Java 解析没有名称的json数组
我试图解析JSON数组并将其添加到适配器类中 我的代码:Java 解析没有名称的json数组,java,android,arrays,android-volley,response,Java,Android,Arrays,Android Volley,Response,我试图解析JSON数组并将其添加到适配器类中 我的代码: String url = "https://api.github.com/users"; JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener<JSONObject>() { @Override public void onRespons
String url = "https://api.github.com/users";
JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
try {
JSONArray results = response.getJSONArray(); // error in this line since there is no array name
for(int i = 0;i < results.length();i++){
JSONObject result = results.getJSONObject(i);
String name = result.getString("login");
users.add(new User(name.substring(0,1).toUpperCase() + name.substring(1),result.getString("avatar_url")));
}
// notify that data has changed in recyclerview
notifyDataSetChanged();
} catch (JSONException e) {
e.printStackTrace();
Log.e("cs50", "Json error", e);
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e("cs50","Github User List error",error);
}
});
stringurl=”https://api.github.com/users";
JsonObjectRequest=newJSONObjectRequest(request.Method.GET,url,null,new Response.Listener()){
@凌驾
公共void onResponse(JSONObject响应){
试一试{
JSONArray results=response.getJSONArray();//此行出错,因为没有数组名
对于(int i=0;i
您可以看到,我正试图从Github API URL获取响应,但我得到了错误,因为没有数组名称,但我的代码需要一个参数。如何解析它?更改此行
StringRequest stringRequest = new StringRequest(Request.Method.GET, "https://api.github.com/users", response -> {
Log.d(TAG, "_ApiGetGithubUsers: " + response);
if (response != null && !response.isEmpty()) {
try {
JSONArray usersArray = new JSONArray(response);
for (int i = 0; i < usersArray.length(); i++) {
JSONObject user = usersArray.getJSONObject(i);
Log.d(TAG, "_ApiGetGithubUsers: "+user.getString("login"));
}
} catch (Exception e) {
Log.d(TAG, "_ApiGetGithubUsers: " + e);
Toast.makeText(context, R.string.someErrorOccurred, Toast.LENGTH_SHORT).show();
}
} else
Toast.makeText(context, R.string.someErrorOccurred, Toast.LENGTH_SHORT).show();
}, error -> {
});
AppController.getInstance().addToRequestQueue(stringRequest);
StringRequest StringRequest=新的StringRequest(Request.Method.GET)https://api.github.com/users“,回应->{
Log.d(标记“\u ApiGetGithubUsers:”+响应);
if(response!=null&&!response.isEmpty()){
试一试{
JSONArray usersArray=新的JSONArray(响应);
对于(int i=0;i{
});
AppController.getInstance().addToRequestQueue(stringRequest);
这是我使用的方法,它正在工作并解析附加日志图像以供参考。
我认为您可以使用改装库,将依赖项添加到app gradle
implementation 'com.squareup.retrofit2:converter-gson:2.5.0'
implementation 'com.squareup.retrofit2:retrofit:2.5'
创建用户类以获取响应
public class User {
@SerializedName("login")
@Expose
private String login;
@SerializedName("id")
@Expose
private Integer id;
@SerializedName("node_id")
@Expose
private String nodeId;
@SerializedName("avatar_url")
@Expose
private String avatarUrl;
@SerializedName("gravatar_id")
@Expose
private String gravatarId;
@SerializedName("url")
@Expose
private String url;
@SerializedName("html_url")
@Expose
private String htmlUrl;
@SerializedName("followers_url")
@Expose
private String followersUrl;
@SerializedName("following_url")
@Expose
private String followingUrl;
@SerializedName("gists_url")
@Expose
private String gistsUrl;
@SerializedName("starred_url")
@Expose
private String starredUrl;
@SerializedName("subscriptions_url")
@Expose
private String subscriptionsUrl;
@SerializedName("organizations_url")
@Expose
private String organizationsUrl;
@SerializedName("repos_url")
@Expose
private String reposUrl;
@SerializedName("events_url")
@Expose
private String eventsUrl;
@SerializedName("received_events_url")
@Expose
private String receivedEventsUrl;
@SerializedName("type")
@Expose
private String type;
@SerializedName("site_admin")
@Expose
private Boolean siteAdmin;
public String getLogin() {
return login;
}
public void setLogin(String login) {
this.login = login;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getNodeId() {
return nodeId;
}
public void setNodeId(String nodeId) {
this.nodeId = nodeId;
}
public String getAvatarUrl() {
