Android(安卓)Retrofit2网路编程实现方法详解
16lz
2021-01-26
Android里面本身有OKHttp,不过不是很好用,这里就用Retrofit2,简单好用。
首先,需要加入网络权限:
在build.gradle文件里加入引用包: Gson不用的话,就不需要添加
implementation 'com.squareup.okhttp3:okhttp:3.0.1'
implementation 'com.squareup.retrofit2:retrofit:2.0.2'
implementation 'com.squareup.retrofit2:converter-gson:2.0.2'
这时准备工作做完了。
先创建一个接口文件TestService
package controller.hzl.com.testclient;import java.util.List;import okhttp3.ResponseBody;import retrofit2.Call;import retrofit2.http.Field;import retrofit2.http.FormUrlEncoded;import retrofit2.http.GET;import retrofit2.http.HTTP;import retrofit2.http.POST;import retrofit2.http.Path;public interface TestService { @FormUrlEncoded @POST("getmacaddress") CallTestCall2(@Field("mobile") String mobile); @FormUrlEncoded @POST("getmacaddress") Call TestCall3(@Field("mobile") String mobile);}
这里的@POST("getmacaddress") 的getmacaddress 是URL除IP外的最后一个路径,可以理解为 IP+getmacaddress
这里用的是POST请求方式,@Field("mobile")为请求接口的参数。
写一个实体类模型,用来匹配接收的数据MacAdress
package controller.hzl.com.testclient;public class MacAdress { private String resultMsg; public String getResultMsg() { return resultMsg; } public void setResultMsg(String resultMsg) { this.resultMsg = resultMsg; } public String getResultState() { return resultState; } public void setResultState(String resultState) { this.resultState = resultState; } public String getResultObj() { return resultObj; } public void setResultObj(String resultObj) { this.resultObj = resultObj; } public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } public String getDelta() { return delta; } public void setDelta(String delta) { this.delta = delta; } private String resultState; private String resultObj; private String message; private String delta;}
最后主MainActivity
package controller.hzl.com.testclient;import java.io.File;import java.io.IOException;import java.util.HashMap;import java.util.List;import java.util.Map;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageView;import android.widget.ProgressBar;import android.widget.TextView;import okhttp3.MediaType;import okhttp3.RequestBody;import okhttp3.ResponseBody;import retrofit2.Call;import retrofit2.Callback;import retrofit2.Response;import retrofit2.Retrofit;import retrofit2.converter.gson.GsonConverterFactory;public class MainActivity extends Activity { private Button button1; private Button button2; private Button button3; private Button button4; private Button button5; private Button button6; private Button button7; private Button button8; private ImageView image; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button1 = (Button) findViewById(R.id.button1); button2 = (Button) findViewById(R.id.button2); button3 = (Button) findViewById(R.id.button3); button4 = (Button) findViewById(R.id.button4); button5 = (Button) findViewById(R.id.button5); button6 = (Button) findViewById(R.id.button6); button7 = (Button) findViewById(R.id.button7); button8 = (Button) findViewById(R.id.button8); image = (ImageView) findViewById(R.id.image); button1.setOnClickListener(new OnClickListener(){ @Override public void onClick(View arg0) { GitHubServiceTest(); } }); button2.setOnClickListener(new OnClickListener(){ @Override public void onClick(View arg0) { IWeatherGetTest(); } }); } private void GitHubServiceTest() { Retrofit retrofit = new Retrofit.Builder() .baseUrl("http://115.29.190.99/api/meta/") .addConverterFactory(GsonConverterFactory.create()) .build(); TestService service = retrofit.create(TestService.class); //https://api.github.com/users/octocat/repos Callcall = service.TestCall2("13296540788"); call.enqueue(new Callback () { @Override public void onResponse(Call call, Response response) { // Get result bean from response.body() // List repos = response.body(); System.out.println(response.code()); try { System.out.println(response.body().string()); String jsonstr = new String(response.body().bytes()); System.out.println("jsonstr="+jsonstr); }catch (Exception e){ } // Get header item from response String links = response.headers().get("Link"); showlog("links="+links); /** * 不同于retrofit1 可以同时操作序列化数据javabean和header */ } @Override public void onFailure(Call call, Throwable throwable) { throwable.printStackTrace(); //showlog(throwable.getCause().toString()); } }); } private void IWeatherGetTest() { { Retrofit retrofit = new Retrofit.Builder() .baseUrl("http://115.29.190.99/api/meta/") .addConverterFactory(GsonConverterFactory.create()) .build(); TestService service = retrofit.create(TestService.class); //https://api.github.com/users/octocat/repos Call call = service.TestCall3("13296540788"); call.enqueue(new Callback () { @Override public void onResponse(Call call, Response response) { // Get result bean from response.body() // List repos = response.body(); System.out.println(response.code()); try { System.out.println(response.body().getResultObj()); System.out.println(response.body().getResultState()); }catch (Exception e){ } // Get header item from response String links = response.headers().get("Link"); showlog("links="+links); /** * 不同于retrofit1 可以同时操作序列化数据javabean和header */ } @Override public void onFailure(Call call, Throwable throwable) { throwable.printStackTrace(); //showlog(throwable.getCause().toString()); } }); } } public static void showlog(String info) { System.out.print("Retrofit " + info + "\n"); } }
这里的baseUrl("http://115.29.190.99/api/meta/") 就是URL的前面路径,加上@POST("getmacaddress") 的getmacaddress 其实就是 :http://115.29.190.99/api/meta/getmacaddress 请求的全路径。
两种方式:
TestCall2 是直接接收接收返回json的数据。
TestCall3 是用模型接收返回的json数据。
输出结构为:
代码
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。
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