快捷使用Retrofit网络请求框架（get请求，post请求

首先我们在使用的时候需要根据接口返回的数据进行封装javabean对象，便于后面使用。

构建RetrofitService类进行传参和请求方式设置

package cn.hnshangyu.retrofitandrxjava.retrofit;

import java.util.List;
import java.util.Map;

import cn.hnshangyu.retrofitandrxjava.bean.BookResponse;
import cn.hnshangyu.retrofitandrxjava.bean.Parameters;
import cn.hnshangyu.retrofitandrxjava.bean.PostBean;
import cn.hnshangyu.retrofitandrxjava.bean.QueryBean;
import okhttp3.MultipartBody;
import okhttp3.RequestBody;
import okhttp3.ResponseBody;
import retrofit2.Call;
import retrofit2.http.Body;
import retrofit2.http.Field;
import retrofit2.http.FieldMap;
import retrofit2.http.FormUrlEncoded;
import retrofit2.http.GET;
import retrofit2.http.Headers;
import retrofit2.http.Multipart;
import retrofit2.http.POST;
import retrofit2.http.Part;
import retrofit2.http.PartMap;
import retrofit2.http.Path;
import retrofit2.http.Query;
import retrofit2.http.QueryMap;

/**
 * 每个接口都需要javaBean对象，需要生成
 * Retrofit自动封装
 */
public interface RetrofitService {


    /**
     * Get方法 @Query
     *
     * @param name
     * @param tag
     * @param start
     * @param count
     * @return
     */
    @GET("book/search")
    Call<QueryBean> getSearchBooks(@Query("q") String name,
                                   @Query("tag") String tag, @Query("start") int start,
                                   @Query("count") int count);

    /**
     * Get方法 @QueryMap
     *
     * @param options
     * @return
     */
    @GET("book/search")
    Call<QueryBean> getSearchBooks(@QueryMap Map<String, String> options);

    /**
     * Get方法 Query集合
     * 一般用不到
     * <p>
     * 假如你需要添加相同Key值，但是value却有多个的情况，一种方式是添加多个@Query参数，
     * 还有一种简便的方式是将所有的value放置在列表中，然后在同一个@Query下完成添加，
     * <p>
     * 最后得到的url地址为
     * <p>
     * https://api.douban.com/v2/book/search?q=leadership&q=beyond%20feelings
     *
     * @param name
     * @return
     */
    @GET("book/search")
    Call<QueryBean> getSearchBooks(@Query("q") List<String> name);

    /**
     * Get方法 @Path
     * <p>
     * 此时的url地址为
     * <p>
     * https://api.douban.com/v2/book/1003078
     *
     * @param id
     * @return
     */
    @GET("book/{id}")
    Call<BookResponse> getBook(@Path("id") String id);

    /**
     * Post请求  @field
     *
     * @param bookId
     * @param title
     * @param content
     * @param rating
     * @return
     */
    @FormUrlEncoded
    @POST("resource/information_list")
    Call<PostBean> postSearchBooks(@Field("book") String bookId, @Field("title") String title,
                                   @Field("content") String content, @Field("rating") String rating);

    /**
     * Post请求  @FieldMap
     *
     * @param fields
     * @return
     */
    @FormUrlEncoded
    @POST("resource/information_list")
    Call<PostBean> postSearchBooks(@FieldMap Map<String, String> fields);

    /**
     * Post请求  @Body
     *
     * @param reviews
     * @return 错误
     * @Body parameters cannot be used with form or multi-part encoding. ???
     */
    @POST("resource/information_list")
    @Headers({"Content-Type: application/json;charset=UTF-8"})
    Call<PostBean> postSearchBooks(@Body Parameters reviews);


    /**
     * 上传单个文件
     *
     * @param description
     * @param file
     * @return
     */
    @Multipart
    @POST("upload")
    Call<ResponseBody> uploadFile(
            @Part("description") RequestBody description,
            @Part MultipartBody.Part file);

    /**
     * 上传多个文件方式一
     *
     * @param description
     * @param file1
     * @param file2
     * @return
     */
    @Multipart
    @POST("UploadServlet")
    Call<ResponseBody> uploadMultipleFiles(
            @Part("description") RequestBody description,
            @Part MultipartBody.Part file1,
            @Part MultipartBody.Part file2);

    /**
     * 上传多个文件方式二
     *
     * @param params
     * @return
     */
    @Multipart
    @POST("UploadServlet")
    Call<String> uploadFile(@PartMap Map<String, RequestBody> params);
}

封装SYHttpApi构建Retrofit和接口回调

package cn.hnshangyu.retrofitandrxjava.retrofit;

import java.util.Map;

import cn.hnshangyu.retrofitandrxjava.bean.BookResponse;
import cn.hnshangyu.retrofitandrxjava.bean.Parameters;
import cn.hnshangyu.retrofitandrxjava.bean.PostBean;
import cn.hnshangyu.retrofitandrxjava.bean.QueryBean;
import okhttp3.MultipartBody;
import okhttp3.RequestBody;
import okhttp3.ResponseBody;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;

/**
 * Created by Administrator on 2017/3/23.
 * 测试接口
 * <p>
 * get请求 ：https://api.douban.com/v2/movie/top250?start=0&count=10
 * <p>
 * post请求：http://zhuyu.dashouzhang.org/index.php/app/resource/information_list?app=5
 */


public class SYHttpApi {

    private static SYHttpApi mInstance;

    private Retrofit retrofit;
    private RetrofitService service;
    private Call<QueryBean> call;
    private Call<BookResponse> bookCall;
    private Call<PostBean> stringCall;
    private Call<ResponseBody> responseBodyCall;
    private Call<String> uploadFile;

    public SYHttpApi() {
        retrofit = new Retrofit.Builder()
//                .baseUrl("https://api.douban.com/v2/")
                .baseUrl("http://zhuyu.dashouzhang.org/index.php/app/")
                .addConverterFactory(GsonConverterFactory.create())
                .build();
        service = retrofit.create(RetrofitService.class);
    }

    public static SYHttpApi getInstance() {
        if (mInstance == null) {
            synchronized (SYHttpApi.class) {
                if (mInstance == null)
                    mInstance = new SYHttpApi();
            }
        }
        return mInstance;
    }

    /**
     * 取消请求
     */
    public void cancelRequest() {
        call.cancel();
    }



    /**
     * Get方法 @Query
     *
     * @param name
     * @param tag
     * @param start
     * @param count
     */
    public void getQuerJson(String name, String tag, int start, int count, Callback<QueryBean> callback) {
        call = service.getSearchBooks(name, tag, start, count);
        call.enqueue(callback);
    }

    /**
     * Get方法 @QueryMap
     *
     * @param options
     * @param callback
     */
    public void getQuerMapJson(Map<String, String> options, Callback<QueryBean> callback) {
        call = service.getSearchBooks(options);
        call.enqueue(callback);
    }

    /**
     * Get方法 @Path
     *
     * @param id
     * @param callback
     */
    public void getPath(String id, Callback<BookResponse> callback) {
        bookCall = service.getBook(id);
        bookCall.enqueue(callback);
    }

    /**
     * Post请求  @field
     *
     * @param bookId
     * @param title
     * @param content
     * @param rating
     * @param callback
     */
    public void postQuerJson(String bookId, String title,
                             String content, String rating, Callback<PostBean> callback) {
        stringCall = service.postSearchBooks(bookId, title, content, rating);
        stringCall.enqueue(callback);
    }

    /**
     * Post请求  @FieldMap
     *
     * @param fields
     * @param callback
     */
    public void postQuerJson(Map<String, String> fields, Callback<PostBean> callback) {
        stringCall = service.postSearchBooks(fields);
        stringCall.enqueue(callback);
    }

    /**
     * Post请求  @Body
     *
     * @param parameters
     * @param callback
     */
    public void postQuerJson(Parameters parameters, Callback<PostBean> callback) {
        stringCall = service.postSearchBooks(parameters);
        stringCall.enqueue(callback);
    }

    /**
     * 上传单个文件
     *
     * @param description
     * @param file
     * @param callback
     */
    public void upLoadOneFile(RequestBody description, MultipartBody.Part file,
                              Callback<ResponseBody> callback) {
        responseBodyCall = service.uploadFile(description, file);
        responseBodyCall.enqueue(callback);
    }

    /**
     * 上传多个文件方式一
     *
     * @param description
     * @param file
     * @param file1
     * @param callback
     */
    public void upLoadMoreFile(RequestBody description, MultipartBody.Part file,
                               MultipartBody.Part file1,
                               Callback<ResponseBody> callback) {
        responseBodyCall = service.uploadMultipleFiles(description, file, file1);
        responseBodyCall.enqueue(callback);
    }

