Retrofit 2.0 -添加标题不起作用

Question

我正在开发一个Android应用程序，我想使用Retrofit调用API。API在头中需要授权令牌，我也添加了相同的。

下面是代码片段

RetrofitClient.kt

object RetrofitClient {
var apiInterface: APIInterface? = null
val okHttpClient = OkHttpClient.Builder()
.connectTimeout(300, TimeUnit.SECONDS)
.writeTimeout(300, TimeUnit.SECONDS)
.readTimeout(180, TimeUnit.SECONDS)
@Synchronized
fun getClient(context: Context): APIInterface {
if (apiInterface == null) {
if (SharedPreference.isAuthTokenExists(context))
okHttpClient.addInterceptor(HeaderInterceptor(context))
apiInterface =
Retrofit.Builder()
.baseUrl(context.resources.getString(R.string.base_url))
.addConverterFactory(GsonConverterFactory.create())
.client(okHttpClient.build())
.build().create<APIInterface>(APIInterface::class.java)
}
return apiInterface as APIInterface
}
}

HeaderInterceptor.kt

class HeaderInterceptor(private val context: Context) : Interceptor {
private val HEADER_TOKEN = "token"
override fun intercept(chain: Interceptor.Chain): Response = chain.run {
proceed(
request()
.newBuilder()
.addHeader(
HEADER_TOKEN, "Bearer " + SharedPreference.initialize(context).getString(
Extras.AUTH_TOKEN, ""
)
).build()
)
}
}

APIInterface.kt

interface APIInterface {
@POST("dialtogo/otp/verification")
fun submitOTP(@Body otpModel: OTPModel): Call<ResponseFormat.GenericResponse?>?
}

OTPRepository.kt

class OTPRepository(private var ctx: Context) {
fun submitOTP(otpModel: OTPModel) {
val apiInterface: APIInterface = RetrofitClient.getClient(ctx)
val call: Call<ResponseFormat.GenericResponse?>? = apiInterface
.submitOTP(otpModel)
call?.enqueue(object : Callback<ResponseFormat.GenericResponse?> {
override fun onResponse(
call: Call<ResponseFormat.GenericResponse?>?,
response: Response<ResponseFormat.GenericResponse?>
) {
if (response.isSuccessful)
(ctx as dial.to.go.utils.Response)
.onSuccessResponse(response.body() as ResponseFormat.GenericResponse)
else
(ctx as dial.to.go.utils.Response)
.onErrorResponse(response.errorBody().toString())
}
override fun onFailure(call: Call<ResponseFormat.GenericResponse?>?, t: Throwable?) {
(ctx as dial.to.go.utils.Response)
.onFailure(t?.message)
}
})
}
}

我得到400错误的请求。

我在没有头的API调用中没有发现任何问题。我的意思是，如果SharedPreference.isAuthTokenExists(context)返回false，它工作得很好。而且，仅供参考，它在POSTMAN中工作良好。.

请任何人帮我找出解决这个问题的方法。

Answer 1

我不太熟悉Kotlin，但是您正在清除请求并只发送头。

HeaderInterceptor.kt在Java中应该是:

Request request = original.newBuilder()
.addHeader(HEADER_TOKEN, "Bearer " + SharedPreference.initialize(context).getString(Extras.AUTH_TOKEN, "")
.method(original.method(), original.body())
.build();
return chain.proceed(request);

Answer 2

在RetrofitClient中手动添加header，而不调用headerInterceptor类函数。kt文件

kHttpClient.Builder httpClient = new OkHttpClient.Builder();
httpClient.addInterceptor(new Interceptor() {
@Override
public Response intercept(Chain chain) throws IOException {
Request request = chain.request().newBuilder().addHeader("parameter", "value").build();
return chain.proceed(request);
}
});
Retrofit retrofit = new Retrofit.Builder().addConverterFactory(GsonConverterFactory.create()).baseUrl(url).client(httpClient.build()).build();

Answer 3

我想问题是第一次作为令牌将不存在，它将创建apiInterface没有HeaderInterceptor，然后因为它是singleton，它将继续使用相同的客户端，不会再次添加头，更好的选择是尽管令牌存在/不只是添加HeaderInterceptor总是因为它不会引起任何问题

@Synchronized
fun getClient(context: Context): APIInterface {
if (apiInterface == null) { 
//removed the check for exists
okHttpClient.addInterceptor(HeaderInterceptor(context))
apiInterface =
Retrofit.Builder()
.baseUrl(context.resources.getString(R.string.base_url))
.addConverterFactory(GsonConverterFactory.create())
.client(okHttpClient.build())
.build().create<APIInterface>(APIInterface::class.java)
}
return apiInterface as APIInterface
}

将HeaderInterceptor更改为

class HeaderInterceptor(private val context: Context) : Interceptor {
private val HEADER_TOKEN = "token"
override fun intercept(chain: Interceptor.Chain): Response {
val modRequest = chain.request().newBuilder()
val tokenAvailable = SharedPreference.isAuthTokenExists(context)
if(tokenAvailable){
modRequest.addHeader(HEADER_TOKEN, "Bearer " + SharedPreference.initialize(context).getString(Extras.AUTH_TOKEN, "")
}
return chain.proceed(modRequest.build())
}
}

Answer 4

我找到了解决困扰我好几个小时的问题的方法。

我在header的键名上犯了一个愚蠢的错误。它应该是Authorization，但它保留为token。

非常感谢每个试图帮助我的人。