如何在Android中使用Retrofit 2发布JSON? [英] How to post JSON using Retrofit 2 in android?
本文介绍了如何在Android中使用Retrofit 2发布JSON?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我是android的新手，我不知道如何使用改造进行POST
我有自己的服务器，可以将数据返回给我，我需要获取该服务器
I have my own server which returns me data, I need to fetch that one
这是网址正文的样子
This is how URL body looks like
我必须发送由edittext占用的城市名称"，并将其传递到"ms_data's"关键字(即，关键字="India")内
I have to send "city name" taken by edittext and pass it inside "ms_data's" keyword, i.e keyword="India"
这是我到目前为止尝试过的...
This is what I have tried so far...
Retrofit Builder类
public class RetrofitBuilder {
public static Retrofit retrofit;
public static final String BASE_URL = "my url";
public static Retrofit getApiData()
{
if(retrofit==null)
{
retrofit = new Retrofit.Builder().baseUrl(BASE_URL)
.addConverterFactory(GsonConverterFactory.create()).build();
}
return retrofit;
}
}
POJO类
public class MessageFromServer {
private String city_name;
public MessageFromServer(String city_name) {
this.city_name = city_name;
}
public String getCity_name() {
return city_name;
}
public void setCity_name(String city_name) {
this.city_name = city_name;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
MessageFromServer that = (MessageFromServer) o;
return city_name != null ? city_name.equals(that.city_name) : that.city_name == null;
}
@Override
public int hashCode() {
return city_name != null ? city_name.hashCode() : 0;
}
@Override
public String toString() {
return "MessageFromServer{" +
"city_name='" + city_name + '\'' +
'}';
}
}
RequestBean类
public class JsonRequestBean {
private String userId;
private String sessionToken;
private String clientType;
private String msServiceType;
private String msService;
private String searchedLoc = null;
private List<String> msdata = null;
public List<String> getMsdata() {
return msdata;
}
public void setMsdata(List<String> msdata) {
this.msdata = msdata;
}
public JsonRequestBean() {
}
public JsonRequestBean(String userId, String sessionToken, String
clientType, String msServiceType, String msService, String
serachedLoc) {
this.userId = userId;
this.sessionToken = sessionToken;
this.clientType = clientType;
this.msServiceType = msServiceType;
this.msService = msService;
this.searchedLoc = serachedLoc;
}
public String getUserId() {
return userId;
}
public void setUserId(String userId) {
this.userId = userId;
}
public String getSessionToken() {
return sessionToken;
}
public void setSessionToken(String sessionToken) {
this.sessionToken = sessionToken;
}
public String getClientType() {
return clientType;
}
public void setClientType(String clientType) {
this.clientType = clientType;
}
public String getMsServiceType() {
return msServiceType;
}
public void setMsServiceType(String msServiceType) {
this.msServiceType = msServiceType;
}
public String getMsService() {
return msService;
}
public void setMsService(String msService) {
this.msService = msService;
}
public String getSerachedLoc() {
return searchedLoc;
}
public void setSerachedLoc(String serachedLoc) {
this.searchedLoc = serachedLoc;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
JsonRequestBean that = (JsonRequestBean) o;
if (userId != null ? !userId.equals(that.userId) : that.userId !=
null) return false;
if (sessionToken != null ? !sessionToken.equals(that.sessionToken)
: that.sessionToken != null)
return false;
if (clientType != null ? !clientType.equals(that.clientType) :
that.clientType != null)
return false;
if (msServiceType != null ?
!msServiceType.equals(that.msServiceType) : that.msServiceType !=
null)
return false;
if (msService != null ? !msService.equals(that.msService) :
that.msService != null)
return false;
return searchedLoc != null ? searchedLoc.equals(that.searchedLoc)
: that.searchedLoc == null;
}
@Override
public int hashCode() {
int result = userId != null ? userId.hashCode() : 0;
result = 31 * result + (sessionToken != null ?
sessionToken.hashCode() : 0);
result = 31 * result + (clientType != null ? clientType.hashCode()
: 0);
result = 31 * result + (msServiceType != null ?
msServiceType.hashCode() : 0);
result = 31 * result + (msService != null ? msService.hashCode() :
0);
result = 31 * result + (searchedLoc != null ?
searchedLoc.hashCode() : 0);
return result;
}
@Override
public String toString() {
return "JsonRequestBean{" +
"userId='" + userId + '\'' +
", sessionToken='" + sessionToken + '\'' +
", clientType='" + clientType + '\'' +
", msServiceType='" + msServiceType + '\'' +
", msService='" + msService + '\'' +
", serachedLoc=" + searchedLoc +
'}';
}
private class Msdata {
public String keyword;
public void setKeyword(String keyword) {
this.keyword = keyword;
}
}
}
ResponseBean类 //获取并存储以便我可以根据需要使用
ResponseBean class //to fetch and store so that i can use however i need
public class JsonResponseBean {
@SerializedName("city_name")
@Expose
public String cityName;
@SerializedName("id")
@Expose
public String id;
public JsonResponseBean(String cityName, String id) {
this.cityName = cityName;
this.id = id;
}
public void setCityName(String cityName) {
this.cityName = cityName;
}
public String getCityName() {
return cityName;
}
public String getId() {
return id;
}
public JsonResponseBean() {
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
JsonResponseBean that = (JsonResponseBean) o;
if (cityName != null ? !cityName.equals(that.cityName) :
that.cityName != null)
return false;
return id != null ? id.equals(that.id) : that.id == null;
}
@Override
public int hashCode() {
int result = cityName != null ? cityName.hashCode() : 0;
result = 31 * result + (id != null ? id.hashCode() : 0);
return result;
}
@Override
public String toString() {
return "JsonRequestBean{" +
"cityName='" + cityName + '\'' +
", id='" + id + '\'' +
'}';
}
}
//内部类，可以看到图像 //我是使用 jsonschema2pojo.org
//inner class, you can see the image // i generated this using jsonschema2pojo.org
class errorCode
{
@SerializedName("data")
@Expose
public List<JsonResponseBean> data = null;
@SerializedName("error_code")
@Expose
public String errorCode;
@SerializedName("message")
@Expose
public String message;
@SerializedName("status")
@Expose
public String status;
}
API类
public interface APIRequest {
@Headers({"Content-Type: application/json","Accept:
application/json"})
@POST("/lfs/city_name")
Call<JsonResponseBean> locData (@Body JsonRequestBean mRequest);
}
我获得实际数据的DisplayActivity
DisplayActivity where i get the actual data
//一旦我打开活动，将称为onfailure
// as soon as i open the activty, onfailure will be called
public class DisplayActivity extends AppCompatActivity {
public static TextView tvM,tvN;
private Button btnFetch;
private EditText etCity;
private static final String TAG = "DisplayActivity";
private static final String VALUE = "displaytest";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_display);
init();
Intent i = getIntent();
String text = i.getStringExtra("HESRU");
tvN.setText(text);
String city_name = etCity.getText().toString();
final List<String> cityList = new ArrayList<>() ;
cityList.add(city_name);
Log.d(TAG, "onCreate: city name-"+city_name);
btnFetch.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Retrofit retrofit = RetrofitBuilder.getApiData();
APIRequest service = retrofit.create(APIRequest.class);
JsonRequestBean jsonRequestBean = new JsonRequestBean();
jsonRequestBean.setClientType("mobile");
jsonRequestBean.setMsServiceType("search");
jsonRequestBean.setMsService("locality");
jsonRequestBean.setMsdata(cityList);
Call<JsonResponseBean> responseBeanCall =
service.locData(jsonRequestBean);
responseBeanCall.enqueue(new Callback<JsonResponseBean>()
{
@Override
public void onResponse(Call<JsonResponseBean> call,
Response<JsonResponseBean> response) {
Log.d(TAG, "onResponse:
"+response.isSuccessful());
Log.d(TAG, "onResponse:, responebody---
"+response.body());
}
@Override
public void onFailure(Call<JsonResponseBean> call,
Throwable t) {
Log.e(TAG, "onFailure: message"+t.getMessage() );
t.printStackTrace();
Toast.makeText(DisplayActivity.this, "something
went wrong", Toast.LENGTH_SHORT).show();
}
});
}
});
}
public void init() {
tvM = (TextView) findViewById(R.id.textViewMSG);
tvN = (TextView) findViewById(R.id.txtViewName);
btnFetch = (Button) findViewById(R.id.buttonfetch);
etCity = (EditText) findViewById(R.id.etCity);
}
请帮助解决此问题，我发现我应该使用HttpUrlConnection，但我不知道该怎么做.
Please help to solve this, i found that I should use HttpUrlConnection, but I dont know how to do that.
推荐答案
请按照以下步骤操作:
1.)首先从 http://www.jsonschema2pojo.org/为您的Post请求创建模式类(MyRequestClass).
2.)还要为来自同一站点的服务器响应创建模式(MyResponseClass).
2.) Also create modal (MyResponseClass) for your server response from same site.
3.)通过创建MyRequestClass对象来设置要发送到服务器的值.
3.) Set values you want to send to your server by creating object of MyRequestClass.
4.)然后在您的界面中使用此方法点击api:
4.) Then hit api using this method in your interface:
@POST("/provider/filter")
Call<MyResponseClass> sendDataToServer(@Body MyRequestClass myModal);
这篇关于如何在Android中使用Retrofit 2发布JSON?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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