    /**
     * 上传多个文件方式二
     *
     * @param params
     * @param callback
     */
    public void upLoadMoreFile(Map<String, RequestBody> params, Callback<String> callback) {
        uploadFile = service.uploadFile(params);
        uploadFile.enqueue(callback);
    }
}

在OnlyUseRetrofitActivity中进行调用

package cn.hnshangyu.retrofitandrxjava;

import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import java.io.File;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CopyOnWriteArrayList;

import butterknife.Bind;
import butterknife.ButterKnife;
import cn.hnshangyu.retrofitandrxjava.bean.BookResponse;
import cn.hnshangyu.retrofitandrxjava.bean.Parameters;
import cn.hnshangyu.retrofitandrxjava.bean.PostBean;
import cn.hnshangyu.retrofitandrxjava.bean.QueryBean;
import cn.hnshangyu.retrofitandrxjava.retrofit.SYHttpApi;
import okhttp3.MediaType;
import okhttp3.MultipartBody;
import okhttp3.RequestBody;
import okhttp3.ResponseBody;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;

/**
 * 只使用Retrofit
 */
public class OnlyUseRetrofitActivity extends AppCompatActivity {

    @Bind(R.id.listview)
    ListView listview;
    private Context mContext;

    private CopyOnWriteArrayList<String> strings = new CopyOnWriteArrayList<>();
    private HashMap<String, String> options;
    private HashMap<String, String> map;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_only_use_retrofit);
        mContext = this;
        ButterKnife.bind(this);
        initData();
        initListener();
    }

    private void initData() {
        strings.add("Get方法 @Query ");
        strings.add("Get方法 @QueryMap  ");
        strings.add("Get方法 Query集合  ");
        strings.add("Get方法 Query非必填  ");
        strings.add("Get方法 @Path  ");
        strings.add("Post请求  @field  ");
        strings.add("Post请求  @FieldMap   ");
        strings.add("Post请求  @Body   ");
        strings.add("  上传单个文件  ");
        strings.add("  上传多个文件方式一  ");
        strings.add("  上传多个文件方式二  ");
        listview.setAdapter(new myAdapter());

    }

    private void initListener() {
        listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
                switch (position) {
                    case 0://Get方法 @Query
                        getQuery();
                        break;
                    case 1://Get方法 @QueryMap
                        getQueryMap();
                        break;
                    case 2://Get方法 Query集合
                        Toast.makeText(mContext, "请看RetrofitService类", Toast.LENGTH_LONG).show();
                        break;
                    case 3://Get方法 Query非必填
                        getQueryNoNeed();
                        break;
                    case 4://Get方法 @Path
                        getPath();
                        break;
                    case 5://Post请求  @field
                        postField();
                        break;
                    case 6://Post请求  @FieldMap
                        postFieldMap();
                        break;
                    case 7://Post请求  @Body
                        postBody();
                        break;
                    case 8://上传单个文件
                        Toast.makeText(mContext, "虚拟服务器地址，请查看代码", Toast.LENGTH_LONG).show();
                        //upDataOneFile();
                        break;
                    case 9://上传多个文件方式一
                        Toast.makeText(mContext, "虚拟服务器地址，请查看代码", Toast.LENGTH_LONG).show();
                        // upDataMoreFile();
                        break;
                    case 10://上传多个文件方式二
                        Toast.makeText(mContext, "虚拟服务器地址，请查看代码", Toast.LENGTH_LONG).show();
                        //upLoadMoreFile();
                        break;
                }
            }

        });
    }

    /**
     * Get方法 @Query
     */
    private void getQuery() {
        SYHttpApi.getInstance().getQuerJson("小王子", "huang", 0, 3, new Callback<QueryBean>() {
            @Override
            public void onResponse(Call<QueryBean> call, Response<QueryBean> response) {
                Log.e("huangxiaoguo", response.body().getCount() + "");
                List<QueryBean.BooksBean> books = response.body().getBooks();
                for (int i = 0; i < books.size(); i++) {
                    Log.e("huangxiaoguo", books.get(i).getSummary());
                }
            }

            @Override
            public void onFailure(Call<QueryBean> call, Throwable t) {
                Log.e("huangxiaoguo", t.getMessage());
            }
        });
    }