return avatarUrl;
}
public void setAvatarUrl(String avatarUrl) {
this.avatarUrl = avatarUrl;
}
public String getGravatarId() {
return gravatarId;
}
public void setGravatarId(String gravatarId) {
this.gravatarId = gravatarId;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getHtmlUrl() {
return htmlUrl;
}
public void setHtmlUrl(String htmlUrl) {
this.htmlUrl = htmlUrl;
}
public String getFollowersUrl() {
return followersUrl;
}
public void setFollowersUrl(String followersUrl) {
this.followersUrl = followersUrl;
}
public String getFollowingUrl() {
return followingUrl;
}
public void setFollowingUrl(String followingUrl) {
this.followingUrl = followingUrl;
}
public String getGistsUrl() {
return gistsUrl;
}
public void setGistsUrl(String gistsUrl) {
this.gistsUrl = gistsUrl;
}
public String getStarredUrl() {
return starredUrl;
}
public void setStarredUrl(String starredUrl) {
this.starredUrl = starredUrl;
}
public String getSubscriptionsUrl() {
return subscriptionsUrl;
}
public void setSubscriptionsUrl(String subscriptionsUrl) {
this.subscriptionsUrl = subscriptionsUrl;
}
public String getOrganizationsUrl() {
return organizationsUrl;
}
public void setOrganizationsUrl(String organizationsUrl) {
this.organizationsUrl = organizationsUrl;
}
public String getReposUrl() {
return reposUrl;
}
public void setReposUrl(String reposUrl) {
this.reposUrl = reposUrl;
}
public String getEventsUrl() {
return eventsUrl;
}
public void setEventsUrl(String eventsUrl) {
this.eventsUrl = eventsUrl;
}
public String getReceivedEventsUrl() {
return receivedEventsUrl;
}
public void setReceivedEventsUrl(String receivedEventsUrl) {
this.receivedEventsUrl = receivedEventsUrl;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public Boolean getSiteAdmin() {
return siteAdmin;
}
public void setSiteAdmin(Boolean siteAdmin) {
this.siteAdmin = siteAdmin;
}
@Override
public String toString() {
return "User{" +
"login='" + login + '\'' +
", id=" + id +
", nodeId='" + nodeId + '\'' +
", avatarUrl='" + avatarUrl + '\'' +
", gravatarId='" + gravatarId + '\'' +
", url='" + url + '\'' +
", htmlUrl='" + htmlUrl + '\'' +
", followersUrl='" + followersUrl + '\'' +
", followingUrl='" + followingUrl + '\'' +
", gistsUrl='" + gistsUrl + '\'' +
", starredUrl='" + starredUrl + '\'' +
", subscriptionsUrl='" + subscriptionsUrl + '\'' +
", organizationsUrl='" + organizationsUrl + '\'' +
", reposUrl='" + reposUrl + '\'' +
", eventsUrl='" + eventsUrl + '\'' +
", receivedEventsUrl='" + receivedEventsUrl + '\'' +
", type='" + type + '\'' +
", siteAdmin=" + siteAdmin +
'}';
}
}
为端点URL创建API接口
public interface APIInterface {
@GET("/users")
Call<List<User>> getGitHubUser();
}
然后调用下面的方法来获取解析数据
public void getUserList() {
APIInterface apiInterface=APIClient.getApiInterface();
Call<List<User>> call= apiInterface.getGitHubUser();
call.enqueue(new Callback<List<User>>() {
@Override
public void onResponse(Call<List<User>> call, Response<List<User>> response) {
List<User> userList= response.body();
System.out.println(userList);
}
@Override
public void onFailure(Call<List<User>> call, Throwable t) {
}
});
}
public void getUserList(){
APIInterface APIInterface=APIClient.getApiInterface();
Call Call=apinterface.getGitHubUser();
call.enqueue(新回调(){
@凌驾
公共void onResponse(调用、响应){
List userList=response.body();
System.out.println(用户列表);
}
@凌驾
失败时公共无效(调用调用,可丢弃的t){
}
});
}
您也可以发布回复吗?或者Json数组的基本结构也很好,我已经给出了URL.Github用户列表错误2020-04-26 16:59:55.742 2936-2936/com.example.Github_api E/cs50:com.android.volley.ParseError:org.Json.JSONException:Value[{“login”:“mojombo”,AppController可以找到吗?这是因为我使用volley来获得结果这里是一个很棒的教程[
public void getUserList() {
APIInterface apiInterface=APIClient.getApiInterface();
Call<List<User>> call= apiInterface.getGitHubUser();
call.enqueue(new Callback<List<User>>() {
@Override
public void onResponse(Call<List<User>> call, Response<List<User>> response) {
List<User> userList= response.body();
System.out.println(userList);
}
@Override
public void onFailure(Call<List<User>> call, Throwable t) {
}
});
}