Okhttp 拦截器问题

huangapple
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英文:

Okhttp Interceptor issue

问题

  1. 我正在尝试为一个简单的okhttp（Get）请求添加一个头部。如何正确添加HttpHeader？我可以进行调试以确保我的头部实际上被发送到服务器吗？
  3. Request request = new Request.Builder()
  4.         .url("URL")
  5.         .build();
  7. OkHttpClient okHttpClient = new OkHttpClient.Builder()
  8.         .addInterceptor(new Interceptor() {
  9.             @Override
  10.             public okhttp3.Response intercept(Chain chain) throws IOException {
  11.                 Request originalRequest = chain.request();
  12.                 Request newRequest = originalRequest.newBuilder()
  13.                         .addHeader("Header", "123")
  14.                         .build();
  15.                 return chain.proceed(newRequest);
  16.             }
  17.         })
  18.         .build();
  20. okHttpClient.newCall(request).enqueue(new Callback() {
  21.     @Override
  22.     public void onFailure(Call call, IOException e) {
  23.     }
  24. });

我已经寻找了基本的简单示例，但它们都是关于Retrofit、GSON、接口或者是使用Kotlin的。我需要在代码中理解这部分内容。

英文:

I'm trying to add a header to a simple okhttp (Get) request. How do I add the HttpHeader properly? Can I debug to ensure that my Header is actually sent to the server?

  1.         Request request = new Request.Builder()
  2.                 .url("URL")
  3.                 .build();
  5.         OkHttpClient okHttpClient = new OkHttpClient.Builder()
  6.                 .addInterceptor(new Interceptor() {
  7.                     @Override
  8.                     public okhttp3.Response intercept(Chain chain) throws IOException {
  9.                         Request originalRequest = chain.request();
  10.                         Request newRequest = originalRequest.newBuilder()
  11.                                 .addHeader("Header", "123")
  12.                                 .build();
  13.                         return chain.proceed(newRequest);
  14.                     }
  15.                 })
  16.                 .build();
  18.         okHttpClient.newCall(request).enqueue(new Callback() {
  19.             @Override
  20.             public void onFailure(Call call, IOException e) {
  21.              }

I've looked for basic simple examples but they are with Retrofit, GSON, Interfaces, or in Kotlin. Need to understand it codewise.

答案1

得分: 1

以下是您要翻译的内容：

  1. 可以使用`addHeader`方法将头信息作为参数发送，并添加头信息。
  3. Request getRequest = chain.request();
  4. Request.Builder requestBuilder = getRequest.newBuilder()
  5.     .addHeader("Header", "123");
  6. Request request = requestBuilder.build();
  7. return chain.proceed(request);
  9. 您还可以访问并查看答案[链接1][1]和[链接2][2]。
  11. 以下是您可以使用的所有请求结构。
  13. OkHttpClient.Builder httpClient = new OkHttpClient.Builder();
  14. httpClient.addInterceptor(new Interceptor() {
  15.     @Override
  16.     public Response intercept(Interceptor.Chain chain) throws IOException {
  17.         Request original = chain.request();
  19.         Request request = original.newBuilder()
  20.                 .method(original.method(), original.body())
  21.                 .build();
  23.         return chain.proceed(request);
  24.     }
  25. };
  26. OkHttpClient client = httpClient.build();
  28. Request request = new Request.Builder()
  29.         .url("URL")
  30.         .addHeader("Header", "123")
  31.         .build();
  33. client.newCall(request).enqueue(new Callback() {
  34.     @Override
  35.     public void onFailure(Call call, IOException e) {
  36.         e.printStackTrace();
  37.         Log.d("OKHTTP3", e.getMessage());
  38.         // 您会得到这个失败
  39.         runOnUiThread(() -> {
  41.         });
  42.     }
  44.     @Override
  45.     public void onResponse(Call call, Response response) throws IOException {
  46.         try {
  47.             final String _body = response.body().string();
  48.             Log.d("OKHTTP3", _body);
  49.             runOnUiThread(() -> {
  51.             });
  52.         } catch (InterruptedIOException e) {
  53.             runOnUiThread(() -> {
  54.                 // 或者根据超时时间而定的异常
  56.             });
  57.         }
  58.     }
  59. });
  60. [1]: https://stackoverflow.com/questions/32196424/how-to-add-headers-to-okhttp-request-interceptor
  61. [2]: https://stackoverflow.com/questions/45366657/okhttp-adding-headers

请注意，代码部分没有翻译。

英文:

You can use by method addHeader send chain as param and add headers.

  1.  Request getRequest = chain.request();
  2. Request.Builder requestBuilder = getRequest.newBuilder()
  3. .addHeader("Header", "123");
  4. Request request = requestBuilder.build();
  5. return chain.proceed(request);

You can also visit and look at the answers link1 and link2.

Here is the all-request Structure you can use.

