我正在实现一个改进的2界面来解析JSON元素（视频网址，缩略图，标题等）。
JSONschema2Pojo产生了4个pojo类，但主要/根目录是VideoInfo（从不介意实现Parcelable，我还没有做任何事情）
缺少@SerializedName("....")是否会影响任何事情，知道这是由jsonschema2pojo自动生成的？更新：生成新的pojo类，这次使用Gson注释(@SerializedName("") and @Expose)，但仍然遇到同样的问题。
import android.os.Parcel;
import android.os.Parcelable;
import java.util.ArrayList;
import java.util.List;
public class VideoInfo implements Parcelable {
private List<Item> items = new ArrayList<Item>();
private int pageNumber;
private int pageSize;
private int totalCount;
/**
* No args constructor for use in serialization
*
*/
public VideoInfo() {
}
/**
*
* @param totalCount
* @param items
* @param pageSize
* @param pageNumber
*/
public VideoInfo(List<Item> items, int pageNumber, int pageSize, int totalCount) {
this.items = items;
this.pageNumber = pageNumber;
this.pageSize = pageSize;
this.totalCount = totalCount;
}
/**
*
* @return
* The items
*/
public List<Item> getItems() {
return items;
}
/**
*
* @param items
* The items
*/
public void setItems(List<Item> items) {
this.items = items;
}
/**
*
* @return
* The pageNumber
*/
public int getPageNumber() {
return pageNumber;
}
/**
*
* @param pageNumber
* The page_number
*/
public void setPageNumber(int pageNumber) {
this.pageNumber = pageNumber;
}
/**
*
* @return
* The pageSize
*/
public int getPageSize() {
return pageSize;
}
/**
*
* @param pageSize
* The page_size
*/
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
/**
*
* @return
* The totalCount
*/
public int getTotalCount() {
return totalCount;
}
/**
*
* @param totalCount
* The total_count
*/
public void setTotalCount(int totalCount) {
this.totalCount = totalCount;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
}
}
UPDATE ：在上面的VideoInfo类中，您可以看到private List<Item> items = new ArrayList<Item>();这是因为还有另一个pojo类，它有一个tiems列表，如下所示：
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;
import java.util.ArrayList;
import java.util.List;
public class Item {
@SerializedName("id")
@Expose
private int id;
@SerializedName("name")
@Expose
private String name;
@SerializedName("shortDescription")
@Expose
private String shortDescription;
@SerializedName("creationDate")
@Expose
private String creationDate;
@SerializedName("publishedDate")
@Expose
private String publishedDate;
@SerializedName("linkURL")
@Expose
private String linkURL;
@SerializedName("linkText")
@Expose
private String linkText;
@SerializedName("tags")
@Expose
private List<String> tags = new ArrayList<String>();
@SerializedName("videoStillURL")
@Expose
private String videoStillURL;
@SerializedName("thumbnailURL")
@Expose
private String thumbnailURL;
@SerializedName("length")
@Expose
private int length;
@SerializedName("renditions")
@Expose
private List<Rendition> renditions = new ArrayList<Rendition>();
@SerializedName("IOSRenditions")
@Expose
private List<IOSRendition> IOSRenditions = new ArrayList<IOSRendition>();
@SerializedName("HDSRenditions")
@Expose
private List<Object> HDSRenditions = new ArrayList<Object>();
/**
* No args constructor for use in serialization
*
*/
public Item() {
}
/**
*
* @param tags
* @param videoStillURL
* @param HDSRenditions
* @param id
* @param creationDate
* @param IOSRenditions
* @param linkText
* @param shortDescription
* @param renditions
* @param name
* @param linkURL
* @param length
* @param publishedDate
* @param thumbnailURL
*/
public Item(int id, String name, String shortDescription, String creationDate, String publishedDate, String linkURL, String linkText, List<String> tags, String videoStillURL, String thumbnailURL, int length, List<Rendition> renditions, List<IOSRendition> IOSRenditions, List<Object> HDSRenditions) {
this.id = id;
this.name = name;
this.shortDescription = shortDescription;
this.creationDate = creationDate;
this.publishedDate = publishedDate;
this.linkURL = linkURL;
this.linkText = linkText;
this.tags = tags;
this.videoStillURL = videoStillURL;
this.thumbnailURL = thumbnailURL;
this.length = length;
