Question

我真的很喜欢Playframework中的Form但是当我有一个字段为Map<>

的类时我发现了一些奇怪的东西

import org.codehaus.jackson.annotate.JsonIgnoreProperties;
import org.codehaus.jackson.annotate.JsonProperty;
import org.codehaus.jackson.annotate.JsonSetter;
import org.codehaus.jackson.map.annotate.JsonDeserialize;

import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;

@JsonIgnoreProperties(ignoreUnknown = true)
public class GameState {

    private String roomId = "";

    private String woohoo = "";

    @JsonDeserialize(as = LinkedHashMap.class, contentAs = Integer.class, keyAs = String.class)
    private Map<String, Integer> players = new HashMap<String, Integer>();


    @JsonProperty("players")
    public Map<String, Integer> getPlayers() {
        return players;
    }

    @JsonSetter("players")
    public GameState setPlayers(Map<String, Integer> players) {
        this.players = players;
        return this;
    }

    public String getRoomId() {
        return roomId;
    }

    public GameState setRoomId(String roomId) {
        this.roomId = roomId;
        return this;
    }

    public String getWoohoo() {
        return woohoo;
    }

    public GameState setWoohoo(String woohoo) {
        this.woohoo = woohoo;
        return this;
    }
}

在我的控制器中，我有以下静态形式：

static Form<GameState> gameForm = new Form<GameState>(GameState.class);

然后我有以下行动：

@BodyParser.Of(BodyParser.Json.class)
public static Result testAction() {
    Form<GameState> form = gameForm.bindFromRequest();
    if (!form.hasErrors()) {
        GameState s = form.get();
        if (!s.getPlayers().isEmpty()) {
            return ok();
        } else {
            return badRequest("Need players!");
        }
    } else {
        return badRequest("Wrong format!");
    }
}

这会反序列化任何其他字段（List<>和Set<>，当我有这些字段的课程时），但不 Map<>字段。奇怪的是它适用于：

GameState s = Json.fromJson(request().body().asJson(), GameState.class);

这是我用来测试动作的卷曲调用

curl -X POST http://localhost:9000/game/end/1 --data '{"roomId": "someid", "woohoo": "something", "players" : { "oliver" : "0" } }' -H 'Content-Type: application/json'

我正在使用Play 2.1。如果我在这个动作上有@ BodyParser.Of（），那似乎也没关系。

问题：有没有办法让form.get()正常工作？

play.data.Form＆LT;＆GT;不填写j.u.Map＆lt;＆gt;将请求主体反序列化为对象时的字段

0 个答案: