Question

来自我服务器的Json响应将是这样的：

{"loginResult":"{\"Result\":2,\"UserID\":0,\"ModuleID\":1,\"ModuleName\":\"CRM\"}"}

这是我的服务界面：

public interface RetrofitRest {

@POST("/SF_UserLogin.svc/rest/login/{EMPLOYEECODE}/{PASSWORD}")
Call<ModelLogin>login(@Path("EMPLOYEECODE")String empcode,@Path("PASSWORD")String passwrd);
@GET("/SF_UserLogin.svc/rest/Msg")
Call<ModelLogin>verify(@Body ModelLogin result,@Body ModelLogin user_id);
}

我的主要活动如下：

package com.example.first.servicefirst;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

import com.squareup.okhttp.Interceptor;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import java.io.IOException;
import retrofit.Call;
import retrofit.Callback;
import retrofit.GsonConverterFactory;
import retrofit.Response;
import retrofit.Retrofit;

public class MainActivity extends Activity {
      EditText password,userName;
      Button login,resister;
      ProgressBar progressbar;
      TextView tv;
      String TAG="Fails";
      String url="http://172.16.7.203/sfAppServices/";

      protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        password=(EditText) findViewById(R.id.password);

        userName=(EditText) findViewById(R.id.txtEmployeeCode);

        login=(Button) findViewById(R.id.btnsignin);
        userName.setBackgroundResource(R.drawable.colorfoucs);


        //progess_msz.setVisibility(View.GONE);
        ConnectivityManager cn=(ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo nf=cn.getActiveNetworkInfo();
        if(nf != null && nf.isConnected()==true )
        {
            Toast.makeText(this, "Network Available", Toast.LENGTH_LONG).show();

        } else {
          showAlertDialog(MainActivity.this,"No Network","Please Check Your Network Connectivity",true);
        }

        final   ConnectionDetector    cd = new ConnectionDetector(getApplicationContext());

        login.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {
                progressbar = (ProgressBar) findViewById(R.id.progressBar);
                progressbar.setVisibility(View.VISIBLE);
                String s1 = userName.getText().toString();
                String s2 = password.getText().toString();
                if (s1.equals("")) {
                    userName.setError("Enter User Name");
                }
                if (s2.equals("")) {
                    password.setError("Enter Password");

                }
                try{
                OkHttpClient client = new OkHttpClient();
                client.interceptors().add(new Interceptor() {
                    @Override
                    public com.squareup.okhttp.Response intercept(Chain chain) throws IOException {
                        Request original = chain.request();

                        // Customize the request
                        Request request = original.newBuilder()
                                .header("Accept", "application/json")
                                .header("Authorization", "auth-token")
                                .method(original.method(), original.body())
                                .build();

                        com.squareup.okhttp.Response response = chain.proceed(request);

                        // Customize or return the response
                        return response;
                    }
                });
                Retrofit retro = 

                 newRetrofit.Builder().baseUrl(url).addConverterFactory(GsonConverterFactory.create()).build();
                RetrofitRest retrofitRest = retro.create(RetrofitRest.class);

                Call<ModelLogin>call=retrofitRest.login(s1, s2);
                    String result="";
                    String userid="";
                    Call<ModelLogin> callget=retrofitRest.verify();
                    callget.enqueue(new Callback<ModelLogin>() {
                        @Override
                        public void onResponse(Response<ModelLogin> response, Retrofit retrofit) {
                            if(result.equals(1))
                            {
                                Intent intent=new Intent(MainActivity.this,Main2Activity.class);
                                startActivity(intent);
                            }
                            else{
                                Toast.makeText(MainActivity.this, "Enter Valid Credentials",        
                               Toast.LENGTH_SHORT).show();
                            }
                        }

                        @Override
                        public void onFailure(Throwable t) {

                        }
                    });
              //  call.enqueue(new Callback<ModelLogin>() {
               //     @Override
               //     public void onResponse(Response<ModelLogin> response, Retrofit retrofit) {


                //        }



                //    @Override
                //    public void onFailure(Throwable t) {
                 //       Log.d(TAG,"Error");
                 //   }
                //});


            }catch (Exception e){
                throw e;
                }

            }
        });


     }

     public void showAlertDialog(Context context, String title, String message, Boolean status) {
        AlertDialog alertDialog = new AlertDialog.Builder(context).create();

        // Setting Dialog Title
        alertDialog.setTitle(title);

        // Setting Dialog Message
        alertDialog.setMessage(message);

        // Setting alert dialog icon


        // Setting OK Button
        alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int which) {
            }
        });

        // Showing Alert Message
        alertDialog.show();
    }
}

下面的代码是我的pojo：

package com.example.first.servicefirst;
import com.google.gson.annotations.SerializedName;
public class ModelLogin
    {
    @SerializedName("Result")
    private String result;

    public void setResult(String result) {
        this.result = result;
    }

    public String getResult() {
        return result;
    }

    @SerializedName("UserID")
    private String userid;

    public String getUserid() {
        return userid;
    }

    public void setUserid(String userid) {
        this.userid = userid;
    }


    private String userName;

    public String getUserName() {
        return userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
    private String password;

    public String getPassword() {
        return password;
    }


    public void setPassword(String password) {
        this.password = password;
    }
}

我的疑问是如何从Json字符串中单独检索结果和用户ID。不知道我在哪里做错了。

Answer 1

如何使用改装：

创建POJOs（确切名称为JSON结果KEY或使用SerializedName按名称命名变量）
使用INTERFACEs参数

GET

POST

CALLBACK

使用CALLBACK和success()覆盖方法声明failure()并成功处理响应，如果成功，则在您处理通话失败时失败

Answer 2

而不是

@GET("/SF_UserLogin.svc/rest/Msg") 
Call<ModelLogin>verify(@Body ModelLogin result,@Body ModelLogin user_id);
}

使用

@GET("/SF_UserLogin.svc/rest/Msg") 
Call<ModelLogin>verify(@Query("key_from_REST_API") int result,@Query("key_from_REST_API") int user_id);

Answer 3

您在界面中的方法应该是公开的
方法应包含回调

接口中的方法应该如下所示

@POST("/SF_UserLogin.svc/rest/login/{EMPLOYEECODE}/{PASSWORD}")
public void login(@Path("EMPLOYEECODE")String empcode, @Path("PASSWORD") String password, Callback<ModelLogin> callback);

并执行它：

retrofitRest.login(employee, pass, new Callback<ModelLogin>() {
            @Override
            public void success(ModelLogin model, Response response) {
                // success!
            }

            @Override
            public void failure(RetrofitError error) {
                // fail
            }
        });

顺便说一句您的pojo中的ModuleName和ModuleID在哪里？

如何使用改造从服务器中检索json？

3 个答案: