如何使用OkHttp设置连接超时

Question

我正在使用OkHttp库开发app,我的麻烦是我找不到如何设置连接超时和套接字超时.

OkHttpClient client = new OkHttpClient();

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

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

谢谢.

Answer 1

你只需要这样做

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();

请注意,设置的数值setReadTimeout是用在一个setSoTimeout对Socket的内部OkHttp Connection类.

不设置任何超时OkHttpClient相当于设置0on setConnectTimeout或on 的值,setReadTimeout并且将导致根本没有超时.说明可以在这里找到.

正如@marceloquinta在评论中提到的那样setWriteTimeout也可以设置.

从版本2.5.0开始,默认情况下,如@ChristerNordvik所述,读/写/连接超时值设置为10秒.这可以在这里看到.

从OkHttp3开始,现在可以通过Builder这样做

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

Answer 2

对于okhttp3,这已经改变了一点.

现在您使用构建器设置时间,而不是设置器,如下所示:

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

更多信息可以在他们的维基中找到:https: //github.com/square/okhttp/wiki/Recipes#timeouts

Answer 3

对于Retrofit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();

Answer 4

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();

Answer 5

//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();

Answer 6

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 可以是以下的任何值

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向OkHttp添加了新的 API 3.12.0，你可以像这样设置超时：

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).

Answer 7

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();