快捷使用Retrofit网络请求框架（get请求，post请求，上传文件）

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 feelings * * @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; } }

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