Android 如何从以下动态JSON生成普通的旧Java对象
我需要在android中使用2从JSON生成POJO,但问题是标签会通过提供不同的查询而不断变化 JSON 1Android 如何从以下动态JSON生成普通的旧Java对象,android,json,retrofit2,pojo,Android,Json,Retrofit2,Pojo,我需要在android中使用2从JSON生成POJO,但问题是标签会通过提供不同的查询而不断变化 JSON 1 { "query":{ "pages":{ "4803":{ "pageid":4803, "ns":0, "title":"hello", "extract":"Greating to some one" }}}} JSON 2 { "query":{
{ "query":{
"pages":{
"4803":{
"pageid":4803,
"ns":0,
"title":"hello",
"extract":"Greating to some one"
}}}}
JSON 2
{ "query":{
"pages":{
"2354":{
"pageid":2354,
"ns":0,
"title":"Nice",
"extract":"Say Appreciation to someone"
}}}}
在上面的两个JSONs中,值正在变化,例如4803和2354类似地,我不知道所有的值,所以如何生成POJO,我尝试了很多,但它以\u 4803和\u 2354的名义创建类,但实际上通过向API提供不同的查询,值发生了变化
这是我所有的Java代码
1.
public class Example {
@SerializedName("query")
@Expose
private Query query;
public Query getQuery() {
return query;
}
public void setQuery(Query query) {
this.query = query;
}
}
public class modelClass {
@SerializedName("pageid")
@Expose
private Integer pageid;
@SerializedName("ns")
@Expose
private Integer ns;
@SerializedName("title")
@Expose
private String title;
@SerializedName("extract")
@Expose
private String extract;
public Integer getPageid() {
return pageid;
}
public void setPageid(Integer pageid) {
this.pageid = pageid;
}
public Integer getNs() {
return ns;
}
public void setNs(Integer ns) {
this.ns = ns;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getExtract() {
return extract;
}
public void setExtract(String extract) {
this.extract = extract;
}
}
public class Pages {
@SerializedName("pages")
@Expose
private Map<String, modelClass> page;
public Map<String, modelClass> getPage() {
return page;
}
public void setPage(Map<String, modelClass> page) {
this.page = page;
}
}
public class Query {
@SerializedName("pages")
@Expose
private Pages pages;
public Pages getPages() {
return pages;
}
public void setPages(Pages pages) {
this.pages = pages;
}
}
2.
public class Example {
@SerializedName("query")
@Expose
private Query query;
public Query getQuery() {
return query;
}
public void setQuery(Query query) {
this.query = query;
}
}
public class modelClass {
@SerializedName("pageid")
@Expose
private Integer pageid;
@SerializedName("ns")
@Expose
private Integer ns;
@SerializedName("title")
@Expose
private String title;
@SerializedName("extract")
@Expose
private String extract;
public Integer getPageid() {
return pageid;
}
public void setPageid(Integer pageid) {
this.pageid = pageid;
}
public Integer getNs() {
return ns;
}
public void setNs(Integer ns) {
this.ns = ns;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getExtract() {
return extract;
}
public void setExtract(String extract) {
this.extract = extract;
}
}
public class Pages {
@SerializedName("pages")
@Expose
private Map<String, modelClass> page;
public Map<String, modelClass> getPage() {
return page;
}
public void setPage(Map<String, modelClass> page) {
this.page = page;
}
}
public class Query {
@SerializedName("pages")
@Expose
private Pages pages;
public Pages getPages() {
return pages;
}
public void setPages(Pages pages) {
this.pages = pages;
}
}
3.
