如何使用OkHttp设置连接超时

我正在使用OkHttp库开发应用程序，但我的麻烦是我找不到如何设置连接超时和套接字超时的方法。

OkHttpClient client = new OkHttpClient();

Request request = new Request.Builder().url(url).build();

Response response = client.newCall(request).execute();

您只需要这样做

OkHttpClient client = new OkHttpClient();
client.setConnectTimeout(15, TimeUnit.SECONDS); // connect timeout
client.setReadTimeout(15, TimeUnit.SECONDS);    // socket timeout

Request request = new Request.Builder().url(url).build();
Response response = client.newCall(request).execute();

要知道，值设置setReadTimeout为使用的一个setSoTimeout上Socket的内部OkHttp Connection类。

在上不设置任何超时OkHttpClient等同于将值设置为0on setConnectTimeout或，setReadTimeout并且将导致完全没有超时。描述可以在这里找到。

如@marceloquinta在评论中提到的，setWriteTimeout也可以设置。

从2.5.0版本开始，读/写/连接超时值默认设置为10秒，如@ChristerNordvik所述。这可以在这里看到。

从OkHttp3开始，现在可以像这样通过Builder进行此操作

client = new OkHttpClient.Builder()
        .connectTimeout(10, TimeUnit.SECONDS)
        .writeTimeout(10, TimeUnit.SECONDS)
        .readTimeout(30, TimeUnit.SECONDS)
        .build();

您也可以在这里查看食谱。

对于okhttp3，这已经有所改变。

现在，您可以使用构建器（而不是setter）来设置时间，如下所示：

OkHttpClient client = new OkHttpClient.Builder()
        .connectTimeout(10, TimeUnit.SECONDS)
        .writeTimeout(10, TimeUnit.SECONDS)
        .readTimeout(30, TimeUnit.SECONDS)
        .build();

可以在其Wiki中找到更多信息：https : //github.com/square/okhttp/blob/b3dcb9b1871325248fba917458658628c44ce8a3/docs/recipes.md#timeouts-kt-java

对于翻新改造：2.0.0-beta4，代码如下：

OkHttpClient client = new OkHttpClient.Builder()
        .addInterceptor(logging)
        .connectTimeout(30, TimeUnit.SECONDS)
        .readTimeout(30, TimeUnit.SECONDS)
        .writeTimeout(30, TimeUnit.SECONDS)
        .build();

Retrofit retrofit = new Retrofit.Builder()
        .baseUrl("http://api.yourapp.com/")
        .addConverterFactory(GsonConverterFactory.create())
        .client(client)
        .build();

对于Retrofit 2.0.0-beta1或beta2，代码如下

    OkHttpClient client = new OkHttpClient();

    client.setConnectTimeout(30, TimeUnit.SECONDS);
    client.setReadTimeout(30, TimeUnit.SECONDS);
    client.setWriteTimeout(30, TimeUnit.SECONDS);

    Retrofit retrofit = new Retrofit.Builder()
            .baseUrl("http://api.yourapp.com/")
            .addConverterFactory(GsonConverterFactory.create())
            .client(client)
            .build();

//add in gradle and sync
compile 'com.squareup.okhttp3:okhttp:3.2.0'
compile 'com.google.code.gson:gson:2.6.2'

import okhttp3.OkHttpClient;
import okhttp3.OkHttpClient.Builder;


Builder b = new Builder();
b.readTimeout(200, TimeUnit.MILLISECONDS);
b.writeTimeout(600, TimeUnit.MILLISECONDS);
// set other properties

OkHttpClient client = b.build();

现在改变了。替换.Builder()为.newBuilder()

从okhttp：3.9.0开始，代码如下：

OkHttpClient okHttpClient = new OkHttpClient()
    .newBuilder()
    .connectTimeout(10,TimeUnit.SECONDS)
    .writeTimeout(10,TimeUnit.SECONDS)
    .readTimeout(30,TimeUnit.SECONDS)
    .build();

okhttp版本：3.11.0或更高

来自okhttp源代码

/**
 * Sets the default connect timeout for new connections. A value of 0 means no timeout,
 * otherwise values must be between 1 and {@link Integer#MAX_VALUE} when converted to
 * milliseconds.
 *
 * <p>The connectTimeout is applied when connecting a TCP socket to the target host.
 * The default value is 10 seconds.
 */
public Builder connectTimeout(long timeout, TimeUnit unit) {
  connectTimeout = checkDuration("timeout", timeout, unit);
  return this;
}

unit 可以是以下任何值

TimeUnit.NANOSECONDS
TimeUnit.MICROSECONDS
TimeUnit.MILLISECONDS
TimeUnit.SECONDS
TimeUnit.MINUTES
TimeUnit.HOURS
TimeUnit.DAYS

示例代码

OkHttpClient client = new OkHttpClient.Builder()
        .connectTimeout(5000, TimeUnit.MILLISECONDS)/*timeout: 5 seconds*/
        .build();

String url = "https://www.google.com";
Request request = new Request.Builder()
        .url(url)
        .build();

try {
    Response response = client.newCall(request).execute();
} catch (IOException e) {
    e.printStackTrace();
}

更新

我已经从version将新的api添加到okhttp 3.12.0，您可以这样设置超时：

OkHttpClient client = new OkHttpClient.Builder()
        .connectTimeout(Duration.ofSeconds(5))/*timeout: 5 seconds*/
        .build();

注意：这需要API 26+，因此，如果您支持旧版本的Android，请继续使用(5, TimeUnit.SECONDS)。

像这样：

//New Request
        HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
        logging.setLevel(HttpLoggingInterceptor.Level.BASIC);
        final OkHttpClient client = new OkHttpClient.Builder()
                .addInterceptor(logging)
                .connectTimeout(30, TimeUnit.SECONDS)
                .readTimeout(30, TimeUnit.SECONDS)
                .writeTimeout(30, TimeUnit.SECONDS)
                .build();

这对我有用...来自https://github.com/square/okhttp/issues/3553

OkHttpClient client = new OkHttpClient.Builder()
        .connectTimeout(10, TimeUnit.SECONDS)
        .readTimeout(10, TimeUnit.SECONDS)
        .writeTimeout(10, TimeUnit.SECONDS)
        .retryOnConnectionFailure(false) <-- not necessary but useful!
        .build();

如果要定制配置，请使用以下方法首先创建OKhttpclient，然后在其顶部添加builder。

private final OkHttpClient client = new OkHttpClient();

// Copy to customize OkHttp for this request.
    OkHttpClient client1 = client.newBuilder()
        .readTimeout(500, TimeUnit.MILLISECONDS)
        .build();
    try (Response response = client1.newCall(request).execute()) {
      System.out.println("Response 1 succeeded: " + response);
    } catch (IOException e) {
      System.out.println("Response 1 failed: " + e);
    }

您可以设置一个呼叫超时，以覆盖从解析DNS，连接，编写请求正文，服务器处理以及读取响应正文的整个周期。

val client = OkHttpClient().newBuilder().callTimeout(CALL_TIMEOUT_IN_MINUTES, TimeUnit.MINUTES).build()