如何从json数组获取Json对象并将其与模型类一起使用

时间:2018-07-20 07:05:36

标签: java android json android-json

我想使用gson库将接收到的json数据链接到我的pojo类中。我使用了volley库来接收数据。我应该怎么做,以便每当我从pojo类中调用getter方法时我都将获得接收到的json数据

我的Json数据是这种格式。

{
 "vichList":[ {
            id=1,
            username="abc....},
            {....},
            ]
}

我想将此json数据放入我的pojo类中。

Vich.java

public class GetfeedResponse {
private List<Vich> vichList;

public List<Vich> getVichList() {
    return vichList;
}

public void setVichList(List<Vich> vichList) {
    this.vichList = vichList;
}
}

Vich.java

public class Vich {
private int id;
private String username;
private String full_name;
private String createdAt;
private int vich_id;
private String vich_content;
private String city;
private int like_count;

public int getId() {
    return id;
}

public void setId(int id) {
    this.id = id;
}

public String getUsername() {
    return username;
}

public void setUsername(String username) {
    this.username = username;
}

public String getFull_name() {
    return full_name;
}

public void setFull_name(String full_name) {
    this.full_name = full_name;
}

public String getCreatedAt() {
    return createdAt;
}

public void setCreatedAt(String createdAt) {
    this.createdAt = createdAt;
}

public int getVich_id() {
    return vich_id;
}

public void setVich_id(int vich_id) {
    this.vich_id = vich_id;
}

public String getVich_content() {
    return vich_content;
}

public void setVich_content(String vich_content) {
    this.vich_content = vich_content;
}

public String getCity() {
    return city;
}

public void setCity(String city) {
    this.city = city;
}

public int getLike_count() {
    return like_count;
}

public void setLike_count(int like_count) {
    this.like_count = like_count;
}
}

在这里,我使用截击库得到json响应。

httpUtil.getrequest(url,this,new VolleyCallback(){

        @Override
        public void onSuccess(String result){

            GetfeedResponse getfeedResponse = new GetfeedResponse();
           // for(Vich vich : getfeedResponse.getVichList()){
           // }

            Log.d("Response Result:",result);
        }

如何从json数组中获取对象并在pojo类的帮助下使用它们?

2 个答案:

答案 0 :(得分:2)

使用Gson

在gradle中添加以下依赖项:

implementation 'com.google.code.gson:gson:2.8.5'

在您的onSuccess()

GetfeedResponse getfeedResponse=new Gson().fromJson(result, GetfeedResponse.class);

如果您想使用Volley和POJO,最好使用自定义GSON请求。检查此链接:Custom GSON request With Volley

答案 1 :(得分:1)

GSON:

GetfeedResponse parsed = new Gson().fromJson(response, GetfeedResponse.class);

杰克逊:

GetfeedResponse parsed = new ObjectMapper().readValue(response, GetfeedResponse.class);

此外,如果您只想转换Vich项目列表(并相应地剥离了JSON),则可以执行以下操作:

[ {
id=1,
username="abc....},
{....},
]
List<Vich> viches = Arrays.asList(new Gson().fromJson(vichItemsJson, Vich[].class));