public class Example {
@SerializedName("query")
@Expose
private Query query;
public Query getQuery() {
return query;
}
public void setQuery(Query query) {
this.query = query;
}
}
public class modelClass {
@SerializedName("pageid")
@Expose
private Integer pageid;
@SerializedName("ns")
@Expose
private Integer ns;
@SerializedName("title")
@Expose
private String title;
@SerializedName("extract")
@Expose
private String extract;
public Integer getPageid() {
return pageid;
}
public void setPageid(Integer pageid) {
this.pageid = pageid;
}
public Integer getNs() {
return ns;
}
public void setNs(Integer ns) {
this.ns = ns;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getExtract() {
return extract;
}
public void setExtract(String extract) {
this.extract = extract;
}
}
public class Pages {
@SerializedName("pages")
@Expose
private Map<String, modelClass> page;
public Map<String, modelClass> getPage() {
return page;
}
public void setPage(Map<String, modelClass> page) {
this.page = page;
}
}
public class Query {
@SerializedName("pages")
@Expose
private Pages pages;
public Pages getPages() {
return pages;
}
public void setPages(Pages pages) {
this.pages = pages;
}
}
6。从mainActivity调用但返回nullpointerException,因此如何提取值响应
ApiService apiService = RetroClient.getApiService();
Call<Example> call = apiService.getWordList(//here i passed value, that return json//);
call.enqueue(new Callback<Example>() {
@Override
public void onResponse(Call<Example> call, Response<Example> response) {
if (response.body() != null) {
// how get json value here
}
}
@Override
public void onFailure(Call<Example> call, Throwable t) {
}
});
ApiService ApiService=RetroClient.getApiService();
Call Call=apiService.getWordList(//这里我传递了值,返回json//);
call.enqueue(新回调(){
@凌驾
公共void onResponse(调用、响应){
if(response.body()!=null){
//如何在这里获取json值
}
}
@凌驾
失败时公共无效(调用调用,可丢弃的t){
}
});
请告诉我如何解决这样的问题。谢谢。在使用动态键的情况下,您可以使用Map。比如说
@SerializedName("pages")
@Expose
private Map<String, yourmodelclassforinsidedynamickeyvalue> page;
之后,从映射值可以得到模型类。若你们需要钥匙,你们可以从地图钥匙那个里得到。你们可以在动态钥匙的情况下使用地图。比如说
@SerializedName("pages")
@Expose
private Map<String, yourmodelclassforinsidedynamickeyvalue> page;
之后,从映射值可以得到模型类。如果您需要密钥,您可以从map key获取该密钥。在使用动态标记时,您需要使用hashMap 像 然后在你的回答中使用这个
if (response.body() != null) {
Example numberResponse = response.body();
String keys = numberResponse.getQuery().getPages().toString();
Map<String, Pages> entityList =
response.body().getQuery().getPages();
for (String mapKey : entityList.keySet()) {
String text = entityList.get(mapKey).getExtract();
// use text where you want :)
}}
if(response.body()!=null){
示例numberResponse=response.body();
字符串键=numberResponse.getQuery().getPages().toString();
映射实体列表=
response.body().getQuery().getPages();
for(字符串映射键:entityList.keySet()){
String text=entityList.get(mapKey.getExtract();
//在需要的位置使用文本:)
}}
在使用动态标记时,您需要使用hashMap
像
然后在你的回答中使用这个
if (response.body() != null) {
Example numberResponse = response.body();
String keys = numberResponse.getQuery().getPages().toString();
Map<String, Pages> entityList =
response.body().getQuery().getPages();
for (String mapKey : entityList.keySet()) {
String text = entityList.get(mapKey).getExtract();
// use text where you want :)
}}
if(response.body()!=null){
示例numberResponse=response.body();
字符串键=numberResponse.getQuery().getPages().toString();
映射实体列表=
response.body().getQuery().getPages();
for(字符串映射键:entityList.keySet()){
String text=entityList.get(mapKey.getExtract();
//在需要的位置使用文本:)
}}
错误已解决,但调用其返回空值的问题已解决,请检查我的更新问题@AMITROR;但调用其返回空值的问题已解决,请检查我的更新问题@Amit