【发布时间】：2016-06-14 14:05:50
【问题描述】：
我正在尝试使用 volley 解析 JSON 对象，但它会将所有值都设为 null
我正在使用 GsonRequest 自定义类来使用 GSON 库进行解析
public class GsonRequest < T > extends JsonRequest < T > {
/** Charset for request. */
private static final String PROTOCOL_CHARSET = "utf-8";
/** Content type for request. */
private static final String PROTOCOL_CONTENT_TYPE = String.format("application/json; charset=%s", PROTOCOL_CHARSET);
private final Gson mGson;
//private final String mBody;
private final Class < T > clazz;
private final Listener < T > listener;
private final Map < String,
String > headers;
private final String mBody;
public GsonRequest(int method, String url, String body, Class < T > clazz, Map < String, String > headers, Response.Listener < T > listener, Response.ErrorListener errorListener) {
super(method, url, (body == null) ? null: body, listener, errorListener);
this.clazz = clazz;
this.mBody = body;
this.headers = headers;
this.listener = listener;
mGson = new Gson();
}@Override
public Map < String,
String > getHeaders() throws AuthFailureError {
return headers != null ? headers: super.getHeaders();
}
@Override
protected void deliverResponse(T response) {
listener.onResponse(response);
}
@Override
protected Response < T > parseNetworkResponse(NetworkResponse response) {
try {
String json = new String(response.data, HttpHeaderParser.parseCharset(response.headers));
return Response.success(mGson.fromJson(json, clazz), HttpHeaderParser.parseCacheHeaders(response));
} catch(UnsupportedEncodingException e) {
return Response.error(new ParseError(e));
} catch(JsonSyntaxException e) {
Log.e("JsonSyntaxException", " " + e);
return Response.error(new ParseError(e));
}
}
}
我使用http://www.jsonschema2pojo.org/ 创建了模型类，下面是我的模型类
public class ModelConnection {
private List < Datum > data = new ArrayList < Datum > ();
private Integer code;
private Object message;
private Map < String,
Object > additionalProperties = new HashMap < String,
Object > ();
/**
*
* @return
* The data
*/
public List < Datum > getData() {
return data;
}
/**
*
* @param data
* The Data
*/
public void setData(List < Datum > data) {
this.data = data;
}
/**
*
* @return
* The code
*/
public Integer getCode() {
return code;
}
/**
*
* @param code
* The Code
*/
public void setCode(Integer code) {
this.code = code;
}
/**
*
* @return
* The message
*/
public Object getMessage() {
return message;
}
/**
*
* @param message
* The Message
*/
public void setMessage(Object message) {
this.message = message;
}
public Map < String,
Object > getAdditionalProperties() {
return this.additionalProperties;
}
public void setAdditionalProperty(String name, Object value) {
this.additionalProperties.put(name, value);
}
public class Datum {
private Integer userID;
private String firstName;
private String lastName;
private String title;
private String organization;
private String industry;
private String location;
private String profileSummary;
private String imagePath;
private List < Object > interests = new ArrayList < Object > ();
private Map < String,
Object > additionalProperties = new HashMap < String,
Object > ();
/**
*
* @return
* The userID
*/
public Integer getUserID() {
return userID;
}
/**
*
* @param userID
* The UserID
*/
public void setUserID(Integer userID) {
this.userID = userID;
}
/**
*
* @return
* The firstName
*/
public String getFirstName() {
return firstName;
}
/**
*
* @param firstName
* The FirstName
*/
public void setFirstName(String firstName) {
this.firstName = firstName;
}
/**
*
* @return
* The lastName
*/
public String getLastName() {
return lastName;
}
/**
*
* @param lastName
* The LastName
*/
public void setLastName(String lastName) {