    /**
     * Get方法 @QueryMap
     * 这里map对应的值不能穿null，实践证明访问失败
     */
    private void getQueryMap() {
        options = new HashMap<>();
        options.put("q", "小王子");
        options.put("tag", "");
        options.put("start", "0");
        options.put("count", "3");
        SYHttpApi.getInstance().getQuerMapJson(options, new Callback<QueryBean>() {
            @Override
            public void onResponse(Call<QueryBean> call, Response<QueryBean> response) {
                Log.e("huangxiaoguo", response.body().getCount() + "");
                List<QueryBean.BooksBean> books = response.body().getBooks();
                for (int i = 0; i < books.size(); i++) {
                    Log.e("huangxiaoguo", books.get(i).getIsbn13());
                }
            }

            @Override
            public void onFailure(Call<QueryBean> call, Throwable t) {
                Log.e("huangxiaoguo", t.getMessage());
            }
        });
    }

    /**
     * Get方法 @Query非必填
     */
    private void getQueryNoNeed() {
        SYHttpApi.getInstance().getQuerJson("小王子", null, 0, 3, new Callback<QueryBean>() {
            @Override
            public void onResponse(Call<QueryBean> call, Response<QueryBean> response) {
                Log.e("huangxiaoguo", response.body().getCount() + "");
                List<QueryBean.BooksBean> books = response.body().getBooks();
                for (int i = 0; i < books.size(); i++) {
                    Log.e("huangxiaoguo", books.get(i).getAuthor() + "");
                }
            }

            @Override
            public void onFailure(Call<QueryBean> call, Throwable t) {
                Log.e("huangxiaoguo", t.getMessage());
            }
        });

    }

    /**
     * Get方法 @Path
     */
    private void getPath() {
        SYHttpApi.getInstance().getPath("1003078", new Callback<BookResponse>() {
            @Override
            public void onResponse(Call<BookResponse> call, Response<BookResponse> response) {

                Log.e("huangxiaoguo", response.body().getId() + "");
                BookResponse.RatingBean rating = response.body().getRating();
                Log.e("huangxiaoguo", rating.getAverage() + "");
            }

            @Override
            public void onFailure(Call<BookResponse> call, Throwable t) {
                Log.e("huangxiaoguo", t.getMessage());
            }
        });
    }

    /**
     * Post请求  @field
     */
    private void postField() {
        SYHttpApi.getInstance().postQuerJson("12212", "4646546", "dhad", "asa", new Callback<PostBean>() {
            @Override
            public void onResponse(Call<PostBean> call, Response<PostBean> response) {
                List<PostBean.InfoBean> info = response.body().getInfo();
                for (int i = 0; i < info.size(); i++) {
                    Log.e("huangxiaoguo", info.get(i).getInfo());
                }
            }

            @Override
            public void onFailure(Call<PostBean> call, Throwable t) {
                Log.e("huangxiaoguo", t.getMessage());
            }
        });
    }

    /**
     * Post请求  @FieldMap
     */
    private void postFieldMap() {
        map = new HashMap<>();
        map.put("bookId", "12212");
        map.put("title", "4646546");
        map.put("content", "dhad");
        map.put("rating", "asa");
        SYHttpApi.getInstance().postQuerJson(map, new Callback<PostBean>() {
            @Override
            public void onResponse(Call<PostBean> call, Response<PostBean> response) {
                List<PostBean.InfoBean> info = response.body().getInfo();
                for (int i = 0; i < info.size(); i++) {
                    Log.e("huangxiaoguo", info.get(i).getContent());
                }
            }

            @Override
            public void onFailure(Call<PostBean> call, Throwable t) {
                Log.e("huangxiaoguo", t.getMessage());
            }
        });
    }

    /**
     * Post请求  @Body
     */
    private void postBody() {
        Parameters parameters = new Parameters();
        parameters.bookId = "12212";
        parameters.content = "dhad";
        parameters.rating = "asa";
        parameters.title = "4646546";
        SYHttpApi.getInstance().postQuerJson(parameters, new Callback<PostBean>() {
            @Override
            public void onResponse(Call<PostBean> call, Response<PostBean> response) {
                List<PostBean.InfoBean> info = response.body().getInfo();
                for (int i = 0; i < info.size(); i++) {
                    Log.e("huangxiaoguo", info.get(i).getCreate_time());
                }
            }

