
int memCount=is.readInt();
///成员!!
int i=0;
而(i
您可以在本文中找到游戏、PlayerAvatar和GamePlayer类的详细信息:
有人知道我如何正确排序吗?JSON对象根据定义是无序的-您不应该依赖于属性的顺序。所以gson所做的一切都很好 如果出于某种原因,您别无选择,只能依赖于排序,那么这个问题有一些解决方案:(例如,使用jackson而不是gson,使用
@JsonPropertyOrder
,或者实现自定义序列化程序)
对于当前的gson和JDK实现,对类中的成员重新排序将产生相应顺序的输出,但是这是一个非常脆弱的解决方案。比如说
- JDK不能保证通过反射读取字段的顺序,将来可能会改变(过去已经改变),这会破坏代码。(这实际上是最不可能的问题,但也是可能的)。事实上 返回数组中的元素没有排序,也没有任何特定的顺序
- 即使JDK的订单没有改变,gson也不能保证它会以相同的顺序返回它们。它目前确实以相同的顺序返回它们,但如果由于某种原因gson的内部发生了更改,例如使用中间
,则顺序将发生更改,您的代码将中断HashMap
- 如果将来有其他人在维护您的类,他们会非常惊讶地发现,仅仅对类中的字段重新排序就会破坏代码——java类中字段的排序不应该改变功能
现在花几分钟时间合并代码,以确保字段的顺序,可以节省数小时或数天的调试时间。这种情况在现实生活中经常发生。JSON对象根据定义是无序的-您不应该依赖于属性的顺序。所以gson所做的一切都很好 如果出于某种原因,您别无选择,只能依赖于排序,那么这个问题有一些解决方案:(例如,使用jackson而不是gson,使用
@JsonPropertyOrder
,或者实现自定义序列化程序)
对于当前的gson和JDK实现,对类中的成员重新排序将产生相应顺序的输出,但是这是一个非常脆弱的解决方案。比如说
- JDK不能保证通过反射读取字段的顺序,将来可能会改变(过去已经改变),这会破坏代码。(这实际上是最不可能的问题,但也是可能的)。事实上 返回数组中的元素没有排序,也没有任何特定的顺序
- 即使JDK的订单没有改变,gson也不能保证它会以相同的顺序返回它们。它目前确实以相同的顺序返回它们,但如果出于某种原因
private Long id; private String name; private List<Player> players;
{ "id": 171799578198, "name": "Forum Striking", "players": [ { "avatar": { "userId": 21393, "currentHomeId": 21393, "clanId": 171799578198 } }, { "avatar": { "userId": 64425223942, "currentHomeId": 64425223942, "clanId": 171799578198 } } ] }
private Long id; private List<Player> players; private String name;
{ "id": 171799578198, "players": [ { "avatar": { "userId": 21393, "currentHomeId": 21393, "clanId": 171799578198 } }, { "avatar": { "userId": 64425223942, "currentHomeId": 64425223942, "clanId": 171799578198 } } ], "name": "Forum Striking" }