this.renditions = renditions;
this.IOSRenditions = IOSRenditions;
this.HDSRenditions = HDSRenditions;
}
/**
*
* @return
* The id
*/
public int getId() {
return id;
}
/**
*
* @param id
* The id
*/
public void setId(int id) {
this.id = id;
}
/**
*
* @return
* The name
*/
public String getName() {
return name;
}
/**
*
* @param name
* The name
*/
public void setName(String name) {
this.name = name;
}
/**
*
* @return
* The shortDescription
*/
public String getShortDescription() {
return shortDescription;
}
/**
*
* @param shortDescription
* The shortDescription
*/
public void setShortDescription(String shortDescription) {
this.shortDescription = shortDescription;
}
/**
*
* @return
* The creationDate
*/
public String getCreationDate() {
return creationDate;
}
/**
*
* @param creationDate
* The creationDate
*/
public void setCreationDate(String creationDate) {
this.creationDate = creationDate;
}
/**
*
* @return
* The publishedDate
*/
public String getPublishedDate() {
return publishedDate;
}
/**
*
* @param publishedDate
* The publishedDate
*/
public void setPublishedDate(String publishedDate) {
this.publishedDate = publishedDate;
}
/**
*
* @return
* The linkURL
*/
public String getLinkURL() {
return linkURL;
}
/**
*
* @param linkURL
* The linkURL
*/
public void setLinkURL(String linkURL) {
this.linkURL = linkURL;
}
/**
*
* @return
* The linkText
*/
public String getLinkText() {
return linkText;
}
/**
*
* @param linkText
* The linkText
*/
public void setLinkText(String linkText) {
this.linkText = linkText;
}
/**
*
* @return
* The tags
*/
public List<String> getTags() {
return tags;
}
/**
*
* @param tags
* The tags
*/
public void setTags(List<String> tags) {
this.tags = tags;
}
/**
*
* @return
* The videoStillURL
*/
public String getVideoStillURL() {
return videoStillURL;
}
/**
*
* @param videoStillURL
* The videoStillURL
*/
public void setVideoStillURL(String videoStillURL) {
this.videoStillURL = videoStillURL;
}
/**
*
* @return
* The thumbnailURL
*/
public String getThumbnailURL() {
return thumbnailURL;
}
/**
*
* @param thumbnailURL
* The thumbnailURL
*/
public void setThumbnailURL(String thumbnailURL) {
this.thumbnailURL = thumbnailURL;
}
/**
*
* @return
* The length
*/
public int getLength() {
return length;
}
/**
*
* @param length
* The length
*/
public void setLength(int length) {
this.length = length;
}
/**
*
* @return
* The renditions
*/
public List<Rendition> getRenditions() {
return renditions;
}
/**
*
* @param renditions
* The renditions
*/
public void setRenditions(List<Rendition> renditions) {
this.renditions = renditions;
}
/**
*
* @return
* The IOSRenditions
*/
public List<IOSRendition> getIOSRenditions() {
return IOSRenditions;
}
/**
*
* @param IOSRenditions
* The IOSRenditions
*/
public void setIOSRenditions(List<IOSRendition> IOSRenditions) {
this.IOSRenditions = IOSRenditions;
}
/**
*
* @return
* The HDSRenditions
*/
public List<Object> getHDSRenditions() {
return HDSRenditions;
}
/**
*
* @param HDSRenditions
* The HDSRenditions
*/
public void setHDSRenditions(List<Object> HDSRenditions) {
this.HDSRenditions = HDSRenditions;
}
}
UPDATE ：上面你可以看到我们定义了private List<Rendition> renditions = new ArrayList<Rendition>();在另一个pojo类中定义的Rendition.class：
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;
public class Rendition {
@SerializedName("audioOnly")
@Expose
private boolean audioOnly;
@SerializedName("controllerType")
@Expose
private String controllerType;
@SerializedName("displayName")
@Expose
private String displayName;
@SerializedName("encodingRate")
@Expose
private int encodingRate;
@SerializedName("frameHeight")
@Expose
private int frameHeight;
@SerializedName("frameWidth")
@Expose
private int frameWidth;
@SerializedName("id")
@Expose
private int id;
@SerializedName("referenceId")
@Expose
private Object referenceId;
@SerializedName("remoteStreamName")
@Expose
private Object remoteStreamName;
@SerializedName("remoteUrl")
@Expose
private Object remoteUrl;