            @Override
            public void onFailure(Call<PostBean> call, Throwable t) {

            }
        });
    }


    /**
     * 上传单个文件
     * multipart/form-data表示将数据以二进制的形式传入服务端中的request中，
     * <p>
     * MultipartBody.Part.createFormData("aFile", file.getName(), requestFile);
     * <p>
     * 中第一个参数是数组名，第二个参数是文件名；将每条数据都必须封住到RequestBody中。
     * 如果你以一下方式创建上传文件：
     * <p>
     * String filePath = Environment.getExternalStorageDirectory()+File.separator+"love.txt";
     * File file = new File(filePath);
     */
    private void upDataOneFile() {
        //访问手机端的文件资源，保证手机端sdcdrd中必须有这个文件
        File file = new File("/sdcard/Pictures/myPicture/index.jpg");
        RequestBody requestFile =
                RequestBody.create(MediaType.parse("multipart/form-data"), file);
        MultipartBody.Part body = MultipartBody.Part.createFormData("aFile", file.getName(), requestFile);
        // 添加其他的part
        String descriptionString = "This is a description";
        RequestBody description =
                RequestBody.create(MediaType.parse("multipart/form-data"), descriptionString);

        SYHttpApi.getInstance().upLoadOneFile(description, body, new Callback<ResponseBody>() {
            @Override
            public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
                Log.e("huangxiaoguo", "success");
            }

            @Override
            public void onFailure(Call<ResponseBody> call, Throwable t) {
                t.printStackTrace();
            }
        });
    }


    /**
     * 上传多个文件方式一
     */
    private void upDataMoreFile() {
        //访问手机端的文件资源，保证手机端sdcdrd中必须有这个文件
        File file = new File("/sdcard/Pictures/myPicture/index.jpg");
        File file1 = new File("/sdcard/Picuures/myPicture/me.txt");
        RequestBody requestFile =
                RequestBody.create(MediaType.parse("applicaiton/otcet-stream"), file);

        RequestBody requestFile1 =
                RequestBody.create(MediaType.parse("applicaiton/otcet-stream"), file1);

        MultipartBody.Part body1 =
                MultipartBody.Part.createFormData("aFile", file.getName(), requestFile);

        MultipartBody.Part body2 =
                MultipartBody.Part.createFormData("aFile", file.getName(), requestFile1);
        // 添加其他的part
        String descriptionString = "This is a description";
        RequestBody description =
                RequestBody.create(MediaType.parse("multipart/form-data"), descriptionString);
        SYHttpApi.getInstance().upLoadMoreFile(description, body1, body2, new Callback<ResponseBody>() {
            @Override
            public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
                Log.e("huangxiaoguo", "success");
            }

            @Override
            public void onFailure(Call<ResponseBody> call, Throwable t) {
                t.printStackTrace();
            }
        });
    }

    /**
     * 上传多个文件方式二
     */
    private void upLoadMoreFile() {

        File file = new File("/sdcard/Pictures/myPicture/index.jpg");
        File file1 = new File("/sdcard/Picuures/myPicture/me.txt");

        RequestBody requestBody = RequestBody.create(MediaType.parse("multipart/form-data"), file);
        RequestBody requestBody1 = RequestBody.create(MediaType.parse("multipart/form-data"), file1);
        Map<String, RequestBody> params = new HashMap<>();

        params.put("file\"; filename=\"" + file.getName(), requestBody);
        params.put("file\"; filename=\"" + file1.getName(), requestBody1);
        SYHttpApi.getInstance().upLoadMoreFile(params, new Callback<String>() {
            @Override
            public void onResponse(Call<String> call, Response<String> response) {
                Log.e("huangxiaoguo", response.body().toString());
            }

            @Override
            public void onFailure(Call<String> call, Throwable t) {
                Log.e("huangxiaoguo", t.getMessage());
            }
        });
    }


    private class myAdapter extends BaseAdapter {

        @Override
        public int getCount() {
            return strings.size();
        }

        @Override
        public Object getItem(int i) {
            return null;
        }

        @Override
        public long getItemId(int i) {
            return 0;
        }

        @Override
        public View getView(int position, View view, ViewGroup viewGroup) {
            View inflate;
            ViewHolder holder;
            if (view == null) {
                holder = new ViewHolder();
                inflate = View.inflate(mContext, R.layout.textview, null);
                holder.mText = (TextView) inflate.findViewById(R.id.text);
                inflate.setTag(holder);
            } else {
                inflate = view;
                holder = (ViewHolder) inflate.getTag();
            }
            holder.mText.setText(strings.get(position));
            return inflate;
        }

    }

    class ViewHolder {

        TextView mText;
    }

}

源码下载 : http://download.csdn.net/detail/huangxiaoguo1/9792052