解析json到java對象時出錯：期望編號，得到字符串

Question

我打電話給一個服務，它將響應作爲json返回，並使用Gson將它們轉換爲Java對象。在47 50的情況下，我在的情況下，3但是獲得Java對象，我得到以下錯誤：這是失敗可以看到這裏

com.google.gson.JsonSyntaxException: Expecting number, got: STRING 
    at com.google.gson.internal.bind.TypeAdapters$11.read(TypeAdapters.java:304) 
    at com.google.gson.internal.bind.TypeAdapters$11.read(TypeAdapters.java:293) 
    at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:93) 
    at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:172) 
    at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:40) 
    at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:81) 
    at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:60) 
    at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:93) 
    at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:172) 
    at com.google.gson.Gson.fromJson(Gson.java:795) 
    at com.google.gson.Gson.fromJson(Gson.java:761) 
    at com.google.gson.Gson.fromJson(Gson.java:710) 
    at com.google.gson.Gson.fromJson(Gson.java:682) 

一個JSON響應：http://ec2-50-112-212-186.us-west-2.compute.amazonaws.com/ske.json。我的Java bean如下：

import java.util.List; 

import com.google.gson.annotations.SerializedName; 

public class WordSketch{ 

    @SerializedName("Gramrels") 
    private List<Gramrel> gramrels; 

    public List<Gramrel> getGramrels(){ 
     return this.gramrels; 
    } 
    public void setGramrels(List<Gramrel> gramrels){ 
     this.gramrels = gramrels; 
    } 

    public static class Gramrel { 

     @SerializedName("Words") 
     private List<Word> words; 
     private Number count; 
     private String name; 
     private Number score; 
     private Number seek; 

     public List<Word> getWords(){ 
      return this.words; 
     } 
     public void setWords(List<Word> words){ 
      this.words = words; 
     } 
     public Number getCount(){ 
      return this.count; 
     } 
     public void setCount(Number count){ 
      this.count = count; 
     } 
     public String getName(){ 
      return this.name; 
     } 
     public void setName(String name){ 
      this.name = name; 
     } 
     public Number getScore(){ 
      return this.score; 
     } 
     public void setScore(Number score){ 
      this.score = score; 
     } 
     public Number getSeek(){ 
      return this.seek; 
     } 
     public void setSeek(Number seek){ 
      this.seek = seek; 
     } 
    } 

    public static class Word { 
     private Number count; 
     private Number id; 
     private String lempos; 
     private Number score; 
     private Number seek; 
     private String word; 

     public Number getCount(){ 
      return this.count; 
     } 
     public void setCount(Number count){ 
      this.count = count; 
     } 
     public Number getId(){ 
      return this.id; 
     } 
     public void setId(Number id){ 
      this.id = id; 
     } 
     public String getLempos(){ 
      return this.lempos; 
     } 
     public void setLempos(String lempos){ 
      this.lempos = lempos; 
     } 
     public Number getScore(){ 
      return this.score; 
     } 
     public void setScore(Number score){ 
      this.score = score; 
     } 
     public Number getSeek(){ 
      return this.seek; 
     } 
     public void setSeek(Number seek){ 
      this.seek = seek; 
     } 
     public String getWord(){ 
      return this.word; 
     } 
     public void setWord(String word){ 
      this.word = word; 
     } 
    } 
} 

與實際GSON呼叫gson.fromJson(json, WordSketch.class)。

任何人都可以指出什麼是錯誤的，或者至少讓我知道如何調試（快速），因爲我不知道在哪個部分的JSON，GSON失敗？

非常感謝，

Answer 1

通過觀察你的JSON，我已經意識到有些領域，通常有一個數值，其他時候，他們有一個空字符串值。

例如，第三gramrel的迴應是：

{ 
    "count": "", 
    "colbreak": 1, 
    "name": "unary rels", 
    "score": "", 
    "Words": [ 
     { 
      "count": 6, 
      "word": "prp_għaċ-", 
      "name": "prp_għaċ-", 
      "score": 9.1, 
      "Words": [ ], 
      "seek": 2231297 
     } 
    ], 
    "seek": 0 
}, 

在你的類，你定義count和Number型score，GSON抱怨！

---

編輯：我建議你在你的類中的所有領域成爲String類型的，然後你可以將它作爲你需要......我的意思是，你可以用你寫就像類一個響應包類，然後從響應類來創建你實際的類...

WordSketch ws = gson.fromJson(json, WordSketch.class); 
for (Gramrel g in ws.getGramrels) { 
    Number count = //convert the String into Number... 
    //etc... 
    MyGrammel myGrammel = new MyGrammel(count, ...); 
} 

在這個例子中，你Gramrel類只是一個臨時的類包裝響應，並MyGramrel是您將使用的實際類（具有類型爲Number的屬性的類）....