@SerializedName("size")
@Expose
private int size;
@SerializedName("uploadTimestampMillis")
@Expose
private int uploadTimestampMillis;
@SerializedName("url")
@Expose
private String url;
@SerializedName("videoCodec")
@Expose
private String videoCodec;
@SerializedName("videoContainer")
@Expose
private String videoContainer;
@SerializedName("videoDuration")
@Expose
private int videoDuration;
/**
* No args constructor for use in serialization
*
*/
public Rendition() {
}
/**
*
* @param controllerType
* @param encodingRate
* @param referenceId
* @param url
* @param size
* @param id
* @param uploadTimestampMillis
* @param frameWidth
* @param remoteUrl
* @param videoContainer
* @param remoteStreamName
* @param displayName
* @param videoCodec
* @param videoDuration
* @param audioOnly
* @param frameHeight
*/
public Rendition(boolean audioOnly, String controllerType, String displayName, int encodingRate, int frameHeight, int frameWidth, int id, Object referenceId, Object remoteStreamName, Object remoteUrl, int size, int uploadTimestampMillis, String url, String videoCodec, String videoContainer, int videoDuration) {
this.audioOnly = audioOnly;
this.controllerType = controllerType;
this.displayName = displayName;
this.encodingRate = encodingRate;
this.frameHeight = frameHeight;
this.frameWidth = frameWidth;
this.id = id;
this.referenceId = referenceId;
this.remoteStreamName = remoteStreamName;
this.remoteUrl = remoteUrl;
this.size = size;
this.uploadTimestampMillis = uploadTimestampMillis;
this.url = url;
this.videoCodec = videoCodec;
this.videoContainer = videoContainer;
this.videoDuration = videoDuration;
}
/**
*
* @return
* The audioOnly
*/
public boolean isAudioOnly() {
return audioOnly;
}
/**
*
* @param audioOnly
* The audioOnly
*/
public void setAudioOnly(boolean audioOnly) {
this.audioOnly = audioOnly;
}
/**
*
* @return
* The controllerType
*/
public String getControllerType() {
return controllerType;
}
/**
*
* @param controllerType
* The controllerType
*/
public void setControllerType(String controllerType) {
this.controllerType = controllerType;
}
/**
*
* @return
* The displayName
*/
public String getDisplayName() {
return displayName;
}
/**
*
* @param displayName
* The displayName
*/
public void setDisplayName(String displayName) {
this.displayName = displayName;
}
/**
*
* @return
* The encodingRate
*/
public int getEncodingRate() {
return encodingRate;
}
/**
*
* @param encodingRate
* The encodingRate
*/
public void setEncodingRate(int encodingRate) {
this.encodingRate = encodingRate;
}
/**
*
* @return
* The frameHeight
*/
public int getFrameHeight() {
return frameHeight;
}
/**
*
* @param frameHeight
* The frameHeight
*/
public void setFrameHeight(int frameHeight) {
this.frameHeight = frameHeight;
}
/**
*
* @return
* The frameWidth
*/
public int getFrameWidth() {
return frameWidth;
}
/**
*
* @param frameWidth
* The frameWidth
*/
public void setFrameWidth(int frameWidth) {
this.frameWidth = frameWidth;
}
/**
*
* @return
* The id
*/
public int getId() {
return id;
}
/**
*
* @param id
* The id
*/
public void setId(int id) {
this.id = id;
}
/**
*
* @return
* The referenceId
*/
public Object getReferenceId() {
return referenceId;
}
/**
*
* @param referenceId
* The referenceId
*/
public void setReferenceId(Object referenceId) {
this.referenceId = referenceId;
}
/**
*
* @return
* The remoteStreamName
*/
public Object getRemoteStreamName() {
return remoteStreamName;
}
/**
*
* @param remoteStreamName
* The remoteStreamName
*/
public void setRemoteStreamName(Object remoteStreamName) {
this.remoteStreamName = remoteStreamName;
}
/**
*
* @return
* The remoteUrl
*/
public Object getRemoteUrl() {
return remoteUrl;
}
/**
*
* @param remoteUrl
* The remoteUrl
*/
public void setRemoteUrl(Object remoteUrl) {
this.remoteUrl = remoteUrl;
}
/**
*
* @return
* The size
*/
public int getSize() {
return size;
}
/**
*
* @param size
* The size
*/
public void setSize(int size) {
this.size = size;
}
/**
*
* @return
* The uploadTimestampMillis
*/
public int getUploadTimestampMillis() {
return uploadTimestampMillis;
}
/**
*
* @param uploadTimestampMillis
* The uploadTimestampMillis
*/
public void setUploadTimestampMillis(int uploadTimestampMillis) {
this.uploadTimestampMillis = uploadTimestampMillis;
}
/**
*
* @return
* The url
*/
public String getUrl() {
return url;
}
/**
*
* @param url
* The url
*/
public void setUrl(String url) {
this.url = url;
}
/**
*
* @return
* The videoCodec
*/
public String getVideoCodec() {
return videoCodec;
}
/**
*
* @param videoCodec
* The videoCodec
*/
public void setVideoCodec(String videoCodec) {
this.videoCodec = videoCodec;
}
/**
*
* @return
* The videoContainer
*/
public String getVideoContainer() {
return videoContainer;
}
/**
*
* @param videoContainer
* The videoContainer
*/
public void setVideoContainer(String videoContainer) {
this.videoContainer = videoContainer;
}
/**
*
* @return
* The videoDuration
*/
public int getVideoDuration() {
return videoDuration;
}
/**
*
* @param videoDuration
* The videoDuration
*/
public void setVideoDuration(int videoDuration) {
this.videoDuration = videoDuration;
}
}
我创建了一个改装界面VideoInterface.class
import retrofit2.Call; import retrofit2.http.GET;
/**
* retrofit 2 interface
*/
public interface VideoInterface {
String apiURL = ".....";
@GET(apiURL)
public Call<VideosResponse> listVideos();
}
我创建了一个响应/解析类VideosResponse.java
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import java.util.ArrayList;
import java.util.List;
/**
*/
public class VideosResponse {
//initalizing the collection
List<VideoInfo> videos;
public VideosResponse() {
videos = new ArrayList<VideoInfo>();
}
//parsing the response
public static VideosResponse parseJSON(String response) {
Gson gson = new GsonBuilder().create();
VideosResponse videosResponse = gson.fromJson(response, VideosResponse.class);
return videosResponse;
}
}
更新：最后我正在调用API，但无法获取单个元素
我知道我应该能够做一些像 response.body().getItem().getID().getRendition().getUrl() 这样的事情，但是我没有在自动完成中看到它，如果我写它就会出错。
此代码位于我的onResume()方法中，我之前评论public static的原因是因为onResume()
// Creating a simple REST adapter which points the API
// public static
final String BASE_URL = "http://api......";
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
// Creating an instance of our API interface.
VideoInterface service = retrofit.create(VideoInterface.class);
Call<VideosResponse> call = service.listVideos();
call.enqueue(new Callback<VideosResponse>() {
@Override
public void onResponse(Call<VideosResponse> call, Response<VideosResponse> response) {
VideosResponse videoResponse = response.body();
}
@Override
public void onFailure(Call<VideosResponse> call, Throwable t) {
}});
到最后一步的一切似乎都没问题（没有错误），以下日志给了我：
Log.d("Videos ", response.message()); //OK
Log.d("Videos ", String.valueOf(response.isSuccess())); //TRUE
Log.d("Videos ", String.valueOf(response.code())); //200
但我仍然无法获得我需要的字符串。当我打印响应日志时显示响应VideosResponse videoResponse = response.body();我得到：VideosResponse @ 3b8bfaa4，这是正常的吗？我怎么用这个？
建议使用parcelable？它会改变什么吗？
答案 0 :(得分：1)
我知道我应该可以做一些像response.body（）。item.getID（）这样的事情
嗯，不，不是基于我理解的代码。
response此处似乎是Response<VideosResponse> response response.body()因此将是VideosResponse response.body().item将失败，因为VideosResponse没有item字段当我打印响应的日志时显示响应VideosResponse videoResponse = response.body（）;我得到：VideosResponse @ 3b8bfaa4，这是正常的吗？
是。这是未覆盖toString()的Java对象的默认toString()输出。这表明response.body()是VideosResponse。
我创建了一个响应/解析类VideosResponse.java
然后您知道VideosResponse没有任何名为item的内容。 Gson不会为您的类添加方法;它只根据解析一些JSON来填充这些类的实例。
如果您希望VideosResponse拥有item字段，请确保您的JSON中存在该字段，然后修改VideosResponse以获得item字段。
答案 1 :(得分：1)
您需要向我们展示json响应，或者您也可以自己解决。基本上对象属性名称必须与json属性相匹配，你可以调试来查看元素是否正在接收值，如果它们不是那么添加 SerializedName 注释。从那时起，有两种可能性，你有一个对象或一个数组。您可以为此进一步创建POJO或创建List类型的属性。
答案 2 :(得分：0)
将一个toString（）添加到您的VideoInfo类，然后onResponse，您可以使用类似
的内容记录返回列表的单个对象for（VideoInfo videoInfo：videoResponses） Log.d（LOG_TAG，＆＃34; VideoInfo：＆＃34; + videoInfo.toString（））;