  1. OkHttpClient.Builder httpClient = new OkHttpClient.Builder();
  2. httpClient.addInterceptor(new Interceptor() {
  3. @Override
  4. public Response intercept(Interceptor.Chain chain) throws IOException {
  5. Request original = chain.request();
  6. Request request = original.newBuilder()
  7. .method(original.method(), original.body())
  8. .build();
  9. return chain.proceed(request);
  10. }
  11. };
  12. OkHttpClient client = httpClient.build();
  13. Request request = new Request.Builder()
  14. .url("URL")
  15. .addHeader("Header", "123")
  16. .build();
  17. client.newCall(request).enqueue(new Callback() {
  18. @Override
  19. public void onFailure(Call call, IOException e) {
  20. e.printStackTrace();
  21. Log.d("OKHTTP3", e.getMessage());
  22. // You get this failure
  23. runOnUiThread(() -> {
  24. });
  25. }
  26. @Override
  27. public void onResponse(Call call, Response response) throws IOException {
  28. try {
  29. final String _body = response.body().string();
  30. Log.d("OKHTTP3", _body);
  31. runOnUiThread(() -> {
  32. });
  33. } catch (InterruptedIOException e) {
  34. runOnUiThread(() -> {
  35. // Or this exception depending when timeout is reached
  36. });
  37. }
  38. }
  39. });

答案2

得分: 0

使用addHeader()来添加头部。header()将已添加的头部名称设置为值。

  1. Request newRequest = originalRequest.newBuilder()
  2.     .addHeader("Header", "123")
  3.     .build();

为了验证它是否正常工作，你可以使用HttpLoggingInterceptor来记录你的网络请求。

英文:

Use addHeader() to add headers. header() sets the already added header name to the value.

  1. Request newRequest = originalRequest.newBuilder()
  2. .addHeader("Header", "123")
  3. .build();

And to verify it's working correctly, you can use HttpLoggingInterceptor to log your network requests.

答案3

得分: 0

要检查您的请求并添加标头，您可以使用拦截器。

要添加标头，请使用以下代码（从gist复制）：

  1. OkHttpClient.Builder httpClient = new OkHttpClient.Builder();  
  2. httpClient.addInterceptor(new Interceptor() {  
  3.     @Override
  4.     public Response intercept(Interceptor.Chain chain) throws IOException {
  5.         Request original = chain.request();
  7.         Request request = original.newBuilder()
  8.             .header("User-Agent", "Your-App-Name")
  9.             .header("Accept", "application/vnd.yourapi.v1.full+json")
  10.             .method(original.method(), original.body())
  11.             .build();
  13.         return chain.proceed(request);
  14.     }
  15. });
  17. OkHttpClient client = httpClient.build();  
  18. Retrofit retrofit = new Retrofit.Builder()  
  19.     .baseUrl(API_BASE_URL)
  20.     .addConverterFactory(GsonConverterFactory.create())
  21.     .client(client)
  22.     .build();

要查看标头，您可以使用提供的示例代码这里：

  1. class LoggingInterceptor implements Interceptor {
  2.   @Override public Response intercept(Interceptor.Chain chain) throws IOException {
  3.     Request request = chain.request();
  5.     long t1 = System.nanoTime();
  6.     logger.info(String.format("Sending request %s on %s%n%s",
  7.         request.url(), chain.connection(), request.headers()));
  9.     Response response = chain.proceed(request);
  11.     long t2 = System.nanoTime();
  12.     logger.info(String.format("Received response for %s in %.1fms%n%s",
  13.         response.request().url(), (t2 - t1) / 1e6d, response.headers()));
  15.     return response;
  16.   }
  17. }
英文:

To check your request and to add headers, you can use interceptors.

To add headers, (copied from gist):

  1. OkHttpClient.Builder httpClient = new OkHttpClient.Builder();  
  2. httpClient.addInterceptor(new Interceptor() {  
  3. @Override
  4. public Response intercept(Interceptor.Chain chain) throws IOException {
  5. Request original = chain.request();
  6. Request request = original.newBuilder()
  7. .header("User-Agent", "Your-App-Name")
  8. .header("Accept", "application/vnd.yourapi.v1.full+json")
  9. .method(original.method(), original.body())
  10. .build();
  11. return chain.proceed(request);
  12. }
  13. }
  14. OkHttpClient client = httpClient.build();  
  15. Retrofit retrofit = new Retrofit.Builder()  
  16. .baseUrl(API_BASE_URL)
  17. .addConverterFactory(GsonConverterFactory.create())
  18. .client(client)
  19. .build();

To see your headers, you can use sample example provided here:

  1. class LoggingInterceptor implements Interceptor {
  2. @Override public Response intercept(Interceptor.Chain chain) throws IOException {
  3. Request request = chain.request();
  4. long t1 = System.nanoTime();
  5. logger.info(String.format("Sending request %s on %s%n%s",
  6. request.url(), chain.connection(), request.headers()));
  7. Response response = chain.proceed(request);
  8. long t2 = System.nanoTime();
  9. logger.info(String.format("Received response for %s in %.1fms%n%s",
  10. response.request().url(), (t2 - t1) / 1e6d, response.headers()));
  11. return response;
  12. }
  13. }

huangapple
  • 本文由 发表于 2020年5月30日 22:16:11
  • 转载请务必保留本文链接：https://go.coder-hub.com/62103697.html
  • android
  • interceptor
  • java
  • okhttp
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