预计BEGIN_ARRAY但STRING在第1分1列

Question

预计BEGIN_OBJECT但在线串1列1 请帮助我，我得到这个错误

我的列表信息类从解析的JSON
ListOffers创建对象的.java

public class ListOffers { 

@SerializedName("ListOffers") 
@Expose 
public List<Offer> offers; 

public void setListOffers(List<Offer> offers) { 
    this.offers = offers; 
} 

public List<Offer> getListOffers() { 
    return offers; 
} 

public ListOffers() { 

} 
} 

public class Offer { 


public String username; 
@Expose 
public String title; 
@Expose 
public String description; 
@Expose 
public int discount; 
@Expose 
public String image1; 
@Expose 
public String image2; 
@Expose 
public String image3; 
@Expose 
public String image4; 
public Date expiry_duration; 
public Date date_posted; 
} 

我的JSON：

{"offers":[ 
    { 
    "username":"zara", 
    "title":"zara offer", 
    "description":"zara description", 
    "discount":"0", 
    "image1":"", 
    "image2":"", 
    "image3":"", 
    "image4":"", 
    "expiry_duration":"2014-10-21", 
    "date_posted":"2014-10-07 04:01:20" 
    },.... 
]} 

MainActivity代码使用解析JSON GSON .....

try { 
        // read the server response and attempt to parse it as JSON 
        Reader reader = new InputStreamReader(content); 

        GsonBuilder gsonbuilder = new GsonBuilder(); 
        gsonbuilder.setDateFormat("yy-MM-dd hh:mm:ss"); //Format of our JSON dates 
        Gson gson = gsonbuilder.create(); 
        ListOffers offers = gson.fromJson(reader, ListOffers.class); 
        content.close(); 


       } catch (Exception ex) { 
        Log.e(TAG, "Failed to pasre JSON due to: " + ex); 
        failedLoadingOffers1(); 
....etc 

错误：预期BEGIN_OBJECT但STRING在第1行1列

Answer 1

gson.fromJson需要一个字符串变量，要发送它的阅读器的一个变量。

您应该将阅读器转换为字符串。也许使用类似这样的东西：

try { 
    // read the server response and attempt to parse it as JSON 
    BufferedReader r = new BufferedReader(new InputStreamReader(content)); 
    StringBuilder s = new StringBuilder(); 
    String line; 
    while ((line = r.readLine()) != null) { 
    s.append(line); 
    } 
    //now s has your string 
    GsonBuilder gsonbuilder = new GsonBuilder(); 
    gsonbuilder.setDateFormat("yy-MM-dd hh:mm:ss"); //Format of our JSON dates 
    Gson gson = gsonbuilder.create(); 
    ListOffers offers = gson.fromJson(s.toString(), ListOffers.class); //here we send s 
    content.close(); 
} catch (Exception ex) { 
    Log.e(TAG, "Failed to pasre JSON due to: " + ex); 
        failedLoadingOffers1(); 
....etc