this.lastName = lastName;
}
/**
*
* @return
* The title
*/
public String getTitle() {
return title;
}
/**
*
* @param title
* The Title
*/
public void setTitle(String title) {
this.title = title;
}
/**
*
* @return
* The organization
*/
public String getOrganization() {
return organization;
}
/**
*
* @param organization
* The Organization
*/
public void setOrganization(String organization) {
this.organization = organization;
}
/**
*
* @return
* The industry
*/
public String getIndustry() {
return industry;
}
/**
*
* @param industry
* The Industry
*/
public void setIndustry(String industry) {
this.industry = industry;
}
/**
*
* @return
* The location
*/
public String getLocation() {
return location;
}
/**
*
* @param location
* The Location
*/
public void setLocation(String location) {
this.location = location;
}
/**
*
* @return
* The profileSummary
*/
public String getProfileSummary() {
return profileSummary;
}
/**
*
* @param profileSummary
* The ProfileSummary
*/
public void setProfileSummary(String profileSummary) {
this.profileSummary = profileSummary;
}
/**
*
* @return
* The imagePath
*/
public String getImagePath() {
return imagePath;
}
/**
*
* @param imagePath
* The ImagePath
*/
public void setImagePath(String imagePath) {
this.imagePath = imagePath;
}
/**
*
* @return
* The interests
*/
public List < Object > getInterests() {
return interests;
}
/**
*
* @param interests
* The Interests
*/
public void setInterests(List < Object > interests) {
this.interests = interests;
}
public Map < String,
Object > getAdditionalProperties() {
return this.additionalProperties;
}
public void setAdditionalProperty(String name, Object value) {
this.additionalProperties.put(name, value);
}
}
}
这是来自其他客户端的响应
{
-"Data": [2]
-0: {
"UserID": 124
"FirstName": "Mixer"
"LastName": "Development"
"Title": "Flipdex Architect "
"Organization": "CoStrategix"
"Industry": "Software "
"Location": "Bengaluru Area, India"
"ProfileSummary": "Mixer#^*+~|Software engineer?????????? 123456789"@&$)(;:/-.,?!ASDFZgZhXjZkZlZXCVZbNZmQWERTYUIOZp[]{}#%^*+¥£€><~|\_.,?! "
"ImagePath": "https://media.licdn.com/mpr/mprx/0_tiUBxkxpFtDhAIKrczfJBnzj6FMhlWiAOiiJJAUpF8YTlJayP3DBA3Mp5NrycIrrczfJ48nymk-3-DwljKYwBKBKIk-8-DErYKYNylCgh5F24Rlu-3HVpLuuwAHKUDj3c1VURiTsxsU"
"Interests": [0]
}
-1: {
"UserID": 153
"FirstName": "Mixer"
"LastName": "Android"
"Title": "Assistant Manager at CoStrategix"
"Organization": "CoStrategix"
"Industry": "Software"
"Location": "Bengaluru Area, India"
"ProfileSummary": "We have worked with over 35+ product companies and bring the critical thinking and technology expertise to launching your product. We have l"
"ImagePath": "https://media.licdn.com/mpr/mprx/0_0EwKKqh9nkV0X1t3pmPYj6B9ncH0T_TTJy0K9h29KnTYT1u8zElOR_C9q3zGb1gDJyjY4_SnOQUOGFf8zJmuZhhsUQUxGFHTzJmPP3zBKbm1HA1jMe4j1vRQR1T7wFxKysoyq1W3CaQ"
"Interests": [0]
}
"Code": 1
"Message": null
}
这就是我调用 api 的方式
GsonRequest request = new GsonRequest(Request.Method.GET, newConnectionAPI,null, ModelConnection.class, getHeaders(),
new Response.Listener<ModelConnection>() {
@Override
public void onResponse(ModelConnection response) {
if (listener != null) {
listener.networkResponseSuccessful(response);
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.d("volley error", "" + error);
}
});
request.setTag(tag);
request.setRetryPolicy(new DefaultRetryPolicy(15000, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
requestQueue.add(request);
当我调试时，我将所有值都设为 null
谁能帮帮我
【问题讨论】：
-
它不打印任何东西，如果我调试响应显示所有值 null
-
检查您收到的响应代码...
-
首先测试运行你在邮递员中发送的url和数据。那么如果它得到你想要的结果呢？如果是，则检查代码中的错误。你的邮递员回复成功了吗？
-
是的，如果我运行 url，响应就会正确。我已经在下面发布了问题的答案。
标签： java android json api android-volley