java retrofit是什么？让我们一起来了解一下吧！
java retrofit是Java在开发时的一种轻量级http请求部分组件，它的作用是能够像接口调用这种方法来进行http调用。Retrofit在它的前期主要是应用在安卓的网络请求框架，之后也被用于java。
更确定的说，Retrofit 是一个 restful 的 http 网络请求框架的封装。
1. App应用程序通过 Retrofit 请求网络，事实上是通过应用 Retrofit 接口层封装去获得参数、Header、Url 等信息，然后由 OkHttp 完成后面的请求动作。
2. 在服务端返回数据之后，OkHttp 把原先的结果过渡给 Retrofit，Retrofit按照用户的需求对结果进行分析。所以，网络请求的本质事实上依旧是由OkHttp完成的，retrofit只是帮使用者来进行工作简便化的，比如配置网络，处理数据等工作，提高这一系列操作的复用性。
实战演练，具体步骤如下：
package request.http.com.httprequest.activity;
import android.app.Activity;
import android.os.Bundle;
import android.support.v7.widget.DefaultItemAnimator;
import android.support.v7.widget.DividerItemDecoration;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.widget.ImageView;
import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.Unbinder;
import okhttp3.OkHttpClient;
import okhttp3.RequestBody;
import okhttp3.logging.HttpLoggingInterceptor;
import request.http.com.httprequest.R;
import request.http.com.httprequest.adapter.RecyclerViewAdapter;
import request.http.com.httprequest.api.RequestApi;
import request.http.com.httprequest.bean.TokenInfoBean;
import request.http.com.httprequest.bean.goodsBean;
import request.http.com.httprequest.bean.goodsSuitBean;
import request.http.com.httprequest.bean.singleBean;
import request.http.com.httprequest.common.CommonFunc;
import request.http.com.httprequest.common.Tools;
import request.http.com.httprequest.common.retrofitCommon;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import java.util.ArrayList;
import java.util.HashMap;
public class MainActivity extends Activity {
private Unbinder unbinder;
@BindView(R.id.lv_showDetail)
RecyclerView lv_showDetail;
private ArrayList dataBeanList;
private RecyclerViewAdapter adapter;
private DefaultItemAnimator defaultItemAnimator;
private RequestApi requestApi;
private RequestBody body;
private HashMap hashMap;
private String authorizationCode;
private String appKey;
private singleBean singleBean;
private TokenInfoBean tokenInfoBean;
private ArrayList singleList;
private goodsSuitBean goodsSuitBean;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
unbinder = ButterKnife.bind(this);
initView();
}
public void initRecyclerView(){
LinearLayoutManager manager = new LinearLayoutManager(this);
lv_showDetail.setLayoutManager(manager);
DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(this, DividerItemDecoration.VERTICAL);
dividerItemDecoration.setDrawable(getApplicationContext().getDrawable(R.drawable.rv_item_devider));
lv_showDetail.addItemDecoration(dividerItemDecoration);
adapter = new RecyclerViewAdapter(MainActivity.this, dataBeanList);
lv_showDetail.setAdapter(adapter);
adapter.notifyDataSetChanged();
}
public void initView() {
retrofitCommon retrofitCommon = new retrofitCommon();
authorizationCode = CommonFunc.getBasicAuthorizationCode("user","asdasdsd");
appKey = CommonFunc.getFinplexAppKey();
requestApi= retrofitCommon.retrofitRequestPost(“访问接口的地址”);
body = retrofitCommon.getRequestBody("code","1232131312");
hashMap = retrofitCommon.getRequestParam(authorizationCode,appKey);
requestApi.getGroupGoods(body,hashMap).enqueue(new Callback() {
@Override
public void onResponse(Call call, Response response) {
callSuccessResponse(response);
}
@Override
public void onFailure(Call call, Throwable t) {
callErrorResponse(t);
}
});
}
private void callSuccessResponse( Response response){
dataBeanList = new ArrayList<>();
goodsBean goods = response.body();
goodsSuitBean = goods.getGoodsSuit();
singleList = goods.getDataList();
tokenInfoBean = goods.getTokenInfo();
for (int i=0;i< singleList.size();i++){
//处理需要显示的数据
}
initRecyclerView();
}
private void callErrorResponse(Throwable t){
Tools.i("error","error"+t.fillInStackTrace());
}
//去掉base64前缀
public String removeBase64(String baseStr){
String base64Str = baseStr.substring(baseStr.indexOf(",")+1, baseStr.length());
return base64Str;
}
}以上就是小编今天的分享了，希望可以帮助到大家。