Retrofit-2内容类型问题

问题描述

我的Api接受Content-Type application/json作为标头.我已按照Retrofit Docs中所述完美设置Header.

My Api is accepting Content-Type application/json as headers.I set Header perfectly as mentioned in Retrofit Docs.

@Headers("Content-Type: application/json")
@POST("user/classes")
Call<playlist> addToPlaylist(@Body PlaylistParm parm);

但是在请求日志中，它正在返回Content-Type txt/html.那么我该如何解决此问题?此api在POSTMAN中可以正常工作

But in Request Log it is Returning Content-Type txt/html.So how i should fix this issue? This api works fine in POSTMAN

推荐答案

为Retrofit 1.9和2.0尝试使用此类型的标头.对于Json内容类型.

Try this type header for Retrofit 1.9 and 2.0. For Json Content Type.

@Headers({"Accept: application/json"})
@POST("user/classes")
Call<playlist> addToPlaylist(@Body PlaylistParm parm);

您可以添加更多标题，即

You can add many more headers i.e

@Headers({
        "Accept: application/json",
        "User-Agent: Your-App-Name",
        "Cache-Control: max-age=640000"
    })

动态添加到标题:

@POST("user/classes")
Call<ResponseModel> addToPlaylist(@Header("Content-Type") String content_type, @Body RequestModel req);

调用您的方法，即

mAPI.addToPlayList("application/json", playListParam);

或

想要每次都通过，然后使用http Interceptor创建HttpClient对象:

Want to pass everytime then Create HttpClient object with http Interceptor:

OkHttpClient httpClient = new OkHttpClient();
        httpClient.networkInterceptors().add(new Interceptor() {
            @Override
            public com.squareup.okhttp.Response intercept(Chain chain) throws IOException {
                Request.Builder requestBuilder = chain.request().newBuilder();
                requestBuilder.header("Content-Type", "application/json");
                return chain.proceed(requestBuilder.build());
            }
        });

然后添加到改造对象

Retrofit retrofit = new Retrofit.Builder().baseUrl(BASE_URL).client(httpClient).build();

更新(如果您使用的是Kotlin)，请删除 {} ，否则它将不起作用

UPDATE if you are using Kotlin remove the { } else it will not work

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