Retrofit 2.1 入门

Retrofit 2.1入门

, map);
    try {
        Response<String>body=call.execute();
        System.out.print(body.body());
    } catch (IOException e) {
        e.printStackTrace();
    }
}

query 访问的参数会添加到路径(path)的后面.

实际访问的url是 http://tieba.baidu.com/sheet?name=laiqurufeng&age=22&gender=male&address=sz  (模拟的访问)

encoded =true表示对url的query进行url编码,同理还有encodeValues. 这2个的值默认都是true的

如果上面的代码换成 map.put("性别","男") ,然后更改@QueryMap(encoded =false )

那么实际访问的url变成了 http://tieba.baidu.com/sheet?name=laiqurufeng&age=22&性别=%E7%94%B7&address=sz (可以看到key没有进行url编码,value进行了url编码).

Header注解

header分为key和value都固定,静态Header注解方法 和 动态Header注解方法

注意header不会相互覆盖.

静态Header

interface FixedHeader{

@Headers({    //静态Header

"Accept: application/vnd.github.v3.full+json",

"User-Agent: Retrofit-Sample-App"

})

@GET("/")

Call<ResponseBody> getResponse();

}

动态Header

interface DynamicHeader{

@Headers("Cache-Control: max-age=640000")       //动态Header

@GET("/")

Call<ResponseBody> getResponse(

@Header("header1")String header1,

@Header("header2")String header2);

//动态Header,其value值可以在调用这个方法时动态传入.

}

例子：

public class PhoneResult {
    /**
     * errNum : 0
     * retMsg : success
     * retData : {"phone":"15210011578","prefix":"1521001","supplier":"移动","province":"北京","city":"北京","suit":"152卡"}
     */
    public int errNum;
    public String retMsg;
    /**
     * phone : 15210011578
     * prefix : 1521001
     * supplier : 移动
     * province : 北京
     * city : 北京
     * suit : 152卡
     */
    public RetDataEntity retData;
    public static class RetDataEntity {
        public String phone;
        public String prefix;
        public String supplier;
        public String province;
        public String city;
        public String suit;

        @Override
        public String toString() {
            return "RetDataEntity{" +
                    "phone='" + phone + '\'' +
                    ", prefix='" + prefix + '\'' +
                    ", supplier='" + supplier + '\'' +
                    ", province='" + province + '\'' +
                    ", city='" + city + '\'' +
                    ", suit='" + suit + '\'' +
                    '}';
        }
    }
}

Service:

动态Header

public interface PhoneService {
    @GET("/apistore/mobilenumber/mobilenumber")
    Call<PhoneResult> getResult(
            @Header("apikey")String apikey,
            @Query("phone")String phone
    );
}

静态Header

public interface PhoneServiceDynamic {
    @Headers("apikey:8e13586b86e4b7f3758ba3bd6c9c9135")
    @GET("/apistore/mobilenumber/mobilenumber")
    Call<PhoneResult> getResult(
            @Query("phone")String phone
    );
}

调用

public static void phone_Query(String phone){
    final String BASE_URL="http://apis.baidu.com";
    final String API_KEY="8e13586b86e4b7f3758ba3bd6c9c9135";
    //1.创建Retrofit对象
    Retrofit retrofit=new Retrofit.Builder()
            .baseUrl(BASE_URL)
            .addConverterFactory(GsonConverterFactory.create())
            .build();
    //2.创建访问API的请求
    PhoneService service=retrofit.create(PhoneService.class);
    Call<PhoneResult>call=service.getResult(API_KEY,phone);
    //3.发送请求
    try {
        Response<PhoneResult>response=call.execute();
        //4.处理结果
        if (response.isSuccessful()) {
            PhoneResult result=response.body();
            if (result!=null) {
                PhoneResult.RetDataEntity entity = result.getRetData();
                System.out.print(entity.toString());
            }
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
    /*异步调用

call.enqueue(new Callback<PhoneResult>() {
        @Override
        public void onResponse(Call<PhoneResult> call, Response<PhoneResult> response) {
            //4.处理结果
            if (response.isSuccessful()) {
                PhoneResult result=response.body();
                if (result!=null) {
                    PhoneResult.RetDataEntity entity = result.getRetData();
                    System.out.print(entity.toString());
                }
            }
        }
        @Override
        public void onFailure(Call<PhoneResult> call, Throwable t) {
        }
    });*/
}

上传文件

public interface UploadServer {
    @Headers({//静态Header
            "User-Agent: androidphone"
            })
    @Multipart
    @POST("/service.php?mod=avatar&type=big")
        // upload is a post field
        // without filename it didn't work! I use a constant name because server doesn't save file on original name
        //@Part("filename=\"1\" ") RequestBody
        //以表单的形式上传图片
    Call<JsonObject> uploadImageM(@Part("file\";filename=\"1") RequestBody file);
//    Call<ResponseBody> uploadImage(@Part("file\"; filename=\"image.png\"") RequestBody file);
    /**
     * 以二进制流的形式上传 图片
     * @param file
     * @return
     */
    @Headers({//静态Header
            "User-Agent:androidphone"
    })
    @POST("/service.php?mod=avatar&type=big")
    Call<ResponseBody> uploadImage(@Body RequestBody file);
}

调用

public static void upload(String fpath) { // path to file like /mnt/sdcard/myfile.txt
    String baseurl="http://dev.123go.net.cn";
    File file = new File(fpath);
    // please check you mime type, i'm uploading only images
    RequestBody requestBody = RequestBody.create(MediaType.parse("image/*"), file);
    /*RequestBody rbody=new MultipartBody.Builder()
            .addPart(requestBody).build();
    RequestBody requestFile =
            RequestBody.create(MediaType.parse("image/jpg"), file);
    MultipartBody.Part body =
            MultipartBody.Part.createFormData("image", file.getName(), requestFile);
    */
    Retrofit retrofit=new Retrofit.Builder()
            .baseUrl(baseurl)
            .addConverterFactory(GsonConverterFactory.create())
            .client(getOkhttpClient())
            .build();
    // 添加描述
    /*String descriptionString = "hello, 这是文件描述";
    RequestBody description =
            RequestBody.create(
                    MediaType.parse("multipart/form-data"), descriptionString);*/
    UploadServer server=retrofit.create(UploadServer.class);
    Call<ResponseBody> call = server.uploadImage(requestBody);
    call.enqueue(new Callback<ResponseBody>() {

        @Override
        public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
            ResponseBody jsonObject=response.body();
            System.out.print(jsonObject.toString());
        }
        @Override
        public void onFailure(Call<ResponseBody> call, Throwable t) {
        }
    });
}

private static OkHttpClient getOkhttpClient(){
        final String cookie="your cookie";
        OkHttpClient httpClient = new OkHttpClient.Builder()
                .addInterceptor(new Interceptor() {
                    @Override
                    public okhttp3.Response intercept(Chain chain) throws IOException {
                        Request request = chain.request()
                                .newBuilder()
//                                .addHeader("Content-Type", " application/x-www-form-urlencoded; charset=UTF-8")
//                                .addHeader("Accept-Encoding", "gzip, deflate")
//                                .addHeader("Connection", "keep-alive")
//                                .addHeader("Accept", "***")
                                .addHeader("Cookie", cookie)
                                .build();
                        return chain.proceed(request);
                    }
                })
                .build();

return httpClient;
    }

来自为知笔记(Wiz)